WO2000024192A1 - Television set-top box with configurable functionality - Google Patents
Television set-top box with configurable functionality Download PDFInfo
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- WO2000024192A1 WO2000024192A1 PCT/US1999/021983 US9921983W WO0024192A1 WO 2000024192 A1 WO2000024192 A1 WO 2000024192A1 US 9921983 W US9921983 W US 9921983W WO 0024192 A1 WO0024192 A1 WO 0024192A1
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- api
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/20—Adaptations for transmission via a GHz frequency band, e.g. via satellite
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/443—OS processes, e.g. booting an STB, implementing a Java virtual machine in an STB or power management in an STB
- H04N21/4433—Implementing client middleware, e.g. Multimedia Home Platform [MHP]
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/46—Multiprogramming arrangements
- G06F9/48—Program initiating; Program switching, e.g. by interrupt
- G06F9/4806—Task transfer initiation or dispatching
- G06F9/4843—Task transfer initiation or dispatching by program, e.g. task dispatcher, supervisor, operating system
- G06F9/485—Task life-cycle, e.g. stopping, restarting, resuming execution
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/46—Multiprogramming arrangements
- G06F9/54—Interprogram communication
- G06F9/545—Interprogram communication where tasks reside in different layers, e.g. user- and kernel-space
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/4302—Content synchronisation processes, e.g. decoder synchronisation
- H04N21/4305—Synchronising client clock from received content stream, e.g. locking decoder clock with encoder clock, extraction of the PCR packets
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/443—OS processes, e.g. booting an STB, implementing a Java virtual machine in an STB or power management in an STB
- H04N21/4431—OS processes, e.g. booting an STB, implementing a Java virtual machine in an STB or power management in an STB characterized by the use of Application Program Interface [API] libraries
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2209/00—Indexing scheme relating to G06F9/00
- G06F2209/48—Indexing scheme relating to G06F9/48
- G06F2209/482—Application
Definitions
- the present invention provides a software architecture framework for the soft set top and associates the different architectural components with the Opencable Advanced Set Top API
- CA Conditional Access
- CORBA Common Object Request Broker Architecture
- DSMCC Digital Storage Media Command and Control ;
- DTV Digital Television;
- HOP Internet Inter Orb Protocol
- IP Internet Protocol
- JVM Java Virtual Machine
- MIB Management Information Base
- RAM Random Access Memory
- RMI Remote Method Invocation
- SODA - denotes a security chip proprietary to
- S-vid - Video connector interface TCP - Transmission Control Protocol; UHF - Ultra High Frequency; UML - Unified Modeling Language; v.34 - a physical interface standard; and xDSL - high-speed Digital Subscriber Loop modem technology.
- a Set Top box also referred to as an Integrated Received Decoder (IRD) or a subscriber terminal, is a device that receives and decodes television signals for presentation by a television.
- the signals can be delivered over a satellite, through a cable plant, or by means of terrestrial broadcast.
- Modern set tops also support video on demand (VOD) , pay-per-view, interactive shopping, electronic commerce, and enable Internet connectivity and possibly Internet-based telephony.
- VOD video on demand
- the set top functionality is enabled through specialized hardware and software.
- Set Top software provided relatively simple functionality, was small and unstructured, and concerned primarily with minimizing the required memory capacity and processing cycles.
- the support of services such as data, Internet, Internet Telephony, etc. poses a new set of problems, including secure access by multiple users, multiple application management, management of resources, decoding, composition, coordination and presentation, of audio, video, graphics, and other data, etc.
- Existing Set Top software solutions do not solve these problems. Accordingly, it would be desirable to provide Set Top software that can progress in an evolutionary process from a relatively simple functionality, small, unstructured, memory- and processing cycle-saving software, to software that has a relatively complex functionality, and is larger, structured, and memory- and processing cycle-intensive .
- the fundamental technology underlying the next generation Set Top software architecture employs Java(tm), ActiveX (tm) or an equivalent type of component based object- oriented technology.
- the technology should allow the consideration of Set Top application and middleware software functionality independent from the operating system and hardware .
- the present invention provides a software architecture framework for the soft set top.
- the Set Top software allows the consideration of Set Top application and middleware software functionality independent from the operating system and hardware .
- the invention can support various type of functionality, such as multiple users, secure controlled access of resources, application download, registration, start, stop, and monitoring, resource download, registration, start, stop, and monitoring, and management of audio, video, and data presentations .
- the invention is used to provide a television set-top terminal with software.
- the terminal includes a computer readable medium having computer program code means, and means for executing the computer program code means to implement a layered software architecture.
- an application layer allows a user to interact with the terminal
- a middleware layer supports the application layer by providing Application Program Interfaces (APIs)
- an operating system layer supports the middleware layer
- a hardware layer supports the operating system layer.
- the layered software architecture allows configuration of a functionality of the application layer and the middleware layer independently of the operating system layer and the hardware layer.
- the layered software architecture includes a set top management layer that supports the application layer by configuring management services of the terminal .
- the management services include at least one of application, user, resource and presentation management.
- the set top management layer may implement a state information module to designate states of resources of the terminal .
- the state information module may be based on the ITU-T X.731 standard.
- the software architecture may further provide an application program interface (API) for providing a configurable functionality.
