Matsushita Electric Industrial Co., Ltd.

Panasonic Corporation

Hirohisa Koizumi

Yuji Tanaka

Takehiko Ide

Shingo Sagata

Takeshi Watanabe

Yuichi Uchikawa

Hidehito Nakamura

Masanari Esaki

Hiroki Kokubu

Kazuo Matsumoto

Kiyoshi Takeuchi

Takeshi Sugimoto

Takashi Morishita

Fumihide Maeda

Masanobu Aramaki

Shinichi Tokumaru

Hidetaka Taguchi

Hisashi Arai

When the USB power supply (VBUS) of the USB interface is used as the power supply for driving a conventional optical disc apparatus or disc apparatus, the supplied current exceeds the standard of USB. An optical disc apparatus is provided with: a spindle motor for rotating and driving an optical disc; a feed motor for shifting an optical pick-up in the direction of the radius of an optical disc, the optical pick-up carrying out either read-out of data that has been written in onto an optical disc or write-in of data onto an optical disc; and an actuator for minutely correcting the position of an object lens which is provided in the above described optical pick-up and which irradiates an optical disc with a laser beam which is collected, wherein a conversion circuit for changing a signal voltage of a servo processor, which is transmitted to a driving circuit of the above described spindle motor, is placed between the above described driving circuit and the above described servo processor for controlling the above described driving circuit along a signal line, and the above described conversion circuit can be controlled by a CPU provided in the above described optical disc apparatus.

Optical disc apparatus and disc apparatus

The present invention includes a frame, an optical pick-up module fixed to the frame and a circuit board forming a control circuit fixed to the frame. The frame has fixing parts to other members.

Optical disc device having fixing parts for directly fixing a frame of the optical disk device to an electronic device

Growing community of inventors

Tamana, Japan

Hirohisa Koizumi