Method and apparatus for detecting a track count in an optical d

Details Method and apparatus for detecting a track count in an optical d Method and apparatus for detecting a track count in an optical d

1990-02-27

1993-08-24

Young, W. R.

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

369 32, 369 44280, G11B 7085

Patent

active

052395308

ABSTRACT:
An optical disk apparatus is used for an optical disk having a plurality of types of access marks repeatedly formed on the optical disk, each access mark being constituted by at least two pits. The apparatus comprises an optical head for optically reading a pattern represented by each of the access marks, a discrimination circuit for discriminating whether or not the pattern is correctly read out by the optical head, a storage for storing a pattern of access mark which is discriminated to be correct by the discrimination circuit until the discrimination circuit discriminates the next pattern of the access marks, and cross track count detector for comparing the pattern stored in the storage with the correct pattern discriminated by the discrimination circuit and for calculating the cross track count from these two patterns.

REFERENCES:
patent: 4697256 (1987-09-01), Shinkai
patent: 4855977 (1989-08-01), Getreuer et al.
patent: 4887253 (1989-12-01), Tateishi
patent: 4972350 (1990-11-01), Sander et al.
patent: 5038334 (1991-08-01), Uchikoshi et al.
patent: 5099467 (1992-03-01), Sumihiro et al.
patent: 5128916 (1992-07-01), Ito et al.
The Japan Society of Applied Physics and Related Societies No. 3, 2P-ZB-15; M. Shimamoto, Mitsubishi Electric Corp.; May 2, 1989.

Affiliated with

Also associated with

Rating

Method and apparatus for detecting a track count in an optical d 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 detecting a track count in an optical d, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for detecting a track count in an optical d will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-834463