Dynamic information storage or retrieval – Specific detail of information handling portion of system – Radiation beam modification of or by storage medium
Patent
1998-11-10
2000-12-19
Huber, Paul W.
Dynamic information storage or retrieval
Specific detail of information handling portion of system
Radiation beam modification of or by storage medium
369 48, G11B 700
Patent
active
061635189
ABSTRACT:
A crosstalk eliminating method for use in a recorded information reproducing apparatus, which can eliminate crosstalks from the adjacent tracks of a recording track as a reading target even if a tilt occurs between a recording disk and a pickup. A reading position by the pickup for the center recording track among the three adjacent recording tracks is employed as a reference. Crosstalk components are obtained based on a read signal read out from each of the positions which are shifted by a predetermined distance frontward and rearward in the reading direction from the reading position on each of the recording tracks which are neighboring on both sides of the center recording track and a read signal read out from each position near the reading position on each of the recording tracks which are neighboring on both sides of the center recording track. The crosstalk components are subtracted from the read signal read out from the reading position on the center recording track, thereby eliminating the crosstalks from the adjacent tracks.
REFERENCES:
patent: 5153872 (1992-10-01), Maeda
patent: 5729514 (1998-03-01), Horigome et al.
patent: 6084837 (2000-07-01), Miyanabe et al.
Kuribayashi Hiroki
Miyanabe Shogo
Huber Paul W.
Pioneer Electronic Corporation
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