- the API may enable the terminal to support multiple users, or to secure controlled access of resources.
- the API may enable the terminal to download, register, start, stop, and monitor applications of the applications layer.
- the API may also enable the terminal to manage audio, video and/or other data presentations.
- the software architecture may also provide one or more of: a set top manager, a presentation manager, an application manager, a user manager, a resource manager, a set top agent, and a program view assistant.
- FIG. 1 illustrates a set top terminal software architecture evolution in accordance with the present invention.
- FIG. 2 illustrates a detailed set top terminal software architecture in accordance with the present invention.
- FIG. 3 illustrates a set top management top- level class diagram in accordance with the present invention.
- FIG. 4 illustrates a set top application manager top-level class diagram in accordance with the present invention.
- FIG. 5 illustrates a set top applications management relations top-level class diagram in accordance with the present invention.
- FIG. 6 illustrates a set top control application top-level class diagram in accordance with the present invention.
- FIG. 7 illustrates a set top user manager top- level class diagram in accordance with the present invention.
- FIG. 8 illustrates a set top resource manager top-level class diagram in accordance with the present invention.
- FIG. 9 illustrates a top-level class diagram of available set top devices in accordance with the present invention.
- FIG. 10 illustrates a set top software architecture framework in accordance with the present invention.
- the present invention provides a software architecture framework for the soft set top.
- FIG. 1 illustrates a set top terminal software architecture evolution in accordance with the present invention.
- Set Top software is seen as an evolutionary process that progresses from relatively simple functionality, small, unstructured, memory- and processing cycle-saving to relatively complex functionality, larger, structured, memory and processing cycles intensive.
- Java(tm), ActiveX (tm) or an equivalent type of component based object- oriented technology is seen as the fundamental technology underlying next generation Set Top software architectures .
- STAMP General Instrument Set Top Applications and Middleware Platform
- STAMP provides an apparatus and machinery for support of multiple users, secure controlled access of resources, application download, registration, start, stop, and monitoring, resource download, registration, start, stop, and monitoring, management of audio, video, data presentations, and some additional functionality.
- This technology allows the consideration of Set Top application and middleware software functionality independent from operating system and hardware.
- FIG. 1 illustrates the Set Top software architecture evolution in a simplified form.
- a present architecture includes a hardware layer 100, an operating system layer 110, and a native applications and middleware layer 120.
- the "native" applications and middleware are designed for use with a specific operating system and hardware environment.
- the applications and middleware layer 120 evolves to include a combination of proprietary applications and middleware 122, and the native applications and middleware 120.
- the applications and middleware layer 120 evolves to include only proprietary applications and middleware 122, which are independent of the operating system and hardware environment.
- FIG. 2 illustrates a detailed set top terminal software architecture in accordance with the present invention.
- the Figure illustrates the layered architecture of the STAMP near- erm solution.
- the architecture 200 includes a hardware layer 205, a device driver layer 210, and a real-time operating system layer 215.
- Another layer 222 includes STAMP interpreter tasks 220, compiled STAMP tasks 225, and native application tasks 230.
- a next layer 232 includes native APIs 265 and a number of sublayers, including a STAMP components sublayer 260, a STAMP application APIs sublayer 255, a standards API sublayer 250, encompassing standards such as DAVIC, DVB, ATSC, etc., a STAMP middleware APIs sublayer 245, and a sublayer with STAMP interpreter tasks 235 and a STAMP compiler 240.
- a STAMP set top management layer 270 is provided, then a layer 272 with STAMP applications 275 and native applications 280.
- An applet layer 285 is also provided.
- the layers within the software architecture indicate possible dependency from higher layer to lower layer.
- an application will use STAMP components 260, which in turn use some standard APIs 250, which may run on a STAMP interpreter 235 or may be compiled on a STAMP compiler 240.
- each layer is said to support or service the layers above it .
- the user interacts with the Set Top through the two topmost layers, the applet layer 285 and the application layers 275, 280. Any type of interaction with the set top is through applications or applets.
- the different layers have been defined with the following reasoning:
- the topmost layer contains processing entities which are temporary in nature and run within applications, e.g., such as a browser, and are downloaded over broadcast channels, over the Internet, or are distributed otherwise. Applets run within applications, and therefore take advantage of the applications' resources and can be restricted in their capabilities. Applications can be STAMP applications or native applications.
- Applications are permanent, or at least long-term. They are the only unit-level application processing entities and are part of the basic Set Top software distribution or some later upgrade through code download or other means .
- STAMP side they are implemented as lightweight process groups (e.g., Java thread groups) .
- STAMP Set Top Management controls all Set Top resources and multiplexes them between the different Set Top applications.
- STAMP component sets e.g., Java Bean Bags
- Different component sets are defined for different problem domains, e.g., graphics, networking, etc.
- the advantage of using component sets is the uniformity of components, i.e., it is easier to build a house out of bricks than variable size stones.
- STAMP components are built using a variety of APIs .
- the topmost API layer in the software architecture consists of those APIs that have been defined to create suitable abstractions for different domains such as conditional access, set top management, etc.
- STAMP components can use any of the API layers, but the preferred API access layer is the next lower one, which is the STAMP Applications API layer 255.
