Optical information recording and/or reproducing method and appa

Details Optical information recording and/or reproducing method and appa Optical information recording and/or reproducing method and appa

1993-03-22

1995-07-25

Dzierzynski, Paul M.

Registers

Coded record sensors

Particular sensor structure

369 4428, G06K 704

Patent

active

054364388

ABSTRACT:
A card-like optical information recording medium is used to effect recording and/or reproducing of information thereon. Relative movement between the recording medium and an optical head for irradiating the medium with light beam is conducted to record or reproduce information on or from the recording medium. A relative velocity between the optical head and the recording medium caused by the relative movement is detected to check if the velocity is being changed. When it is detected that the relative velocity is being changed as an acceleration or deceleration therebetween, a light spot formed by the optical head on the recording medium is shifted from the current track to another track such as a neighboring or desired track.

REFERENCES:
patent: 4982391 (1991-01-01), Sakagami et al.

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