Optical disk apparatus and recording/reproduction method therefo

Details Optical disk apparatus and recording/reproduction method therefo Optical disk apparatus and recording/reproduction method therefo

1994-11-04

1996-07-09

Epps, Georgia Y.

Dynamic information storage or retrieval

Information location or remote operator actuated control

Selective addressing of storage medium

3692753, 369 47, 369 93, G11B 700

Patent

active

055351824

ABSTRACT:
An optical disk apparatus includes an optical storage medium, an optical head, a head drive section, and a recording data processor. The optical storage medium is rotated at a constant angular velocity. The optical storage medium has a storage area constituted by track areas ranging from the 0th area on the innermost periphery to the nth area on the outermost periphery of the storage area. The track areas are set by dividing the storage area into (n+1) equal areas (n is an integer satisfying n (.gtoreq.1) in the radial direction. The optical head optically records and reproduces recording data on and from the optical storage medium with a constant wave length. The head drive section drives/controls the optical head. The recording data processor generates recording data such that the data amount is increased by .DELTA.A (A is the amount of recording data per track when the optical head is located in the 0th track area) every time the optical head moves to the next track area, and outputs the recording data to the optical head. The recording data amount A and the increase .DELTA.A are set such that the ratio between a track diameter in the mth track area (m is an integer satisfying n.gtoreq.m.gtoreq.0) and a recording data amount (A+.DELTA.A.times.m) is made substantially constant.

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