Crosstalk canceler with digital filter for producing pseudo cros

Details Crosstalk canceler with digital filter for producing pseudo cros Crosstalk canceler with digital filter for producing pseudo cros

1997-04-18

1998-08-04

Young, W. R.

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

369124, G11B 700

Patent

active

057904928

ABSTRACT:
A crosstalk canceler cancels crosstalk components mixed into a reproduced signal of a target track from a first and a second neighboring tracks positioned on both sides of the target track formed on an optical disc. The crosstalk canceler includes: unit for reproducing a signal recorded on the tracks of the optical disc; unit for processing the reproduced signal to produce 1-bit binary data indicating data recorded on the first neighboring track and outputting first binary data; unit for producing a first pseudo crosstalk component which mixes into the reproduced signal of the target track from the first neighboring track based on the first binary data; unit for delaying an output signal corresponding to a pure recorded signal of the track preceding the target track to produce second binary data indicating data recorded on the second neighboring track and outputting second binary data; unit for producing a second pseudo crosstalk component which mixes into the reproduced signal of the target track from the second neighboring track based on the second binary data; and unit for subtracting the first and the second pseudo crosstalk components from the reproduced signal of the target track and outputting a pure recorded signal of the target track.

REFERENCES:
patent: 5084858 (1992-01-01), Maeda
patent: 5153872 (1992-10-01), Maeda
patent: 5402403 (1995-03-01), Maeda
Patent Abstracts of Japan, vol. 14, No. 207, P1043, & JP 2-44573, Apr. 26, 1990.

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