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Katsuaki Matsumoto, Yoshifumi Saeki, Osamu Tazawa, Minoru Kosaka, Masaki Saito, Hiroki Uemura, Tetuo Kanazashi, Seiji Hashimoto, Tsuyoshi Fujiwara, Tsutomu Fukui, Saburo Takaoka, Tsutomu Suzuki, Shozo Nakamuta, Toshihiko Hosaka, Kuniaki Shiratori, Youichiro Tsuda, Takashi Morii, Sumitaka Matsumura, Morihisa Oka: Interactive CATV system. Pioneer Electronic Corporation, Fraser and Bogucki, January 13, 1981: US04245245 (278 worldwide citation)

A two-way CATV system having a substantial number of terminals incorporates a central processor and transmitter system which continually interrogates the terminals at high speed, monitoring changes of usage of premium programs and other data while also permitting central control of access to restric ...


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Shozo Nakamuta: Method for recording information on a recording disc. Pioneer Video Corporation, Fleit Jacobson Cohn & Price, October 29, 1985: US04550347 (17 worldwide citation)

In order to eliminate crosstalk and to provide a high recording density, a method for recording information on a recording disc includes a first step for forming a first portion of recording tracks in which the information signal is recorded on the recording disc under a condition that the angular v ...


3
Shozo Nakamuta: Time base correcting device for audio and video signals. Pioneer Video Corporation, Sughrue Mion Zinn Macpeak & Seas, July 17, 1984: US04460926 (6 worldwide citation)

A time base correction device for use with a video disc reproduction system corrects the time base of the color video signal according to the phase difference between a reference signal and a color burst signal; and the time base of the audio signal is corrected according to the phase difference bet ...