Optical information write/read device and method for writing dat

Details Optical information write/read device and method for writing dat Optical information write/read device and method for writing dat

1993-07-15

1995-11-21

Young, W. R.

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

369 32, 369111, G11B 700

Patent

active

054694183

ABSTRACT:
A write/read device includes two optical heads for writing data on an optical disk. The two heads are moved simultaneously after data is written in a track, the written data is read and checked for writing errors. This write verify is performed by the two optical heads in parallel, and data can be written on an optical disk at a fast rate.

REFERENCES:
patent: 3805284 (1974-04-01), Coon, Jr. et al.
patent: 4873679 (1989-10-01), Murai et al.
patent: 5128946 (1992-07-01), Ogino et al.
patent: 5239424 (1993-08-01), Hasegawa et al.
patent: 5253242 (1993-10-01), Satoh et al.
patent: 5255270 (1993-10-01), Yanai et al.

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