发明名称 |
Oscillator with a noise reduction function, a writer, and a method of controlling a writer |
摘要 |
An oscillator 10 with a noise reduction function has a memory 80 that memorizes modulation data DM for performing the spread spectrum modulation input from an output terminal fout, a modulation signal output circuit 60 that generates a modulation signal SM from the modulation data DM memorized in the memory 80, and a mixer 53 that overlays the modulation signal SM on the control voltage VC of a voltage control oscillator (VCO) 54 of a PLL circuit 50, and it becomes possible to output a spread spectrum modulated output signal CLv under a specification desired by a user by memorizing in the memory 80 the modulation data DM that corresponds to the spread spectrum modulation the user tries to set.
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申请公布号 |
US6650193(B2) |
申请公布日期 |
2003.11.18 |
申请号 |
US20020117687 |
申请日期 |
2002.04.05 |
申请人 |
SEIKO EPSON CORPORATION |
发明人 |
ENDO TAKASHI;FUJII YOICHI |
分类号 |
G06F1/04;H03L7/183;H04B15/04;(IPC1-7):H03B29/00;H03L7/06;H03L7/18 |
主分类号 |
G06F1/04 |
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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