Patents by Inventor Pin-Seng Tschang

Pin-Seng Tschang 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: 4458989
    Abstract: Electro-optic addressing using an electro-optic modulator with improved electrode configuration and improved address control. During a first address stage activating and inactivating reference potentials are applied respectively to first and second of adjacent pixel portions of the modulator while an addressing signal potential (e.g. in accord with image data) is applied to both pixel portions. During a second address stage activating and inactivating reference potentials are applied respectively to the second and first pixel portions while signal potential is applied to both pixel portions.
    Type: Grant
    Filed: June 16, 1982
    Date of Patent: July 10, 1984
    Assignee: Eastman Kodak Company
    Inventor: Pin-Seng Tschang
  • Patent number: 4449153
    Abstract: In electronic imaging of the kind wherein light is directed uniformly onto a linear light valve array, which includes pixel portions selectively activated to block or transmit the light during successive line address periods, improved gray scale imaging is provided by modulating, during each line address period, the intensity of the light which passes to the light valve array.
    Type: Grant
    Filed: June 16, 1982
    Date of Patent: May 15, 1984
    Assignee: Eastman Kodak Company
    Inventor: Pin-Seng Tschang