Patents by Inventor Peter Hungye Chou
Peter Hungye Chou 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: 8995522Abstract: A method and system are provided for encoding a picture. The method includes encoding the picture into a first encoded picture using a first universal quantizer. If a size of the first encoded picture is greater than a maximum picture size, the method includes encoding the picture into a second encoded picture using a second universal quantizer. Before a second-pass encoding, the target size and maximum size for each slice is determined. During the second pass encoding, if a size of the encoded slice is greater than the maximum slice size, the method includes encoding the slice using a third local quantizer. If a size of the encoded slice is still greater than a maximum slice size, the method includes dropping coefficients from the encoded slice to ensure that the encoded size never exceeds the maximum size.Type: GrantFiled: April 13, 2007Date of Patent: March 31, 2015Assignee: Apple Inc.Inventors: Ken Kengkuan Lin, Peter Hungye Chou, Shahriar Mohammad Akramullah
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Patent number: 8958481Abstract: Methods and systems are provided for encoding and decoding a video stream. Each picture in a video stream can be divided into slices, each of which contains a contiguous row of macroblocks. All the blocks corresponding to a single video component within each slice can then be used as the basis for encoding the picture. By decomposing each picture into slices, the video stream can be efficiently converted for displays of varying size and/or quality. The encoded bitstream can include a slice table to allow direct access to each slice without reading the entire bitstream. Each slice can also be processed independently, allowing for parallelized encoding and/or decoding.Type: GrantFiled: November 8, 2013Date of Patent: February 17, 2015Assignee: Apple Inc.Inventors: Ken Kengkuan Lin, Peter Hungye Chou, Mitchell Howard Oslick, Gregory Kent Wallace, Shahriar M. Akramullah
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Publication number: 20140064382Abstract: Methods and systems are provided for encoding and decoding a video stream. Each picture in a video stream can be divided into slices, each of which contains a contiguous row of macroblocks. All the blocks corresponding to a single video component within each slice can then be used as the basis for encoding the picture. By decomposing each picture into slices, the video stream can be efficiently converted for displays of varying size and/or quality. The encoded bitstream can include a slice table to allow direct access to each slice without reading the entire bitstream. Each slice can also be processed independently, allowing for parallelized encoding and/or decoding.Type: ApplicationFiled: November 8, 2013Publication date: March 6, 2014Applicant: APPLE INC.Inventors: Ken Kengkuan Lin, Peter Hungye Chou, Mitchell Howard Oslick, Gregory Kent Wallace, Shahrier M. Akramullah
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Patent number: 8619874Abstract: Methods and systems are provided for encoding and decoding a video stream. Each picture in a video stream can be divided into slices, each of which contains a contiguous row of macroblocks. All the blocks corresponding to a single video component within each slice can then be used as the basis for encoding the picture. By decomposing each picture into slices, the video stream can be efficiently converted for displays of varying size and/or quality. The encoded bitstream can include a slice table to allow direct access to each slice without reading the entire bitstream. Each slice can also be processed independently, allowing for parallelized encoding and/or decoding.Type: GrantFiled: April 13, 2007Date of Patent: December 31, 2013Assignee: Apple Inc.Inventors: Ken Kengkuan Lin, Peter Hungye Chou, Mitchell Howard Oslick, Gregory Kent Wallace, Shahriar M. Akramullah
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Patent number: 8582656Abstract: Methods and systems are provided for encoding and decoding a video stream. Each picture in a video stream can be divided into slices, each of which contains a contiguous row of macroblocks. All the blocks corresponding to a single video component within each slice can then be used as the basis for encoding the picture. By decomposing each picture into slices, the video stream can be efficiently converted for displays of varying size and/or quality. The encoded bitstream can include a slice table to allow direct access to each slice without reading the entire bitstream. Each slice can also be processed independently, allowing for parallelized encoding and/or decoding.Type: GrantFiled: April 13, 2007Date of Patent: November 12, 2013Assignee: Apple Inc.Inventors: Ken Kengkuan Lin, Peter Hungye Chou, Mitchell Howard Oslick, Gregory Kent Wallace, Shahriar M. Akramullah
