Optical disc system including current monitoring circuit assembly having controller with improved optics module and laser driver and method for operating same
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United States of America Patent
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-
Aug 21, 2001
Issued Date -
N/A
app pub date -
Sep 17, 1997
filing date -
Jan 25, 1995
priority date (Note) -
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status (Latency Note)
Importance
Abstract
An optical drive system includes a computer that monitors the current in the bias coil of a magnetomotive field generator to determine when a predetermined current threshold is exceeded. When the threshold is exceeded, a sufficiently strong magnetic field is generated to permit writing of information on a storage medium utilizing a laser. A laser pulse generator is then enabled. The system is provided with an optics module for processing light produced by the laser light source. A laser driver for energizing the laser light source is positioned in close proximity to the optics module and the laser light source to reduce noise in signals associated with the optics module. The system thereby achieves a substantially shortened write cycle while reducing relevant signal noise.
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