发明授权
- 专利标题: Recording position compensation circuit for use in digital information recording-reproduction apparatus
- 专利标题(中): 用于数字信息记录重现装置的记录位置补偿电路
-
申请号: US674207申请日: 1991-03-25
-
公开(公告)号: US5173815A公开(公告)日: 1992-12-22
- 发明人: Tetsuo Iwaki , Hidetaka Mizumaki , Chiaki Yamawaki
- 申请人: Tetsuo Iwaki , Hidetaka Mizumaki , Chiaki Yamawaki
- 申请人地址: JPX Osaka
- 专利权人: Sharp Kabushiki Kaisha
- 当前专利权人: Sharp Kabushiki Kaisha
- 当前专利权人地址: JPX Osaka
- 优先权: JPX2-80378 19900327
- 主分类号: G11B20/12
- IPC分类号: G11B20/12 ; G11B27/02 ; G11B27/032 ; G11B27/036
摘要:
A recording position compensation circuit for use in the digital information recording-reproduction apparatus of the present disclosure has a microprocessor for generating an offset signal indicating a deviation between standard signal processing time, which is required for a process wherein digital medium information already recorded on the recording medium is reproduced through the advanced reproduction head and re-recorded on the recording medium through the recording head, and inter-head travelling time required for the recording medium to travel a distance from the advanced reproduction head to the recording head. A first counter generates a reference symbol pointer indicating a reference of a sequence whereby digital information stored in the memory is read out so that a part of the digital information is rewritten. A second counter generates a compensated symbol pointer having a phase difference corresponding to the deviation with respect to the reference symbol pointer. Thus, since digital information is read out from the memory so that the signal processing time from reproduction to re-recording may coincide with the inter-head travelling time, a recording position on the recording medium at which rewriting is performed, is corrected.
公开/授权文献
信息查询
IPC分类: