Stabilized overwriteable optical recording method using laser be

Details Stabilized overwriteable optical recording method using laser be Stabilized overwriteable optical recording method using laser be

1996-11-05

1998-11-03

Dinh, Tan

Dynamic information storage or retrieval

Storage or retrieval by simultaneous application of diverse...

Magnetic field and light beam

369 54, 369116, G11B 1100

Patent

active

058319433

ABSTRACT:
A stabilized overwriteable optical recording method, wherein overwriting is performed sufficiently because erasure does not become poor with the low level laser beam intensity P.sub.L being set too low. In a method of setting the recording laser beam intensity by performing test recording on an overwriteable optical recording medium, the setting of the low level recording laser beam intensity and the setting of the high level recording laser beam intensity are respectively independently performed. According to a different embodiment of the invention, another stabilized overwriteable optical recording method is disclosed. After the signal of a predetermined pattern has been recorded on an overwriteable optical recording medium, the recorded predetermined pattern is played back, and by a comparison of the pattern recovered from its playback signal with the predetermined pattern, an appropriate recording laser beam intensity is found.

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