Patents by Inventor Ryokichi Kanai

Ryokichi Kanai 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).

  • Patent number: 4463376
    Abstract: A television signal processing system characterized in that a level of at least a portion of a blanking interval of a coded television signal is shifted towards a white level and falling of the level shifting interval is shaped into a smooth waveform.
    Type: Grant
    Filed: July 21, 1983
    Date of Patent: July 31, 1984
    Assignee: Clarion Co., Ltd.
    Inventors: Hiroshi Osaka, Akira Honma, Ryokichi Kanai
  • Patent number: 4429331
    Abstract: A video cipher processing system comprising a detecting means for detecting average tone variation of TV video signals, an extracting means for extracting at random at least some of outputs from the detecting means as a result of the detection and a ciphering means for ciphering video signals by inverting or non-inverting polarities of video signals in response to outputs extracted at random by the extracting means.
    Type: Grant
    Filed: July 27, 1981
    Date of Patent: January 31, 1984
    Assignee: Clarion Co., Ltd.
    Inventor: Ryokichi Kanai
  • 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