Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
Patent
1983-11-14
1987-09-08
Faber, Alan
Dynamic information storage or retrieval
With servo positioning of transducer assembly over track...
Optical servo system
369111, 369100, 250202, 250236, G11B 709
Patent
active
046929134
ABSTRACT:
The method of reading data from a data record carrier on which data has been recorded in arcuately nested, equal radii data rows which are equally spaced apart along a common centerline that is coextensive with a radius for each data row, comprises the steps of: incrementally moving the data record carrier in steps transversely of the data rows; projecting a light beam onto the plane in which the data record carrier moves; rotating the light beam about an axis parallel to the axis of said light beam to rotate said light beam in an arcuate path across the data record carrier, the radius of the arcuate path being the same or approximately the same radius of each data row; detecting scattered light outside the cone of specular reflection from the light beam impinging on the data record carrier, or the lack of scattered light, as the light beam traverses each data row; and sensing, and correcting for, difference between the arcuate path of said light beam and the arcuate path of the data row being traversed by said light beam to ensure that said light beam traverses approximately the same arc as that of each data row.
REFERENCES:
patent: 3137768 (1964-06-01), Mullin
patent: 3177476 (1965-04-01), Robinson
patent: 3186707 (1965-06-01), Banning, Jr. et al.
patent: 3198527 (1965-08-01), Stanton
patent: 3387295 (1968-06-01), DeMoss
patent: 3501586 (1970-03-01), Russell
patent: 3543007 (1970-11-01), Brinker
patent: 3549826 (1970-12-01), Browning
patent: 3549897 (1970-12-01), Blake
patent: 3564120 (1971-02-01), Taylor
patent: 3624284 (1971-11-01), Russell
patent: 3675930 (1972-07-01), Summerfield
patent: 3765743 (1973-10-01), Reaves et al.
patent: 3795902 (1974-03-01), Russell
patent: 3806643 (1974-04-01), Russell
patent: 3885094 (1975-05-01), Russell
patent: 3891794 (1975-06-01), Russell
patent: 3898629 (1975-08-01), Westerberg
patent: 3919697 (1975-11-01), Walker
patent: 3939302 (1976-02-01), Kihara
patent: 3961315 (1976-06-01), Yokoyama
patent: 3963863 (1976-06-01), Molissin
patent: 3983317 (1976-09-01), Glorioso
patent: 4090031 (1978-05-01), Russell
patent: 4094010 (1978-06-01), Pepperl et al.
patent: 4094013 (1978-06-01), Hill et al.
patent: 4102569 (1978-07-01), Schwartz
patent: 4157577 (1979-06-01), Porter, Jr. et al.
patent: 4163600 (1979-08-01), Russell
patent: 4209804 (1980-06-01), Dil
patent: 4213040 (1980-07-01), Gokey et al.
patent: 4224481 (1980-09-01), Russell
patent: 4254329 (1981-03-01), Gokey
patent: 4353077 (1982-10-01), Gokey et al.
patent: 4375100 (1983-02-01), Tsuji
patent: 4410877 (1983-10-01), Carasso et al.
patent: 4416001 (1983-11-01), Ackerman
patent: 4441184 (1984-04-01), Sonoda
patent: 4519054 (1985-05-01), Jewer
patent: 4534031 (1985-08-01), Jewer
Ackerman Richard
Hurlbut Donovan W.
Jewer Alan A.
Faber Alan
News Log International, Inc.
Vigil Thomas R.
LandOfFree
Method and apparatus for reading a data record carrier 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 reading a data record carrier, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for reading a data record carrier will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2163099