Patents by Inventor Benyuan Zhang
Benyuan Zhang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11792469Abstract: A system may receive a plurality of requests to record a plurality of programs. Based on these requests, resources may be provisioned for transcoding variable bit rate streams into constant bit rate streams. Resources may be provisioned based on assigning transcoding tasks to an existing set of deployed devices in which the transcoding tasks correspond to the plurality of requests. Resources may further be provisioned based on incrementally deploying an additional device to the existing set of deployed devices when the transcoding capacity reaches a certain level.Type: GrantFiled: June 16, 2017Date of Patent: October 17, 2023Assignee: Comcast Cable Communications, LLCInventor: Benyuan Zhang
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Publication number: 20180098113Abstract: A system may receive a plurality of requests to record a plurality of programs. Based on these requests, resources may be provisioned for transcoding variable bit rate streams into constant bit rate streams. Resources may be provisioned based on assigning transcoding tasks to an existing set of deployed devices in which the transcoding tasks correspond to the plurality of requests. Resources may further be provisioned based on incrementally deploying an additional device to the existing set of deployed devices when the transcoding capacity reaches a certain level.Type: ApplicationFiled: June 16, 2017Publication date: April 5, 2018Inventor: Benyuan Zhang
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Patent number: 9793931Abstract: The invention relates to a wireless home gateway apparatus and methods of wirelessly delivering audio and/or video programs between a home gateway and a client and mitigating interference thereon. Specifically, the present invention relates to transmitting an audio/video program on two white space channels and alternately stopping transmission on one of said channels to search for external transmissions on the white space channel. The present invention permits the wireless home gateway to continuously transmit an audio/video program to a client while periodically searching for transmitters on each of the white space channels.Type: GrantFiled: January 15, 2010Date of Patent: October 17, 2017Assignee: THOMSON LicensingInventors: Paul Gothard Knutson, Wen Gao, Benyuan Zhang, Hou-Shin Chen
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Patent number: 9729914Abstract: A system may receive a plurality of requests to record a plurality of programs. Based on these requests, resources may be provisioned for transcoding variable bit rate streams into constant bit rate streams. Resources may be provisioned based on assigning transcoding tasks to an existing set of deployed devices in which the transcoding tasks correspond to the plurality of requests. Resources may further be provisioned based on incrementally deploying an additional device to the existing set of deployed devices when the transcoding capacity reaches a certain level.Type: GrantFiled: October 20, 2015Date of Patent: August 8, 2017Assignee: Comcast Cable Communications, LLCInventor: Benyuan Zhang
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Publication number: 20160219328Abstract: A system may receive a plurality of requests to record a plurality of programs. Based on these requests, resources may be provisioned for transcoding variable bit rate streams into constant bit rate streams. Resources may be provisioned based on assigning transcoding tasks to an existing set of deployed devices in which the transcoding tasks correspond to the plurality of requests. Resources may further be provisioned based on incrementally deploying an additional device to the existing set of deployed devices when the transcoding capacity reaches a certain level.Type: ApplicationFiled: October 20, 2015Publication date: July 28, 2016Inventor: Benyuan Zhang
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Patent number: 9392208Abstract: An implementation exits a power saving mode for fixed and periodic active periods of time to receive a separate burst transmission from a first stream during each of the corresponding active periods of time. The first stream is received at a first-stream burst data rate. The first stream includes data configured to be displayed at a first playback rate that is substantially less than the first-stream burst data rate. During the active periods of time, data is received from a second stream at a second-stream rate. The second stream includes data configured to be displayed at a second playback rate that is substantially the same as the second-stream rate. After receiving each of the burst transmissions from the first stream during the active periods of time, the power saving mode is entered for corresponding fixed and periodic power-saving periods of time while waiting for another burst from the first stream.Type: GrantFiled: November 13, 2013Date of Patent: July 12, 2016Assignee: Thomson LicensingInventors: Paul Gothard Knutson, Kumar Ramaswamy, Joshua Lawrence Koslov, Manoj Viswambharan, Benyuan Zhang, Wen Gao, Yik Chung Wu
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Patent number: 9197909Abstract: A system may receive a plurality of requests to record a plurality of programs. Based on these requests, resources may be provisioned for transcoding variable bit rate streams into constant bit rate streams. Resources may be provisioned based on assigning transcoding tasks to an existing set of deployed devices in which the transcoding tasks correspond to the plurality of requests. Resources may further be provisioned based on incrementally deploying an additional device to the existing set of deployed devices when the transcoding capacity reaches a certain level.Type: GrantFiled: March 14, 2013Date of Patent: November 24, 2015Assignee: Comcast Cable Communications, LLCInventor: Benyuan Zhang
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Publication number: 20150208028Abstract: The invention relates to a wireless home gateway apparatus and methods of wirelessly delivering audio and/or video programs between a home gateway and a client device and to interference mitigation techniques on such system. Specifically, the invention relates to transmitting an audio video program on a first channel, receiving a control signal from a remote control indicating interference on said first channel, changing the transmission channel to a second channel, and transmitting data indicating said second channel to said remote control.Type: ApplicationFiled: January 20, 2014Publication date: July 23, 2015Inventors: Paul Gothard KNUTSON, Wen GAO, Benyuan ZHANG, Hou-Shin CHEN
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Publication number: 20150065185Abstract: The invention relates to a wireless home gateway apparatus and methods of wirelessly delivering audio and/or video programs between a home gateway and a client and mitigating interference thereon. Specifically, the present invention relates to transmitting an audio/video program on two white space channels and alternately stopping transmission on one of said channels to search for external transmissions on the white space channel. The present invention permits the wireless home gateway to continuously transmit an audio/video program to a client while periodically searching for transmitters on each of the white space channels.Type: ApplicationFiled: January 15, 2010Publication date: March 5, 2015Inventors: Paul Gothard Knutson, Wen Gao, Benyuan Zhang, Hou-Shin Chen
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Publication number: 20140282789Abstract: A system may receive a plurality of requests to record a plurality of programs. Based on these requests, resources may be provisioned for transcoding variable bit rate streams into constant bit rate streams. Resources may be provisioned based on assigning transcoding tasks to an existing set of deployed devices in which the transcoding tasks correspond to the plurality of requests. Resources may further be provisioned based on incrementally deploying an additional device to the existing set of deployed devices when the transcoding capacity reaches a certain level.Type: ApplicationFiled: March 14, 2013Publication date: September 18, 2014Applicant: COMCAST CABLE COMMUNICATIONS, LLCInventor: Benyuan Zhang
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Publication number: 20140078396Abstract: An implementation exits a power saving mode for fixed and periodic active periods of time to receive a separate burst transmission from a first stream during each of the corresponding active periods of time. The first stream is received at a first-stream burst data rate. The first stream includes data configured to be displayed at a first playback rate that is substantially less than the first-stream burst data rate. During the active periods of time, data is received from a second stream at a second-stream rate. The second stream includes data configured to be displayed at a second playback rate that is substantially the same as the second-stream rate. After receiving each of the burst transmissions from the first stream during the active periods of time, the power saving mode is entered for corresponding fixed and periodic power-saving periods of time while waiting for another burst from the first stream.Type: ApplicationFiled: November 13, 2013Publication date: March 20, 2014Applicant: THOMSON LICENSINGInventors: Paul Gothard Knutson, Kumar Ramaswamy, Joshua Lawrence Koslov, Manoj Viswambharan, Benyuan Zhang, Wen Gao, Yik Chung Wu
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Patent number: 8611431Abstract: An implementation exits a power saving mode for fixed and periodic active periods of time to receive a separate burst transmission from a first stream during each of the corresponding active periods of time. The first stream is received at a first-stream burst data rate. The first stream includes data configured to be displayed at a first playback rate that is substantially less than the first-stream burst data rate. During the active periods of time, data is received from a second stream at a second-stream rate. The second stream includes data configured to be displayed at a second playback rate that is substantially the same as the second-stream rate. After receiving each of the burst transmissions from the first stream during the active periods of time, the power saving mode is entered for corresponding fixed and periodic power-saving periods of time while waiting for another burst from the first stream.Type: GrantFiled: October 12, 2012Date of Patent: December 17, 2013Assignee: Thomson LicensingInventors: Benyuan Zhang, Wen Gao, Kumar Ramaswamy, Paul Gothard Knutson, Joshua Lawrence Koslov, Manoj Viswambharan, Yik Chung Wu
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Patent number: 8340159Abstract: A multipath searcher and method includes a programmable decimation filter configured to adjust a sample rate of a received pilot signal. A plurality of correlators is configured to compare the received pilot signal to a reference code in a first mode and in a second mode. The first mode includes a low resolution search of a search window performed such that the plurality of correlators encompass an entire search window concurrently and the plurality of correlators receives a delayed reference code delayed to correspond with a portion of the search window in which a corresponding correlator performs correlation to identify peaks in the received pilot signal. The second mode includes a high resolution search of a refined search window only at or near identified peaks discovered in the first mode. The high resolution search is focused at the peak location by adjusting delays in the plurality of correlators.Type: GrantFiled: January 27, 2006Date of Patent: December 25, 2012Assignee: Thomson LicensingInventors: Benyuan Zhang, Paul Gothard Knutson
