发明授权
US5991109A Magnetic recording and reproducing apparatus with signal delay and
selection
失效
具有信号延迟和选择的磁记录和再现设备
- 专利标题: Magnetic recording and reproducing apparatus with signal delay and selection
- 专利标题(中): 具有信号延迟和选择的磁记录和再现设备
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申请号: US751328申请日: 1996-11-18
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公开(公告)号: US5991109A公开(公告)日: 1999-11-23
- 发明人: Masatoshi Taniguchi , Toshiyuki Kohri , Keiichi Ishida
- 申请人: Masatoshi Taniguchi , Toshiyuki Kohri , Keiichi Ishida
- 申请人地址: JPX Osaka-fu
- 专利权人: Matsushita Electric Industrial Co., Ltd.
- 当前专利权人: Matsushita Electric Industrial Co., Ltd.
- 当前专利权人地址: JPX Osaka-fu
- 优先权: JPX7-302597 19951121
- 主分类号: H04N5/93
- IPC分类号: H04N5/93 ; G11B5/008 ; G11B5/027 ; G11B15/12 ; G11B15/18 ; G11B20/00 ; G11B20/10 ; G11B27/00 ; G11B15/14
摘要:
A magnetic recording and reproducing apparatus includes a reading and writing head for writing data on data tracks formed on a recording tape and reading the data therefrom to produce a first reproduction data. A simultaneous reproducing head is provided for reading a second production data from the data track just being written or read by the reading and writing head. A delay unit delays the first signal by a predetermined phase difference factor to arrange the first and second reproduction data on the same time base. A determiner is also provided for selecting either of said first and second reproduction signals whose signal quality is better than the other.