Patents by Inventor Samuel Chin-Chong Tseng

Samuel Chin-Chong Tseng 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).

  • Optical digital to analog converter
    Patent number: 3985423
    Abstract: An optical digital to analog converter having a plurality of input channels, each having the presence or absence of light representing the respective ones or zeros of a digital code, each of the input channels being coupled to a channel consisting of cascaded magneto-optical mode converters, the number of cascaded elements being equal to the corresponding weighting value of the element of the code, and a common receptor to which the outputs of the cascades are coupled.
    Type: Grant
    Filed: December 31, 1974
    Date of Patent: October 12, 1976
    Assignee: International Business Machines Corporation
    Inventor: Samuel Chin-Chong Tseng