Apparatus for recording/reproducing information data in two dime

Dynamic information storage or retrieval – Specific detail of information handling portion of system – Radiation beam modification of or by storage medium

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369120, 3692754, G11B 700

Patent

active

056573081

ABSTRACT:
In an information recording/reproducing apparatus constructed of: a buffer for storing therein consecutive recording data in a unit of two dimensional conversion; a coding device for converting the consecutive recording data into a two-dimensional data arrangement arranged by "n" lines and "m" columns corresponding to said unit of data; a recording device for subdividing said two-dimensional data arrangement arranged by "n" lines and "m" columns so as to be read out, and for controlling "m" pieces of light sources in accordance with these data series; and an optical apparatus for converging luminous fluxes from said "m" pieces of light sources so as to form "m" pieces of spots on a disk plane, the recording data is recorded on the disk plane as an optically distringuishable pit group having two-dimensionally extended areas arranged by "n" lines and "m" columns. During a reproducing operation, the reflected light is detected by "m" pieces of detectors; "m" columns of one-dimensional data series are generated from the reflected light detected by these detectors in a generator; and also consecutive data is reproduced from the two dimensional data arranged by "n" lines and "m" columns in a decoder.

REFERENCES:
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patent: 5008521 (1991-04-01), Ohki et al.
patent: 5056080 (1991-10-01), Russell
patent: 5093822 (1992-03-01), Kugiya et al.
patent: 5241166 (1993-08-01), Chandler
patent: 5410531 (1995-04-01), Tsujioka
"Optical Components Replicated Optics", Philips, Product Specification, Sep. 1994, pp. 1-28.

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