发明授权
- 专利标题: Digital signal reproducing apparatus
- 专利标题(中): 数字信号再现装置
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申请号: US949035申请日: 1997-10-10
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公开(公告)号: US5995465A公开(公告)日: 1999-11-30
- 发明人: Hideki Hayashi , Masaru Umezawa , Hideki Kobayashi
- 申请人: Hideki Hayashi , Masaru Umezawa , Hideki Kobayashi
- 申请人地址: JPX
- 专利权人: Pioneer Electronic Corporation
- 当前专利权人: Pioneer Electronic Corporation
- 当前专利权人地址: JPX
- 优先权: JPXP8-289316 19961011
- 主分类号: G11B20/14
- IPC分类号: G11B20/14 ; G11B7/00 ; G11B19/06 ; G11B19/28
摘要:
A digital signal reproducing apparatus has the clock signal generating device 24 having: a frequency setting device 12 for setting a desired frequency on the basis of the predetermined linear velocity and a radius position of a pickup 1; a first frequency difference signal generating device 242 for generating a binary signal E corresponding to a difference between the desired frequency fsd and the frequency fs of the sample clock signal A to be used for reproducing a reproduction digital signal; a second frequency difference signal generating device 243 for generating a pulse signal L corresponding to a difference between the frequency based on the reproduction digital signal and the frequency fs of the sample clock signal A; a phase difference signal generating device 244 for generating a pulse signal Y corresponding to a difference between the phase based on the reading signal read from the disc and the phase of the sample clock signal A; and a synchronizing device 24 for synchronizing the frequency fs and phase of the sample clock signal A with the frequency of the reading signal on the basis of the binary signal E, the pulse signal L and the pulse signal Y.
公开/授权文献
- US4251981A Mowing machines 公开/授权日:1981-02-24