Method and device for controlling optical head moving speed

Details Method and device for controlling optical head moving speed Method and device for controlling optical head moving speed

1991-10-02

1993-06-15

Mottola, Steven

Dynamic information storage or retrieval

Information location or remote operator actuated control

Selective addressing of storage medium

360 7804, 369 4428, G11B 700

Patent

active

052205479

ABSTRACT:
This invention has an object to provide speed control method and device for an optical head in which a decelerating operation and so on for the optical head is carried out at an uniform deceleration or acceleration mode at high speed, and a speed control is carried out sufficiently accurately with excellent seekability and simple construction. The speed control device for the optical head according to this invention is so constructed that in the speed control of the seek operation of the optical head using feedback of a difference signal between a reference speed signal and a speed detection signal, the reference speed signal is switched to a ground level when a residual track number is below a predetermined value, and the optical head is pulled into a tracking servo operation when a predetermined time has elapsed since the switching time of the reference speed signal to the ground level.

REFERENCES:
patent: 4835752 (1989-05-01), Nakatsu et al.
patent: 4901299 (1990-02-01), Nakatsu
patent: 4955009 (1990-09-01), Nakatsu et al.
National Technical Report, vol. 35, No. 2, Apr. 1989, pp. 67-73.
"The Television Society", vol. 44, No. 10, pp. 1391-1397 (1990).
"An 86 mm magneto-optical disk drive with a compact and fast-seek-time optical head", SPIE, vol. 1316, Optical Data Storage (1990) pp. 2-10.

Affiliated with

Also associated with

Rating

Method and device for controlling optical head moving speed does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and device for controlling optical head moving speed, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and device for controlling optical head moving speed will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1048355