Patents by Inventor Albert Y. Chan

Albert Y. Chan 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).

  • Apparatus for enhancing the playback signal in an optical data recording system
    Patent number: 4549288
    Abstract: Optical data recording apparatus which enhances a playback signal by comparing the lengths of the lands on a recording medium with the lengths of the pits on it and changes the playback signal to represent equality between such lengths.
    Type: Grant
    Filed: December 20, 1982
    Date of Patent: October 22, 1985
    Assignee: North American Philips Corporation
    Inventor: Albert Y. Chan