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Write Power Optimizing Method for Multi-Pulse Recording on Magneto-Optical Disk
Hiroshi FUJI Tomiyuki NUMATA Mitsuo ISHII Takeshi YAMAGUCHI Hideaki SATO Shigeo TERASHIMA
IEICE TRANSACTIONS on Electronics
Publication Date: 1996/08/25
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Recording and Memory Technologies
write power control, pre-write testing, multi-pulse, magneto-oprical disk, ambient temperature, thermal interference,
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A laser power optimizing method for multi-pulse recording is described. Multi-pulse recording uses the recording pulse formed by bias part and comb part. To obtain best readout signal characteristics and reduce the time for optimizing, new mark pattern is recorded and then two parts of the recording pulse are individually adjusted by evaluating the detected signals during pre-write testing. At the optimized laser power by this method, a good qualitative eyepattern was obtained. As a result, this new method proves to be suitable for the multi-pulse recording and adapted to various disks with different recording properties.