Patents by Inventor Hung-Ju Lee

Hung-Ju Lee 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).

  • Publication number: 20190297347
    Abstract: A quantization parameter (QP) used for encoding a current picture is determined using rate control data. One or more sections of the current picture are encoded using the determined QP. After encoding the sections, the rate control data is updated based on statistical data determined from the resulting encoded sections.
    Type: Application
    Filed: June 12, 2019
    Publication date: September 26, 2019
    Inventor: Hung-Ju Lee
  • Patent number: 10419760
    Abstract: A derived quantization parameter for a section of a currently encoding picture of a plurality of pictures is incremented to produce an updated quantization parameter when the derived quantization parameter is less than a minimum quantization parameter for the currently encoding picture. The section is then encoded using the updated quantization parameter. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.
    Type: Grant
    Filed: October 31, 2014
    Date of Patent: September 17, 2019
    Assignee: Sony Interactive Entertainment Inc.
    Inventor: Hung-Ju Lee
  • Patent number: 10349069
    Abstract: In aspects of the present disclosure, a software encoder augments a hardware encoder by implementing portions of a video encoding task that are not supported by the hardware encoder while the hardware encoder implements other portions of the encoding task. The use of a software encoder to augment a hardware encoder in this manner can extend the useful life of a hardware encoder, allow the system to adapt to changes in video coding standards, and in some cases improve performance of encoding implemented by hardware or software alone. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.
    Type: Grant
    Filed: December 11, 2012
    Date of Patent: July 9, 2019
    Assignee: SONY INTERACTIVE ENTERTAINMENT INC.
    Inventors: Jason N. Wang, Hung-Ju Lee
  • Patent number: 10200716
    Abstract: Digital pictures may be encoded and decoded in a way that optimizes parallelization. Selected sections of a digital picture in a first list are encoded independently of encoding any of their neighbor sections. Sections in a second list located to the right of corresponding sections in the first list are encoded using at most the section to their immediate left. Sections in a third list located to the right of a corresponding section in the second list and immediately below a corresponding section in the first list are encoded using at most the sections to the immediate left, immediately above and immediately to its above-right. All other sections of the picture may be encoded in a normal manner.
    Type: Grant
    Filed: June 25, 2015
    Date of Patent: February 5, 2019
    Assignee: Sony Interactive Entertainment Inc.
    Inventors: Rathish Krishnan, Hung-Ju Lee
  • Publication number: 20190020879
    Abstract: A method, system, and computer readable medium for encoding one or more input digital frames with obscured negative regions of interest. The method comprising, comparing frame data to mask data for one or more sections of an input digital frame to determine whether or not a given section of the input digital frame is to be obscured, setting one or more encoding parameters to values that result in corresponding obscured sections when decoded after encoding for each section of the frame that is to be obscured, encoding the one or more sections of the input digital frame to generate corresponding encoded frame data and storing or transmitting the encoded frame data.
    Type: Application
    Filed: July 14, 2017
    Publication date: January 17, 2019
    Inventors: Hung-Ju Lee, Rathish Krishnan
  • Patent number: 10178390
    Abstract: An advanced constant quality rate control algorithm with new features and enhancements. can be applicable to different kinds of video scenes, in addition to static or less motion scenes. Statistical data is calculated at the beginning of encoding for each line of sections of a frame. Based on the statistical data, which case of a plurality of cases to be executed is determined and maximum and minimum QP values are determined according to the determined case. Actual maximum and minimum QP of the current line using is maintained using the maximum and minimum QP and a final QP value is determined for all sections in each line. A lambda value for encoding is determined from the final QP. At the end of encoding the picture, the number of frames encoded using constant quality is counted, the maximum and minimum QP and VBV fullness for each line is updated.
    Type: Grant
    Filed: March 17, 2017
    Date of Patent: January 8, 2019
    Assignee: Sony Interactive Entertainment Inc.
    Inventor: Hung-Ju Lee
  • Publication number: 20180192058
    Abstract: Gaze tracking data is analyzed to determine one or more regions of interest within an image of a video stream. The video stream data is selectively scaled so that sections within the regions of interest maintain high resolution while areas not within the region of interest are down-scaled to reduce bandwidth cost of transmission. A scheme for reduction of motion sickness by reducing the size of the high resolution area is also claimed.
