Apparatus for and method of controlling output of a laser diode
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United States of America Patent
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May 24, 2005
Grant Date -
Nov 21, 2002
app pub date -
Feb 28, 2002
filing date -
May 17, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An apparatus for and a method of controlling an output of a laser diode in an optical recording/reproducing apparatus. The apparatus includes a sampling circuit sampling a present power value output from the laser diode with a predetermined frequency, an arithmetic unit connected to the sampling circuit, outputting a control power value applied to the laser diode in response to the present power value output from the sampling circuit and a reference power value, and a controller connected to the sampling circuit and the arithmetic unit, generating control signals, which control the operations of the sampling circuit and the arithmetic unit.
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