Patents by Inventor Hon-Wen Pon

Hon-Wen Pon 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: 8208537
    Abstract: A bit rate transcoding method includes: (a) receiving a motion vector of a current macroblock (MB); (b) retrieving an error count of a referenced previous MB for setting it as the error count of the current MB; (c) calculating a weight value; (d) calculating a new quantization parameter, and multiplying the same by the weight value so as to obtain a weighted new quantization parameter falling into a continuous distribution; (e) selectively using a transformation technique to transform the weighted new quantization parameter into one falling into a discrete distribution; (f) if the weighted new quantization parameter exhibits the continuous distribution, and if the weighted new quantization parameter is within a predetermined range, incrementing the error count by a predetermined value; and (g) if the weighted new quantization parameter exhibits the discrete distribution, and if the weighted new quantization parameter does not belong to a smallest quantization parameter cluster, incrementing the error count by
    Type: Grant
    Filed: January 24, 2007
    Date of Patent: June 26, 2012
    Assignee: Panasonic Corporation
    Inventors: Ju-Yun Cheng, Hon-Wen Pon, Wei-Fu Chen
  • Publication number: 20090010327
    Abstract: A bit rate transcoding method includes: (a) receiving a motion vector of a current macroblock (MB); (b) retrieving an error count of a referenced previous MB for setting it as the error count of the current MB; (c) calculating a weight value; (d) calculating a new quantization parameter, and multiplying the same by the weight value so as to obtain a weighted new quantization parameter falling into a continuous distribution; (e) selectively using a transformation technique to transform the weighted new quantization parameter into one falling into a discrete distribution; (f) if the weighted new quantization parameter exhibits the continuous distribution, and if the weighted new quantization parameter is within a predetermined range, incrementing the error count by a predetermined value; and (g) if the weighted new quantization parameter exhibits the discrete distribution, and if the weighted new quantization parameter does not belong to a smallest quantization parameter cluster, incrementing the error count by
    Type: Application
    Filed: January 24, 2007
    Publication date: January 8, 2009
    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    Inventors: Ju-Yun Cheng, Hon-Wen Pon, Wei-Fu Chen
  • Publication number: 20080260024
    Abstract: A method for selectively reducing quantization levels is adapted for use in a transcoder including a variable length decoding unit. The variable length decoding unit decodes a plurality of input variable length codes into a plurality of decoded pairs, wherein each decoded pair is a run-level pair. The method includes the following steps: (a) obtaining a plurality of absolute levels arranged in an order of scan positions according to the runs and levels of the decoded pairs; (b) determining whether a saved bit number correspondingly found by reducing each absolute level exceeds a bit number threshold value such that, if yes, the respective absolute level belongs to a target set; and (c) reducing each absolute level that belongs to the target set.
    Type: Application
    Filed: October 2, 2007
    Publication date: October 23, 2008
    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    Inventors: Wei-Fu CHEN, Hon-Wen PON, Ju-Yun CHENG, Takeshi TANAKA
  • Patent number: 6295072
    Abstract: A method and apparatus used to render cubic curves is disclosed. A cubic Bezier curve is rapidly decomposed into small segments piecewise by using two independent operation units in parallel for processing four control points of the cubic Beizer curve with the assistance of an arbitrator to display the cubic curve on a monitor or output to a printer. A set of control data of the cubic Beizer curve is obtained from an input device and serves as the original input data for a vertical division operation unit and a horizontal extension operation unit that generate four sets of control points in parallel. The arbitrator makes two decisions from the four sets of control points. First, if there are sets of control points meeting the condition of rendering the curve, those sets are transferred to a segment generator to generate points for rendering the curve. Second, it determines which set of control points is the next feedback input data for the parallel horizontal extension operation.
    Type: Grant
    Filed: September 21, 1998
    Date of Patent: September 25, 2001
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Hon-Wen Pon, Hsiao-Ching Wu