Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
Patent
1979-04-23
1982-03-23
Psitos, Aristotelis M.
Dynamic information storage or retrieval
With servo positioning of transducer assembly over track...
Optical servo system
369 47, 369 94, 369 97, 3581285, 350 67, G11B 700, G11B 1552, G11B 374, G02B 2717
Patent
active
043217001
ABSTRACT:
A track intercept apparatus is described for use in an optical playback machine which plays back data recorded on an optical record in track segments. The apparatus deflects the scanning light beam of such machine so that the light beam intercepts each selected track segment properly when the scan is initiated. A track intercept control circuit is employed having storage means for storage of variable values of track alignment data, adjust means for producing an adjustment signal corresponding to the stored data which is applied to a light beam deflection means, and timing means for controlling gating circuitry and for coordinating events within the circuit with the operation of the playback machine as a whole. One embodiment of the invention includes a circuit which compensates for track-following corrections made during scanning by returning the scanning light beam to a stored starting position. Another embodiment has a circuit for electronically aligning the scanner optics. A third embodiment includes a circuit for using data track addresses to direct the scanning light beam to the correct track. A fourth embodiment has a circuit which combines the first three embodiments.
REFERENCES:
patent: 3085230 (1963-04-01), Shoultes et al.
patent: 3314074 (1967-04-01), Becker
patent: 3501586 (1970-03-01), Russell
patent: 3624284 (1971-11-01), Russell
patent: 3823276 (1974-07-01), Maslowski et al.
patent: 3919697 (1975-11-01), Walker
patent: 3941927 (1976-03-01), Russell
patent: 4074085 (1978-02-01), Russell
patent: 4090031 (1978-05-01), Russell
patent: 4138741 (1979-02-01), Hedlund et al.
patent: 4142209 (1979-02-01), Hedlund et al.
Digital Recording Corporation
Psitos Aristotelis M.
LandOfFree
Optical track segment intercept 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 track segment intercept apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical track segment intercept apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1654149