[특허]Rights management system for streamed multimedia content

Rights management system for streamed multimedia content 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G06Q-099/00 G06F-021/10 G06Q-020/12 G06F-021/00
출원번호	US-0113216 (2005-04-22)
등록번호	US-9507919 (2016-11-29)
발명자 / 주소	Van Dyke, Clifford P. Cheng, David J. Mohan, Siva
출원인 / 주소	Microsoft Technology Licensing, LLC
대리인 / 주소	Lee, Sunah
인용정보	피인용 횟수 : 0 인용 특허 : 59

초록 ▼

To communicate requirements for a digital license from a receiver of corresponding digital content to a computing device upon which the digital content is to be rendered, the receiver tunes the content and locates within the content information relating to the requirements for the license, constructs the requirements from the located information, and sends such constructed requirements to the computing device. The computing device upon receiving the sent requirements constructs the license based on such received requirements, stores such constructed license in a license store of such computing device, and thereafter renders the content only in accordance with the license. Thus, the receiver need not communicate the license itself to the computing device.

대표청구항 ▼

1. A method for communicating rules and requirements for a digital license of corresponding digital content from a receiver including a tuner to a computing device programmed to render the digital content, the rules and requirements specifying whether a user of the corresponding digital content has rights to render the corresponding digital content based on any of several factors, the method comprising: the receiver receiving, from a distributor, a combined signal comprising multiple streams of digital content wherein each of the multiple streams includes digital content and information including a shortened version of rules and requirements for a digital license governing use of the digital content in the respective stream;the receiver tuning the corresponding digital content from the combined signal;the receiver locating within each stream the information including the shortened version of the rules and requirements for the digital license governing the use of the corresponding digital content;the receiver constructing the rules and requirements from the located information and sending such constructed requirements to the computing device; andthe computing device receiving the constructed requirements, constructing the digital license based on such received rules and requirements, storing such constructed digital license in a license store of such computing device, and thereafter rendering the corresponding digital content only in accordance with the digital license. 2. The method of claim 1 further comprising: the receiver receiving the corresponding digital content form from a content distributor, wherein the digital content includes a decryption key (KD) that is encrypted using a public key of the receiver (PU-C);the receiver decrypting the corresponding digital content using a private key (PR-C) by which PU-C(KD) may be decrypted; andthe receiver re-encrypting the decrypted corresponding digital content (CONTENT) using the decryption key (KD) obtained in the decrypting step. 3. The method of claim 1 wherein the information including the shortened version of the rules and requirements for the digital license of corresponding digital content of each stream is supplied within each stream at periodic time intervals. 4. The method of claim 1 wherein the receiver constructs each of one or more rules and requirements for the digital license from the located information according to a same format expected by the computing device. 5. The method of claim 4 wherein the receiver constructs the rules and requirements from the located information according to a format comprising a multi-bit representation divided into a number of pre-defined fields including: an input copy protection method field specifying a value that corresponds in a predetermined manner to a particular content protection method employed on the content;a copy control value field representing how the content may be sub-licensed from the computing device to another computing device; andone or more copy protection method-specific fields containing information unique to one or more specific copy protection methods. 6. The method of claim 1 wherein the receiver constructs the rules and requirements from the located information to include whether the computing device can issue a sub-license to another computing device to render the corresponding digital content thereon, and if so how many times the computing device can issue such a sub-license. 7. The method of claim 1 wherein the receiver sends the constructed rules and requirements to a trusted component of the computing device. 8. The method of claim 1 wherein the computing device constructs the digital license based on the received rules and requirements by mapping each field of the rules and requirements to the digital license according to pre-defined mapping rules. 9. A computer-readable storage medium including hardware having stored thereon computer-executable instructions that when processed by a processor implement a method for communicating rules and requirements for a digital license of corresponding digital content from a receiver to a computing device that renders the digital content in accordance with constructed rules and requirements for the digital license received from the receiver, the rules and requirements specifying whether a user of the corresponding digital content has rights to render the corresponding digital content based on any of several factors, the method comprising: the receiver receiving, from a distributor, a combined signal comprising multiple streams of digital content wherein each of the multiple streams includes digital content and information including a shortened version of rules and requirements for a digital license governing use of the digital content in the respective stream;the receiver tuning the corresponding digital content from the combined signal;the receiver locating within each stream the information including the shortened version of the rules and requirements for the digital license governing use of the corresponding digital content; andthe receiver constructing the rules and requirements from the located information and sending such constructed requirements to the computing device. 