Method and apparatus for scanning the recording surface of a rot

Details Method and apparatus for scanning the recording surface of a rot Method and apparatus for scanning the recording surface of a rot

1986-10-07

1988-12-27

Richardson, Robert L.

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369 57, 369 58, 369111, 369 50, G11B 700

Patent

active

047945842

ABSTRACT:
A method and apparatus for scanning a plurality of concentric or spiral tracks on the surface of a rotating disc-shaped record carrier with a beam of radiation which may be modulated with information to be recorded on such surface. The beam is produced by an optical head and is directed at a target point on the record carrier by a positioning device and a deflection device, the positioning device radially displacing the optical head and the deflection device radially deflecting the radiation beam produced by the optical head. The composite resultant motion of the target point on the carrier is in a radial direction and includes a non-reversing component produced by the positioning device and a reciprocating component produced by the deflection device. Since the reciprocal motion occurs only over the small distance between successive tracks, accurate low-vibration radial motion of the target point is achieved, enabling information to be rapidly and accurately recorded on respective spiral or concentric tracks by means of single-spot radiation beam.

REFERENCES:
patent: 3894179 (1975-07-01), Jacobs et al.
patent: 3908076 (1975-09-01), Broadbent
patent: 4198657 (1980-04-01), Kanamara
patent: 4223347 (1980-09-01), Bouwhuis et al.
patent: 4577301 (1986-03-01), Mathews et al.

Affiliated with

Also associated with

Rating

Method and apparatus for scanning the recording surface of a rot 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 apparatus for scanning the recording surface of a rot, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for scanning the recording surface of a rot will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-872900