Optical disk reproducing apparatus having a cosine equalizer wit

Details Optical disk reproducing apparatus having a cosine equalizer wit Optical disk reproducing apparatus having a cosine equalizer wit

1996-04-03

1997-12-30

Huber, P. W.

Dynamic information storage or retrieval

Control of storage or retrieval operation by a control...

Mechanism control by the control signal

360 27, 360 65, G11B 509, G11B 502, G11B 5035

Patent

active

057038520

ABSTRACT:
An optical disk apparatus has an optical pickup, a cosine equalizer having frequency characteristics including a boosting frequency for a frequency component which has a frequency that is about twice the frequency of an RF signal reproduced from recorded data with a shortest data length, and a digital signal processor for generating recorded data from the RF signal. Irrespective to the type of reproduced data from the optical pickup, the optical disk apparatus greatly increases the quality of the reproduced data as information transfer accuracy as compared with a conventional disk optical system.

REFERENCES:
patent: 4509155 (1985-04-01), Masuda et al.
patent: 4616356 (1986-10-01), Wilkinson et al.
patent: 4780772 (1988-10-01), Shibuya et al.
patent: 5388087 (1995-02-01), Saiki et al.

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