Patents by Inventor Chung-Tao Chu

Chung-Tao Chu 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: 10397592
    Abstract: A method and an apparatus for performing multi-threaded video decoding are disclosed. The method takes use of a multi-threaded scheme to process an encoded picture stream on a picture by picture basis. In the method, multiple threads are used for performing video decoding at the same time, such as one thread for the operation of parsing input bits into syntax elements of one picture implemented by the first thread, another thread for the operation of decoding the parsed syntax elements of another picture into pixel values implemented by the second thread, and the other threads for the operations of the non-reference picture, such as bidirectional predictive picture, including parsing input bits into syntax elements and the subsequent operation of decoding the parsed syntax elements into pixel values. Therefore, the decoding speed is substantially increased, and the decoding efficiency is enhanced.
    Type: Grant
    Filed: December 4, 2017
    Date of Patent: August 27, 2019
    Assignee: COREL SOFTWARE LLC
    Inventors: Ioannis Katsavounidis, Yu-Nien Chien, Chun-Huan Chuang, Chung-Tao Chu, Te-Chien Chen
  • Publication number: 20180098080
    Abstract: A method and an apparatus for performing multi-threaded video decoding are disclosed. The method takes use of a multi-threaded scheme to process an encoded picture stream on a picture by picture basis. In the method, multiple threads are used for performing video decoding at the same time, such as one thread for the operation of parsing input bits into syntax elements of one picture implemented by the first thread, another thread for the operation of decoding the parsed syntax elements of another picture into pixel values implemented by the second thread, and the other threads for the operations of the non-reference picture, such as bidirectional predictive picture, including parsing input bits into syntax elements and the subsequent operation of decoding the parsed syntax elements into pixel values. Therefore, the decoding speed is substantially increased, and the decoding efficiency is enhanced.
    Type: Application
    Filed: December 4, 2017
    Publication date: April 5, 2018
    Applicant: Corel Software, LLC
    Inventors: Ioannis KATSAVOUNIDIS, Yu-Nien Chien, Chun-Huan Chuang, Chung-Tao Chu, Te-Chien Chen
  • Patent number: 9838703
    Abstract: A method and an apparatus for performing multi-threaded video decoding are disclosed. The method takes use of a multi-threaded scheme to process an encoded picture stream on a picture by picture basis. In the method, multiple threads are used for performing video decoding at the same time, such as one thread for the operation of parsing input bits into syntax elements of one picture implemented by the first thread, another thread for the operation of decoding the parsed syntax elements of another picture into pixel values implemented by the second thread, and the other threads for the operations of the non-reference picture, such as bidirectional predictive picture, including parsing input bits into syntax elements and the subsequent operation of decoding the parsed syntax elements into pixel values. Therefore, the decoding speed is substantially increased, and the decoding efficiency is enhanced.
    Type: Grant
    Filed: April 20, 2015
    Date of Patent: December 5, 2017
    Assignee: COREL SOFTWARE LLC
    Inventors: Ioannis Katsavounidis, Yu-Nien Chien, Chun-Huan Chuang, Chung-Tao Chu, Te-Chien Chen
  • Publication number: 20150229935
    Abstract: A method and an apparatus for performing multi-threaded video decoding are disclosed. The method takes use of a multi-threaded scheme to process an encoded picture stream on a picture by picture basis. In the method, multiple threads are used for performing video decoding at the same time, such as one thread for the operation of parsing input bits into syntax elements of one picture implemented by the first thread, another thread for the operation of decoding the parsed syntax elements of another picture into pixel values implemented by the second thread, and the other threads for the operations of the non-reference picture, such as bidirectional predictive picture, including parsing input bits into syntax elements and the subsequent operation of decoding the parsed syntax elements into pixel values. Therefore, the decoding speed is substantially increased, and the decoding efficiency is enhanced.
    Type: Application
    Filed: April 20, 2015
    Publication date: August 13, 2015
    Inventors: Ioannis KATSAVOUNIDIS, Yu-Nien CHIEN, Chun-Huan CHUANG, Chung-Tao CHU, Te-Chien CHEN
  • Patent number: 9014275
    Abstract: A method and an apparatus for performing multi-threaded video decoding are disclosed. The method takes use of a multi-threaded scheme to process an encoded picture stream on a picture by picture basis. In the method, multiple threads are used for performing video decoding at the same time, such as one thread for the operation of parsing input bits into syntax elements of one picture implemented by the first thread, another thread for the operation of decoding the parsed syntax elements of another picture into pixel values implemented by the second thread, and the other threads for the operations of the non-reference picture, such as bidirectional predictive picture, including parsing input bits into syntax elements and the subsequent operation of decoding the parsed syntax elements into pixel values. Therefore, the decoding speed is substantially increased, and the decoding efficiency is enhanced.
    Type: Grant
    Filed: February 21, 2012
    Date of Patent: April 21, 2015
    Assignee: 8324450 Delaware LLC
    Inventors: Ioannis Katsavounidis, Yu-Nien Chien, Chun-Huan Chuang, Chung-Tao Chu, Te-Chien Chen
  • Patent number: 8837854
    Abstract: An image processing method for boundary resolution enhancement is disclosed. Firstly, an image is transferred into an image layer. Noise of the image layer is removed by a bilateral filter and crisp edges are retained at the same time. Moreover, the image layer is interpolated by an interpolation filter for resolution enhancement. The image processing method of the present invention can lower the image blur degree substantially, enhance the image resolution and be widely implemented in all sorts of image/video processing hardware devices.
    Type: Grant
    Filed: December 18, 2012
    Date of Patent: September 16, 2014
    Assignee: Corel Software, LLC
    Inventors: Lihua Zhu, Haihua Wu, Chung-Tao Chu, Richard Hua
  • Patent number: 8335394
    Abstract: An image processing method for boundary resolution enhancement is disclosed. Firstly, an image is transferred into an image layer. Noise of the image layer is removed by a bilateral filter and crisp edges are retained at the same time. Moreover, the image layer is interpolated by an interpolation filter for resolution enhancement. The image processing method of the present invention can lower the image blur degree substantially, enhance the image resolution and be widely implemented in all sorts of image/video processing hardware devices.
    Type: Grant
    Filed: March 26, 2010
    Date of Patent: December 18, 2012
    Assignee: Corel Corporation
    Inventors: Lihua Zhu, Haihua Wu, Chung-Tao Chu, Richard Hua
  • Publication number: 20120147956
    Abstract: A method and an apparatus for performing multi-threaded video decoding are disclosed. The method takes use of a multi-threaded scheme to process an encoded picture stream on a picture by picture basis. In the method, multiple threads are used for performing video decoding at the same time, such as one thread for the operation of parsing input bits into syntax elements of one picture implemented by the first thread, another thread for the operation of decoding the parsed syntax elements of another picture into pixel values implemented by the second thread, and the other threads for the operations of the non-reference picture, such as bidirectional predictive picture, including parsing input bits into syntax elements and the subsequent operation of decoding the parsed syntax elements into pixel values. Therefore, the decoding speed is substantially increased, and the decoding efficiency is enhanced.
    Type: Application
    Filed: February 21, 2012
    Publication date: June 14, 2012
    Applicant: Corel Corporation
    Inventors: Ioannis Katsavounidis, Yu-Nien Chien, Chun-Huan Chuang, Chung-Tao Chu, Te-Chien Chen
  • Patent number: 8121196
    Abstract: A method and an apparatus for performing multi-threaded video decoding are disclosed. The method takes use of a multi-threaded scheme to process an encoded picture stream on a picture by picture basis. In the method, multiple threads are used for performing video decoding at the same time, such as one thread for the operation of parsing input bits into syntax elements of one picture implemented by the first thread, another thread for the operation of decoding the parsed syntax elements of another picture into pixel values implemented by the second thread, and the other threads for the operations of the non-reference picture, such as bidirectional predictive picture, including parsing input bits into syntax elements and the subsequent operation of decoding the parsed syntax elements into pixel values. Therefore, the decoding speed is substantially increased, and the decoding efficiency is enhanced.
    Type: Grant
    Filed: November 2, 2006
    Date of Patent: February 21, 2012
    Assignee: Corel Corporation
    Inventors: Ioannis Katsavounidis, Yu-Nien Chien, Chun-Huan Chuang, Chung-Tao Chu, Te-Chien Chen
  • Publication number: 20110188749
    Abstract: An image processing method for boundary resolution enhancement is disclosed. Firstly, an image is transferred into an image layer. Noise of the image layer is removed by a bilateral filter and crisp edges are retained at the same time. Moreover, the image layer is interpolated by an interpolation filter for resolution enhancement. The image processing method of the present invention can lower the image blur degree substantially, enhance the image resolution and be widely implemented in all sorts of image/video processing hardware devices.
    Type: Application
    Filed: March 26, 2010
    Publication date: August 4, 2011
    Inventors: Lihua ZHU, Haihua Wu, Chung-Tao Chu, Richard Hua
  • Patent number: 7483083
    Abstract: A method for enhancing video or other multimedia in order to achieve a closer-to-movie theater viewing experience. The enhancement method can be applied to YUV or other video formats which are used for TV or digital media. The method provides a curve with at least one inflection point such that at least one region has a concave upward arc and another region has a concave downward arc. The improved curve provides relatively less contrast in relatively dark regions and relatively more contrast in relatively bright regions. By taking into account the visual sensitivity to various luminance levels, a neutral point is selected to be located at a relatively dark point. To the darker side of the neutral point, luminance is suppressed. To the brighter side of the neutral point, luminance is enhanced. This luminance-mapping curve is applied to the luminance (Y) signal so as to enhance both brightness and contrast.
