Patents by Inventor Wei-Che Chang

Wei-Che Chang 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: 7580590
    Abstract: An optical image system surface resolution calibration method is provided herein, which utilizes a calibration standard and an image sensor device. The surface of the calibration standard is provided with a plurality of interleaving bright lines and dark lines, the calibration standard is disposed in a plane to be measured, and the image sensor device is provided with an imaging means, a memory means, and a logic-arithmetic means, that is used to fetch the image information of the calibration standard and store the image information thus obtained. Meanwhile, the image sensor device is used to select and calculate the linear equations of the bright lines, and finally calculate the magnification factor of the image fetched by the image sensor device through the geometric mathematical means by making use of the slope and intersection distance of the linear equation and the average distance between the adjacent bright lines calculated from the intersection distance.
    Type: Grant
    Filed: March 8, 2006
    Date of Patent: August 25, 2009
    Assignee: Chroma Ate Inc.
    Inventors: Yao-Min Lin, Wei-Che Chang, Huang-Chang Chang
  • Publication number: 20090116667
    Abstract: A method and an apparatus for adjusting volume are provided. A determining module receives a sound input signal, wherein the sound input signal is connected to a plurality of sound input sources and corresponds to one of the said sound input sources, the determining module further determines the corresponding sound input source of the sound input signal is different; a storing module stores a plurality of sound output records; a first calculating module calculates a sound output signal according to the sound input signal and the sound output records.
    Type: Application
    Filed: December 13, 2007
    Publication date: May 7, 2009
    Applicant: AVERMEDIA TECHNOLOGIES, INC.
    Inventors: Yung-Da Lin, Wei-Che Chang
  • Patent number: 7423764
    Abstract: An integrated interference scanning method, mainly used to integrate the respective advantages of VSI and PSI measurements, hereby achieving the characteristic of high precision and limitless measurement range. In particular, the slope correction factor and the displacement correction factor between the VSI measurement and PSI measurement may be utilized to execute the integration calculation of the height data arrays of the VSI and PSI, so that the scanning procedure may be achieved through merely using the wideband light source of the interference scanning system, as such reducing the errors and complexity of the interference scanning system.
    Type: Grant
    Filed: March 13, 2006
    Date of Patent: September 9, 2008
    Assignee: Chroma Ate Inc.
    Inventors: Chieh-Cheng Liao, Yao-Min Lin, Huang-Chang Chang, Wei-Che Chang
  • Publication number: 20070127036
    Abstract: An interference measurement system self-alignment method, which can be realized through an optical image interference measurement system. The method comprises the following steps of: utilizing the imaging device to get the optical information of the object to be measured and store the optical information thus obtained; performing the inclination adjustment of the first direction rotation axis of the object platform based on the direction of the interference fringe in the optical information until the interference fringes are adjusted to a defined orthogonal direction, thus eliminating the inclination of the first direction rotation axis; and performing the inclination adjustment of the second direction rotation axis of the object platform based on the expansion direction of the interference fringe in the optical information until the spacing of the interference fringes are adjusted to the maximum, thus eliminating the inclination of the second direction rotation axis.
    Type: Application
    Filed: December 7, 2005
    Publication date: June 7, 2007
    Applicant: Chroma Ate Inc.
    Inventors: Chien-Chong Liao, Yao-Min Lin, Huang-Chang Chang, Wei-Che Chang
  • Publication number: 20070097379
    Abstract: An integrated interference scanning method, mainly used to integrate the respective advantages of VSI and PSI measurements, hereby achieving the characteristic of high precision and limitless measurement range. In particular, the slope correction factor and the displacement correction factor between the VSI measurement and PSI measurement may be utilized to execute the integration calculation of the height data arrays of the VSI and PSI, so that the scanning procedure may be achieved through merely using the wideband light source of the interference scanning system, as such reducing the errors and complexity of the interference scanning system.
    Type: Application
    Filed: March 13, 2006
    Publication date: May 3, 2007
    Inventors: Chieh-Cheng Liao, Yao-Min Lin, Huang-Chang Chang, Wei-Che Chang
  • Publication number: 20070076170
    Abstract: An optical image system surface resolution calibration method is provided herein, which utilizes a calibration standard and an image sensor device. The surface of the calibration standard is provided with a plurality of interleaving bright lines and dark lines, the calibration standard is disposed in a plane to be measured, and the image sensor device is provided with an imaging means, a memory means, and a logic-arithmetic means, that is used to fetch the image information of the calibration standard and store the image information thus obtained. Meanwhile, the image sensor device is used to select and calculate the linear equations of the bright lines, and finally calculate the magnification factor of the image fetched by the image sensor device through the geometric mathematical means by making use of the slope and intersection distance of the linear equation and the average distance between the adjacent bright lines calculated from the intersection distance.
    Type: Application
    Filed: March 8, 2006
    Publication date: April 5, 2007
    Inventors: Yao-Min Lin, Wei-Che Chang, Huang-Chang Chang