[특허]Method and system for synchronization of content rendering

[미국특허] Method and system for synchronization of content rendering 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H04J-003/06
출원번호	US-0322335 (2002-12-17)
등록번호	US-7391791 (2008-06-24)
발명자 / 주소	Balassanian,Edward Bradley,Scott W.
출원인 / 주소	Implicit Networks, Inc.
대리인 / 주소	Black Lowe & Graham PLLC
인용정보	피인용 횟수 : 174 인용 특허 : 13

초록 ▼

A method and system for synchronizing the rendering of content at various rendering devices. Each rendering device has a device time and a rendering time. The synchronization system designates one of the rendering devices as a master rendering device and designates all other rendering devices as slave rendering devices. Each slave rendering device adjusts the rendering of its content to keep it in synchronization with the rendering of the content at the master rendering device. The master rendering device sends a message with its rendering time and corresponding device time to the slave rendering devices. Each slave rendering device, upon receiving the message from the master rendering device, determines whether it is synchronized with the master rendering time. If not, the slave rendering device adjusts the rendering of its content to compensate for the difference between the master rendering time and the slave rendering time.

대표청구항 ▼

We claim: 1. A method for synchronizing a rendering of a content provided by a source at one or more devices which are nodes of a network, the content having a rendering time, the method comprising: designating one of the one or more devices a master device, the master device having a master device time and a master rendering time; designating remaining devices among one of the one or more devices as at least one slave device, the at least one slave device having a slave device time and a slave rendering time; receiving the content for rendering by the master and at least one slave device; sending from the master device to the at least one slave device an indication of when the master device renders content corresponding to the master rendering time; determining a master device time domain, a slave device time domain, and a source time domain; determining whether a time domain differential exists between the master rendering time, the slave rendering time; and adjusting, based on the received indication, the rendering of the content at the at least one slave device within the slave device time domain and in proportion to the time domain differential when present to account for variation between when the master device and the at least one slave device to render content that should be rendered at the same time. 2. The method of claim 1 wherein the indication sent from the master device to the at least one slave device includes the master device time at which the master device renders content corresponding to the master rendering time. 3. The method of claim 2 wherein the indication sent from the master device to the at least one slave device includes the master rendering time. 4. The method of claim 2 wherein the master rendering time is a default rendering time. 5. The method of claim 2 wherein the master rendering time is time zero. 6. The method of claim 1 wherein the determining the time domains of the master device, the slave device, and the source includes determining the time domains relative to an other device by sending the send and receive times of at least one of the master device, the slave device, and the source to the other device. 7. The method of claim 6 wherein determining the time domain differential includes: calculating a first difference between the master receive and master send times; calculating a second difference between the slave receive and the slave send times; adding the first and second differences to yield a difference sum; and halving the difference sum. 8. The method of claim 7 wherein adjusting the rendering of the content includes: conforming the slave rendering time to the master device rendering time so that the master device time and the at least one slave device operate in the same time domain; and deducting or adding the time domain differential to the same time domain. 9. The method of claim 1 wherein the sending of the indication from the master device to the slave devices occurs at various times so that the at least one slave device can adjust the rendering of the content as appropriate. 10. The method of claim 1 wherein the adjusting accounts for variations in the time domain of the master device and the at least one slave device. 11. The method of claim 1 wherein the content is sent from a single source to the master device and the at least one slave device. 12. The method of claim 1 wherein the content is sent from different sources to the master device and the at least one slave device. 13. The method of claim 12 including receiving a rendering time adjustment that indicates a difference in the master rendering time and the slave rendering time of content that is to be synchronized. 14. The method of claim 13 wherein a user specifies the rendering time adjustment. 15. The method of claim 14 wherein the user specifies the rendering time adjustment by indicating the amount of time the master device and the slave device are out of synchronization. 16. A method for synchronizing rendering of content at devices which are nodes of network, each device having a device time and a rendering time, the device time of a device being in a time domain of the device, the method comprising: designating one of the devices as a master device having a master rendering time and the one or more slave devices having a slave rendering time; sending to each device content to be rendered at that device synchronized with the content sent to the other devices; sending from the master device to the one or more slave devices a master device time corresponding to the master rendering time of the master device; and upon receiving the sent master device time at the one or more slave devices, exchanging time domain information between the master and one or more slave devices; determining at least one time domain differential between the master rendering time and the slave rendering time between the master device and the one or more slave devices; adjusting the rendering of the content at the one or more slave devices to account for a difference in the slave rendering time and the master rendering time calculated based on the master device time adjusted for a difference in time domains of the one or more slave devices and the master device. 17. The method of claim 16 wherein the at least one time domain differential between the slave rendering time and the master rendering time is calculated by: converting the master device time to a time frame of the slave device; calculating a master start time for the master device from the converted master device time and the master rendering time; calculating a slave start time for the slave device from the slave device time and the slave rendering time; and calculating the difference between the slave start time and the master start time. 18. The method of claim 16 wherein sending from the master device to the one or more slave devices includes the master device time and the master rendering time to occur at various times so that the one or more slave devices can adjust the rendering of the content as appropriate. 19. The method of claim 16 wherein the content is sent from different sources to the master device and the slave devices. 20. The method of claim 19 including receiving a rendering time adjustment that indicates the difference in a master rendering time and the slave rendering time of content that is to be synchronized. 21. The method of claim 20 wherein a user specifies the rendering time adjustment. 22. The method of claim 21 wherein the user specifies the rendering time adjustment by indicating the amount of time the master device and the slave device are out of synchronization. 23. A method for synchronizing rendering of content at devices which are nodes of a network, each device having a device time and a rendering time, the device time of a device being in a time domain of the device, the method comprising: designating one of the devices as a master device having a master rendering time and the one or more slave devices having a slave rendering time; and for each slave device, exchanging time domain information between the master and one or more slave devices; calculating a time domain difference between the master rendering time of the master device and the slave rendering time of the slave device based on a master device time adjusted for a difference in time domains of the slave device and the master device; and rendering content at the slave device to account for the calculated time domain difference. 24. The method of claim 23 including sending a master device time and the master rendering time to each slave device for use in calculating the time domain difference. 25. The method of claim 24 wherein the master device sends the master device time and the master rendering time to the slave devices. 26. The method of claim 24 wherein each slave device converts the master device time to its time domain. 27. The method of claim 24 wherein the master device converts the master device time to the time domain of a slave device before sending it.

