发明公开
- 专利标题: Video signal recording apparatus and video signal recording and reproducing apparatus
- 专利标题(中): 一种视频记录和再现装置
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申请号: EP00117249.3申请日: 1995-12-18
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公开(公告)号: EP1052624A1公开(公告)日: 2000-11-15
- 发明人: Amada, Nobutaka , Owashi, Hitoaki , Noguchi, Takaharu , Kumasaka, Noriyuki , Zama, Hideo
- 申请人: HITACHI, LTD.
- 申请人地址: 6, Kanda Surugadai 4-chome Chiyoda-ku, Tokyo JP
- 专利权人: HITACHI, LTD.
- 当前专利权人: HITACHI, LTD.
- 当前专利权人地址: 6, Kanda Surugadai 4-chome Chiyoda-ku, Tokyo JP
- 代理机构: Altenburg, Udo, Dipl.-Phys.
- 优先权: JP31445094 19941219; JP31794794 19941221
- 主分类号: G11B5/008
- IPC分类号: G11B5/008 ; G11B15/12 ; G11B15/473 ; G11B15/18 ; H04N5/782 ; H04N9/79
摘要:
An apparatus for recording and reproducing a digital video signal on and from a common recording medium by using the head configuration common to the conventional one while maintaining exchangeability with the current analog VTR. An analog video and audio signals are recorded and reproduced on and from an video track and an underlying deep-layer track, respectively, by means of magnetic heads (1a, 1b) and magnetic heads (2a, 2b). On the other hand, a digital video and audio signal is recorded and reproduced on and from two adjacent tracks by means of the magnetic heads (2a, 2b) for analog audio recording. During reproduction, an identification signal generating circuit (53) generates an identification signal for discriminating a recorded signal, and a control signal is PWM modulated with the identification signal and recorded on a control track by means of a magnetic head (4).
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