Patents by Inventor Lulin Chen

Lulin Chen 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: 9025676
    Abstract: A method, system and device are provided for pre-filtering device for filtering a video signal prior to digitally encoding. The method includes receiving at least one input picture and at least one reconstructed picture from an encoding process and performing an in-loop temporal filtering process using at least one input picture and at least one reconstructed picture from an encoding process to output a pre-filtered video signal for use in an encoding process. The result is enabling an encoding process to produce an output with increased temporal correlation between adjacent pictures regardless of the coding type, since the artifacts introduced by the encoding process are also considered by the process.
    Type: Grant
    Filed: July 10, 2012
    Date of Patent: May 5, 2015
    Assignee: GEO Semiconductor Inc.
    Inventors: José Roberto Alvarez, Lulin Chen, Alexandros Michael Tourapis
  • Publication number: 20150088943
    Abstract: An embodiment Media-Aware File System (MAFS) includes a network node having a processor executing programming stored on a non-transitory computer readable medium of the network node. The programming includes instructions to: receive a first media stream made up of a plurality of primary frames; receive a primary namespace for the first media stream; determine a first file name for the first media stream and a second file name for a second media stream in accordance with the primary namespace; and determine a partition index for partitioning the first media stream into a plurality of groups of primary frames, including a first group having a first length in frames and a second group having a different length. The programming also includes instructions to determine the second media stream that includes a derived group of frames, including at least one frame that is derived in accordance with the first group.
    Type: Application
    Filed: September 25, 2014
    Publication date: March 26, 2015
    Inventors: Xudong Song, Lulin Chen, Xiaobing Lee
  • Publication number: 20140267833
    Abstract: A mobile device comprising a processor configured to merge a plurality of images each having a distinct focus position in a scene to generate a focus-stacked image that encompasses all focus positions of the plurality of images. Also, an apparatus comprising a camera configured to capture a plurality of color images for one scene each with a distinct focus distance and a processor configured to register the plurality of color images to generate a plurality of registered color images, generate a plurality of luminance (Y) channels from the plurality of registered color images, and stack the plurality of Y channels to generate a focus-stacked Y channel.
    Type: Application
    Filed: March 12, 2013
    Publication date: September 18, 2014
    Applicant: Futurewei Technologies, Inc.
    Inventors: Lulin Chen, Meng Liu, Xudong Song
  • Patent number: 8831093
    Abstract: In some embodiments, macroblock-level encoding parameters are assigned to weighted linear combinations of corresponding content-category-level encoding parameters. For example, a macroblock quantization parameter (QP) modulation is set to a weighted linear combination of content category QP modulations. Content categories may identify potentially overlapping content types such as sky, water, grass, skin, and red content. The combination weights may be similarity measures describing macroblock similarities to content categories. A macroblock may be associated with multiple content categories, with different similarity levels for different content categories. A similarity measure for a given macroblock with respect to a content category may be defined as a number (between 0 and 8) of neighboring macroblocks that meet a similarity condition, provided the macroblock meets a qualification condition. The similarity condition may be computationally simpler than the qualification condition.
    Type: Grant
    Filed: April 2, 2012
    Date of Patent: September 9, 2014
    Assignee: Geo Semiconductor Inc.
    Inventors: Ilie Garbacea, Lulin Chen, Jose R. Alvarez
  • Patent number: 8774272
    Abstract: In some embodiments, a video encoding method includes controlling a set of block encoding modes in a plurality of inter video frames in a group of pictures (GOP) according to a frame position in the group of pictures, to generally decrease a forward inter-encoded frame content with the frame position in the group of pictures. An encoding mode determination is made for inter-frame encoding blocks (e.g. macroblocks) according to the frame position in the group of pictures. The determination may include forcing a block encoding mode to an intra, backward inter-predicted, or backward strong-weighted bi-predicted mode. The determination may be performed according to a frame type (P/B), frame position in GOP, frame content, a selected temporal and spatial pattern, a bit cost of making an encoding mode decision, and an available bit rate. The fraction of mode-forced blocks is generally increased as the GOP frame position advances.
    Type: Grant
    Filed: July 15, 2005
    Date of Patent: July 8, 2014
    Assignee: Geo Semiconductor Inc.
    Inventor: Lulin Chen
  • Publication number: 20130188689
    Abstract: In some embodiments, macroblock-level encoding parameters are assigned to weighted linear combinations of corresponding content-category-level encoding parameters. For example, a macroblock quantization parameter (QP) modulation is set to a weighted linear combination of content category QP modulations. Content categories may identify potentially overlapping content types such as sky, water, grass, skin, and red content. The combination weights may be similarity measures describing macroblock similarities to content categories. A macroblock may be associated with multiple content categories, with different similarity levels for different content categories. A similarity measure for a given macroblock with respect to a content category may be defined as a number (between 0 and 8) of neighboring macroblocks that meet a similarity condition, provided the macroblock meets a qualification condition. The similarity condition may be computationally simpler than the qualification condition.
