Matsushita Electric Industrial Co., Ltd.

Masakazu Kashikawa

Hiroto Nishida

Takashi Suzuki

Akira Matsumoto

Isamu Nakade

Satoshi Kawata

Masataka Kaneda

Seiji Nakama

Yoshiaki Nakagawa

Hiroyuki Matsuda

Kenji Urushihara

Takanori Hayashi

Shoji Asakawa

Shunichi Iida

Herein disclosed is an optical disc driving apparatusfor driving an optical disc while reading out information contained in the optical disc, the optical disc having an outer peripheral surface, comprising: a housingformed with an loading slot having the optical disc passed therethrough; first detecting meansfor performing a detection of the outer peripheral surface of the optical disc to be moved into the housingand second detecting meansfor performing a detection of the outer peripheral surface of the optical disc to be moved into the housingafter the detection of the outer peripheral surface of the optical disc is performed by the first detecting meansand judging meansfor judging whether one optical disc or partially overlapped optical discs are passed through the loading slotof the housingbased on results detected by the first and second detecting meansand

Optical disk driving apparatus capable of detecting overlapped disc insertion

A disc changer apparatus includes a casing. A plurality of trays are contained in the casing for carrying discs respectively. The trays are held and arranged in a stack. A region between a designated one of the trays and a tray immediately above the designated tray is expanded. A disc on the designated tray is pushed. A drive mechanism moves a turntable into the expanded region to place the turntable below the pushed disc. The drive mechanism includes a shaft, a base plate supported within the casing via the shaft, a damper, and a chassis connected to the base plate via the damper and carrying the turntable.

Disc changer apparatus with vibration free turntable

A disc changer apparatus includes a casing. A plurality of trays are contained in the casing for carrying discs respectively. The trays are held and arranged in a stack. A region between a designated one of the trays and a tray immediately above the designated tray is expanded. A disc on the designated tray is pushed. A region between the designated tray and the disc on the designated tray is expanded after the disc on the designated tray is pushed. A drive mechanism moves a turntable into the expanded region between the designated tray and the disc on the designated tray to place the turntable below the pushed disc. The drive mechanism includes a shaft, a base plate supported within the casing via the shaft, a damper, and a chassis connected to the base plate via the damper and carrying the turntable.

A disc player device includes a tray transfer mechanism for transferring a tray, supporting a disc thereon, from a magazine, a clamper for holding the disc, and a clamper drive mechanism for transferring the clamper to a turntable. The disc is held by the turntable with the clamper transfer mechanism held out of contact with the clamper, and in this condition a playback of the disc is carried out. After the playback of the disc is finished, the disc is again clamped, and is returned to a predetermined position by the clamper transfer mechanism. The tray transfer mechanism, the clamper, the clamper drive mechanism are driven by a common motor.

Optical disc player device with a vibration prevention mechanism

The invention is intended to simplify the mechanism of a disk changer. The disk changer includes a magazine body accommodating a plurality of trays therein, a lock piece for locking the magazine inserted into a changer body, and a tray transferring device for transferring a tray from the magazine thus locked. The tray transferring device serves to unlock the lock piece.

Growing community of inventors

Kanagawa, Japan

Masakazu Kashikawa