Patents Assigned to Clarion Co., Inc.
  • Patent number: 4369462
    Abstract: A coding system for use in a television system wherein at least a part of a television signal is inverted by an encoder at a broadcasting station, according to a code signal and the coded television signal is decoded by decoders of specific subscribers to be reproduced on TV sets. The coding system is comprised of a clock oscillation means, a mode generating means for generating signals indicating plural inversion modes, a counter for counting clock signals from the clock oscillation means, a setting means for outputting a predetermined signal based on addresses provided corresponding to the respective inversion modes of the mode generating means and determined by an output from the counter, and a means for inserting the code signal during a vertical blanking period of the television signal. When the output signal of the mode generating means and the output signal of the setting means are in a given relation, the count value of the counter is used as the code signal.
    Type: Grant
    Filed: August 15, 1980
    Date of Patent: January 18, 1983
    Assignee: Clarion Co., Inc.
    Inventors: Akimori Tomizawa, Hiroshi Osaka, Ryokichi Kanai