Optical disc and optical disc driving apparatus

Details Optical disc and optical disc driving apparatus Optical disc and optical disc driving apparatus

1997-06-26

1999-08-03

Neyzari, Ali

Dynamic information storage or retrieval

Storage medium structure

Optical track structure

3692754, G11B 726

Patent

active

059334100

ABSTRACT:
An optical disc using a single-spiral land and groove track format enabling accurate tracking offset correction and reliable detection of the transition point between a land track and a groove track, and a driving apparatus therefor. Four physical address areas PID1, PID2, PID3, and PID4 are recorded to a header area such that PID1 and PID2 are offset one-half track pitch toward the outside circumference of the disc from the groove track center, and PID3 and PID4 are offset one-half track pitch toward the inside circumference of the disc from the groove track center, and the physical address areas PID1-PID4 can be detected by means of a difference signal in the radial direction. The single frequency pattern area VFO at the beginning of each PID is lengthened by PID1 and PID3, thereby enabling tracking offset correction using a sum signal, and detection of the land-groove transition point using a difference signal obtained from the PID offset.

REFERENCES:
patent: 4707816 (1987-11-01), Yonezawa et al.
patent: 4748609 (1988-05-01), Yonezawa et al.
patent: 5383176 (1995-01-01), Inui et al.
patent: 5452284 (1995-09-01), Miyagawa et al.
patent: 5616390 (1997-04-01), Miyagawa et al.
patent: 5805565 (1996-02-01), Miyamoto et al.
The Japan Society of Applied Physics, "Japanese Journal of Applied Physics", Part 1, Nov. 1993, vol. 32 No. 11B.
Masatoshi Ohtake, et al., "Composite Wobbled Tracking in the Optical Disk System", Dec. 12-13, 1985.

Affiliated with

Also associated with

Rating

Optical disc and optical disc driving apparatus 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 disc and optical disc driving apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical disc and optical disc driving apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-855989