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Toshio Koyama

Sony Broadcast & Professional Research Laboratories

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Publication

Featured researches published by Toshio Koyama.

Archive | 1997

Electronic apparatus having the function of displaying the battery residual quantity and method for displaying the battery residual quantity

Yoshinari Higuchi; Toshio Koyama; Naoki Nagano; Yoichi Tsusue

Archive | 1997

Battery charging device, method for charging battery pack and battery pack

Naoki Nagano; Toshio Koyama

Archive | 1997

Backlighting and color control arrangement for LCD type video camera viewfinder having multiple backlighting sources

Toshiaki Ueda; Katsuhiko Ueno; Yoshihiro Ono; Toshio Koyama

Archive | 1995

Electronic viewfinder having means for turning off a display device

Hiroshi Hiraki; Toshio Koyama; Yoshihiro Ono; Katsuhiko Ueno; Satoshi Shinagawa-ku Kimura

Archive | 1993

Charging battery system for video camera

Toshio Koyama; Hiroyuki Arakawa

Archive | 1998

Battery charging device, method for charging battery pack by switching between maximum charging voltage and maximum charging current

Naoki Nagano; Toshio Koyama

Archive | 1997

Battery packs and charging thereof

Toshio Koyama; Naoki Nagano

Archive | 1999

Battery charge controlled as function of operating mode

Naoki Nagano; Toshio Koyama

Archive | 1997

Electronic equipment with residual battery quantity display function and methods of displaying the residual battery quantity

Yoshinari Higuchi; Toshio Koyama; Naoki Nagano; Yoichi Tsusue

Archive | 1991

Video camera with electronic viewfinder

Toshio Koyama; Michiko Mochizuki; Kayano Hashimoto; Satoshi Yamamoto

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