AU2002211253A1 - Method and apparatus to improve the protection of information presented by a computer - Google Patents

Method and apparatus to improve the protection of information presented by a computer

Info

Publication number
AU2002211253A1
AU2002211253A1 AU2002211253A AU1125302A AU2002211253A1 AU 2002211253 A1 AU2002211253 A1 AU 2002211253A1 AU 2002211253 A AU2002211253 A AU 2002211253A AU 1125302 A AU1125302 A AU 1125302A AU 2002211253 A1 AU2002211253 A1 AU 2002211253A1
Authority
AU
Australia
Prior art keywords
frame buffer
prevent
controller
read
area
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.)
Abandoned
Application number
AU2002211253A
Inventor
Luke Girard
Daniel Lenehan
Steven Preston
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.)
Intel Corp
Original Assignee
Intel Corp
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 Intel Corp filed Critical Intel Corp
Publication of AU2002211253A1 publication Critical patent/AU2002211253A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/70—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
    • G06F21/82—Protecting input, output or interconnection devices
    • G06F21/84—Protecting input, output or interconnection devices output devices, e.g. displays or monitors
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/70—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
    • G06F21/78—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure storage of data
    • G06F21/79—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure storage of data in semiconductor storage media, e.g. directly-addressable memories
    • 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
    • G09G5/39—Control of the bit-mapped memory

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Software Systems (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Storage Device Security (AREA)
  • Communication Control (AREA)
  • Financial Or Insurance-Related Operations Such As Payment And Settlement (AREA)

Abstract

An improvement to a graphics controller to prevent the contents of selected portions of the frame buffer from being read by devices external to the graphics controller. The invention defines one or more viewable rectangles in the frame buffer as a protected write-only area. Any attempt to read data from the protected area of the frame buffer triggers a security violation which can delete or destroy the contents of that area to prevent it from being read. The controller can also operate in a bypass mode in which the security functions are bypassed so the graphics controller operates in a conventional manner. A security violation may return the controller to the bypass mode. The invention can prevent protected data, such as copyrighted data downloaded over the Internet, from being copied from the frame buffer and used in an unauthorized manner.
AU2002211253A 2000-09-20 2001-09-20 Method and apparatus to improve the protection of information presented by a computer Abandoned AU2002211253A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/665,826 US7007304B1 (en) 2000-09-20 2000-09-20 Method and apparatus to improve the protection of information presented by a computer
US09/665,826 2000-09-20
PCT/US2001/029692 WO2002025416A2 (en) 2000-09-20 2001-09-20 Method and apparatus to improve the protection of information presented by a computer

Publications (1)

Publication Number Publication Date
AU2002211253A1 true AU2002211253A1 (en) 2002-04-02

Family

ID=24671710

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2002211253A Abandoned AU2002211253A1 (en) 2000-09-20 2001-09-20 Method and apparatus to improve the protection of information presented by a computer

Country Status (9)

