公开(公告)号：US20190206438A1

公开(公告)日：2019-07-04

申请号：US16325334

申请日：2018-02-07

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Yuuichi KUZE ,  Masatoshi YAJIMA ,  Shinichi KONISHI ,  Akihiko NISHIOKA

IPC: G11B19/28 ,  G11B20/10 ,  G11B7/005 ,  G11B19/04

CPC classification number: G11B19/28 ,  G11B7/004 ,  G11B7/005 ,  G11B19/04 ,  G11B20/10

Abstract: An optical disc drive device includes a spindle motor that rotates an optical disc, an OPU, a first controller that causes the spindle motor and the OPU to read recorded data from the rotating optical disc, and an transmitter that transmits the read recorded data to a signal processing device disposed external to the optical disc drive device. The recorded data transmitted by transmitter is stored in a buffer provided in the signal processing device. The first controller decreases the rotational speed of the optical disc based on free space information indicating the free space of the buffer.