    Type: Application
    Filed: December 13, 2017
    Publication date: July 5, 2018
    Inventors: Eric Hsuming Chen, Hung-Ju Lee, Jason N. Wang, Rathish Krishnan, Deepali Arya
  • Patent number: 9872018
    Abstract: A random access point is generated in a stream of coded digital pictures containing a plurality of predictive coded frames that have two or more predictive coded frames in which one or more subsections of each of the two or more predictive coded frames are intra coded. Information is added to a stream of digital pictures that identifies for a decoder which of two or more predictive-coded frames in the stream have intra-coded subsections at different portions that can be combined to form a patch frame.
    Type: Grant
    Filed: April 28, 2014
    Date of Patent: January 16, 2018
    Assignee: Sony Interactive Entertainment Inc.
    Inventor: Hung-Ju Lee
  • Publication number: 20170289551
    Abstract: An advanced constant quality rate control algorithm with new features and enhancements. can be applicable to different kinds of video scenes, in addition to static or less motion scenes. Statistical data is calculated at the beginning of encoding for each line of sections of a frame. Based on the statistical data, which case of a plurality of cases to be executed is determined and maximum and minimum QP values are determined according to the determined case. Actual maximum and minimum QP of the current line using is maintained using the maximum and minimum QP and a final QP value is determined for all sections in each line. A lambda value for encoding is determined from the final QP. At the end of encoding the picture, the number of frames encoded using constant quality is counted, the maximum and minimum QP and VBV fullness for each line is updated.
    Type: Application
    Filed: March 17, 2017
    Publication date: October 5, 2017
    Inventor: Hung-Ju Lee
  • Publication number: 20170034538
    Abstract: Aspects of the present disclosure include methods and systems for encoding and decoding digital pictures. Encoding may include determining a frame type of the digital picture, and encoding the digital picture with an entropy coding method in accordance with the frame type of the digital picture. Decoding may include determining whether an encoded digital picture includes decoding method identifying information that specifies an encoding method used to encode the encoded digital picture; and decoding the digital picture using an entropy coding method in accordance with the identifying information when the encoded digital picture includes the encoding method identifying information.
    Type: Application
    Filed: July 27, 2015
    Publication date: February 2, 2017
    Inventor: Hung-Ju Lee
  • Publication number: 20160381386
    Abstract: Digital pictures may be encoded and decoded in a way that optimizes parallelization. Selected sections of a digital picture in a first list are encoded independently of encoding any of their neighbor sections. Sections in a second list located to the right of corresponding sections in the first list are encoded using at most the section to their immediate left. Sections in a third list located to the right of a corresponding section in the second list and immediately below a corresponding section in the first list are encoded using at most the sections to the immediate left, immediately above and immediately to its above-right. All other sections of the picture may be encoded in a normal manner.
    Type: Application
    Filed: June 25, 2015
    Publication date: December 29, 2016
    Inventors: Rathish Krishnan, Hung-Ju Lee
  • Patent number: 9386317
    Abstract: A cost function for use in an encoding mode decision for encoding a section of a digital picture is determined using a non-default relationship between Lagrange multiplier (?) values and quantization parameter (QP) values to determine the cost function when a number of bits per section (NBS) of the digital picture is in a predetermined range and determined using a default relationship between the ? values and the QP values to determine the cost function otherwise. The determined cost function is used to make the section encoding mode decision and the section is encoded according to the encoding mode decision. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.
    Type: Grant
    Filed: September 22, 2014
    Date of Patent: July 5, 2016
    Assignee: SONY INTERACTIVE ENTERTAINMENT INC.
    Inventor: Hung-Ju Lee
  • Publication number: 20160094846
    Abstract: A derived quantization parameter for a section of a currently encoding picture of a plurality of pictures is incremented to produce an updated quantization parameter when the derived quantization parameter is less than a minimum quantization parameter for the currently encoding picture. The section is then encoded using the updated quantization parameter. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.
