发明名称 |
Laser diode driving apparatus in an optical information recording and reproducing apparatus |
摘要 |
Disclosed is a laser diode driving apparatus in a optical information recording and reproducing apparatus by which the bottom power of a laser beam for the information recording and reproducing may be maintained stably at a target value. A bottom power corrected value is obtained by multiplying the peak power of a laser beam for the information recording by a predetermined coefficient. Then, the bottom power corrected value is added with a target bottom power to set the summed value as a corrected target bottom power. The bottom level of an optical power detection signal is subtracted from the corrected target bottom power to provide the remaining value as an error signal. The bottom power of the laser beam is adjusted on the basis of the error signal.
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申请公布号 |
US5721580(A) |
申请公布日期 |
1998.02.24 |
申请号 |
US19950537492 |
申请日期 |
1995.12.27 |
申请人 |
PIONEER ELECTRONIC CORPORATION |
发明人 |
TATEISHI, KIYOSHI;FURUKAWA, JUNICHI |
分类号 |
G11B7/0045;G11B7/005;G11B7/125;(IPC1-7):B41J7/47 |
主分类号 |
G11B7/0045 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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