Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
Patent
1995-12-15
1999-02-09
Faber, Alan
Dynamic information storage or retrieval
With servo positioning of transducer assembly over track...
Optical servo system
369124, 369120, 369 54, 386115, G11B 700
Patent
active
058703616
ABSTRACT:
A device and system for the reading of a recording medium, which enables the reading of high-density information and the removal of disturbance (or cross-talk) from the information. The invention includes chiefly a reading device carrying out the parallel reading of the information from N pixels of an optical detector array and giving at least two sub-trains of samples in series (X, Y, Z), a cross-talk correction circuit for each sub-train of samples, each sub-train giving a train of cross-talk corrected samples (X', Y', Z'), and an input sequencer giving each correction circuit a train of samples to be corrected (Ys) from a first sub-frame of samples (Y) and samples (XN-1, Z0) from at least one second frame of samples (X,Z). This device and system can be applied to the reading of high-density recording media (magnetic or optical).
REFERENCES:
patent: 5124869 (1992-06-01), Lehureau
Ryuichi Katayama, et al. "Multi-Beam Optical Disk Drive for High Data Transfer Rate Systems", Japanese Journal of Applied Physics, Part 1 (Regular Papers and Short Notes), vol. 31, No. 2B, Feb. 1992, pp. 630-634.
Patent Abstracts of Japan, vol. 011, No. 153 (p-577), May 19, 1987 & 61 287056 (Toshiba Corp), Dec. 17, 1986, abridged.
"Thomson-CSF"
Faber Alan
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