Rotary recording medium having an improved three frequency picku

Details Rotary recording medium having an improved three frequency picku Rotary recording medium having an improved three frequency picku

1981-02-06

1984-01-17

Cardillo, Jr., Raymond F.

Dynamic information storage or retrieval

Information location or remote operator actuated control

Selective addressing of storage medium

369 33, 369 41, 369 43, 369 47, 369126, 369276, G11B 2112, G11B 2110, G11B 2108

Patent

active

044266928

ABSTRACT:
A rotary recording medium has at least one surface on which a spiral main track is formed with a reference signal track disposed centrally between mutually adjacent track turns. The track turns of the main track have an information signal recorded thereon. First and second reference signals are recorded alternately on the reference signal track, and a third reference signal is recorded at changeover positions on the recording medium. The three reference signals control a pickup guiding servo system. To identify specific places on the recorded disc, the third reference signal is recorded during extra long periods, with identification being made on a basis of the lengths of those long periods.

REFERENCES:
patent: 4330879 (1982-05-01), Wine
patent: 4331976 (1982-05-01), Kinjo et al.

Affiliated with

Also associated with

Rating

Rotary recording medium having an improved three frequency picku does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Rotary recording medium having an improved three frequency picku, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rotary recording medium having an improved three frequency picku will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-703361