- STAMP Applications APIs are defined using Standard APIs which define industry-wide viable abstractions of common Set Top functionalities such as MPEG PSI, DVB SI, etc. STAMP Application APIs can use any of the API layers, but the preferred API access layer is the next lower one, which is the Standard API layer 250. 7. Standard APIs are defined using STAMP
- STAMP Middleware APIs execute on an interpreter (such as a JVM) or are compiled. 9. If STAMP Middleware APIs are interpreted, the interpreter executes as a task or a group of tasks within the Operating System 215.
- the Operating System 215 controls all the Set Top resources and enables interaction between the various tasks and resources.
- the Operating System 215 uses Device Drivers 210 to control and communicate with a variety of devices .
- Agents are processing units that enable functionality on behalf of another entity. Examples of agents might be a "Management” agent that allows the IRD to be remotely managed by some headend facility either via MPEG transport, modem, or other method. Or, a "Personal” agent might act on a user's behalf to monitor the user's actions and search for material that matches their behaviors (e.g., ProgramViewAssistant) .
- the GI SetTop Program consists of a single infinite loop which initializes and starts the processing threads.
- the first threads started are the "management threads", which service all other threads. These threads also catch exceptions thrown by initialized devices. 3.
- Application Threads are started as a result of actions by the SetTop Manager Thread Group .
- the SetTop Manager Thread Group control all tasks on the Set Top, inside or outside of the interpreter.
- the SetTop Manager Thread Group can stop the JVM and the Set Top itself.
- the Set Top Management Framework consists of the following management entities: 1.
- the Set Top Manager (SetTopManager) - controls the Set Top and initiates and starts all functions; configures all management services including application, user, resource, and presentation management; closely interacts with the presentation manager, which controls the presentation of all audio-visual materials; configures, starts, stops, and interacts with the Set Top Agent which enables remote Set Top management through the Internet or over the transport stream; configures, starts, stops, and interacts with the Program View Assistant.
- Presentation Manager - consists of three types of elements, namely decoders, compositors, and presenters; configures all presentable devices
- Application Manager manages the life- cycle of applications including, registration (loading) of applications, maintenance of a list of applications available, possibly decryption or decompression and move to address space, assessment of whether application can run based upon its execution attributes, start/stop/monitor application treads and allotted resources, vehicle for intra- application communication, propagates events to applications that care (registered) ; and supports a user interface for application management.
- User Manager manages a list of users, their preferences, and their access rights with 5 regards to set top resources. Verifies authorizations / security to enable components to operate. Supports a user interface for user preferences, user management, and access control management of the set top. 10 5.
- Resource Manager Provides access to all set top resources through a variety of resource specific APIs. Manages those resources. Supports a user interface for resource management .
- Set Top Agent A Java SNMP Agent with a 15 MIB that permits fault, configuration, accounting, performance, and security management of the Set Top.
- Program View Assistant An intelligent agent utilizing forward chaining based on the unification algorithm; minimally, it allows the
- UML Unified Modeling Language
- FIG. 3 illustrates a set top management top- level class diagram in accordance with the present invention.
- FIG. 3 uses the Unified Modeling Language, developed by Rational Software Corporation, USA.
- a class diagram represents the static structure of a system, and shows a pattern of behaviors that the system exhibits. This is accomplished by showing the existence of classes and their relationships.
- Each class is represented by a box with three sections. The top section lists the class name. The middle section denotes a list of attributes, and the bottom section denotes a list of operations. In the figures, only the class names are shown for simplicity.
- a solid line between classes denotes an association.
- a solid line with a white diamond tip denotes aggregation by reference, while a black diamond tip denotes aggregation by value .
- a triangular arrowhead denotes a restricted navigation, e.g., inheritance of operation but not of structure.
- a number may optionally be shown next to a line end that touches a class box to indicate the cardinality of the relationship, e.g., 0, 1 . . .
- "*" denotes "or more", e.g., "0. . . *” denotes "0 or more".
- "0. . .1" denotes an aggregation of 0 or 1.
- All management entities consist of processing threads (lightweight processes or tasks) . All of the management processing threads are part of the SetTopManager ThreadGroup 305, which is further subdivided into the ApplicationManager 310, PresentationManager 315, UserManager 320, ResourceManager 325, and SetTopAgent 330 ThreadGrou (s) .
- All management entities interface the set top management information base (SetTopMIB) 335.
- Each management entity (MngmtEntity) 355 controls a part of the MIB while the SetTopAgent 330 provides external access to the MIB (i.e., SNMP, RMI, CORBA, HOP, etc.) .
- MngmtEntity 355 is associated with a Thread 360 and a ThreadGroup 365, both from java.lang.
- the ApplicationManager 310 controls the applications registry (AppRegistry) 340, the presentation manager controls the PresentationRegistry 345, the user manager controls the user registry (UserRegistry) 350, and the resource manager controls the resource registry (ResourceRegistry) 355.
- the following subsections outline the different management entities in more detail .
- the invention enables the application of generic state information modules, such as those described in the ITU-T X.731 standard, within applications, resources, and the set-top MIB. This standard is part of the Q3 standard adopted by the Telecommunications Management Network (TMN) .
