Dynamic information storage or retrieval – Condition indicating – monitoring – or testing – Including radiation storage or retrieval
Patent
1997-04-15
1999-01-05
Tran, Thang V.
Dynamic information storage or retrieval
Condition indicating, monitoring, or testing
Including radiation storage or retrieval
369 4414, G11B 700
Patent
active
058569642
ABSTRACT:
Apparatus for optically writing information on or reading information from a disc having tracks includes a carriage moveable in a radial direction relative to the disc tracks and at least first and second optical heads spaced and mounted on the carriage; the first and second optical heads being moveable with the carriage, and at least one of the heads being pivotally mounted; and the first head being adapted to write information on a track of the disc, the second head being adapted to read information and produce a signal representative of recorded data. The apparatus further includes a structure connected to the pivotally mounted head and adapted to pivot the optical head as the carriage is displaced in the radial direction so that both the first and second optical heads are spaced from each other but aligned on the same track within the tracking ability of the head, and an arrangement responsive to the read head signal to adjust operation of first head during writing to improve the recording of data.
REFERENCES:
patent: 5216660 (1993-06-01), Iimura
patent: 5392273 (1995-02-01), Masaki et al.
patent: 5436880 (1995-07-01), Eastman et al.
patent: 5444684 (1995-08-01), Yanagi et al.
patent: 5446716 (1995-08-01), Eastman et al.
patent: 5495466 (1996-02-01), Dohmeier et al.
Chapter 11 of Optical Recording, by Alan B. Marchant, Addison-Wesley Publishing Company, New York, 1990.
Gage Edward C.
Shtipelman Boris A.
Eastman Kodak Company
Owens Raymond L.
Tran Thang V.
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