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David Zhao patents

Recent patents with David Zhao listed as an inventor - additional entries may be under other spellings.


David Zhao - Related organizations: Microsoft Technology Licensing, Llc patents, Microsoft Corporation patents, Skype Limited patents

Estimating quality of a video signal

03/24/16 - 20160088293 - Method, device and computer program product for estimating quality of a video signal, wherein frames of the video signal are received at receiving means of the device, each frame comprising a plurality of blocks of pixels. A section of a first frame of the video signal, which is correctly received,
Inventors: Pontus Carlsson, Andrei Jefremov, Sergey Silkin, David Zhao

Region-of-interest aware video coding

01/15/15 - 20150016510 - An encoder comprising an encoding module and an adaptation module. The encoding module is configured to encode video in at least one region-of-interest and outside the region-of-interest. The encoding comprises quantization, and the encoding module is operable to apply a difference in quantization granularity between the encoding inside and outside
Inventors: Pontus Carlsson, Magnus Hemmendorff, Konrad Hofbauer, Sergei Nikiforov, David Zhao

Resource for encoding a video signal

10/16/14 - 20140307771 - An apparatus for encoding video data, the apparatus comprising a compliance module configured to compare a resource requirement associated with encoding video data to form at least part of an encoded frame using a standard encoding mode with an acceptable resource level and an encoder configured to, responsive to a
Inventors: Magnus Hemmendorff, David Zhao, Sergey Sablin, Pontus Carlsson, Konrad Hofbauer, Sergei Nikiforov

Conditional concealment of lost video data

07/31/14 - 20140211860 - A receiving apparatus comprises a receiver for receiving a video signal, an output for outputting the video signal to a screen, storage device or further terminal; and a concealment module for applying a concealment algorithm to a lost area of the video signal. The concealment module is configured to determine
Inventors: David Zhao, Sergey Nikiforov, Konrad Hofbauer, Magnus Hemmendorff, Pontus Carlsson

Spatially adaptive video coding

07/31/14 - 20140211858 - A video signal comprises a sequence of source frames to be encoded. A pre-processing stage determines a region of interest for a plurality of the source frames, and spatially adapts each of the plurality of the source frames to produce a respective warped frame. In the respective warped frame, the
Inventors: David Zhao, Sergey Nikiforov, Konrad Hofbauer, Magnus Hemmendorff, Pontus Carlsson

Adapting robustness in video coding

07/31/14 - 20140211842 - An input receives a video signal comprising a plurality of frames, each comprising a plurality of image portions. Each of the image portions is encoded by an encoder, to generate an encoded signal. An adaptation module selects a respective encoding mode used to encode each of the image portions. The
Inventors: David Zhao, Sergey Nikiforov, Konrad Hofbauer, Magnus Hemmendorff, Pontus Carlsson

Real-time communication

12/12/13 - 20130329751 - Receiver, computer program product and method for processing data of a real-time communication event. A processing module of the receiver implements a real-time communication application to receive a data stream of the real-time communication event. Data of the received data stream is output to a user in the real-time communication
Inventors: David Zhao, Christoffer Asgaard Rodbro

Encoding and transmitting video streams

10/03/13 - 20130259114 - The invention relates to a method of encoding a video stream comprising, receiving a video signal comprising a plurality of frames, each frame comprising one or more portion of video data displaying to a user a video image derived from the video signal; receiving from the user selection of at
Inventors: Pontus Carlsson, Andrei Jefremov, Sergey Sablin, David Zhao

Estimating quality of a video signal

05/09/13 - 20130114002 - Method, device and computer program product for estimating quality of a video signal, wherein frames of the video signal are received at receiving means of the device, each frame comprising a plurality of blocks of pixels. A section of a first frame of the video signal, which is correctly received,
Inventors: Pontus Carlsson, Andrei Jefremov, Sergey Silkin, David Zhao

