Patents by Inventor Yi M. G. G. Ang

Yi M. G. G. Ang 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).

  • Automatic frequency control in a radio communication receiver
    Patent number: 5457716
    Abstract: A selective call radio frequency (RF) communication device (105) includes a receiver (203) for receiving and converting an RF signal into a converted signal. A controller (206) generates binary message information, a synchronization command signal and an address detection signal. An alert device (207) indicates the receipt of the message information. A frequency counter (427) measures the frequency of the converted signal and also determines the associated binary state of the binary message information. A measurement memory (439) stores the converted signal frequency measurements. The frequency control generator (440) generates a frequency control signal in response to the synchronization command signal being generated. The frequency control signal is a function of the stored converted signal frequency measurements and the associated binary states.
    Type: Grant
    Filed: January 31, 1994
    Date of Patent: October 10, 1995
    Assignee: Motorola, Inc.
    Inventors: Yi M. G. G. Ang, Cheng H. Ho