- Telecommunications Management Network Telecommunications Management Network
- TMN The TMN standard was developed by the CCITT (now the ITU-T) to provide an architecture to achieve an interconnection between various types of management systems and telecommunications equipment for the exchange of management information over standardized interfaces.
- CCITT now the ITU-T
- TMN is largely based on OSI management standards and includes :
- ITU-T M.3200 Management Services
- Management Function ITU-T M.3400
- Protocol Profiles for Management Interfaces ITU-T Q.811, Q.812, Q.773
- TMN Network Management Entity
- TMN functions exchange management information by means of the ITU-T X-700 series (OSI system management) standards.
- Each software component in a TMN layer represents itself and the resources it manages to the layer above as a managed object.
- the interactions between manager and agent are defined by means of CMISE/CMIP.
- the organization of the information architecture, the MIB contains managed objects for specific technologies that can be refined from the general template provided in ITU-T M-3100, the Generic Network Information Model. All TMN communication is based on the Agent-
- CMIP Common Management Information Service Elements
- CMIS Common Management Information Service
- the application manager controls a number of applications which are all built based on the generic applications template which enables the monitoring and control by the application manager.
- the application management APIs provide the system with application life-cycle and application integrity related functions.
- Application Verification and Validation API provides the system with functions for TBD.
- Appli cation Life Cycle API The application life cycle API provides the system with functions for loading, starting, pausing, stopping, and unloading applications.
- FIG. 4 illustrates a set top application manager top-level UML class diagram in accordance with the present invention.
- a ResourceClient class 405 is associated with a GenericApp class 410, which is associated with a Modem Proxy class 415, which is associated with a ResourceProxy class 420.
- the ResourceClient class 405 and ResourceProxy class 420 may be from org.davic . resources .
- the GenericApp class 410 may be from gi . settop . applications .
- Generic applications implement resource client 405 and resource proxy 420 interfaces for all resources used by the individual applications 410.
- FIG. 5 contains a UML class diagram illustrating these dependencies.
- FIG. 5 illustrates a set top applications management relations top-level UML class diagram in accordance with the present invention.
- the GenericApp class 410 may be associated with various classes, such as a Download class 505, a WatchTV class 510, an Email class 515, a Ticker class 520, a WebBrowser class 525, and an EPG class 530, each of which may be from gi . settop . applications .
- the interaction between the user and all management entities is accomplished through the set top control application, which, as are all other applications, is controlled by the application manager 310 through the generic application 410 template.
- FIG. 6 illustrates a set top control application top-level UML class diagram in accordance with the present invention.
- the set top control application (SetTopControlApp) 605 coordinates the interaction between the user through a set top control GUI (SetTopControlGUI) 610, and the different set top managers 310, 315, 320 and 325.
- the SetTopControlApp 605 and SetTopControlGUI 610 may be from gi . settop. applications .
- the user profile APIs provide the system with user-centric and account-centric functions.
- Billing API - The billing API provides the system with functions for managing accounts and performing account-related transactions.
- Preferences API The preferences API provides the system with functions for managing user-centric properties .
- Favori te Services API The favorite services
- API provides the system with functions for managing user-defined sets and subsets of services.
- the security APIs provide the system with functions for controlling and managing access to applications, content, and services.
- Content Control API The content control API provides the system with functions for controlling access to applications, content, and services based on user-centric criteria (parental locks) .
- Condi tional Access API The conditional access
- API provides the system with functions for controlling access to services based on service restrictions and account restrictions.
- the authentication and certificate management API provides the system with functions for TBD .
- Cryptography API - The cryptography API provides the system with functions for encrypting and decrypting content broadcast to the system, stored on the system, or sent from the system.
- User access control of the set top and user preferences management is handled by the user manager.
- the user manager uses the set top MIB as its information store and interacts with the users through the set top control application.
- FIG. 7 illustrates a set top user manager UML top-level class diagram in accordance with the present invention.
- a SecurityManager class 705 may be from java.lang.
- the resource management APIs provide the system with functions for measuring, allocating, and deallocating the user of constrained hardware systems and services.
- System Profile API provides the system with functions for determining system resource and configuration information.
- Synchronization API - The synchronization API provides the system with functions for synchronizing disparate resources such as audio and video decoders .
- Resource Allocation API The resource allocation API provides the system with functions for requesting, accessing, and releasing hardware systems and services.
- System Test API provides the system with functions for external applications to test hardware systems and services.
- System Diagnostic API The system diagnostic API provides the system with functions for built-in- test and diagnosing system faults.
- FIG. 8 illustrates a set top resource manager UML top-level class diagram in accordance with the present invention.
- the access to all set top resources by the set top applications is managed through the resource manager 325.
- the resource manager may use the DAVIC Resource API.
- FIG. 9 illustrates a UML top-level class diagram of available set top devices in accordance with the present invention.
- the GenericDevice class 805 may be associated with one or more of the following example classes: HardDrive 902, DiskDrive 904, RAMDisk 906, SmartCard 908, DVD 910, DC2Sat 912, ATSCTerminal 914, MPEG 916, MPEG Video 918, MPEG/AC3Audio 920, Terminal 922, DVBSat 924, Keyboard 926, InputDevice 928, HSSIO 930, VideoOut 932, AudioOut 934, FrontPanelDisplay 936, SODA 938, IEEE1284 Parallel, UHFRemote 942, InfraredRemote 944, IEEE1394 946, AnalogAudio 948, S/PDIG Digital Audio 950, Communications 952, DigitalCable 954, XDSL 956, V34 958, lOBaseT 960, ATM 962, SMPTEVideoOut 964, RGBVideoOut 966, and CCIR16VideoOut 968.
