Dynamic information storage or retrieval – Information location or remote operator actuated control – Selective addressing of storage medium
Patent
1993-04-20
1995-02-28
Young, W. R.
Dynamic information storage or retrieval
Information location or remote operator actuated control
Selective addressing of storage medium
369 33, 369 4432, 369 58, 369 47, G11B 7085
Patent
active
053943830
ABSTRACT:
The reproduction finish of an optical disc reproducing apparatus is controlled. The optical disc has a program area, in which information is recorded one after another in a radial direction from an inner circumference toward an outer circumference. The information includes recording position information arranged at a predetermined interval in the radial direction. The controlling method includes the steps of: reading the recording position information one after another; continually comparing a presently read recording position information with a previously read recording position information; moving a reading position toward the outer circumference; distinguishing whether reading of the information at the reading position after moving is normal or not; and moving the reading position toward the inner circumference, and finishing the information reproduction.
REFERENCES:
patent: 5012461 (1991-04-01), Yoshida et al.
patent: 5172354 (1992-12-01), Otsubo
patent: 5241521 (1993-08-01), Shigemori
Edun Muhammad N.
Pioneer Electronic Corporation
Young W. R.
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