    Type: Grant
    Filed: April 13, 2004
    Date of Patent: January 27, 2009
    Assignee: Intervideo, Inc.
    Inventors: Wei Li, Chung-Tao Chu, Andy Chao Hung
  • Publication number: 20080107184
    Abstract: A method and an apparatus for performing multi-threaded video decoding are disclosed. The method takes use of a multi-threaded scheme to process an encoded picture stream on a picture by picture basis. In the method, multiple threads are used for performing video decoding at the same time, such as one thread for the operation of parsing input bits into syntax elements of one picture implemented by the first thread, another thread for the operation of decoding the parsed syntax elements of another picture into pixel values implemented by the second thread, and the other threads for the operations of the non-reference picture, such as bidirectional predictive picture, including parsing input bits into syntax elements and the subsequent operation of decoding the parsed syntax elements into pixel values. Therefore, the decoding speed is substantially increased, and the decoding efficiency is enhanced.
    Type: Application
    Filed: November 2, 2006
    Publication date: May 8, 2008
    Applicant: INTERVIDEO, INC.
    Inventors: Ioannis Katsavounidis, Yu-Nien Chien, Chun-Huan Chuang, Chung-Tao Chu, Te-Chien Chen
  • Patent number: 6850566
    Abstract: A system for improving the speed of the video encoding process by decreasing the number of cycles to perform the quantization. The disclosed system achieves the improvement through use of parallel processor such as one having a Single Instruction, Multiple Data (SIMD) architecture. Concurrent processing during one instruction cycle is accomplished, thereby leading overall to the use of fewer instruction cycles. In the preferred embodiment, an MMX instruction set is used for executing four quantization in parallel. The disclosed system also achieves a higher precision of the quantization during the encoding of video signals with the SIMD architecture by using a larger multiplier and larger shift factor.
    Type: Grant
    Filed: February 20, 2001
    Date of Patent: February 1, 2005
    Assignee: InterVideo, Inc.
    Inventors: Chung-Tao Chu, Wei Ding
  • Publication number: 20040207759
    Abstract: A method for enhancing video or other multimedia in order to achieve a closer-to-movie theater viewing experience. The enhancement method can be applied to YUV or other video formats which are used for TV or digital media. The method provides a curve with at least one inflection point such that at least one region has a concave upward arc and another region has a concave downward arc. The improved curve provides relatively less contrast in relatively dark regions and relatively more contrast in relatively bright regions. By taking into account the visual sensitivity to various luminance levels, a neutral point is selected to be located at a relatively dark point. To the darker side of the neutral point, luminance is suppressed. To the brighter side of the neutral point, luminance is enhanced. This luminance-mapping curve is applied to the luminance (Y) signal so as to enhance both brightness and contrast.
    Type: Application
    Filed: April 13, 2004
    Publication date: October 21, 2004
    Inventors: Wei Li, Chung-Tao Chu, Andy Chao Hung
  • Publication number: 20030067977
    Abstract: A system for improving the speed of the video encoding process by decreasing the number of cycles to perform the quantization. The disclosed system achieves the improvement through use of a parallel processor, such as one having a Single Instruction, Multiple Data (SIMD) architecture. Concurrent processing during one instruction cycle is accomplished, thereby leading overall to the use of fewer instruction cycles. In a preferred embodiment of the invention, an MMX instruction is used for executing four quantizations in parallel. The disclosed system also achieves a higher precision of the quantization during the encoding of video signals (60) with the SIMD architecture by using a larger multiplier and larger shift factor (50).
    Type: Application
    Filed: September 18, 2001
    Publication date: April 10, 2003
    Inventors: Chung-Tao Chu, Wei Ding
  • Patent number: 6320987
    Abstract: An apparatus for processing a video signal is described, comprising a means for receiving a nonreconstructed, video residue image, a means for selecting a first pixel to be processed, a means for selecting a second and third pixel, the second and third pixels being contiguous to said first pixel, and positioned right and left of the first pixel, a means for determining first, second, and third weighting factors for the first, second and third pixels respectively, a means for computing a first result by multiplying the first weighting factor with the value of said first pixel, a means for computing a second result by multiplying the second weighting factor with the value of the second pixel, a means for computing a third result by multiplying the third weighting factor with the value of the third pixel; and a means for computing a new value for said first pixel by adding the first, second and third results together.
    Type: Grant
    Filed: October 16, 1998
    Date of Patent: November 20, 2001
    Assignee: Neo Paradigm Labs, Inc.
    Inventor: Chung-Tao Chu