Servo system control in digital video disc (DVD)

Author

Zhu, S.M. ; Choo, Fook Hoong ; Low, Kay Soon ; Chan, C.W.

Author_Institution

Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ.

fYear

1997

fDate

2-4 Dec 1997

Firstpage

114

Lastpage

117

Abstract

The storage capacity of a DVD is at least 8 times that of a compact disc (CD) with the same disc size. However, the higher density has led to narrower tracks and pitches (distances between tracks). This requires an improvement of the follow-up capability within limits which are not detrimental to its stability and speed of the system. In this paper, some techniques pertaining to the DVD servo control system, which are critical but not identical to the CD-ROM system are reviewed and investigated. These include the one-beam push-pull tracking method used in tracking error generation, adaptive learning control algorithm for DVD pickup spindle motor tracking, and variable speed control of the turntable brushless DC motor

Keywords

DC motor drives; adaptive control; angular velocity control; brushless DC motors; pick-ups; servomotors; variable speed drives; video discs; DVD pickup spindle motor tracking; adaptive learning control algorithm; digital video disc; follow-up capability; one-beam push-pull tracking method; servo system control; tracking error generation; turntable brushless DC motor; variable speed control; Brushless DC motors; CD-ROMs; Control systems; DC generators; DVD; Digital control; Error correction; Servomechanisms; Servosystems; Stability;

fLanguage

English

Publisher

ieee

Conference_Titel

Consumer Electronics, 1997. ISCE '97., Proceedings of 1997 IEEE International Symposium on

Print_ISBN

0-7803-4371-9

Type

conf

DOI

10.1109/ISCE.1997.658365

Filename

658365