    Type: Application
    Filed: April 2, 2012
    Publication date: July 25, 2013
    Applicant: MAXIM INTEGRATED PRODUCTS, INC.
    Inventors: Ilie Garbacea, Lulin Chen, Jose R. Alvarez
  • Publication number: 20130003872
    Abstract: A method, system and device are provided for pre-filtering device for filtering a video signal prior to digitally encoding. The method includes receiving at least one input picture and at least one reconstructed picture from an encoding process and performing an in-loop temporal filtering process using at least one input picture and at least one reconstructed picture from an encoding process to output a pre-filtered video signal for use in an encoding process. The result is enabling an encoding process to produce an output with increased temporal correlation between adjacent pictures regardless of the coding type, since the artifacts introduced by the encoding process are also considered by the process.
    Type: Application
    Filed: July 10, 2012
    Publication date: January 3, 2013
    Inventors: José Roberto Alvarez, Lulin Chen, Alexandros Michael Tourapis
  • Patent number: 8325797
    Abstract: A novel system and method of Reduced-Temporal-Resolution Update (RTRU) and quantizing video transform coefficients is provided for use using hybrid coding standards when receiving a frame from within a group of video frames, where the amplitude of the quantization parameter is defined for the quantization of the frame according to a reduced temporal resolution update process; where the amplitude of the quantization parameter for macroblocks in the frame is defined according to a reduced temporal resolution update process; and where a bitstream is composed for transmission and subsequent decoding by a standard compliant decoder.
    Type: Grant
    Filed: April 11, 2005
    Date of Patent: December 4, 2012
    Assignee: Maxim Integrated Products, Inc.
    Inventors: Lulin Chen, Jiangtao Wen
  • Patent number: 8218655
    Abstract: A method, system and device are provided for pre-filtering device for filtering a video signal prior to digitally encoding. The method includes receiving at least one input picture and at least one reconstructed picture from an encoding process and performing an in-loop temporal filtering process using at least one input picture and at least one reconstructed picture from an encoding process to output a pre-filtered video signal for use in an encoding process. The result is enabling an encoding process to produce an output with increased temporal correlation between adjacent pictures regardless of the coding type, since the artifacts introduced by the encoding process are also considered by the process.
    Type: Grant
    Filed: September 19, 2005
    Date of Patent: July 10, 2012
    Assignee: Maxim Integrated Products, Inc.
    Inventors: Alexandros Michael Tourapis, Lulin Chen, Jose Roberto Alvarez
  • Patent number: 8149909
    Abstract: In some embodiments, macroblock-level encoding parameters are assigned to weighted Linear combinations of corresponding content-category-level encoding parameters. A macroblock quantization parameter (QP) modulation is set to a weighted linear combination of content category QP modulations. Content categories may identify potentially overlapping content types. The combination weights may be similarity measures describing macroblock similarities to content categories. A macroblock may be associated with multiple content categories, with different similarity levels for different content categories. A similarity measure for a given macroblock with respect to a content category may be defined as a number (between 0 and 8) of neighboring macroblocks that meet a similarity condition, provided the macroblock meets a qualification condition. The similarity condition may be computationally simpler than the qualification condition. Content-category-level statistics are generated by combining block-level statistics.
    Type: Grant
    Filed: October 13, 2005
    Date of Patent: April 3, 2012
    Assignee: Maxim Integrated Products, Inc.
    Inventors: Ilie Garbacea, Lulin Chen, Jose R. Alvarez
  • Patent number: 8126283
    Abstract: In some embodiments, content-category-level encoding statistical indicators (statistics) are assigned to weighted linear combinations of corresponding macroblock-level statistics. Content categories may identify potentially overlapping content types such as sky, water, grass, skin, and red content. The combination weights may be similarity measures describing macroblock similarities to content categories. A given macroblock may be associated with multiple content categories, with different similarity levels for different content categories. A similarity measure for a given macroblock with respect to a content category may be defined as a number (between 0 and 8) of neighboring macroblocks that meet a similarity condition, provided the macroblock meets a qualification condition. The similarity condition may be computationally simpler than the qualification condition. Macroblock-level encoding parameters are generated by combining content-category-level parameters.
    Type: Grant
    Filed: October 13, 2005
    Date of Patent: February 28, 2012
    Assignee: Maxim Integrated Products, Inc.
    Inventors: Ilie Garbacea, Lulin Chen, Jose R. Alvarez
  • Patent number: 8094716
    Abstract: A method for hybrid video coding is disclosed. The method generally includes the steps of (A) calculating a bit rate based on a percentage of quantized zero coefficients resulting from encoding a plurality of components of a video signal, (B) calculating a distortion based on the percentage of quantized zero coefficients, (C) calculating a plurality of variances of a plurality of prediction error pictures and (D) calculating an adaptive Lagrangian multiplier in a Lagrangian rate-distortion optimization as a function of the bit rate, the distortion and the variance to minimize a Lagrangian cost.
    Type: Grant
    Filed: November 8, 2005
    Date of Patent: January 10, 2012
    Assignee: Maxim Integrated Products, Inc.
    Inventors: Lulin Chen, Ilie Garbacea
  • Patent number: 8081682
    Abstract: In some embodiments, encoding modes for a video image block are enabled according to similarity measures of the block with respect to multiple content categories. Content categories may identify potentially overlapping content types such as sky, water, grass, skin, and red content. In a priority mode, the encoding modes specified by a priority content category (e.g. a red category) are selectively enabled for the block, regardless of the block's similarity to other (non-priority) content categories, provided the block is sufficiently similar to the priority category. In a dominant mode, the encoding modes enabled by a maximum-similarity content category are enabled for the block. In an all-inclusive mode, any mode enabled by any sufficiently-similar content category is enabled for the block. Enabled encoding modes may be further evaluated for selection for the block. Encoding modes may include inter/intra modes, macroblock partition sizes, and intra-prediction directions.
    Type: Grant
    Filed: October 13, 2005
    Date of Patent: December 20, 2011
    Assignee: Maxim Integrated Products, Inc.
    Inventors: Ilie Carbacea, Lulin Chen, Jose R. Alvarez
  • Publication number: 20110059124
    Abstract: This invention discloses a kind of quality control method and application of Ganoderma lucidium spore oil fat emulsion. Which includes Ganoderma lucidium spore oil 2˜25%, emulsifier 0.5˜10%, isosmotic agent 0.2˜5%, the remaining content is water and the final pH of Fat emulsion is adjusted to 6˜9. The quality control method of this invention can accurately determine the content of 1,2-oleic-3-palmitic triglyceride and glycerol trioleate in the preparation, and accurately determine the ergosterol content, which serves as the method and basis for quality control of this product. Fingerprints are utilized to grasp the product quality from the overall characteristics of Chromatogram. This invention has clearly defined active ingredients, with excellent bioactivity, and is capable of tumor treatment, while improving the organism's immunity, as well as the life quality of tumor patients undergoing radiotherapy and chemotherapy, and relieving the drug toxicity after treatment.
    Type: Application
    Filed: February 26, 2008
    Publication date: March 10, 2011
    Applicant: Guangzhou Hanfang Natural Medicine Research & Development Co.Ltd
    Inventors: Lulin Chen, Fahuan Ge, Wenjun Chen, Ronghua Zeng, Genghai Meng, Aishao Zhang, Qingshui Lai, Zhaojian Jiang
  • Publication number: 20070064815
    Abstract: A method, system and device are provided for pre-filtering device for filtering a video signal prior to digitally encoding. The method includes receiving at least one input picture and at least one reconstructed picture from an encoding process and performing an in-loop temporal filtering process using at least one input picture and at least one reconstructed picture from an encoding process to output a pre-filtered video signal for use in an encoding process. The result is enabling an encoding process to produce an output with increased temporal correlation between adjacent pictures regardless of the coding type, since the artifacts introduced by the encoding process are also considered by the process.
    Type: Application
    Filed: September 19, 2005
    Publication date: March 22, 2007
    Applicant: Mobilygen Corp.
    Inventors: Jose Alvarez, Lulin Chen, Alexandros Tourapis
  • Publication number: 20060227868
    Abstract: A novel system and method of Reduced-Temporal-Resolution Update (RTRU) and quantizing video transform coefficients is provided for use using hybrid coding standards when receiving a frame from within a group of video frames, where the amplitude of the quantization parameter is defined for the quantization of the frame according to a reduced temporal resolution update process; where the amplitude of the quantization parameter for macroblocks in the frame is defined according to a reduced temporal resolution update process; and where a bitstream is composed for transmission and subsequent decoding by a standard compliant decoder.
    Type: Application
    Filed: April 11, 2005
    Publication date: October 12, 2006
    Applicant: Mobilygen Corp.
    Inventors: Lulin Chen, Jiangtao Wen