CA2316232A1 - A method and apparatus for reducing flicker in the television display of network application data - Google Patents

A method and apparatus for reducing flicker in the television display of network application data Download PDF

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Publication number
CA2316232A1
CA2316232A1 CA002316232A CA2316232A CA2316232A1 CA 2316232 A1 CA2316232 A1 CA 2316232A1 CA 002316232 A CA002316232 A CA 002316232A CA 2316232 A CA2316232 A CA 2316232A CA 2316232 A1 CA2316232 A1 CA 2316232A1
Authority
CA
Canada
Prior art keywords
display
network application
application data
interlaced
data
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002316232A
Other languages
French (fr)
Other versions
CA2316232C (en
Inventor
Vlad Bril
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CSR Technology Inc
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2316232A1 publication Critical patent/CA2316232A1/en
Application granted granted Critical
Publication of CA2316232C publication Critical patent/CA2316232C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/01—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/445—Receiver circuitry for the reception of television signals according to analogue transmission standards for displaying additional information
    • H04N5/45—Picture in picture, e.g. displaying simultaneously another television channel in a region of the screen
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/445—Receiver circuitry for the reception of television signals according to analogue transmission standards for displaying additional information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/01—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level
    • H04N7/0117—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level involving conversion of the spatial resolution of the incoming video signal
    • H04N7/012—Conversion between an interlaced and a progressive signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/01—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level
    • H04N7/0127—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level by changing the field or frame frequency of the incoming video signal, e.g. frame rate converter
    • H04N7/0132—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level by changing the field or frame frequency of the incoming video signal, e.g. frame rate converter the field or frame frequency of the incoming video signal being multiplied by a positive integer, e.g. for flicker reduction
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/445—Receiver circuitry for the reception of television signals according to analogue transmission standards for displaying additional information
    • H04N5/44504—Circuit details of the additional information generator, e.g. details of the character or graphics signal generator, overlay mixing circuits
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S348/00—Television
    • Y10S348/91—Flicker reduction

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computer Graphics (AREA)
  • Controls And Circuits For Display Device (AREA)
  • Picture Signal Circuits (AREA)
  • Transforming Electric Information Into Light Information (AREA)
  • Television Systems (AREA)

Abstract

A television system (100) with an interlaced display screen for displaying network application data. Pixel data elements representing network application data display are received in a non-interlaced mode. The received data is filtered (480) to reduce sharp transitions in the display. The filtered data is provided in an interlaced format (490) for display on the television display screen. The interlaced image display is combined with the television signal display by selecting one of them on a point-by-point basis. Flicker is reduced substantially in the final display of network application data due to the filtering.
CA002316232A 1997-12-31 1998-12-14 A method and apparatus for reducing flicker in the television display of network application data Expired - Lifetime CA2316232C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/001,410 US5959680A (en) 1997-12-31 1997-12-31 Method and apparatus for reducing flicker in the television display of network application data
US09/001,410 1997-12-31
PCT/US1998/026544 WO1999034595A1 (en) 1997-12-31 1998-12-14 A method and apparatus for reducing flicker in the television display of network application data

Publications (2)

Publication Number Publication Date
CA2316232A1 true CA2316232A1 (en) 1999-07-08
CA2316232C CA2316232C (en) 2009-08-11

Family

ID=21695891

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002316232A Expired - Lifetime CA2316232C (en) 1997-12-31 1998-12-14 A method and apparatus for reducing flicker in the television display of network application data

Country Status (8)

Country Link
US (2) US5959680A (en)
EP (1) EP1042915A1 (en)
JP (1) JP2002500478A (en)
KR (1) KR20010032562A (en)
CN (1) CN1283362A (en)
AU (1) AU1726099A (en)
CA (1) CA2316232C (en)
WO (1) WO1999034595A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5963262A (en) * 1997-06-30 1999-10-05 Cirrus Logic, Inc. System and method for scaling images and reducing flicker in interlaced television images converted from non-interlaced computer graphics data
US6141055A (en) * 1997-07-10 2000-10-31 Aitech Int'l Corporation Method and apparatus for reducing video data memory in converting VGA signals to TV signals
US6542162B1 (en) 1998-06-15 2003-04-01 International Business Machines Corporation Color mapped and direct color OSD region processor with support for 4:2:2 profile decode function
JP4008580B2 (en) * 1998-06-25 2007-11-14 株式会社東芝 Display control apparatus and interlace data display control method
CN1310430B (en) * 2000-02-22 2010-04-28 明基电通股份有限公司 Image processing method to smooth the border of image area
US6903753B1 (en) * 2000-10-31 2005-06-07 Microsoft Corporation Compositing images from multiple sources
US6774903B1 (en) * 2000-11-06 2004-08-10 Ati International Srl Palette anti-sparkle enhancement
US20050185092A1 (en) * 2005-05-14 2005-08-25 Akio Tanaka Flicker Reduction System for Displaying Web Pages on Television

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6356316B1 (en) * 1982-01-04 2002-03-12 Video Associates Labs, Inc. Microkeyer: microcomputer broadcast video overlay device and method
US5257348A (en) * 1990-05-24 1993-10-26 Apple Computer, Inc. Apparatus for storing data both video and graphics signals in a single frame buffer
US5327156A (en) * 1990-11-09 1994-07-05 Fuji Photo Film Co., Ltd. Apparatus for processing signals representative of a computer graphics image and a real image including storing processed signals back into internal memory
JPH06292152A (en) * 1993-02-03 1994-10-18 Sanyo Electric Co Ltd Video signal converter
JPH07177474A (en) * 1993-12-16 1995-07-14 Nippon Television Network Corp Scanning line converter and recording and reproducing device using same
JP3521289B2 (en) * 1994-01-26 2004-04-19 日本テレビ放送網株式会社 Interlaced scanning signal generation method
US5510843A (en) * 1994-09-30 1996-04-23 Cirrus Logic, Inc. Flicker reduction and size adjustment for video controller with interlaced video output
JPH08163510A (en) * 1994-11-29 1996-06-21 Sanyo Electric Co Ltd Video signal processing circuit
US5815208A (en) * 1994-12-09 1998-09-29 Methode Electronics, Inc. VGA to NTSC converter and a method for converting VGA image to NTSC images
US5781241A (en) * 1996-11-08 1998-07-14 Chrontel, Inc. Apparatus and method to convert computer graphics signals to television video signals with vertical and horizontal scaling requiring no frame buffers
US5894330A (en) * 1997-01-23 1999-04-13 Silicon Integrated Systems Corp. Adaptive anti-flicker method for VGA to TV data conversion
US5963262A (en) * 1997-06-30 1999-10-05 Cirrus Logic, Inc. System and method for scaling images and reducing flicker in interlaced television images converted from non-interlaced computer graphics data
JPH11187360A (en) * 1997-10-15 1999-07-09 Hitachi Ltd Image processor

Also Published As

Publication number Publication date
KR20010032562A (en) 2001-04-25
AU1726099A (en) 1999-07-19
US5959680A (en) 1999-09-28
CN1283362A (en) 2001-02-07
US6005630A (en) 1999-12-21
WO1999034595A1 (en) 1999-07-08
JP2002500478A (en) 2002-01-08
CA2316232C (en) 2009-08-11
EP1042915A1 (en) 2000-10-11

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Legal Events

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EEER Examination request
MKEX Expiry

Effective date: 20181214

MKEX Expiry

Effective date: 20181214