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Patent number: 8315314Abstract: An implementation provides a transmitter that separates sequential portions of data in a first set of data by time intervals allowing a power saving mode (1005). The transmitter transmits the sequential portions of data separated by respective time intervals having lengths configured to allow a receiver to enter and exit a power saving mode between receiving sequentially transmitted portions of data from the first set of data (1010). The transmitter separates sequential portions of data in a second set by time intervals that are not of sufficient length to allow a receiver to enter and exit a power saving mode during the time intervals (1015). The second set of data is then transmitted (1020).Type: GrantFiled: December 19, 2006Date of Patent: November 20, 2012Assignee: Thomson LicensingInventors: Paul Gothard Knutson, Kumar Ramaswamy, Joshua Lawrence Koslov, Manoj Viswambharan, Benyuan Zhang, Wen Gao, Yik Chung Wu
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Publication number: 20120274859Abstract: The invention relates to a wireless home gateway apparatus and methods of wirelessly delivering audio and/or video programs between a home gateway and a client device and to interference mitigation techniques on such system. Specifically, the invention relates to transmitting an audio video program on a first channel, receiving a control signal from a remote control indicating interference on said first channel, changing the transmission channel to a second channel, and transmitting data indicating said second channel to said remote control.Type: ApplicationFiled: February 9, 2010Publication date: November 1, 2012Inventors: Paul Gothard Knutson, Wen Gao, Benyuan Zhang, Hou-Shin Chen
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Patent number: 8081576Abstract: A method and apparatus for identifying valid multipath energy peaks are described including locating an energy peak in a profile of energy peaks, categorizing the located energy peak based on a plurality of thresholds and processing energy peaks in at least one of the categories of located energy peaks. The method and apparatus further includes removing a direct current value component from each value in the profile of energy peaks, calculating a noise floor for a multipath searching window and determining a first threshold and a second threshold. The step and means for categorizing further includes determining if the located energy peak exceeds the first threshold, labeling the located energy peak as a false alarm, if the located energy peak does not exceed the first threshold, determining if the located energy peak exceeds the second threshold and labeling the located energy peak as confident, if the located energy peak exceeds the second threshold.Type: GrantFiled: June 24, 2005Date of Patent: December 20, 2011Assignee: Thomson LicensingInventors: Benyuan Zhang, Paul Gothard Knutson
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Publication number: 20100283918Abstract: A receiver is an ATSC receiver having at least two modes of operation. In a first mode of operation the ATSC receiver determines an initial carrier frequency offset with respect to a carrier frequency in the received signal as a function of a field sync signal in the received signal. In a second mode of operation, the ATSC receiver tracks a carrier frequency in a received signal using a carrier tracking loop.Type: ApplicationFiled: December 27, 2007Publication date: November 11, 2010Inventor: Benyuan Zhang
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Publication number: 20100242078Abstract: An Advanced Television Systems Committee Digital Television (ATSC DTV) transmitter transmits a digital multiplex that includes a legacy DTV channel and a mobile DTV channel. The mobile DTV channel is conveyed in mobile packets that comprise mobile data and additional mobile training information. A mobile packet comprises 207 bytes wherein 2 bytes are header information, 20 bytes are Reed-Solomon (RS) parity information and 185 bytes convey mobile data and mobile training information. The mobile training information is inserted into mobile packets such that the additional training information appears in contiguous positions after convolutional interleaving.Type: ApplicationFiled: June 20, 2008Publication date: September 23, 2010Inventors: Wen Gao, Benyuan Zhang, Paul Knutson
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Publication number: 20100220603Abstract: A method and apparatus for identifying valid multipath energy peaks are described including locating an energy peak in a profile of energy peaks, categorizing the located energy peak based on a plurality of thresholds and processing energy peaks in at least one of the categories of located energy peaks. The method and apparatus further includes removing a direct current value component from each value in the profile of energy peaks, calculating a noise floor for a multipath searching window and determining a first threshold and a second threshold. The step and means for categorizing further includes determining if the located energy peak exceeds the first threshold, labeling the located energy peak as a false alarm, if the located energy peak does not exceed the first threshold, determining if the located energy peak exceeds the second threshold and labeling the located energy peak as confident, if the located energy peak exceeds the second threshold.Type: ApplicationFiled: June 24, 2005Publication date: September 2, 2010Inventors: Benyuan Zhang, Paul Gothard Knutson
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Publication number: 20100118206Abstract: A signal comprises a sequence of fields, each field having a synchronization portion and a data portion, a transmitter inserts a pseudonoise (PN) sequence into the synchronization portion of a field for use in identifying a presence of mobile data in the data portion of that field; and transmits the signal. In complementary fashion, a receiver receives the signal and upon detecting the PN sequence in the synchronization portion of the received signal determines whether or not mobile data is in the data portion of that field of the received signal.Type: ApplicationFiled: June 20, 2008Publication date: May 13, 2010Inventors: Wen Gao, Benyuan Zhang, Paul Knutson