1
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 ...


2
Yoshifumi Saeki, Kenji Yashiro: CATV System. Pioneer Electronic Corporation, Sughrue Mion Zinn Macpeak and Seas, June 19, 1984: US04455570 (155 worldwide citation)

In a cable television system wherein a polling channel is provided for two-way communications between the center and the terminal units, video data signals are transmitted on request from the center to the terminal units during an otherwise idle period in said polling channel.


3
Yoshifumi Saeki, Kazuyoshi Onda: Television signal scrambling method for CATV system. Pioneer Electronic Corporation, Sughrue Mion Zinn Macpeak and Seas, March 30, 1982: US04322745 (126 worldwide citation)

A television signal scrambling and descrambling method and apparatus for use with a community antenna television system in which the scrambling mode employed is changed from time to time so that one cannot illegally receive the transmitted signals over a long period of time if only one of the scramb ...


4
Yoshifumi Saeki, Shigeru Watanabe, Ryuichi Todoroki: Method for developing a key signal for descrambling in television broadcasting. Pioneer Electronic Corporation, Sughrue Mion Zinn Macpeak and Seas, December 27, 1988: US04794643 (41 worldwide citation)

A scrambling method for TV pictures avoids deterioration of the reproduced picture by level compressing only selected horizontal flyback portions according to a randomly selected pattern to prevent synchronization at the receiver. Key signals are added repetitively to a plurality of horizontal synch ...


5
Shigeyoshi Iwamoto, Yoshifumi Saeki, Takashi Kuribayashi, Shinichiro Ishitsuka, Nobukuni Ogino: Mounting arrangement for electronic components. Matsushita Electric Industrial, Cushman Darby & Cushman, May 27, 1986: US04591951 (21 worldwide citation)

An electronic component contained in a metal case is attached with an insulation mold at a sealing part and lead wires of the electronic component element are passing through holes on the insulator base, and the end parts of the lead wires are bent in recesses on the insulator base, thereby constitu ...


6
Yoshifumi Saeki, Hiroki Uemura: Video scrambler and descrambler apparatus. Pioneer Electronic Corporation, Fraser and Bogucki, December 20, 1977: US04064536 (15 worldwide citation)

Video signals for television are effectively scrambled and may later be descrambled without the presence of annoying visual disturbances by the introduction of a superposed distorted sine wave in synchronism with the horizontal synchronizing signal, in a "gray sync" mode of operation. Thereafter, th ...


7
Hiroki Uemura, Yoshifumi Saeki: Descrambling device in CATV system. Pioneer Electronic Corporation, Fraser and Bogucki, March 20, 1979: US04145716 (13 worldwide citation)

A descrambler system for a CATV television signal having IF audio, video and synchronizing components that is scrambled by a first amplitude modulation of the IF audio component and a second amplitude modulation of the combined audio, visual and synchronizing components by a key signal having a freq ...


8
Yoshifumi Saeki, Shigeru Watanabe: Scrambling method for TV picture. Pioneer Electronic Corporation, Sughrue Mion Zinn Macpeak & Seas, October 9, 1990: US04962529 (5 worldwide citation)

A scrambling method for TV pictures avoids picture deterioration by level compressing only selected horizontal flyback portions of the video signal to effect scrambling. A key signal is superposed on selected horizontal synch signals and, when removed at the decoder, enables level expansion of those ...


9
Kenji Yashiro, Yoshifumi Saeki: Device for sensing the operative status of electrical equipment. Pioneer Electronic Corporation, Fraser and Bogucki, August 30, 1977: US04045732 (5 worldwide citation)

The operative status of an electrical apparatus unit such as a television receiver, incorporating an AC-DC converter, and drawing a substantial amount of current is sensed while differentiating from the usage of a lower amount of current, as when operating in a standby mode. The sensor distinguishes ...


10
Daiichi Suzuki, Yoshifumi Saeki, Yukio Tanaka, Noboru Kunimatsu, Hidehiro Sonoda, Masahiro Kosuge: Liquid crystal display device. Japan Display, Oblon McClelland Maier & Neustadt L, July 24, 2018: US10031382

According to one embodiment, a liquid crystal display device includes a liquid crystal display panel which includes a pixel electrode, a liquid crystal layer and an alignment film, and a driver. The driver drives the pixel electrode at a drive frequency of 1 to 20 Hz. The alignment film has a resist ...