Dynamic information storage or retrieval – Condition indicating – monitoring – or testing – Including radiation storage or retrieval
Patent
1997-09-29
2000-05-09
Huber, Paul W.
Dynamic information storage or retrieval
Condition indicating, monitoring, or testing
Including radiation storage or retrieval
369116, G11B 390
Patent
active
060613165
ABSTRACT:
A recording/reproducing apparatus for recording data in or reproducing data from an information recording medium having a plurality of tracks includes: an optical head outputting a laser beam; a driving circuit driving the optical head; a signal level measuring device measuring a level of a signal reproduced from the information recording medium; and a controller recording data on one of the plurality of tracks using the laser beam output from the optical head, controlling the driving circuit in such a manner that a signal is reproduced from a track adjacent to the track on which the data is recorded, measuring a level of the signal reproduced from the adjacent track using the signal level measuring device, and determining an optimum value of an output value of the laser beam output from the optical head in accordance with the level of the signal reproduced from the adjacent track.
REFERENCES:
patent: 5070495 (1991-12-01), Bletscher, Jr. et al.
patent: 5450383 (1995-09-01), Call et al.
patent: 5757759 (1998-05-01), Takahashi et al.
Miyatake Norio
Nakamura Tadashi
Huber Paul W.
Matsushita Electric - Industrial Co., Ltd.
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