Optical disk memory and information processing apparatus

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United States of America Patent

PATENT NO 5475656
SERIAL NO

07755179

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Abstract

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The information processor uses a portable memory formed on a transparent substrate which is able to be overwritten by laser power modulation system. The memory includes a disk type recording medium rotatably incorporated within a thin case, and carries out write/read/erase by means of a first magnetic field application device, a second magnetic field application device, and an optical head radiating light through the case which has at least a transparent light-incident portion. The case includes therein a rotation means for rotating the recording medium within the case, thereby enabling even further reduction in size of the information processor.

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Patent Owner(s)

Patent OwnerAddress
HITACHI LTD A CORP OF JAPAN6 KANDA SURUGADAI 4-CHOME CHIYODA-KU TOKYO

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Andoh, Hisashi Hitachi, JP 17 248
Ikuta, Isao Iwaki, JP 29 485
Kato, Yoshimi Takahagi, JP 7 84
Maeda, Yoshihito Mito, JP 13 197
Minemura, Hiroyuki Hitachi, JP 248 2317
Nagai, Masaichi Hitachi, JP 13 207
Sato, Yoshio Hitachi, JP 109 1496
Sugita, Tatsuya Hitachi, JP 67 1193
Sugita, Yutaka Tokorozawa, JP 64 492
Tsuboi, Nobuyoshi Ibaraki, JP 22 559

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