Method of and apparatus for recording digital data on an optical

Details Method of and apparatus for recording digital data on an optical Method of and apparatus for recording digital data on an optical

1994-07-15

1996-05-21

Epps, Georgia Y.

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

369 47, 369 49, 369 50, 369 13, 369124, 369 4414, G11B 700

Patent

active

055196829

ABSTRACT:
An optical disk recordable on first and second principal surfaces thereof rotates at a constant angular velocity. First and second optical heads positioned over the respective first and second principal surfaces are simultaneously moved along the same or different radiuses by a disk rotating unit for recording data on the optical disk. A head position detector is responsive to track addresses read by the first and second optical heads for outputting head position signals indicative of the distances from the center of the optical disk to the first and second optical heads. A control clock generator determines the ratio of linear velocities of tracks where the first and second optical heads are positioned, and generates control clock signals having respective bit rates depending on the linear velocity ratio. Based on the control clock signals, a data distributor distributes image data and non-image data such as audio and control data to the first and second optical heads.

REFERENCES:
patent: 4387452 (1983-06-01), Bricot et al.
patent: 4807204 (1989-02-01), Mizutani et al.
patent: 4873679 (1989-10-01), Murai et al.
patent: 5253242 (1993-10-01), Satoh et al.
patent: 5418774 (1995-05-01), O'Hara et al.

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