WO2007112019A3 - Artifact-free transitions between dual display controllers - Google Patents

Artifact-free transitions between dual display controllers Download PDF

Info

Publication number
WO2007112019A3
WO2007112019A3 PCT/US2007/007282 US2007007282W WO2007112019A3 WO 2007112019 A3 WO2007112019 A3 WO 2007112019A3 US 2007007282 W US2007007282 W US 2007007282W WO 2007112019 A3 WO2007112019 A3 WO 2007112019A3
Authority
WO
WIPO (PCT)
Prior art keywords
display
display device
processor
artifact
frames
Prior art date
Application number
PCT/US2007/007282
Other languages
French (fr)
Other versions
WO2007112019A2 (en
Inventor
Mark J Foster
Original Assignee
One Laptop Per Child Ass Inc
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 One Laptop Per Child Ass Inc filed Critical One Laptop Per Child Ass Inc
Publication of WO2007112019A2 publication Critical patent/WO2007112019A2/en
Publication of WO2007112019A3 publication Critical patent/WO2007112019A3/en

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/36—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the display of a graphic pattern, e.g. using an all-points-addressable [APA] memory
    • G09G5/363—Graphics controllers
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G06F1/32—Means for saving power
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/001—Arbitration of resources in a display system, e.g. control of access to frame buffer by video controller and/or main processor

Abstract

A method, system and computer program product for driving a display device by a display system is provided. The display system includes a processor, a first display controller, a second display controller and the display device. The first display controller receives display frames that are sent by the processor. The first display controller drives the display device when the processor sends new display frames. When the same display frames are continually sent by the processor, the control of the display device is switched to the second display controller, which is optimized for low-power operation. The control of the display device is switched in proximity to an input vertical synchronization (V-sync) pulse.
PCT/US2007/007282 2006-03-23 2007-03-22 Artifact-free transitions between dual display controllers WO2007112019A2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US78506506P 2006-03-23 2006-03-23
US60/785,065 2006-03-23
US90612207P 2007-03-09 2007-03-09
US60/906,122 2007-03-09

Publications (2)

Publication Number Publication Date
WO2007112019A2 WO2007112019A2 (en) 2007-10-04
WO2007112019A3 true WO2007112019A3 (en) 2008-04-24

Family

ID=38541690

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2007/007282 WO2007112019A2 (en) 2006-03-23 2007-03-22 Artifact-free transitions between dual display controllers

Country Status (4)

Country Link
JP (1) JP4992140B2 (en)
KR (1) KR100910683B1 (en)
TW (1) TWI344106B (en)
WO (1) WO2007112019A2 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8300056B2 (en) * 2008-10-13 2012-10-30 Apple Inc. Seamless display migration
TWI404012B (en) * 2009-07-01 2013-08-01 Mstar Semiconductor Inc Display controller and corresponding video signal transmiitting method and system
US9318056B2 (en) 2010-02-25 2016-04-19 Nokia Technologies Oy Apparatus, display module and methods for controlling the loading of frames to a display module
KR101682116B1 (en) * 2010-03-30 2016-12-02 삼성전자주식회사 Display controller and display system having the display controller
TWI533286B (en) 2010-09-06 2016-05-11 元太科技工業股份有限公司 Flat display apparatus
US9047800B2 (en) * 2012-02-15 2015-06-02 Apple Inc. Methods for external display resolution selection
TWI496134B (en) * 2013-07-22 2015-08-11 Elitegroup Computer Sys Co Ltd Integrated computer, computer system and input/output signal automatic detecting method for the integrated computer
CN103945018B (en) * 2014-04-29 2017-12-01 深圳市明微电子股份有限公司 Display system and its bi-directional address collocation method in parallel
KR102261510B1 (en) * 2014-11-04 2021-06-08 삼성디스플레이 주식회사 Display apparatus and method of operating display apparatus
KR102431149B1 (en) 2015-10-05 2022-08-11 티씨엘 차이나 스타 옵토일렉트로닉스 테크놀로지 컴퍼니 리미티드 Display apparatus and method of operating display apparatus
US20210366443A1 (en) * 2020-05-24 2021-11-25 Novatek Microelectronics Corp. Displaying method and processor
TWI750979B (en) * 2020-12-30 2021-12-21 新唐科技股份有限公司 Control device and display device for reducing usage pin of component

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5945972A (en) * 1995-11-30 1999-08-31 Kabushiki Kaisha Toshiba Display device
US6333750B1 (en) * 1997-03-12 2001-12-25 Cybex Computer Products Corporation Multi-sourced video distribution hub
US20040217954A1 (en) * 2003-05-01 2004-11-04 O'gorman Patrick Reduced power consumption for a graphics accelerator and display
US6930664B2 (en) * 2002-04-12 2005-08-16 Lg. Philips Lcd Co., Ltd. Liquid crystal display
US20050268236A1 (en) * 2004-05-24 2005-12-01 Makoto Kosaka Information processing apparatus and display control method for information processing apparatus

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6624816B1 (en) * 1999-09-10 2003-09-23 Intel Corporation Method and apparatus for scalable image processing
JP2004288087A (en) * 2003-03-25 2004-10-14 Toshiba Corp Information processor
TW594661B (en) * 2003-05-30 2004-06-21 Fujitsu Ltd Control apparatus of display apparatus, control method and electronic machine
JP4861639B2 (en) 2004-06-23 2012-01-25 パナソニック株式会社 Control device for multiple display devices
JP5076317B2 (en) * 2005-12-27 2012-11-21 ソニー株式会社 Information processing apparatus, information processing method, and program thereof
JP4868313B2 (en) * 2006-03-23 2012-02-01 ワン ラップトップ パー チャイルド アソシエイション インク． Display sub-system power consumption reduction method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5945972A (en) * 1995-11-30 1999-08-31 Kabushiki Kaisha Toshiba Display device
US6333750B1 (en) * 1997-03-12 2001-12-25 Cybex Computer Products Corporation Multi-sourced video distribution hub
US6930664B2 (en) * 2002-04-12 2005-08-16 Lg. Philips Lcd Co., Ltd. Liquid crystal display
US20040217954A1 (en) * 2003-05-01 2004-11-04 O'gorman Patrick Reduced power consumption for a graphics accelerator and display
US20050268236A1 (en) * 2004-05-24 2005-12-01 Makoto Kosaka Information processing apparatus and display control method for information processing apparatus

Also Published As

Publication number Publication date
WO2007112019A2 (en) 2007-10-04
JP2007298962A (en) 2007-11-15
KR100910683B1 (en) 2009-08-04
TW200745940A (en) 2007-12-16
JP4992140B2 (en) 2012-08-08
KR20070096914A (en) 2007-10-02
TWI344106B (en) 2011-06-21

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