Minoru Ozaki, Kyosuke Yoshimoto, Hiroyuki Onda, Koji Yamana, Takuya Nagata, Hidehiko Murata, Yutaka Kobayashi: Method for rewriting defect management areas on optical disk according to ECMA standard. Mitsubishi Electric Corporation, Teac Corporation, Andrus Sceales Starke & Sawall, June 7, 1994: US05319626 (109 worldwide citation)

A method for rewriting four defect management areas on an optical disk according to an ECMA standard is performed by means of deleting an old data which has been recorded on the respective defect management areas and then sequentially writing down a new data on respective defect management areas.

Ryuichi Nakajima, Koji Yamana: Telephone system with multiple extension telephones. Tandy Corporation, Townsend and Townsend, February 18, 1992: US05090052 (87 worldwide citation)

An improved telephone system in which a plurality of telephone units connected to a common telephone line is directly connected to an outside telephone line. Each telephone unit contains complete capability for making outside calls, for making extension calls, and for the automatic exchange control ...

Hideaki Ishida, Tomohisa Ishikawa, Koji Yamana, Takehiko Kayahara: Electronic musical instrument. Casio Computer, Frishauf Holtz Goodman and Woodward, March 20, 1984: US04437378 (33 worldwide citation)

Bar code data are read out by a bar code reader from a medium on which predetermined tone data are printed in the form of bar codes and are successively stored in a RAM. When a mode selection switch is set to a position "NAVI", a LED provided in the vicinity of a performance key corresponding to the ...

Osamu Ito, Kyosuke Yoshimoto, Yoshihiro Kiyose, Kazuhiko Nakane, Akira Mashimo, Hiroyuki Onda, Koji Yamana, Takuya Nagata: Optical disk storage which provides pull-in of focus servo and pull-in of tracking servo. Mitsubishi Electric Corporation, Teac Corporation, Andrus Sceales Starke & Sawall, August 1, 1995: US05438557 (3 worldwide citation)

A miniaturized optical disk apparatus which performs a pull-in of a focus servo and a pull-in of a tracking servo without a position detector for detecting an optical head. If the optical head is located at a non-reflection film area and thus the focus servo cannot be performed, then the optical hea ...

Kyosuke Yoshimoto, Yoshiki Nakajima, Kimiyuki Koyanagi, Osamu Ito, Akira Mashimo, Hiroyuki Onda, Yutaka Kobayashi, Koji Yamana: Track jump control means for a disk apparatus. Mitsubishi Electric Corporation, Teac Corporation, Andrus Sceales Starke & Sawall, January 2, 1996: US05481517 (3 worldwide citation)

The disk drive apparatus of the present invention has an optical pickup that jumps a track to perform track jumping when a jumping voltage is impressed, and that traces a track by performing brake operation when a braking voltage is applied, and actuator that drives the optical pickup, a signal proc ...