10. The medium of claim 9 wherein the method further comprises: the receiver receiving the corresponding digital content from a content distributor, wherein the digital content includes a decryption key (KD) that is encrypted using a public key of the receiver (PU-C);the receiver decrypting the corresponding digital content using a private key (PR-C) by which PU-C(KD) may be decrypted; andthe receiver re-encrypting the decrypted corresponding digital content (CONTENT) using the decryption key (KD) obtained in the decrypting step. 11. The medium of claim 9 wherein the information including the shortened version of the rules and requirements for the digital license of corresponding digital content of each stream is supplied within each stream at periodic time intervals and the step of locating within each stream information including the shortened version of relating to the rules and requirements for the digital license comprises checking said stream at said periodic time intervals. 12. The medium of claim 9 wherein the constructing step comprises the receiver constructing each of one or more rules and requirements for the digital license from the located information according to a same format expected by the computing device. 13. The medium of claim 12 wherein the constructing step comprises the receiver constructing the rules and requirements from the located information according to a format comprising a multi-bit representation divided into a number of pre-defined fields including: an input copy protection method field specifying a value that corresponds in a predetermined manner to a particular content protection method employed on the content;a copy control value field representing how the content may be sub-licensed from the computing device to another computing device; andone or more copy protection method-specific fields containing information unique to one or more specific copy protection methods. 14. The medium of claim 9 wherein the constructing step comprises the receiver constructing the rules and requirements from the located information to include whether the computing device can issue a sub-license to another computing device to render the corresponding digital content thereon, and if so how many times the computing device can issue such a sub-license. 15. The medium of claim 9 wherein sending the constructed rules and requirements to the computing device comprises the receiver sending the constructed requirements to a trusted component of the computing device. 16. A system comprising: a computing device including a display device that is programmed to render digital content in accordance with a corresponding digital license, wherein the digital content is extracted from a combined signal comprising a plurality of streams of digital content wherein each stream includes digital content and corresponding information including a shortened version of rules and requirements for a digital license governing use of the digital content in the respective stream; anda receiver including a processor that executes computer-executable instructions to implement a method for:receiving, from a distributor, the combined signal;tuning the corresponding digital content from the combined signal;locating within each stream the information including the shortened version of the rules and requirements for the digital license governing the use of the corresponding digital content;constructing the rules and requirements from the located information; andsending such constructed rules and requirements to the computing device,wherein the computing device constructs the digital license based on the constructed rules and requirements received from the receiver, stores the constructed digital license in a license store, and thereafter renders the digital content on the display device only in accordance with the digital license. 17. The system of claim 16 wherein the receiver receives the digital content from a content distributor in an encrypted form, wherein the digital content includes a decryption key (KD) that is encrypted using a public key of the receiver (PU-C), decrypts the digital content using a private key (PR-C) by which PU-C(KD) may be decrypted, and re-encrypts the decrypted digital content (CONTENT) using the decryption key (KD) obtained by decrypting the digital content. 18. The system of claim 16 wherein the information including the shortened version of the requirements for the digital license of corresponding digital content of each stream is supplied within each stream at periodic time intervals. 19. The system of claim 16 wherein the receiver constructs each of one or more requirements corresponding to each of the plurality of streams of digital content from the located information according to a same format expected by the computing device. 20. The system of claim 16 wherein the receiver sends the constructed requirements to a trusted component of the computing device. 21. The system of claim 16 wherein the computing device constructs the digital license based on the received requirements by mapping each field of the requirements to the digital license according to pre-defined mapping rules.

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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

Rights management system for streamed multimedia content 원문보기

초록 ▼

대표청구항 ▼

연구과제 타임라인

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연합인증

Rights management system for streamed multimedia content 원문보기

초록 ▼

대표청구항 ▼

연구과제 타임라인

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