Patents by Inventor Kuo-Ping Hsu

Kuo-Ping Hsu 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: 7254176
    Abstract: An apparatus for variable bit rate control in moving picture compression. First, a total activity measure for the current picture to be encoded in a set of consecutive pictures is calculated. Based on the total activity measure of the current picture and an activity-to-complexity ratio of a previously encoded picture of the same type in the set of consecutive pictures, a complexity measure of the current picture is estimated. A statistical complexity measure is then calculated from the complexity measure of the current picture. A target bit budget is allocated to the current picture depending on the instantaneous rate, the complexity measure and the instantaneous complexity measure. After encoding the current picture, the activity-to-complexity ratio for the current picture is computed based on the total activity measure, actual bits consumed by the current picture and an average of actual quantization step sizes used to encode the current picture.
    Type: Grant
    Filed: May 23, 2003
    Date of Patent: August 7, 2007
    Assignee: Silicon Integrated Systems Corp.
    Inventors: Yung-Ching Chang, Jo-Tan Yao, Kuo-Ping Hsu
  • Patent number: 7133448
    Abstract: A total activity measure for a current picture to be encoded in a set of consecutive pictures of a video sequence is calculated first. Based on the total activity measure of the current picture and an activity-to-complexity ratio of a previously encoded picture of the same type in the set of consecutive pictures, a complexity measure of the current picture is estimated. With the estimated complexity measure of the current picture, an instantaneous complexity measure for the set of consecutive pictures is updated. A target bit budget is allocated to the current picture depending on the estimated complexity measure and the instantaneous complexity measure. The current picture is encoded according to the target bit budget, and the activity-to-complexity ratio for the current picture is computed based on the total activity, actual bits consumed by the current picture, and the average quantization step size of the current picture.
    Type: Grant
    Filed: November 7, 2002
    Date of Patent: November 7, 2006
    Assignee: Silicon Integrated Systems Corp.
    Inventors: Yung-Ching Chang, Jo-Tan Yao, Kuo-Ping Hsu
  • Publication number: 20050207676
    Abstract: A method for decimating a first image data filtered by a Bayer pattern color filter array. The first image data includes a plurality of patterns arrayed in a matrix. Each pattern includes a first color pixel. The method includes providing first color pixel weighting values of the plurality of patterns of the first image data, and summing up the first color pixel weighting values to generate a first color pixel of a second image data decimated from the first image data.
    Type: Application
    Filed: March 16, 2004
    Publication date: September 22, 2005
    Inventors: Wen-Kuo Lin, Kuo-Ping HSU
  • Publication number: 20040233984
    Abstract: An apparatus for variable bit rate control in moving picture compression. First, a total activity measure for the current picture to be encoded in a set of consecutive pictures is calculated. Based on the total activity measure of the current picture and an activity-to-complexity ratio of a previously encoded picture of the same type in the set of consecutive pictures, a complexity measure of the current picture is estimated. A statistical complexity measure is then calculated from the complexity measure of the current picture. A target bit budget is allocated to the current picture depending on the instantaneous rate, the complexity measure and the instantaneous complexity measure. After encoding the current picture, the activity-to-complexity ratio for the current picture is computed based on the total activity measure, actual bits consumed by the current picture and an average of actual quantization step sizes used to encode the current picture.
    Type: Application
    Filed: May 23, 2003
    Publication date: November 25, 2004
    Inventors: Yung-Ching Chang, Jo-Tan Yao, Kuo-Ping Hsu
  • Publication number: 20040091045
    Abstract: A method and apparatus for rate control in moving picture video compression. According to the present invention, a total activity measure for a current picture to be encoded in a set of consecutive pictures of a video sequence is calculated first. Based on the total activity measure of the current picture and an activity-to-complexity ratio of a previously encoded picture of the same type in the set of consecutive pictures, a complexity measure of the current picture is estimated. A target bit budget is allocated to the current picture depending on the estimated complexity measure of the current picture. Then, the current picture is encoded according to the target bit budget. After encoding the current picture, the activity-to-complexity ratio for the current picture is computed based on the total activity, actual bits consumed by the current picture, and the average quantization step size of the current picture.
    Type: Application
    Filed: November 7, 2002
    Publication date: May 13, 2004
    Inventors: Yung-Ching Chang, Jo-Tan Yao, Kuo-Ping Hsu