发明授权
US4989102A Apparatus for magnetically recording and/or reproducing digital signals
in a plurality of modes having different formats
失效
用于以具有不同格式的多种模式磁记录和/或再现数字信号的装置
- 专利标题： Apparatus for magnetically recording and/or reproducing digital signals in a plurality of modes having different formats
- 专利标题（中）： 用于以具有不同格式的多种模式磁记录和/或再现数字信号的装置
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申请号： US252925申请日： 1988-10-04
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公开(公告)号： US4989102A公开(公告)日： 1991-01-29
- 发明人: Noboru Murabayashi , Keiji Kanota
- 申请人： Noboru Murabayashi , Keiji Kanota
- 申请人地址： JPX Tokyo
- 专利权人： Sony Corporation
- 当前专利权人： Sony Corporation
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX62-253974 19871008
- 主分类号： G11B15/087
- IPC分类号： G11B15/087 ; G11B20/10 ; H04N5/91
摘要：
In an apparatus for magnetically recording and/or reproducing digital signals in a plurality of modes characterized by different respective formats, pilot signals having different frequencies are generated to identify the modes, respectively, and, during a recording operation in one of such modes, the respective pilot signal is mixed with the digital signal to be recorded for providing a resultant mixed signal which is recorded. Thereafter, during a reproducing operation of the apparatus, the pilot signal included in the reproduced mixed signal is detected for determining the format of the recorded signal on the basis of the frequency of the detected pilot signal, whereupon the respective mode of the apparatus is established.
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