发明名称 |
Data recording apparatus |
摘要 |
An data recording apparatus comprises a laser diode (LD) applying light to a recording medium to record data, a front monitor diode (LMD) detecting the intensity of light emitted from the laser diode (LD), a switch (7) for switching to said lowpass filter (2) in the operating state during the time period over which a signal of 14T mark is recorded, a lowpass filter (2) inputted a signal which is outputted from a front monitor diode (FMD), and a sampling/holding unit (3) sampling the output signal outputted from the lowpass filter (2). The intensity of light emitted from the laser diode (LD) based on the output signal sampled by the sampling/holding unit (3). The sampling timing is changed according to the data recording rate.
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申请公布号 |
EP1585115(A2) |
申请公布日期 |
2005.10.12 |
申请号 |
EP20050012117 |
申请日期 |
2002.09.10 |
申请人 |
PIONEER CORPORATION |
发明人 |
SASAKI, YOSHIO;TANAKA, HIROYUKI;UCHINO, HIROYUKI;UEDA, TADASHI |
分类号 |
G01J1/32;G11B7/00;G11B7/0045;G11B7/0055;G11B7/125;(IPC1-7):G11B7/00 |
主分类号 |
G01J1/32 |
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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