G - Physics – 11 – B
Patent
G - Physics
11
B
352/32.1
G11B 7/00 (2006.01) G11B 7/006 (2006.01) G11B 20/10 (2006.01)
Patent
CA 2020243
The present invention is directed to a recording apparatus which overwrites an input signal having pulse duration periods and pulse spacing periods to an optical disk by irradiation of a laser beam to form recording marks corresponding to the pulse duration periods. The apparatus includes a detector for detecting a leading edge of the pulse duration period and for producing a start signal thereupon, another detector for detecting a trailing edge of the pulse duration period and for producing a stop signal thereupon, a pattern setting circuit for setting a predetermined basic pattern, and a pattern generator for generating the basic pattern from its beginning in response to the start signal and for terminating the generation of the basic pattern in response to the stop signal. The apparatus further includes a circuit for forming a modulated signal using a full or portion of the basic pattern produced from the pattern generator. The laser is produced by the modulated signal.
Akahira Nobuo
Ishibashi Kenzou
Kimura Kunio
Nishiuchi Kenichi
Ohno Eiji
Kirby Eades Gale Baker
Matsushita Electric Industrial Co. Ltd.
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