Optical disk recording and reproducing apparatus reliably provid

Details Optical disk recording and reproducing apparatus reliably provid Optical disk recording and reproducing apparatus reliably provid

1984-10-30

1988-08-02

Cardillo, Raymond F.

Dynamic information storage or retrieval

Information location or remote operator actuated control

Selective addressing of storage medium

369 41, 369275, 364200, G11B 2108, G11B 7013

Patent

active

047617721

ABSTRACT:
An optical disk recording and reproducing apparatus includes an optical disk memory and an optical head for writing and reading out data on and from the optical disk memory by accessing onto a track of this optical disk memory and irradiating a laser beam onto a desired track. The tracks of this optical disk memory are divided into a user inaccessible area, and non-recording area, and user accessible area which are respectively provided inside and outside of the user inaccessible area. A plurality of blocks is allocated to each track in these user inaccessible area and user accessible area. Block head data representative of a block position is recorded in each block. When the optical head inadvertently enters the user inaccessible area an operation is performed to reposition the head at the user accessible area.

REFERENCES:
patent: 3585606 (1971-06-01), Evans et al.
patent: 4000510 (1976-12-01), Cheney et al.
patent: 4138741 (1979-02-01), Hedlund et al.
patent: 4215400 (1980-07-01), Denko
patent: 4229808 (1980-10-01), Hui
patent: 4262332 (1981-04-01), Bass et al.
patent: 4535439 (1985-08-01), Satoh et al.
patent: 4580253 (1986-04-01), Yoshidome
patent: 4641294 (1987-02-01), Yoshimaru

Affiliated with

Also associated with

Rating

Optical disk recording and reproducing apparatus reliably provid does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Optical disk recording and reproducing apparatus reliably provid, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical disk recording and reproducing apparatus reliably provid will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-714982