发明授权
US06363210B1 Communication system for encrypted data and apparatus for selectively recording and reproducing received analog signal and received digital signal
有权
用于加密数据的通信系统和用于选择性地记录和再现所接收的模拟信号和接收的数字信号的装置
- 专利标题： Communication system for encrypted data and apparatus for selectively recording and reproducing received analog signal and received digital signal
- 专利标题（中）： 用于加密数据的通信系统和用于选择性地记录和再现所接收的模拟信号和接收的数字信号的装置
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申请号： US09270766申请日： 1999-03-17
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公开(公告)号： US06363210B1公开(公告)日： 2002-03-26
- 发明人: Hitoaki Owashi , Takaharu Noguchi , Hiroo Okamoto , Kyoichi Hosokawa , Kazuhiko Yoshizawa , Nobutaka Amada , Naozumi Sugimura , Hiroaki Tachibana , Hiroyuki Hayakawa
- 申请人： Hitoaki Owashi , Takaharu Noguchi , Hiroo Okamoto , Kyoichi Hosokawa , Kazuhiko Yoshizawa , Nobutaka Amada , Naozumi Sugimura , Hiroaki Tachibana , Hiroyuki Hayakawa
- 优先权： JP6-201757 19940826; JP6-214009 19940907; JP6-264877 19941028
- 主分类号： H04N592
- IPC分类号： H04N592
摘要：
A communication system has an analog signal broadcasting station for transmitting an analog signal, a digital signal broadcasting station for transmitting a digital signal and a receiving unit for receiving the analog signal from the analog signal broadcasting station and the digital signal from the digital signal broadcasting station. The receiving unit has a recording and reproducing unit for selectively recording one of received analog and digital signals. The recording and reproducing unit has heads for analog signal each having a predetermined azimuth angle and operative to record an analog signal and heads for digital signal each having an azimuth angle larger than that of the analog signal head and operative to record a digital signal, and performs selective recording and reproduction of the analog signal and the digital signal on and from a recording medium.
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