Alps Electric Co., Ltd.

Shoichiro Saito

Isao Asano

Toru Kowaguchi

Tatsumaro Yamashita

Motohiro Shimaoka

Kenji Abe

Hiroshi Yoshida

Mikio Oka

Tooru Kaneko

Tetsuya Mitsuishi

Yasuyuki Hirose

Since disks of the same type are loaded in a disk device using a conventional disk changer scheme, the disk device is not versatile as a peripheral device of a computer. ROM disks and RAM disks are mixed and stored in a magazine, and this magazine is loaded in the disk device. In the disk device, a tray is identified in step by a detector arranged on the tray to check whether the tray be a ROM disk or a RAM disk. Thereafter, discrimination information is recorded, together with the contents information, on an IC memory arranged on the magazine in step. Thereafter, when the magazine is loaded again, the discrimination information is read from the IC memory, and an operation corresponding to each disk is performed.

Optical disk discriminating method, including memory storage, for

A magnetic recording/reproducing apparatus including a detecting member which is operated to rotate a drive source disposed in a housing, and a slidable operating member for operating the detecting member. By simply pressing an indicator portion of the operating member with a small force from the front face side of the housing, the cartridge 4 is easily ejected by electrical power as a result of rotation of the drive source. In conventional magnetic recording/reproducing apparatuses, when the cartridge, loaded in the apparatus, is ejected therefrom, the back end of the cartridge must be firmly gripped to pull it out. Therefore, more force is required to pull out the cartridge than is required to insert it, making it very difficult to pull out the cartridge. The magnetic recording/reproducing apparatus of the invention overcomes this problem.

Magnetic recording/reproducing apparatus

An information recording disk driving device includes an information recording disk having servo tracks formed at predetermined regions which include servo information. The driving device is configured to move a head assembly from a recording track for signal writing or reading to an associated one of the servo tracks in response to a servo information supplied at a predetermined time. An instruction from a controller or an instruction from a host computer to read the servo information from the servo track subsequently place the head assembly at the fine track position of the original recording track according to the detected servo information.

Method of controlling a disk head position by individually timing zones

A disc drive apparatus for use in recording data on a flexible magnetic disc and/or reproducing data recorded on such a disc, has small dimensions and is capable of being manufactured at a low cost. This apparatus includes structures for preventing a disc and the read/write head from colliding when the disc is inserted into the apparatus. In addition, the apparatus permits two discs to be rotated simultaneously by one drive motor and one carriage carrying two head mechanisms is moved by one step motor.

Drive apparatus for flexible magnetic discs

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Miyagi-ken, Japan

Shoichiro Saito