    Type: Application
    Filed: October 31, 2014
    Publication date: March 31, 2016
    Inventor: Hung-Ju Lee
  • Publication number: 20160088299
    Abstract: A cost function for use in an encoding mode decision for encoding a section of a digital picture is determined using a non-default relationship between Lagrange multiplier (?) values and quantization parameter (QP) values to determine the cost function when a number of bits per section (NBS) of the digital picture is in a predetermined range and determined using a default relationship between the A, values and the QP values to determine the cost function otherwise. The determined cost function is used to make the section encoding mode decision and the section is encoded according to the encoding mode decision. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.
    Type: Application
    Filed: September 22, 2014
    Publication date: March 24, 2016
    Inventor: Hung-Ju Lee
  • Publication number: 20150016513
    Abstract: A quantization parameter (QP) used for encoding a current picture is determined using rate control data. One or more sections of the current picture are encoded using the determined QP. After encoding the sections, the rate control data is updated based on statistical data determined from the resulting encoded sections.
    Type: Application
    Filed: September 30, 2014
    Publication date: January 15, 2015
    Inventor: Hung-Ju Lee
  • Patent number: 8913664
    Abstract: Three-dimensional motion mapping is disclosed. A reverse three-dimensional transform for a set of anchor pixels in the current frame is performed using a model-view matrix, a projection matrix, and view parameters associated with the computer game. Reverse transformed anchor pixels are indicated as occluded if the estimated depth for the pixel in the previous frame is greater than a real depth for the pixel in the previous frame or otherwise indicated as visible. A motion vector map for a subset of the reverse transformed pixels is constructed. A best target motion vector for a first set of sections in the current frame is derived or motion estimation is performed for sections in a second set that contain occluded pixels. Target motion vectors for groups of two or more sections of the current frame comprising two or more adjoining sections each with best target motion vectors are derived.
    Type: Grant
    Filed: September 16, 2011
    Date of Patent: December 16, 2014
    Assignee: Sony Computer Entertainment Inc.
    Inventor: Hung-Ju Lee
  • Patent number: 8879623
    Abstract: Computer-implemented rate control in encoding one or more video pictures is disclosed. A quantization parameter (QP) to be used for encoding a current picture one of the one or more video pictures is determined using rate control data that takes picture type, picture complexity, and a target bitcount into account in determining the QP. The current picture is encoded into a compressed format using the QP to generate an encoded current picture. The rate control data is updated based on statistical data determined from the encoded current picture.
    Type: Grant
    Filed: September 2, 2009
    Date of Patent: November 4, 2014
    Assignee: Sony Computer Entertainment Inc.
    Inventor: Hung-Ju Lee
  • Publication number: 20140233640
    Abstract: A random access point is generated in a stream of coded digital pictures containing a plurality of predictive coded frames that have two or more predictive coded frames in which one or more subsections of each of the two or more predictive coded frames are intra coded. Information is added to a stream of digital pictures that identifies for a decoder which of two or more predictive-coded frames in the stream have intra-coded subsections at different portions that can be combined to form a patch frame.
    Type: Application
    Filed: April 28, 2014
    Publication date: August 21, 2014
    Applicant: Sony Computer Entertainment Inc.
    Inventor: Hung-Ju Lee
  • Publication number: 20140161172
    Abstract: In aspects of the present disclosure, a software encoder augments a hardware encoder by implementing portions of a video encoding task that are not supported by the hardware encoder while the hardware encoder implements other portions of the encoding task. The use of a software encoder to augment a hardware encoder in this manner can extend the useful life of a hardware encoder, allow the system to adapt to changes in video coding standards, and in some cases improve performance of encoding implemented by hardware or software alone. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.
    Type: Application
    Filed: December 11, 2012
    Publication date: June 12, 2014
    Inventors: Jason N. Wang, Hung-Ju Lee
  • Patent number: 8737485
    Abstract: A video system is provided including applying a transform to a picture for generating a transformed block of the picture; determining a type of the picture; selecting a coding mode with the transformed block based on the type of the picture; and applying the coding mode to the picture for encoding and displaying the picture.
    Type: Grant
    Filed: January 31, 2007
    Date of Patent: May 27, 2014
    Assignees: Sony Corporation, Sony Electronics Inc.
    Inventors: Ximin Zhang, Hung-Ju Lee