[특허]Auxiliary functionality for pixel data

Auxiliary functionality for pixel data 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H04L-029/06
출원번호	US-0411272 (2012-03-02)
등록번호	US-8738929 (2014-05-27)
발명자 / 주소	Evans, Glenn F. England, Paul
출원인 / 주소	Microsoft Corporation
대리인 / 주소	Boelitz, Carole
인용정보	피인용 횟수 : 0 인용 특허 : 49

초록 ▼

The various methods and systems described herein are directed to supplying a secure channel for software executing on a host computer. The methods and systems address and provide solutions for an attack model in which rogue software executing on the host computer attempts to inappropriately obtain or otherwise manipulate data. Some embodiments can provide pixel data that can be kept confidential (in that untrusted software applications cannot read the data off of the display screen). In addition, other embodiments can preserve the integrity of the pixel data by detecting whether the pixel data has been inappropriately manipulated. Various embodiments are based on a decryption engine that is located on a video card very late in the video processing chain such that programmatic access to decrypted pixel data is denied.

대표청구항 ▼

1. A computer-implemented method, comprising: processing pixel data by a computing device to reveal at least one auxiliary functionality specified by a value in unused auxiliary bits of the pixel data, the at least one auxiliary functionality identifying one or more of a process or an entity that has permission to access a portion of memory in which the pixel data is stored;identifying the at least one auxiliary functionality based on the processed pixel data by correlating the value in the auxiliary bits to the corresponding auxiliary functionality of a plurality of auxiliary functionalities; andcausing the at least one auxiliary functionality to be implemented by restricting access to the pixel data to one or more of the process or the entity. 2. A computer-implemented method as described in claim 1, wherein the auxiliary functionality is revealed from auxiliary data included as part of the pixel data. 3. A computer-implemented method as described in claim 1, wherein the at least one auxiliary functionality is configured to be applied individually to one or more pixels of the pixel data. 4. A computer-implemented method as described in claim 1, wherein the at least one auxiliary functionality is specified in an alpha channel of the pixel data. 5. A computer-implemented method as described in claim 1, wherein the unused auxiliary bits specify at least one other auxiliary functionality that specifies, for the pixel data, one or more of alpha or transparency information, color depth information, video card memory region identification information, or color key information that identifies a region of video card memory data to be substituted with other data. 6. A computer-implemented method as described in claim 1, wherein said processing comprises: accessing a table that associates bit values with the auxiliary functionalities; andusing bit values included in auxiliary bits of the pixel data as an index into the table to reveal the at least one auxiliary functionality from the auxiliary functionalities. 7. A computer-implemented method as described in claim 6, wherein the table includes a pointer to executable code that is executable to implement the at least one auxiliary functionality. 8. A computer-implemented method as described in claim 1, wherein the unused auxiliary bits specify at least one other auxiliary functionality that specifies a decryption key associated with encrypted pixel data included as part of the pixel data, and wherein said causing comprises accessing the decryption key and decrypting the encrypted pixel data using the decryption key. 9. A computer-implemented method as described in claim 8, wherein the decryption key is included as part of a table that matches bit values to decryption keys, and wherein said accessing comprises matching bit values included as part of the at least one other auxiliary functionality to bit values indicated in the table to identify the decryption key. 10. A computer-implemented method as described in claim 1, wherein the auxiliary bits are revealed as part of an unused channel of the pixel data. 11. A computer-implemented method, comprising: ascertaining that pixel data includes unused auxiliary bits; andspecifying by a computing device one or more auxiliary functions using the unused auxiliary bits by applying at least one value to the unused auxiliary bits such that the one or more auxiliary functions are identifiable from the unused auxiliary bits based on the at least one value, the one or more auxiliary functions identifying one or more of a process or an entity that has permission to access a portion of memory in which the pixel data is stored such that access to the pixel data is restricted to one or more of the process or the entity. 12. A computer-implemented method as described in claim 11, wherein the auxiliary bits are included as part of an unused channel of the pixel data. 13. A computer-implemented method as described in claim 11, wherein the one or more auxiliary functions are configured to be applied individually to one or more pixels of a subset of the pixel data. 14. A computer-implemented method as described in claim 11, wherein the one or more auxiliary functions further specify at least one of color depth information, video card memory region identification information, or color key information that identifies a region of video card memory data to be substituted with other data. 15. A computer-implemented method as described in claim 11, wherein said specifying comprises associating data values of the auxiliary bits with the one or more auxiliary functions in a table that associates different data values with different auxiliary functions. 16. A computer-implemented method as described in claim 11, wherein the pixel data includes encrypted pixel data, and wherein the one or more auxiliary functions comprise data configured to be utilized to locate a decryption key for decrypting the encrypted pixel data. 17. A computer-implemented method, comprising: associating auxiliary data with unused bits of encrypted pixel data by a computing device, the pixel data comprising color data;using a first portion of the auxiliary data to specify alpha channel value information of the encrypted pixel data; andusing a second portion of the auxiliary data to specify one or more auxiliary functions identifying one or more of a process or an entity that has permission to access a portion of memory in which the encrypted pixel data is stored such that access to the encrypted pixel data is restricted to one or more of the process or the entity. 18. A computer-implemented method as described in claim 17, further comprising: decrypting the encrypted pixel data using a decryption key to generate decrypted pixel data;generating a hash of the decrypted pixel data;using at least a portion of the auxiliary data to identify a stored hash of pixel data that was encrypted to generate the encrypted pixel data; andcomparing the hash of the decrypted pixel data with the stored hash to determine whether the encrypted pixel data is compromised. 19. A computer-implemented method as described in claim 17, wherein the second portion of the auxiliary data further specifies information that enables a decryption key to be accessed such that the encrypted pixel data can be decrypted using the decryption key. 20. A computer-implemented method as described in claim 17, wherein the one or more auxiliary functions are specified by associating data values of the auxiliary data with the one or more auxiliary functions in a table that associates different data values with different auxiliary functions.