- Each of the classes may be from gi . set
- the device control APIs provide the system with functions for managing devices.
- Media control APIs include:
- Tuning and Demul tiplexing API The tuning and demultiplexing API provides the system with functions for selecting services and streams.
- Decoder API - The decoder API provides the system with functions for decoding video streams, audio streams, data streams, and elements within those streams.
- the playback control API provides the system with functions for managing the playback of streams.
- Presentation management and the Presentation API play a role in two different types of scenarios within the Set Top: 1. Presentable objects (graphics, video, audio) being created as a result of an application activation or application related processing.
- Presentation objects being created as a result of a decoding process of data coming over a carrousel, over the Internet, etc.
- the Presentation API and Presentation Manager (PM) facilitate both scenarios in the same manner, i.e., the same object is created and has the same methods that can be activated.
- the presentation APIs provide the system with functions for displaying and controlling the display of information, status, content, and control to the user.
- Video Presentation API provides the system with functions for managing the display of video data to the primary display surface .
- Front Panel Display Manager API provides the system with functions for managing the display of information, status, and control to front panel display surfaces.
- the graphic presentation API provides the system with functions for managing the display of graphic data to the primary display surface.
- Font Management API The font management API provides the system with functions for loading, selecting, and displaying fonts on the primary display surface.
- Audio Presentation API The audio presentation
- API provides the system with functions for managing the playback of audio data to the primary audio outputs .
- a number of applications and applets within STAMP have GUIs. These include: 1. Installation & Diagnostic screens;
- Set Top option screens which provide access to major Set Top features and applications and implement configuration screens (e.g., rating preferences, language preferences, audio/video modes, etc . ) ;
- Java Applets are supported on Set Tops that host either a Java enabled Java Browser or a Java enabled Native Browser.
- the applet is downloaded via http over the Internet or via a DSMCC carrousel service .
- Watch TV The system provides a simple broadcast television viewing environment. The user may channel up, channel down, return to a previous channel, and select a specific channel. Watch TV wi th Parental Locks - The system may provide a means for the user to limit access to services, channels, or events. A password mechanism may over-ride the access limitations. Access may be based on channel, event rating, event theme, or some other criteria.
- the system may provide a means to limit access to services, channels, or events based on the access rights of the user as a customer of the service provider.
- the access rights may pertain to service limitations or account limitations.
- the system may make available more than one audio stream for a specific video stream. The user has the opportunity to select an alternative audio stream for playback in synchronization with the video stream.
- the system may make available one or more text or graphic streams that may be synchronized and superimposed upon the video stream.
- the downloading application scenarios describe situations in which a broadcast application or data service is being bought or stored on the system. Watch TV wi th Persistent Unsynchronized Data
- the system provides a data service that is not synchronized to the current audio and video stream (for example, a stock ticker) .
- the application that uses the data service (for example, the stock ticker graphical user interface) is already resident on the system, only the data (the stock quotes) is transmitted in this scenario.
- Watch TV wi th Persistent Synchronized Data Service The system provides a data service that is synchronized to the current audio and video stream (for example, sport statistics that correspond to the player currently on screen) .
- the application that uses the data service is already resident on the system, only the data is transmitted in this scenario.
- the system provides a means of scheduling and subsequently downloading an application located on a service that may not be the current service.
- Watch TV wi th Impulse Buy of Appli cation The system provides a means for the user to be notified of an available application and a means for the user to purchase and download the application. Watch TV wi th Background Application Update -
- the system provides a means for the user to download an application in the background (without disrupting the current audio and video presentation) .
- Teleshopping The teleshopping scenarios describe situations in which the user may request information, products, or services through applications made available on the system.
- the system provides a means for the user to request information that corresponds to the currently broadcast video and audio. For example, during an automobile commercial, the user may request a brochure.
- the system provides a means for the user to purchase a product that corresponds to the currently broadcast video and audio. For example, during a commercial for a commemorative plate, the user may purchase the plate .
- the system provides a means for the user to navigate through a catalog that contains graphics, video, and audio.
- the user can select and purchase a product or service in the catalog.
- the system provides a means for the user to navigate through a catalog that contains graphics and audio.
- the user can select and purchase a product or service in the catalog.
- the system provides a means for the user to navigate through a catalog that contains graphics.
- the user can select and purchase a product or service in the catalog. ⁇ 3.4. Near Video on Demand
- the near video on demand (NVOD) scenarios describe situations in which the user can select movies (or some other audio-video service) from a multiplex of similar movies or service.
- Pay-per-View - The system provides a means for the user to purchase a service from a multiplex of services. Interactivity is generally limited to the selection and purchasing process.
- Tnteractive Pay-per-View - The system provides a means for the user to purchase a service from a multiplex of services. The user can "pause" the service until the next availability of the service. ⁇ 3.5.
- Gaming allow a user to play a game via a network-delivered service. Games may be single-user or multi-user games either located entirely on the system (local) or played over a network.
