The development of digital servo algorithms for optical disc players

Author

Uekawa, Yutaka ; Kubo, Junichi ; Kono, Kazuhiko ; Iida, Michihisa ; Koyama, Kenichi ; Nakamura, Masayoshi

Author_Institution

Matsushita Electric Ind. Co. Ltd., Osaka, Japan

Volume

36

Issue

3

fYear

1990

fDate

8/1/1990 12:00:00 AM

Firstpage

567

Lastpage

571

Abstract

A kick algorithm for tracking control and an automatic gain adjustment algorithm have been developed for optical disc players. The kick algorithm showed precise accessibility, which will lead to fewer access trials. As a consequence, faster access can be expected. Experimental results on the automatic gain adjustment system showed that the gain error at gain-crossover frequency was within ±1 dB, and the adjusting time was 0.2 second on the average. This system has the possibility of optimal adjustment for each disc. These functions can easily be implemented in the digital servo system by the use of LSIs

Keywords

optical disc storage; servomechanisms; telecommunications control; video equipment; 0.2 s; adjusting time; automatic gain adjustment algorithm; digital servo algorithms; gain error; gain-crossover frequency; kick algorithm; optical disc players; tracking control; Acceleration; Actuators; Automatic control; Digital filters; Optical control; Optical filters; Optical modulation; Pulse width modulation; Servomechanisms; Target tracking;

fLanguage

English

Journal_Title

Consumer Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0098-3063

Type

jour

DOI

10.1109/30.103175

Filename

103175