Optical disk device and equalizer adjustment method

Patent metadata

Field	Value
Publication number	US-9013971-B2
Application number	US-201414170864-A
Country	US
Kind code	B2
Filing date	Feb 3, 2014
Priority date	Feb 20, 2013
Publication date	Apr 21, 2015
Grant date	Apr 21, 2015

Abstract

An optical disk device includes an optical pickup that directs light beams onto a recording surface of an optical disk and receives reflected light, a signal generating unit that generates playback signals based on reflected light received by the optical pickup, an equalizer adjustment unit that performs equalizer adjustment of the playback signals, and an adjustment control unit. The adjustment control unit controls the equalizer adjustment unit so as to perform equalizer adjustment of the playback signals according to the playback signals based on reflected light from a management information area on a recording surface of the optical disk, the management information area including predetermined management information recorded thereon.

First claim

What is claimed is:

1. An optical disk device comprising:
an optical pickup arranged to direct light beams onto a recording surface of an optical disk and receive reflected light;
a signal generating unit arranged to generate playback signals based on received reflected light;
an equalizer adjustment unit arranged to perform equalizer adjustment of the playback signals to boost a low level frequency component and to cut a frequency component which is above a certain frequency;…

Assignees

• Funai Electric Co

Inventors

• Takeda Futoshi

Classifications

• G11B7/005 Primary

  Physics · mapped topic

• G11B20/10046 Primary

  Physics · mapped topic