- Watch TV and Local Parti cipa te The system provides a means for the user to watch a television program and "play along" with a single-user local application. For example, during “Wheel of Fortune” the user can "spin the wheel” and make their own guess.
- iVatch TV and Mul ti - user Parti cipa te - The system provides a means for the user to watch a television program and "play along", competing with other users.
- Single Player Game - The system provides a means for the user to play a system-based game with no additional remotely located participants.
- Multi-user Game The system provides a means for the user to play a system-based game in which there is additional, remotely located, participants. ⁇ 3.6. Internet Access
- the internet access scenarios allow the user to access internet-based content or functions: html pages, email, chat, streaming audio, etc.
- Browse the Web - The system provides a means for the user to browse web-sites.
- Email The system provides a means for the user to read, write, and respond to electronic mail.
- Chat The system provides a means for the user to communicate in real-time with other users on the Internet .
- the system provides a means for the user to simultaneously watch an audio and video service while performing an Internet-based activity that is made available with or through the audio-video service.
- the system provides a means for the user to watch an audio or video service that is made available from an Internet-based item.
- Pay-per-View News Service The system provides a means for the user to purchase an audio, video, or text-centric news service. The service might provide a headline-level of detail, an in-depth level of detail, editorial information, or some other level of service.
- Query for News Item The system provides a means for the user to query multiple available sources for one or more "articles" pertaining to user-defined or user-selected criteria.
- Personalized News The system provides a means for the user to tailor a news service to their preferred topics.
- Subscription Services The system provides a means for the user to purchase and schedule a subscription to an audio, video, or text-centric news service.
- the electronic program guide scenarios allow the user to access channel, service, and event information. Generally the user may also control the system or navigate within the system using this information.
- the system provides information on what service is currently available on all known channels and what services are available for some predetermined time in the future.
- Request Preview from Guide - The system provides a means for the user to request a sample of a service. For example, the user might be able to request a trailer for a motion picture or a demo of an application.
- Purchase Event from Guide - The system provides a means for the user to purchase a future event or service from within the electronic program guide .
- Setup Program Reminder - The system provides a means for the user to schedule a notification of a future event at a future point in time.
- the system provides a means for the user to purchase an application for download from within the electronic program guide .
- the distance learning scenarios describe a virtual classroom in which students and teachers are not co-located.
- the system provides audio and video of a virtual classroom.
- the system provides a means for the user to participate with an educator or other students (located at different sites) through chat.
- the system provides audio and video of a virtual classroom.
- the system provides a means for the user to participate with an educator or other students (located at different sites) through chat. ⁇ 3.10. Home Banking
- the home banking scenarios describe services available to the user comparable to services available at a retail bank.
- Information Retrieval The system provides a means for the user to access information pertaining to banking functions and their personal accounts .
- Transaction - The system provides a means for the user to perform typical retail bank electronic transfers.
- the system provides a means for the user to apply for retail bank services such as credit cards, loans, and checking.
- Steping The system provides a means for the user to get personalized financial assistance. ⁇ 3.11. Navigation
- the navigation scenarios describe situations in which the user activates services, applications, and content available on the system.
- Application Activation The system provides a means for the user to activate (run or launch) an application.
- Application Removal The system provides a means for the user to remove an application from system memory, local storage, or remote storage associated with the system.
- the system provides a means for user to identify user-centric preferences related to operation of the system or its user interface .
- the system provides a means for the user to identify or customize the set of or subset of available services.
- Java Bags are defined to facilitate domain specific (e.g., IPG) application component building sets . These set are NOT disjoint.
- the Java Bean Bags are:
- GI Application System Bean Bag this set of components comprises all beans that are generic to all different application component sets. This may include information exchange mechanisms, synchronization mechanisms, timing mechanisms, storage mechanisms, etc.
- GI GUI Bean Bag this set of components includes all GUI beans that are generic to all different applications; this may include lists, buttons, sliders, etc.
- GI HotJava Bean Bag this set of components includes all components that can be a part of a browser.
- GI IPG Bean Bag this set of components includes all components that can be a part of the
- GI Tuning Bean Bag this set of components includes all components that can be a part of a tuning application. 6.
- GI E-mail Bean Bag - this set of components includes all components that can be a part of an e-mail application.
- GI Download Bean Bag this set of components includes all components that can be a part of a download application.
- GI Ticker Bean Bag this set of components includes all components that can be a part of an information ticker application. .
- GI Game Player Bean Bag - this set of components includes all components that can be a part of a game player application.
- APIs Application Programming Interfaces
- APIs provide the system with a hardware and operating system independent abstraction layer.
- broadcast applications to be delivered to systems of widely varying processors and operating systems: from set-top boxes with a RISC processor and a real-time operating system to a personal computer with a microprocessor and a non- real-time operating system.
- Event management APIs provide the system with functions for sending and receiving messages, events, and "interrupts.”
- Event Dispatch API - The event dispatch API provides the system with functions for sending messages, events, and "interrupts.”
- the user input API provides the system with functions for receiving and dispatching user-originated events (keyboard, mouse, front panel, remote control, etc.).
- Inter-Process Communication API provides the system with functions for sending messages and events between applications, processes, and threads.