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Patent number: 8437392Abstract: Systems and methods for editing and selectively encoding video. In general, in one implementation, the method includes generating video segments from portions of one or more video sources, at least one video source being encoded to have interframe dependencies; generating a video sequence from the video segments; scanning the generated video sequence to identify invalid interframe dependencies; and selectively reencoding portions of the generated video sequence to generate an output video sequence having valid interframe dependencies. The method may further comprise generating the output video sequence without reencoding valid portions of the video sequence. Valid portions of the video sequence may comprise portions lacking invalid interframe dependencies or buffer violations.Type: GrantFiled: April 15, 2005Date of Patent: May 7, 2013Assignee: Apple Inc.Inventors: Peter Hungye Chou, Gregory Kent Wallace, Sachin Agarwal, Jian Lu
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Patent number: 8358701Abstract: The decode resolution of a video signal can be varied during decoding by decoding a first portion of a video signal at a first resolution; determining a second resolution, different from the first resolution, at which a second portion of the video signal is to be decoded; adjusting one or more reference pictures associated with the video signal to correspond to the second resolution; and decoding the second portion of the video signal at the second resolution. The second resolution, at which the second portion of the video signal is decoded, can be selected from a plurality of predetermined decoding resolutions in response to the detection of a predetermined condition or in response to an input received from a user. Additionally, one or more reference pictures associated with the video signal can be up-sampled or down-sampled in at least one of the horizontal direction and the vertical direction.Type: GrantFiled: April 15, 2005Date of Patent: January 22, 2013Assignee: Apple Inc.Inventors: Peter Hungye Chou, Giovanni Agnoli, Haitao Guo, Siladitya Bhattacharya, Vikrant Kasarabada
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Publication number: 20080253461Abstract: Methods and systems are provided for encoding and decoding a video stream. Each picture in a video stream can be divided into slices, each of which contains a contiguous row of macroblocks. All the blocks corresponding to a single video component within each slice can then be used as the basis for encoding the picture. By decomposing each picture into slices, the video stream can be efficiently converted for displays of varying size and/or quality. The encoded bitstream can include a slice table to allow direct access to each slice without reading the entire bitstream. Each slice can also be processed independently, allowing for parallelized encoding and/or decoding.Type: ApplicationFiled: April 13, 2007Publication date: October 16, 2008Applicant: APPLE INC.Inventors: Ken Kengkuan LIN, Peter Hungye CHOU, Mitchell Howard OSLICK, Gregory Kent WALLACE, Shahriar M. AKRAMULLAH
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Publication number: 20080253463Abstract: Methods and systems are provided for encoding and decoding a video stream. Each picture in a video stream can be divided into slices, each of which contains a contiguous row of macroblocks. All the blocks corresponding to a single video component within each slice can then be used as the basis for encoding the picture. By decomposing each picture into slices, the video stream can be efficiently converted for displays of varying size and/or quality. The encoded bitstream can include a slice table to allow direct access to each slice without reading the entire bitstream. Each slice can also be processed independently, allowing for parallelized encoding and/or decoding.Type: ApplicationFiled: April 13, 2007Publication date: October 16, 2008Applicant: APPLE INC.Inventors: Ken Kengkuan LIN, Peter Hungye CHOU, Mitchell Howard OSLICK, Gregory Kent WALLACE, Shahriar M. AKRAMULLAH
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Publication number: 20080253448Abstract: A method and system are provided for encoding a picture. The method includes encoding the picture into a first encoded picture using a first universal quantizer. If a size of the first encoded picture is greater than a maximum picture size, the method includes encoding the picture into a second encoded picture using a second universal quantizer. Before a second-pass encoding, the target size and maximum size for each slice is determined. During the second pass encoding, if a size of the encoded slice is greater than the maximum slice size, the method includes encoding the slice using a third local quantizer. If a size of the encoded slice is still greater than a maximum slice size, the method includes dropping coefficients from the encoded slice to ensure that the encoded size never exceeds the maximum size.Type: ApplicationFiled: April 13, 2007Publication date: October 16, 2008Applicant: APPLE INC.Inventors: Ken Kengkuan LIN, Peter Hungye CHOU, Shahriar Mohammad AKRAMULLAH