Crosstalk Canceler

Details Crosstalk Canceler Crosstalk Canceler

1995-05-19

1996-10-22

Dinh, Tan

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Mechanical modification or sensing of storage medium

369 4441, 369124, G11B 1722, G11B 700

Patent

active

055684564

ABSTRACT:
A crosstalk canceler includes: unit for obtaining signals of a target track and at least one track neighboring to the target track formed on an optical disc on which crosstalk detection signals are recorded; unit for generating timing signal indicating periods of the crosstalk detection signals; unit for multiplying the signal of the neighboring track by a coefficient to produce a multiplied signal; unit for subtracting the multiplied signal from the signal of the target track to output an output signal; unit for detecting levels of the output signal at the periods of the crosstalk detection signals; and unit for accumulating the levels and outputting the accumulated levels as the coefficient.

REFERENCES:
patent: 4750162 (1988-06-01), Tajima
patent: 5084858 (1992-01-01), Maeda
patent: 5153872 (1992-10-01), Maeda
patent: 5181161 (1993-01-01), Hirose et al.
patent: 5280466 (1994-01-01), Tomita

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