Split detector system for direct read-while-write operation on m

Details Split detector system for direct read-while-write operation on m Split detector system for direct read-while-write operation on m

1992-12-14

1994-02-01

Young, W. R.

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

369 59, 369110, 369116, 369124, G11B 700

Patent

active

052837750

ABSTRACT:
An optical disk drive apparatus includes a magnet-optic optical disk, laser generator, optical system, first and second photodetectors, data detecting and amplifying device connected to the photodetectors and a laser generator control device. The photodetectors each have first and second detecting sections receiving leading and trailing light beam segments, respectively, and each photodetector producing a magnitude proportional output signal. The control device includes a mode setting device for operating in a read only mode using both first and second sections and a read while performing a write mode using only the second sections.

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