Patents Examined by Victor R. Kustak
  • System and method for extracting caption teletext information from a video signal
    Patent number: 5657088
    Abstract: A clocking circuit for extracting data from a video signal where the data is imbedded with other data and where the clocking rate for obtaining the data is slow as compared to the actual data rate. The circuit derives a calculated starting point for the data, using a double sample rate and a derivative to determine the beginning of the first data pulse. A clock signal is then derived which is calculated to between the leading and trailing edges of any received data pulse.
    Type: Grant
    Filed: December 22, 1995
    Date of Patent: August 12, 1997
    Assignee: Cirrus Logic, Inc.
    Inventor: Robert J. Hankinson
  • Read start pulse generator for time base corrector
    Patent number: 4714954
    Abstract: A read start pulse generator comprises circuit elements for automatically adjusting the phase of a read start pulse signal by cancelling phase offset caused when phase adjustments are made to a synchronizing signal, burst signal, and hue signal.
    Type: Grant
    Filed: February 5, 1986
    Date of Patent: December 22, 1987
    Assignee: Sony Corporation
    Inventors: Tadaaki Yoshinaka, Takao Inoue