Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
Patent
1991-09-11
1993-03-30
Psitos, Aristotells
Dynamic information storage or retrieval
With servo positioning of transducer assembly over track...
Optical servo system
369 32, G11B 700
Patent
active
051990172
ABSTRACT:
The invention is a positive peak level comparator for generating a positive peak pulse when a TES (Tracking Error Signal) is higher than a predetermined positive level, a negative peak level comparator for generating a negative peak pulse when the TES is lower than a predetermined negative level, and a logic circuit for generating an output pulse when said positive peak pulse and said negative peak pulse have been alternately input thereto. The arrangement prevents the TES from being miscounted even if the TES is distrubed due to the occurrence of, for example, a noise at a level close to either said predetermined positive level or said predetermined negative level and either said peak pulse or said negative pulse is successively generated.
REFERENCES:
patent: 4416002 (1983-11-01), Oguino et al.
patent: 4484319 (1984-11-01), Koishi et al.
patent: 4607358 (1986-08-01), Maeda et al.
patent: 4817069 (1989-03-01), Shigemori
patent: 4849953 (1989-07-01), Nomura et al.
patent: 5073885 (1991-12-01), Ito et al.
Kagami Naoyuki
Kubo Hiroaki
Okada Keiichi
Hindi Nabil
International Business Machines - Corporation
Psitos Aristotells
Schecter M. W.
LandOfFree
Optical disk drive and method for counting the number of tracks 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 drive and method for counting the number of tracks , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical disk drive and method for counting the number of tracks will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1286545