Patents by Inventor Marc C. Gleichert

Marc C. Gleichert 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).

  • Method and apparatus for transmitting and receiving both 8B/10B code and 10B/12B code in a switchable 8B/10B transmitter and receiver
    Patent number: 5387911
    Abstract: A method and apparatus for using a modified 8B/10B system for transmitting 10 bit wide data packets in 12 bit code in which 5B/6B encoder/decoders separate the 10 bit wide data into two 5 bit nibbles. Unique special codes are provided which are not capable of aliasing with other 12 bit code words to provide reliable byte boundaries.
    Type: Grant
    Filed: February 21, 1992
    Date of Patent: February 7, 1995
    Inventors: Marc C. Gleichert, Arthur Hsu, Yun-Che Wang
  • Method and apparatus for synchronizing transmitter and receiver for high speed data communication
    Patent number: 5347547
    Abstract: A method and apparatus for improving the reliability of resynchronization in a serial frame based protocol communication system which can avoid resynchronization when line loss erroneously causes data to appear as a redundant unique code pattern. The synchronization is only initiated if two such unique code pattern bytes are received within a specified time separation.
    Type: Grant
    Filed: February 21, 1992
    Date of Patent: September 13, 1994
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Marc C. Gleichert, Yun-Che Wang
  • Variable pulse width phase detector
    Patent number: 5250913
    Abstract: A phase detector (1) for a phase locked loop (PLL) for bit clock retrieval where the phase detector employs a plurality of variable unit delays (20,21) and has a constant gain region that is a percentage of the clock period over an extended frequency range of the VCO enabling a single (PLL) chip to operate for several applications at widely different frequencies.
    Type: Grant
    Filed: February 21, 1992
    Date of Patent: October 5, 1993
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Marc C. Gleichert, Thomas Korn