Patents by Inventor Minghui Xia

Minghui Xia 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).

  • Patent number: 10341688
    Abstract: Various new and non-obvious apparatus and methods for using frame caching to improve packet loss recovery are disclosed. One of the disclosed embodiments is a method for using periodical and synchronized frame caching within an encoder and its corresponding decoder. When the decoder discovers packet loss, it informs the encoder which then generates a frame based on one of the shared frames stored at both the encoder and the decoder. When the decoder receives this generated frame it can decode it using its locally cached frame.
    Type: Grant
    Filed: April 11, 2016
    Date of Patent: July 2, 2019
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Chih-Lung Lin, Minghui Xia, Pohsiang Hsu, Shankar Regunathan, Thomas W. Holcomb
  • Patent number: 9866871
    Abstract: Various new and non-obvious apparatus and methods for using frame caching to improve packet loss recovery are disclosed. One of the disclosed embodiments is a method for using periodical and synchronized frame caching within an encoder and its corresponding decoder. When the decoder discovers packet loss, it informs the encoder which then generates a frame based on one of the shared frames stored at both the encoder and the decoder. When the decoder receives this generated frame it can decode it using its locally cached frame.
    Type: Grant
    Filed: January 17, 2014
    Date of Patent: January 9, 2018
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Chih-Lung Lin, Minghui Xia, Pohsiang Hsu, Shankar Regunathan, Thomas W. Holcomb
  • Patent number: 9754210
    Abstract: In one implementation, a computer-implemented method for determining user interests includes receiving user activity data that describes an interaction between a user and digital content. The method further includes generating first interest-level data that quantifies a first level of interest between the user and an entity that is a topic of the digital content, where the entity is of a plurality of entities included within a knowledge base. The knowledge base includes an ontology that indicates relationships between the plurality of entities. The method further includes identifying a candidate entity based on the candidate entity having one of the relationships to the entity within the knowledge base. Additionally, the method includes generating second interest-level data that quantifies a second level of interest between the user and the candidate entity based on an analysis of the one of the relationships of the candidate entity to the entity within the knowledge base.
    Type: Grant
    Filed: April 1, 2014
    Date of Patent: September 5, 2017
    Assignee: MICROSOFT TECHNOLOGY LICENSING, LLC
    Inventors: Minghui Xia, Evgeny Podlepaev, Qiaolin Mao, Eric Conrad Ranft, Xiaodong Fan, Ting Cai
  • Publication number: 20170228402
    Abstract: Aspects of the technology are directed to systems and methods for mitigating inconsistencies in a knowledge base. An inconsistency is automatically detected and it is determined whether the inconsistency is based on a source error, such as bad data quality, or an over conflation error of an entity. If the inconsistency is based on a source error, the inconsistent data point is removed. If the inconsistency is based on an over conflation of an entity, the entity is split up into two separate entities.
    Type: Application
    Filed: February 8, 2016
    Publication date: August 10, 2017
    Inventors: Sunil Kumar, Rahul Khot, Minghui Xia
  • Publication number: 20160366445
    Abstract: Various new and non-obvious apparatus and methods for using frame caching to improve packet loss recovery are disclosed. One of the disclosed embodiments is a method for using periodical and synchronized frame caching within an encoder and its corresponding decoder. When the decoder discovers packet loss, it informs the encoder which then generates a frame based on one of the shared frames stored at both the encoder and the decoder. When the decoder receives this generated frame it can decode it using its locally cached frame.
    Type: Application
    Filed: April 11, 2016
    Publication date: December 15, 2016
    Applicant: Microsoft Technology Licensing, LLC
    Inventors: Chih-Lung Lin, Minghui Xia, Pohsiang Hsu, Shankar Regunathan, Thomas W. Holcomb
  • Patent number: 9313501
    Abstract: Various new and non-obvious apparatus and methods for using frame caching to improve packet loss recovery are disclosed. One of the disclosed embodiments is a method for using periodical and synchronized frame caching within an encoder and its corresponding decoder. When the decoder discovers packet loss, it informs the encoder which then generates a frame based on one of the shared frames stored at both the encoder and the decoder. When the decoder receives this generated frame it can decode it using its locally cached frame.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: April 12, 2016
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Chih-Lung Lin, Minghui Xia, Pohsiang Hsu, Shankar Regunathan, Thomas W. Holcomb
  • Publication number: 20150278691
    Abstract: In one implementation, a computer-implemented method for determining user interests includes receiving user activity data that describes an interaction between a user and digital content. The method further includes generating first interest-level data that quantifies a first level of interest between the user and an entity that is a topic of the digital content, where the entity is of a plurality of entities included within a knowledge base. The knowledge base includes an ontology that indicates relationships between the plurality of entities. The method further includes identifying a candidate entity based on the candidate entity having one of the relationships to the entity within the knowledge base. Additionally, the method includes generating second interest-level data that quantifies a second level of interest between the user and the candidate entity based on an analysis of the one of the relationships of the candidate entity to the entity within the knowledge base.
    Type: Application
    Filed: April 1, 2014
    Publication date: October 1, 2015
    Applicant: MICROSOFT CORPORATION
    Inventors: Minghui XIA, Evgeny PODLEPAEV, Qiaolin MAO, Eric Conrad RANFT, Xiaodong FAN, Ting Cai
  • Patent number: 8855202
    Abstract: Techniques and tools are described for flexible range reduction of samples of video. For example, an encoder signals a first set of one or more syntax elements for range reduction of luma samples and signals a second set of one or more syntax elements for range reduction of chroma samples. The encoder selectively scales down the luma samples and chroma samples in a manner consistent with the first syntax element(s) and second syntax element(s), respectively. Or, an encoder signals range reduction syntax element(s) in an entry point header for an entry point segment, where the syntax element(s) apply to pictures in the entry point segment. If range reduction is used for the pictures, the encoder scales down samples of the pictures. Otherwise, the encoder skips the scaling down. A decoder performs corresponding parsing and scaling up operations.
    Type: Grant
    Filed: July 26, 2011
    Date of Patent: October 7, 2014
    Assignee: Microsoft Corporation
    Inventors: Shankar Regunathan, Sridhar Srinivasan, Jie Liang, Chih-Lung Lin, Minghui Xia
  • Publication number: 20140133583
    Abstract: Various new and non-obvious apparatus and methods for using frame caching to improve packet loss recovery are disclosed. One of the disclosed embodiments is a method for using periodical and synchronized frame caching within an encoder and its corresponding decoder. When the decoder discovers packet loss, it informs the encoder which then generates a frame based on one of the shared frames stored at both the encoder and the decoder. When the decoder receives this generated frame it can decode it using its locally cached frame.
    Type: Application
    Filed: January 17, 2014
    Publication date: May 15, 2014
    Applicant: Microsoft Corporation
    Inventors: Chih-Lung Lin, Minghui Xia, Pohsiang Hsu, Shankar Regunathan, Thomas W. Holcomb
  • Patent number: 8634413
    Abstract: Various new and non-obvious apparatus and methods for using frame caching to improve packet loss recovery are disclosed. One of the disclosed embodiments is a method for using periodical and synchronized frame caching within an encoder and its corresponding decoder. When the decoder discovers packet loss, it informs the encoder which then generates a frame based on one of the shared frames stored at both the encoder and the decoder. When the decoder receives this generated frame it can decode it using its locally cached frame.
    Type: Grant
    Filed: December 30, 2004
    Date of Patent: January 21, 2014
    Assignee: Microsoft Corporation
    Inventors: Chih-Lung Lin, Minghui Xia, Pohsiang Hsu, Shankar Regunathan, Thomas W. Holcomb
  • Patent number: 8498335
    Abstract: Techniques and tools are described for adaptive deadzone (“DZ”) resizing during quantization. For example, in some embodiments, for quantization of an AC frequency coefficient of a block, a video encoder adjusts DZ size of a selected quantizer depending on the texture of the block. In other embodiments, a video encoder adjusts DZ size depending on the frequency of a coefficient being quantized. In still other embodiments, for quantization of an AC frequency coefficient of a block, a video encoder adjusts DZ size depending on the texture of the block and the frequency of the coefficient being quantized.
    Type: Grant
    Filed: March 26, 2007
    Date of Patent: July 30, 2013
    Assignee: Microsoft Corporation
    Inventors: Thomas W. Holcomb, Minghui Xia, Chih-Lung Lin, Cheng Chang
  • Patent number: 8422546
    Abstract: A video encoder includes a region detector module that classifies blocks of video frames. An adaptive filter module applies a median filter to a block based upon a block classification assigned by the region detector module. An adaptive quantization module quantizes a block according to a quantization method adaptively determined based upon a block classification assigned by the region detection module. In one example, a video encoder adaptively determines a median filter selected using a block classification. In another example, a video encoder adaptively determines whether to drop an isolated last transform coefficient based on the block classification, and/or applies a dead-zone selected using the block classification.
    Type: Grant
    Filed: May 25, 2005
    Date of Patent: April 16, 2013
    Assignee: Microsoft Corporation
    Inventors: Chih-Lung Lin, Minghui Xia, Pohsiang Hsu, Shou-Jen Wu
  • Publication number: 20130010861
    Abstract: Various new and non-obvious apparatus and methods for using frame caching to improve packet loss recovery are disclosed. One of the disclosed embodiments is a method for using periodical and synchronized frame caching within an encoder and its corresponding decoder. When the decoder discovers packet loss, it informs the encoder which then generates a frame based on one of the shared frames stored at both the encoder and the decoder. When the decoder receives this generated frame it can decode it using its locally cached frame.
    Type: Application
    Filed: September 13, 2012
    Publication date: January 10, 2013
    Applicant: Microsoft Corporation
    Inventors: Chih-Lung Lin, Minghui Xia, Pohsiang Hsu, Shankar Regunathan, Thomas W. Holcomb
  • Publication number: 20110280303
    Abstract: Techniques and tools are described for flexible range reduction of samples of video. For example, an encoder signals a first set of one or more syntax elements for range reduction of luma samples and signals a second set of one or more syntax elements for range reduction of chroma samples. The encoder selectively scales down the luma samples and chroma samples in a manner consistent with the first syntax element(s) and second syntax element(s), respectively. Or, an encoder signals range reduction syntax element(s) in an entry point header for an entry point segment, where the syntax element(s) apply to pictures in the entry point segment. If range reduction is used for the pictures, the encoder scales down samples of the pictures. Otherwise, the encoder skips the scaling down. A decoder performs corresponding parsing and scaling up operations.
    Type: Application
    Filed: July 26, 2011
    Publication date: November 17, 2011
    Applicant: Microsoft Corporation
    Inventors: Shankar Regunathan, Sridhar Srinivasan, Jie Liang, Chih-Lung Lin, Minghui Xia
  • Patent number: 8014450
    Abstract: Techniques and tools are described for flexible range reduction of samples of video. For example, an encoder signals a first set of one or more syntax elements for range reduction of luma samples and signals a second set of one or more syntax elements for range reduction of chroma samples. The encoder selectively scales down the luma samples and chroma samples in a manner consistent with the first syntax element(s) and second syntax element(s), respectively. Or, an encoder signals range reduction syntax element(s) in an entry point header for an entry point segment, where the syntax element(s) apply to pictures in the entry point segment. If range reduction is used for the pictures, the encoder scales down samples of the pictures. Otherwise, the encoder skips the scaling down. A decoder performs corresponding parsing and scaling up operations.
