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1. 发明授权

US5506733A Apparatus for recording and reproducing digital and analog video signals using two analog record/reproduce heads and two digital record/reproduce heads, respectively 失效
标题翻译：用于分别使用两个模拟记录/再现头和两个数字记录/再现头来记录和再现数字和模拟视频信号的装置
公开(公告)号：US5506733A
公开(公告)日：1996-04-09
申请号：US177169
申请日：1994-01-04
申请人： Soo K. Kim , Mun C. Joung , Yong H. Shin , Man C. Choi , Yoon S. Seoh , Soon K. Lim , Joong K. Joh
发明人： Soo K. Kim , Mun C. Joung , Yong H. Shin , Man C. Choi , Yoon S. Seoh , Soon K. Lim , Joong K. Joh
IPC分类号： G11B5/008 , G11B15/12 , G11B15/18 , H04N5/92 , H04N5/926 , H04N9/79 , G11B5/02
CPC分类号： G11B15/125 , G11B15/1875 , G11B5/0086 , G11B5/00878 , H04N5/92 , H04N5/926 , H04N9/7921
摘要： An apparatus for recording and reproducing digital/analog video signals including a single head drum attached with heads for processing analog video signals and heads for processing digital video signals, and switches performing switching operations on the basis of the kind of input video signals. The head drum is variable in speed, depending on the kind of input video signals. In accordance with the apparatus, both analog and digital signals can be recorded and reproduced by a single recording unit and a single reproducing unit both capable of varying in characteristic, based on a video signal received thereto. This provides a reduction in manufacture cost and a light, thin, simple and compact construction of the existing VCRs.
摘要翻译：一种用于记录和再现数字/模拟视频信号的装置，包括附接有用于处理模拟视频信号的磁头的单磁头磁鼓和用于处理数字视频信号的磁头的数字/模拟视频信号，以及基于输入视频信号的种类来执行切换操作。磁头鼓的速度可变，取决于输入视频信号的种类。根据该装置，模拟信号和数字信号都可以由能够根据接收到的视频信号而具有特性变化的单个记录单元和单个再现单元记录和再现。这减少了现有录像机的制造成本和轻薄，简单和紧凑的结构。

2. 发明授权

US5119245A Rotational phase detecting apparatus for head drum utilizing video heads 失效
标题翻译：旋转相位检测装置，用于使用视频头的磁头鼓
公开(公告)号：US5119245A
公开(公告)日：1992-06-02
申请号：US412842
申请日：1989-09-26
申请人： Yong H. Shin
发明人： Yong H. Shin
IPC分类号： G11B15/14 , G11B15/473
CPC分类号： G11B15/4731 , G11B15/14
摘要： A rotational phase detecting apparatus for a head drum utilizing a video head capable of directly detecting the rotational phase of the head drum for the reproducing signal of the video head without using an additional pulse generating head by disposing a permanent magnet facing the rotational direction of video heads. When video heads pass by the permanent magnet, positive pulses are generated from the video heads and the positive pulse signal of the first video head is applied to a phase detecting signal processing unit via a rotary transformer and the positive pulse signal of the second video head is converted into a negative pulse signal at the rotary transformer and applied to a phase detecting signal processing unit.
摘要翻译：一种用于头鼓的旋转相位检测装置，其使用能够直接检测用于视频头的再现信号的磁头鼓的旋转相位的视频头，而不使用附加的脉冲产生头，通过设置面向视频的旋转方向的永磁体头。当视频磁头通过永磁体时，从视频磁头产生正脉冲，第一视频磁头的正脉冲信号通过旋转变压器施加到相位检测信号处理单元，第二视频磁头的正脉冲信号在旋转变压器上转换为负脉冲信号，并施加到相位检测信号处理单元。

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