Patents by Inventor Kh Chiu

Kh Chiu 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).

  • Integrated circuit for recording and playback of such recording
    Patent number: 4266254
    Abstract: This disclosure describes a recorder/playback system which utilizes a silicon chip having bipolar transistors. One feature is an integral electronic switching arrangement which permits silent and smooth change from the record to the playback mode and vice versa by operation of an external single pole switch. Other features include a circuit for driving a recording level meter, an automatic audio level control circuit (ALC) and integral voltage and current regulators.
    Type: Grant
    Filed: May 7, 1979
    Date of Patent: May 5, 1981
    Assignee: National Semiconductor Corp.
    Inventors: Stephen W. Hobrecht, Henry M. Skawinski, Kh Chiu, Wong Hee