Patents Examined by Marlanne Huseman
  • Decision directed gain control
    Patent number: 4905255
    Abstract: In a receiver for receiving and decoding a baseband multilevel signal into a digital data signal, and A/D converter produces in addition to the decoded data bits a "soft" bit, which inherently indicates the error polarity of the baseband signal. The soft bits are binary added to the most significant data bits to produce a sum bit. The sum bits are integrated, and the integral is used in a feedback loop to control the baseband signal amplitiude.
    Type: Grant
    Filed: January 3, 1989
    Date of Patent: February 27, 1990
    Assignees: American Telephone and Telegraph Company, AT&T Bell Laboratories
    Inventor: Farajollah Aalaei