Method and apparatus for data recording and reproducing with err

Details Method and apparatus for data recording and reproducing with err Method and apparatus for data recording and reproducing with err

1988-09-23

1990-03-13

Richardson, Robert L.

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

369 60, 360 53, 371 51, 371 30, G11B 700

Patent

active

049088114

ABSTRACT:
An optical disk data recording and reproducing apparatus includes variable delay circuits in the recording and reproducing sections of the apparatus. The delay of the reproducing section delay circuit is adjusted when the error ratio determined for a reproduced data signal corresponding to a recorded data signal is greater than a predetermined value. When the error ratio is less than the predetermined value after adjustment of the delay circuit, the delay of the delay circuit in the recording section is adjusted to match the adjusted delay of the reproducing section delay circuit and the delay of the latter circuit is retured to its original value.

REFERENCES:
patent: 4367495 (1983-01-01), Mita et al.
patent: 4768108 (1988-08-01), Higurashi

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