Transmission of video data

04/25/13 - 20130101030 - In an embodiment, a method of transmitting video data includes at an encoder encoding the video data as a plurality of frames, including reference frames and intermediate frames, at least some of which are encoded based on multiple reference frames; at the encoder maintaining for each frame a current list
Inventors: Pontus Carlsson, Andrei Jefremov, Sergey Sablin, David Zhao

Received video stabilization

04/18/13 - 20130093906 - Method, device and computer program product for stabilizing a received video signal. A plurality of frames of the video signal is captured using a camera. The video signal is transmitted as an encoded bit stream. Displacement of the camera between successive frames is determined from a motion indication in the
Inventors: Pontus Carlsson, Andrei Jefremov, Sergey Sablin, David Zhao

Video coding

03/07/13 - 20130058405 - A method of performing a rate-distortion optimization process comprising, for each of a plurality of target image portions to be encoded in each of a plurality of frames, selecting a preferred one of a set of encoding modes by optimizing a function comprising an estimate of distortion for the target
Inventors: David Zhao, Mattias Nilsson, Renat Vafin, Andrei Jefremov, Sören Vang Andersen, Pontus Carlsson

Signal processing

03/07/13 - 20130058232 - According to an embodiment, a mobile device includes wireless access circuitry configured to access a wireless communication network; a processor for executing a communication client application to conduct a packet-based call with a remote device via a channel established over the wireless communication network, the communication client application configured to
Inventors: Karlheinz Wurm, Andrei Jefremov, David Zhao

Video stabilization

12/06/12 - 20120307086 - Method, device and computer program product for stabilizing a video signal. A plurality of frames of the video signal are captured using a camera. A motion sensor associated with the camera is used to generate a plurality of samples representing motion of the camera. The samples are used to determine
Inventors: Andrei Jefremov, David Zhao, Pontus Carlsson

Transmitting a video signal

08/30/12 - 20120219067 - An encoder allocates index numbers to portions of a video signal transmitted over a network to a decoder. At least some of the portions are stored in an encoder buffer. Feedback is received from the network at a remote control block, indicating whether the transmitted portions are correctly received. Based
Inventors: Andrei Jefremov, David Zhao, Sergey Sablin

Concealment of data loss for video decoding

07/05/12 - 20120170658 - In an embodiment, a system includes a receiver for receiving a video signal over a lossy medium and a decoder coupled to the receiver and arranged to decode the video signal for output to a display. The decoder includes a concealment module for regenerating a portion of image data lost
Inventors: Ian Anderson, Andrei Jefremov, Renat Vafin, David Zhao

Coding data streams

06/23/11 - 20110153782 - A method of delivering an encoded data stream to a plurality of recipient end-user nodes of a network includes receiving an incoming encoded data stream at a first recipient node from a transmitting node over the network. During ongoing receipt of the incoming encoded data stream at the first recipient
Inventors: David Zhao

Video coding

03/10/11 - 20110058607 - A method of transmitting video, a method of receiving and decoding video, and a corresponding transmitter, receiver and computer program products. The method of transmitting video to one or more recipient terminals comprises: transmitting a stream of inter frame encoded video data to a recipient terminal; during ongoing transmission of
Inventors: David Zhao


### David Zhao patent invention listings

The bibliographic references displayed about David Zhao's patents are for a recent sample of David Zhao's publicly published patent applications. The inventor/author may have additional bibliographic citations listed at the USPTO.gov. FreshPatents.com is not associated or affiliated in any way with the author/inventor or the United States Patent/Trademark Office but is providing this non-comprehensive sample listing for educational and research purposes using public bibliographic data published and disseminated from the United States Patent/Trademark Office public datafeed. This information is also available for free on the USPTO.gov website. If David Zhao filed recent patent applications under another name, spelling or location then those applications could be listed on an alternate page. If no bibliographic references are listed here, it is possible there are no recent filings or there is a technical issue with the listing--in that case, we recommend doing a search on the USPTO.gov website.

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