发明授权
- 专利标题: Method and apparatus for recording and reproducing a digital signal with a stationary head
- 专利标题(中): 用固定头记录和再现数字信号的方法和装置
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申请号: US757448申请日: 1985-07-22
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公开(公告)号: US4646170A公开(公告)日: 1987-02-24
- 发明人: Masaharu Kobayashi , Hiroo Okamoto , Takao Arai
- 申请人: Masaharu Kobayashi , Hiroo Okamoto , Takao Arai
- 申请人地址: JPX Tokyo
- 专利权人: Hitachi, Ltd.
- 当前专利权人: Hitachi, Ltd.
- 当前专利权人地址: JPX Tokyo
- 优先权: JPX59-151210 19840723
- 主分类号: G11B20/12
- IPC分类号: G11B20/12 ; G11B5/09 ; G11B20/18 ; G11B5/02 ; G06F11/10
摘要:
In a stationary head type PCM recorder having an A/D converter for sampling an analog signal and converting the analog signal to a digital signal, a signal processing circuit including data delay means for adding an error detection and correction code and a predetermined signal to the digital signal for each error correction group of a predetermined number of samples, and a multi-track head for recording an output of the signal processing circuit on a plurality of tracks of a magnetic record medium and reproducing the signals recorded on the magnetic record medium; incorrectability of the error detection and correction code for a burst error in the output analog signal due to a burst error in the reproduced output is reduced by delaying parity data by the error detection and correction code and the digital signal data by different delay times such that the digital signal data are dispersely recorded in a track direction and a tape transport direction, and allotting the delayed data to the multi-track head such that the data of the adjacent sample points are spaced from each other by at least the distribution length of the parity data and the parity data is arranged between the distributed adjacent data.
公开/授权文献
- US4133306A Palatal exerciser control device 公开/授权日:1979-01-09