- Scheduling API The scheduling API provides the system with functions for establishing time and date triggered events and "interrupts”. ⁇ 5.2. Application Utility APIs
- the application utili ty APIs provide the system with general purpose functions commonly used by applications .
- Math API The math API provides the system with functions for performing math routines.
- Time API - The time API provides the system with functions for accessing time and date and performing common time routines.
- String API The string API provides the system with functions for loading, unloading, and manipulating strings.
- List APT The list API provides the system with functions for managing lists and other common dynamic data structures .
- File API - The file API provides the system with functions for performing file-related operations .
- the localization API provides the system with functions for performing common localization operations.
- Communications API High-level interface to all communications and communications management components including dial-up networking, Internet, routing, transport stream, etc.
- Object Services API Support for information exchange between objects; this includes an information model, types, relationships, operations, characteristics, naming, registry, distribution, etc.
- Database Services API support for data store and retrieval mechanisms including a generic file system and registry.
- Download Services API support for download services.
- the content management APIs provide the system with content life-cycle and content integrity related functions .
- API provides the system with functions for TBD.
- Content Download API The content download API provides the system with functions for storing applications broadcast to the system.
- Content Version Control API The content version control API provides the system with functions for managing the stored or loaded version of content .
- Content Storage API The content storage API provides the system with functions for storing and retrieving content in the system or with remote storage .
- the system information APIs provide the system with MPEG-2 system information and program information stream related functions.
- Event Information API provides the system with functions for interpreting the event information stream.
- Channel and Service Map API provides the system with functions for interpreting the system and service information streams ⁇ 5.5.
- This API enables set top management applications by providing component hook-up functionality, component monitoring and control functionality, initialization, startup, shut down and coordination of all internal processes/daemons/applications; processing of asynchronous events as well as events resulting from collecting information; etc.
- Operations Support API - facilitates the Set
- Top Management API through Java/non-Java interfaces as well as an SNMP agent API.
- the MPEG API (org. davic .mpeg) - includes the MPEG Component API, the MPEG Section Filter API, and the MPEG TransportStream API .
- the Tuning API (org.davic .net . tuning) - tuning of network interfaces including multiple network interfaces (local and/or remote) .
- the Conditional Access API (org.davic.net .ca) - a CA system independent interface for accessing CA functionality.
- the DVB SI API (org . davic . net . dvb . si) - an interface to DVB SI database (including the access to the actual transport stream through an optional cache) .
- the ATSC PSIP API (org . davic . at ⁇ c .psip) - an interface to the ATSC SI and PSI database (including the access to the actual transport stream through an optional cache) .
- the Media Player API (or . davic .media) - an extension of the Java Media Framework to facilitate Set Tops.
- the DSM-CC U-U API (davic . dsmccuu) - implements a subset of the DSM-CC-U-U APIs defined in ISO/IEC 13818-6. ⁇ 5.8. Standard Java APIs
- the JDK 1.1 packages included in PersonalJava are: Java. applet j ava . awt j ava . awt . datatransfer j ava . awt . event j ava . awt . image j ava . awt . peer
- the Java Text API supports internationalization.
- Java Security APIs are a framework for developers to easily and securely include security functionality in their applets and applications. This functionality includes cryptography with digital signatures, encryption, and authentication.
- Java Commerce API will bring secure purchasing and financial management to the Web.
- JavaWallet is the initial component, which defines and implements a client-side framework for credit card, debit card, and electronic cash transactions.
- Java Media Framework specifies a unified architecture, messaging protocol and programming interface for media players, capture and conferencing. JMF will be published as three APIs. The Java Media Player will be published first; Java Media Capture and Java Media Conference APIs will be published subsequently. Java Media Player is an API for synchronization, control, processing and presentation of compressed streaming and stored timed media, including video and audio.
- Java RMI including CORBA
- object- oriented distributed processing API that supports CORBA.
- FIG. 10 illustrates a set top software architecture framework in accordance with the present invention.
- the architecture 1000 corresponds to the architecture 200 of FIG. 2, but provides further details and examples for each layer.
- the device driver kernel modules in the layer 210' correspond generally to the classes in FIG. 9.
- Network Protocols are used at all levels of the ASB, to communicate with other clients, applications, and servers. Although applications also make use of network protocols, many of these are actually OS-implemented network stacks called through the OS ⁇ -> Application APIs. Protocols specifically dealing with application-level client- server issues will be covered in the Client ⁇ ->Server section.
- Video and Data Network / Transport Protocols These protocols are used for network packet routing, connection establishment, control, and teardown. Industry open standards are TCP for connection-oriented transport, UDP for connectionless, real-time traffic transport, and IP for packet routing. RSVP is used for network bandwidth and channel reservation. MPEG-2 is the clear favorite for video transpor .
- FTP file transfer
- HTTP for WWW access and HTML transport
- NNTP for news server access
- SMTP and IMAP for mail.
- chat There is no standard for chat, however.
- LDAP rapidly emerging as the standard directory for TCP/IP networks, is a lightweight version of X.500's more complex Directory Access Protocol. LDAP has been adopted by over 40 major software vendors, and supports access-independent data views, hierarchical storage, multiple storage schemes, rich access control, multiple database types and instances, and network replication.
- Protocols These APIs control modulation, encoding, and management of data streams over the cable plant. ⁇ 7.1.5. Network Encryption Protocols
- the operating system provides applications with two sets of crucial services that allow those applications to be implemented on top of the system.
- Base OS Services such as scheduling, virtual memory, multi-threading, etc.
- OS Standard Libraries are predefined code modules that applications are encouraged to use when implementing functionality supported by the OS. For example, a network application is encourage to use the OS's network libraries, almost all apps are encouraged to use the OS's GUI libraries, etc.
- the standard libraries are present to maintain consistency, prevent duplication of effort, and speed up development. Sometimes, applications will bypass certain libraries for aesthetic reasons or to optimize code.
- APIs control the heart of the set-top box.
- Native applications (those written specifically for the ASB, requiring maximum performance and hardware interaction) will be implemented based on OS services and libraries, provided through these APIs.
- APIs control drawing and rendering of 2D and 3D objects.
- Application programmers use these to simplify graphic functions. They are also used to implement the graphical user interface and windowing tool-kits for applications.
- HAL Hardware Abstraction Layer
- the HAL separates the hardware from the OS, and makes the OS portable across any platform that supports the HAL.
- Registry APIs Storage format and control for local Flash RAM storage .
- APIs are used when one OS is implemented on top of another, as is the case with virtual machines, or two OSs communicate with each other.
- the latter case is rare, and is usually handled through network protocols, although some component and object models allow distributed objects to communicate across OSs.
- Competitors are Microsoft's Distributed Component Object Model (DCOM) and JavaBeans / CORBA (Common Object Request Broker Architecture) .
- Remote Procedure Call mechanisms (ONC, DCE) also fall within this API . ⁇ 7.5. Client ⁇ -> Server APIs
- Clients and servers will often pass application data through standard networking protocols, but remote client management, authentication, software downloading, and updating are handled through specific client-server APIs. These APIs usually tend to be closed and fragmented, due to the large number of potential combinations and issues.
- Network / Remote FileSystem Controls file storage and retrieval methods.
- Control authentication for users, vendors, and products .
- Calendar Server Protocols Determines storage and interaction formats for user calendaring and scheduling functions .
- Synchronization Protocols Synchronization Protocols
- Audio Document Storage Formats Encoding of sound and music.
- This set of APIs controls serving and delivery of content from various servers to the client . It is really a subset of the client-server APIs, but is explicitly mentioned since some vendors may attempt to achieve lock- in by requiring proprietary servers to distribute content.
- This set of APIs controls serving and delivery of content from various servers to the client. It is really a subset of the client-server APIs, but is explicitly mentioned since some vendors may attempt to achieve lock- in by requiring proprietary servers to distribute content.
- the browser ⁇ -> resident engines interaction is really a sub-category of OS ⁇ -> Applications, and is explicitly broken out due to its strategic importance and the fact that most browser vendors subsume this API into their product.
- the resident HTML, VRML, Java, and caching engines are services that the OS provides to all interested applications.
- most browser vendors bundle these important engines into the browser, thereby concealing and controlling these important APIs, even though they should be explicitly exposed.
- the OS provider should document the APIs used, and provide rights to these APIs for free, in perpetuity.
- the present invention provides a Set Top software that allows the consideration of Set Top application and middleware software functionality independent from the operating system and hardware.
- the invention can support various type of functionality, such as multiple users, secure controlled access of resources, application download, registration, start, stop, and monitoring, resource download, registration, start, stop, and monitoring, management of audio, video, data presentations .
- the invention is suitable for use with virtually any type of network, including cable or satellite television broadband communication networks, local area networks (LANs), metropolitan area networks (MANs) , wide area networks (WANs) , internets, intranets, and the Internet, or combinations thereof.
- LANs local area networks
- MANs metropolitan area networks
- WANs wide area networks
- internets intranets
- intranets and the Internet, or combinations thereof.
Abstract
Description
Claims
Priority Applications (7)
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KR1020017004828A KR20010080210A (en) | 1998-10-19 | 1999-09-22 | Television set-top box with configurable functionality |
BR9914604-5A BR9914604A (en) | 1998-10-19 | 1999-09-22 | TV set top box with configurable functionality |
JP2000577830A JP2002528971A (en) | 1998-10-19 | 1999-09-22 | Television set-top box with configurable features |
CA002346891A CA2346891A1 (en) | 1998-10-19 | 1999-09-22 | Television set-top box with configurable functionality |
EP99948392A EP1123620A1 (en) | 1998-10-19 | 1999-09-22 | Television set-top box with configurable functionality |
HK02104399.7A HK1043464A1 (en) | 1998-10-19 | 2002-06-12 | Television set-top box with configurable functionality |
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Also Published As
Publication number | Publication date |
---|---|
CA2346891A1 (en) | 2000-04-27 |
KR20010080210A (en) | 2001-08-22 |
AU766861B2 (en) | 2003-10-23 |
EP1123620A1 (en) | 2001-08-16 |
HK1043464A1 (en) | 2002-09-13 |
JP2002528971A (en) | 2002-09-03 |
CN1326638A (en) | 2001-12-12 |
BR9914604A (en) | 2001-12-11 |
AU6158499A (en) | 2000-05-08 |
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