이 특허에 인용된 특허 (49)

Cromer Daryl Carvis ; Desai Dhruv Manmohandas ; Locker Howard Jeffrey ; Ward James Peter, Access limiting to only a planar by storing a device public key only within the planar and a planar public key only within the device.
상세보기
Satake,Syuichi, Apparatus and method for authenticating digital signatures and computer-readable recording medium thereof.
상세보기
Makoto Saito JP, Apparatus for data copyright management system.
상세보기
Matyas Stephen M. (Kingston NY) Oseas Jonathan (Hurley NY), Code protection using cryptography.
상세보기
Orton Glenn A. (158 Kent Street Hamilton ; Ont. CAX L8P 3Z3), Cryptographic method for communication and electronic signatures.
상세보기
Kim Yong-Duk,KRX, Data encryption system for encrypting plaintext data.
상세보기
Krueger Steven D. (Houston TX) Branstad Martha A. (Gaithersburg MD) Walker Stephen T. (Glenwood MD), Data protection for computer systems.
상세보기
Bewick Simon,GBX, Digital video broadcasting.
상세보기
Chen,Liqun; Balacheff,Boris; du Toit,Roelf; Pearson,Siani Lynne; Chan,David, Electronic commerce system.
상세보기
Virga, Richard, Encryption device.
상세보기
Bhaskaran Vasudev ; Ratnakar Viresh, Fragile watermarks for detecting tampering in images.
상세보기
Salahshour Abdolreza (Keller TX) Williams Marvin L. (Lewisville TX), Graphical manipulation of encryption.
상세보기
Nozue Hiroshi (Tokyo JPX) Saito Mitsuo (Tokyo JPX) Maeda Kenichi (Tokyo JPX) Asano Shigehiro (Tokyo JPX) Okamoto Toshio (Tokyo JPX) Sungho Shin (Tokyo JPX) Segawa Hideo (Tokyo JPX), Memory management and protection system for virtual memory in computer system.
상세보기
Mast Michael B., Method and apparatus for copy protection of images in a computer system.
상세보기
Porter,Allen J. C.; Wang,Chun; Kechichian,Kevork; Varga,Gabriel; Strasser,David, Method and apparatus for maintaining secure and nonsecure data in a shared memory system.
상세보기
Mical Robert J. (Redwood City CA) Needle David L. (Alameda CA), Method and apparatus for processing image data.
상세보기
Strasser, David A.; Pang, Edwin; Varga, Gabriel Z., Method and apparatus for providing bus-encrypted copy protection key to an unsecured bus.
상세보기
Daly Scott J. ; Squilla John R. ; Denber Michel ; Honsinger Chris W. ; Hamilton John, Method for embedding digital information in an image.
상세보기
Cheng Wang J. (Martinsville NJ) Cheng Lee-Tin (East Brunswick NJ) Cochinwala Munir (Basking Ridge NJ) Lee Kuo-Chu (Princeton Junction NJ) Liu Cheng-Chung (Warren NJ) Wise Thomas L. (Piscataway NJ), Method for forwarding a call to a temporarily utilized portable telephone.
상세보기
Pizano, Carlos E.; Heileman, Gregory L., Method for securing video images.
상세보기
Evans,Glenn F.; England,Paul, Methods and systems for maintaining an encrypted video memory subsystem.
상세보기
Evans,Glenn F.; England,Paul; Wilt,Nicholas P., Methods and systems for maintaining an encrypted video memory subsystem.
상세보기
Gecht, Guy; Lodwick, Philip A.; Schoenzeit, Loren; Steinberg, John D.; Tenenbaum, Ofer, Methods and systems for the provision of remote printing services over a network.
상세보기
Evans,Glenn F.; England,Paul, Methods and systems providing per pixel security and functionality.
상세보기
Warren Robert L. ; Lee Chong U. ; Moallemi Kamran, Multi-media copy management system.
상세보기
Duck Gary S.,CAXITX K2J 3Z7 ; Teitelbaum Neil,CAXITX K1S 5C4 ; Cheng Yihao,CAXITX K2M 2L6 ; Delisle Vincent,CAXITX K2C 3L5, Multi-port fiber optical device.
상세보기
Depew John M., PC processing card for decoding operations.
상세보기
Foehr,Oliver H.; McGatha,Jesse D.; Bourgoin,Michael A., Palette-based, multi-tint, named color methods and systems.
상세보기
Brooks,Roger K.; Ma,Yanda; Singhal,Dave M.; Hong,Xia, Personal broadcasting system for audio and video data using a wide area network.
상세보기
Squilla John R. ; Moghadam Omid A. ; Rabbani Majid, Photograhic system with selected area image authentication.
상세보기
William D. Bilodeau ; Paul George ; David R. Lazarony, Jr., Rendering of objects on graphical rendering devices as clipped images.
상세보기
Anderson Mark Stephen,AUX, Secure computer architecture.
상세보기
Evans,Glenn F., Secure video card methods and systems.
상세보기
Evans,Glenn F., Secure video card methods and systems.
상세보기
Evans,Glenn F., Secure video card methods and systems.
상세보기
Evans,Glenn F., Secure video card methods and systems.
상세보기
Evans,Glenn F., Secure video card methods and systems.
상세보기
Evans,Glenn F., Secure video card methods and systems.
상세보기
Evans,Glenn F., Secure video card methods and systems.
상세보기
Hirota, Teruto; Tagawa, Kenji; Matsushima, Hideki; Ishikawa, Tomokazu; Inoue, Shinji; Kozuka, Masayuki, Semiconductor memory card, playback apparatus, recording apparatus, playback method, recording method, and computer-readable recording medium.
상세보기
Larsson Stig B. (Mosman AUX) Hoffmann Christoph T. (Nelson AUX) Dimond Phillip C. (Merrylands AUX), Smart card validation device and method.
상세보기
Dan Asit ; Ramaswami Rajiv ; Sitaram Dinkar, Support for portable trusted software.
상세보기
Davis Derek L., System and method for copy-protecting distributed video content.
상세보기
Davis Derek L., System and method for copy-protecting distributed video content.
상세보기
Spies Terence R. ; Simon Daniel R., System and method for secure purchase and delivery of video content programs.
상세보기
Michael Man-Hak Tso ; Thomas G. Willis ; John W. Richardson ; Robert Conrad Knauerhase ; Damien Macielinski, System for dynamically transcoding data transmitted between computers.
상세보기
Evans, Glenn F.; England, Paul, Systems and methods for securing video card output.
상세보기
Rom？n,Kendyl A., Variable general purpose compression for video images (ZLN).
상세보기
Ritter Terry F., Variable size block ciphers.
상세보기

IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

내보내기 구분	파일저장 인쇄 메일전송
구성항목	기본정보 상세정보 관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표IPC 관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 공고번호, 공고일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표출원인, 출원인국적, 출원인주소, 발명자, 발명자E, 발명자코드, 발명자주소, 발명자 우편번호, 발명자국적, 대표IPC, IPC코드, 요약, 미국특허분류, 대리인주소, 대리인코드, 대리인(한글), 대리인(영문), 국제공개일자, 국제공개번호, 국제출원일자, 국제출원번호, 우선권, 우선권주장일, 우선권국가, 우선권출원번호, 원출원일자, 원출원번호, 지정국, Citing Patents, Cited Patents
저장형식	Text(ASCII format) Excel format PIAS분석(.xls)
메일정보	받는사람 (필수) @ 보내는사람 (선택) @ 제목 내용 KISTI 검색결과 이메일 서비스
안내	총 건의 자료가 검색되었습니다. 다운받으실 자료의 인덱스를 입력하세요. (1-10,000) 검색결과의 순서대로 최대 10,000건 까지 다운로드가 가능합니다. 데이타가 많을 경우 속도가 느려질 수 있습니다.(최대 2~3분 소요) 다운로드 파일은 UTF-8 형태로 저장됩니다. 파일의 내용이 제대로 보이지 않을실 때는 웹브라우저 상단의 보기 -> 인코딩 -> 자동선택 여부를 확인하십시오. ~ Text(ASCII format) Excel format

연합인증

Auxiliary functionality for pixel data 원문보기

초록 ▼

대표청구항 ▼

연구과제 타임라인

이 특허에 인용된 특허 (49)

관련 콘텐츠

특허 원문 보기

IPC 상위 출원인

AI-Helper ※ AI-Helper는 오픈소스 모델을 사용합니다.

선택된 텍스트

연합인증

Auxiliary functionality for pixel data 원문보기

초록 ▼

대표청구항 ▼

연구과제 타임라인

전체(0) 논문(0) 특허(0) 보고서(0)

전체(0) 논문(0) 특허(0) 보고서(0)

이 특허에 인용된 특허 (49)

관련 콘텐츠

특허 원문 보기

IPC 상위 출원인

AI-Helper ※ AI-Helper는 오픈소스 모델을 사용합니다.

선택된 텍스트