이 특허에 인용된 특허 (13) 인용/피인용 타임라인 분석

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Danneels Gunner (Beaverton OR), System for synchronizing data stream transferred from server to client by initializing clock when first packet is receiv.
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Sheen, Timothy, Spectral correction using spatial calibration.
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Millington, Nicholas A. J., Switching between a directly connected and a networked audio source.
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Keyser-Allen, Lee; Higdon, Thomas; Vega-Zayas, Luis; Lin, Ted; Sarkic, Andrej, Synchronization of content between networked devices.
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Lin, Ted M.; Vega, Luis, Synchronized audio mixing.
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Stanton, Kevin; Hady, Frank, Synchronizing multiple system clocks.
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Millington, Nicholas A. J.; Ericson, Michael, Synchronizing operations among a plurality of independently clocked digital data processing devices.
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Bradley, Bob; Newberry, Jr., Robert Dale, System and method for synchronizing media presentation at multiple recipients.
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Bradley, Bob; Newberry, Jr., Robert Dale, System and method for synchronizing media presentation at multiple recipients.
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Bradley, Bob; Newberry, Jr., Robert Dale, System and method for synchronizing media presentation at multiple recipients.
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Mayman, Avrum G.; Yewell, Scott Talbot; Zamir, Lee; Drimusz, Laszlo Otto, System with speaker, transceiver and related devices.
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Kusano, Mieko, Systems and methods for mobile music zones.
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Coburn, IV, Arthur; Hoadley, Joni Rafalski, Systems and methods for networked music playback.
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Millington, Nicholas A. J., Systems and methods for synchronizing operations among a plurality of independently clocked digital data processing devices that independently source digital data.
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Van Erven, Niels; Ericson, Michael Darrell Andrew; Beckhardt, Steve; Millington, Nicholas A. J., Systems, methods, apparatus, and articles of manufacture to provide automatic wireless configuration.
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Bates, Paul; Keyser-Allen, Lee; Lang, Jonathan P.; Roberts, Diane; Millington, Nicholas A. J., Systems, methods, apparatus, and articles of manufacture to provide guest access.
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Buoni, Matthew; Kadri, Romi; Oishi, Tetsuro, Three-dimensional beam forming with a microphone array.
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Little, Richard Warren, Transducer diaphragm.
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Little, Richard Warren, Transducer diaphragm.
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Jarvis, Simon; Hartung, Klaus; Davies, Chris; Sheen, Tim, Updating playback device configuration information based on calibration data.
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Lambourne, Robert A., Updating zone configuration in a multi-zone media system.
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Downing, Jonathan; Sheen, Timothy; Valente, Daniel, Validation of audio calibration using multi-dimensional motion check.
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Reilly, Jonathon; Burlingame, Gregory; Butts, Christopher; Kadri, Romi; Lang, Jonathan P., Voice detection by multiple devices.
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Elliot, Michael; Banerjee, Debasmit, Wireless audio synchronization.
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Lambourne, Robert A., Zone configuration based on playback selections.
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Lambourne, Robert A., Zone configurations maintained by playback device.
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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

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[미국특허] Method and system for synchronization of content rendering 원문보기

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[미국특허] Method and system for synchronization of content rendering 원문보기

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