Country Link
US (1) US7007304B1 (en)
EP (1) EP1350149B1 (en)
CN (1) CN100430859C (en)
AT (1) ATE507536T1 (en)
AU (1) AU2002211253A1 (en)
BR (1) BR0114014A (en)
DE (1) DE60144534D1 (en)
TW (1) TW576961B (en)
WO (1) WO2002025416A2 (en)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7007304B1 (en) * 2000-09-20 2006-02-28 Intel Corporation Method and apparatus to improve the protection of information presented by a computer
US7055038B2 (en) * 2001-05-07 2006-05-30 Ati International Srl Method and apparatus for maintaining secure and nonsecure data in a shared memory system
US7073070B2 (en) 2001-06-29 2006-07-04 Intel Corporation Method and apparatus to improve the protection of information presented by a computer
US7380130B2 (en) 2001-12-04 2008-05-27 Microsoft Corporation Methods and systems for authentication of components in a graphics system
US7065651B2 (en) 2002-01-16 2006-06-20 Microsoft Corporation Secure video card methods and systems
CA2481226C (en) * 2002-03-28 2011-11-15 Oleksiy Yuryevich Shevchenko Method and device for computer memory protection against unauthorized access
US8155314B2 (en) 2002-06-24 2012-04-10 Microsoft Corporation Systems and methods for securing video card output
US7206940B2 (en) 2002-06-24 2007-04-17 Microsoft Corporation Methods and systems providing per pixel security and functionality
US7474312B1 (en) * 2002-11-25 2009-01-06 Nvidia Corporation Memory redirect primitive for a secure graphics processing unit
US7293178B2 (en) 2002-12-09 2007-11-06 Microsoft Corporation Methods and systems for maintaining an encrypted video memory subsystem
EP1548601A1 (en) * 2003-12-23 2005-06-29 Stmicroelectronics SA Memory access control in an electronic apparatus
CN100357864C (en) * 2005-01-31 2007-12-26 深圳市证通电子股份有限公司 Keyboard encrypting method
US7941860B2 (en) * 2005-05-13 2011-05-10 Intel Corporation Apparatus and method for content protection using one-way buffers
CN101090397B (en) * 2006-06-13 2010-12-15 国际商业机器公司 Method, device and computer system for performing transactions between a client and a server
US8564598B2 (en) 2007-08-15 2013-10-22 Nvidia Corporation Parallelogram unified primitive description for rasterization
US20090172331A1 (en) * 2007-12-31 2009-07-02 Balaji Vembu Securing content for playback
US8504839B2 (en) * 2008-10-27 2013-08-06 Advanced Micro Devices, Inc. Method, apparatus, and device for protecting against programming attacks and/or data corruption
GB2484717B (en) * 2010-10-21 2018-06-13 Advanced Risc Mach Ltd Security provision for a subject image displayed in a non-secure domain
US10511578B2 (en) * 2016-03-04 2019-12-17 Intel Corporation Technologies for secure content display with panel self-refresh
KR102334988B1 (en) * 2017-09-08 2021-12-06 엘지디스플레이 주식회사 Organic light emitting diode display and operation method thereof
JP2019133345A (en) * 2018-01-30 2019-08-08 東芝メモリ株式会社 Data accumulating device, data processing system and data processing method
CN111312157B (en) * 2020-03-04 2021-05-25 深圳市艾比森光电股份有限公司 LED display screen, configuration updating method thereof, receiving card and display module

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4862156A (en) * 1984-05-21 1989-08-29 Atari Corporation Video computer system including multiple graphics controllers and associated method
JPH01110295A (en) 1987-10-23 1989-04-26 Hitachi Ltd Water pressure control unit detector
JP3305737B2 (en) * 1991-11-27 2002-07-24 富士通株式会社 Confidential information management method for information processing equipment
US5881287A (en) 1994-08-12 1999-03-09 Mast; Michael B. Method and apparatus for copy protection of images in a computer system
JPH0922385A (en) * 1995-07-05 1997-01-21 Rohm Co Ltd Data security device and method
US5675321A (en) * 1995-11-29 1997-10-07 Mcbride; Randall C. Personal computer security system
US6011473A (en) * 1998-01-13 2000-01-04 Micron Electronics, Inc. Method for generating an alarm in a portable computer system
IL124895A0 (en) * 1998-06-14 1999-01-26 Csafe Ltd Methods and apparatus for preventing reuse of text images and software transmitted via networks
US6298446B1 (en) * 1998-06-14 2001-10-02 Alchemedia Ltd. Method and system for copyright protection of digital images transmitted over networks
US6731756B1 (en) * 1999-06-21 2004-05-04 Elisar Software Corporation, Inc. Method for securing video images
US7007304B1 (en) * 2000-09-20 2006-02-28 Intel Corporation Method and apparatus to improve the protection of information presented by a computer
US7073070B2 (en) * 2001-06-29 2006-07-04 Intel Corporation Method and apparatus to improve the protection of information presented by a computer

Also Published As

Publication number Publication date
DE60144534D1 (en) 2011-06-09
US7007304B1 (en) 2006-02-28
BR0114014A (en) 2004-02-10
TW576961B (en) 2004-02-21
WO2002025416A3 (en) 2003-07-17
WO2002025416A2 (en) 2002-03-28
CN100430859C (en) 2008-11-05
EP1350149A2 (en) 2003-10-08
EP1350149B1 (en) 2011-04-27
CN1496503A (en) 2004-05-12
ATE507536T1 (en) 2011-05-15

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