    Type: Grant
    Filed: November 15, 2004
    Date of Patent: September 6, 2011
    Assignee: Microsoft Corporation
    Inventors: Shankar Regunathan, Sridhar Srinivasan, Jie Liang, Chih-Lung Lin, Minghui Xia
  • Patent number: 7974340
    Abstract: The present application is directed to techniques and tools for adapting the quantizer as well as the quantization step size used during video encoding. For example, a video encoder uses a non-uniform quantizer (having a relatively large dead zone ratio) for B-picture types, but uses a uniform quantizer for other types of pictures. In many encoding scenarios, this helps the encoder control bit rate for the B-picture types instead of resorting to higher quantization step sizes, which improves overall quality for the B-picture types.
    Type: Grant
    Filed: April 7, 2006
    Date of Patent: July 5, 2011
    Assignee: Microsoft Corporation
    Inventors: Minghui Xia, Chih-Lung Lin
  • Patent number: 7889789
    Abstract: For each of plural blocks (e.g., 8×16 blocks) in a source interlaced video frame, a video encoder measures vertical intensity level fluctuation between neighboring lines and between alternating lines in the block, and determines an interlace effect status value for the block. For example, the encoder calculates a ratio between the fluctuations of neighboring and alternating lines and compares the ratio with one or more thresholds. The encoder also can measure horizontal intensity level fluctuation and compare it with vertical intensity fluctuation. The encoder determines a frame-level interlace coding mode (e.g., frame mode or field mode) for the frame based at least in part on the interlace effect status values. The encoder can represent a frame-level interlace coding mode decision with a bitstream element, and a decoder can perform one or more video decoding functions based at least in part on the value of the bitstream element.
    Type: Grant
    Filed: April 7, 2006
    Date of Patent: February 15, 2011
    Assignee: Microsoft Corporation
    Inventors: Minghui Xia, Chih-Lung Lin
  • Publication number: 20080240235
    Abstract: Techniques and tools are described for adaptive deadzone (“DZ”) resizing during quantization. For example, in some embodiments, for quantization of an AC frequency coefficient of a block, a video encoder adjusts DZ size of a selected quantizer depending on the texture of the block. In other embodiments, a video encoder adjusts DZ size depending on the frequency of a coefficient being quantized. In still other embodiments, for quantization of an AC frequency coefficient of a block, a video encoder adjusts DZ size depending on the texture of the block and the frequency of the coefficient being quantized.
    Type: Application
    Filed: March 26, 2007
    Publication date: October 2, 2008
    Applicant: Microsoft Corporation
    Inventors: Thomas W. Holcomb, Minghui Xia, Chih-Lung Lin, Cheng Chang
  • Patent number: 7349472
    Abstract: A model stored in a memory accessible by a video transcoder includes a first rate-distortion function modeling a requantization of an input video. A second-rate distortion function models a resynchronization marker insertion rate for the transcoded video, and a third rate-distortion function models an intra-block insertion rate for the transcoded video.
    Type: Grant
    Filed: February 11, 2004
    Date of Patent: March 25, 2008
    Assignee: Mitsubishi Electric Research Laboratories, Inc.
    Inventors: Anthony Vetro, Minghui Xia, Bede Liu, Huifang Sun
  • Publication number: 20070237222
    Abstract: The present application is directed to techniques and tools for adapting the quantizer as well as the quantization step size used during video encoding. For example, a video encoder uses a non-uniform quantizer (having a relatively large dead zone ratio) for B-picture types, but uses a uniform quantizer for other types of pictures. In many encoding scenarios, this helps the encoder control bit rate for the B-picture types instead of resorting to higher quantization step sizes, which improves overall quality for the B-picture types.
    Type: Application
    Filed: April 7, 2006
    Publication date: October 11, 2007
    Applicant: Microsoft Corporation
    Inventors: Minghui Xia, Chih-Lung Lin