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1. 发明授权

US5124807A Dual deck videocassette recorder system 失效
标题翻译：双层录像带录像机系统
公开(公告)号：US5124807A
公开(公告)日：1992-06-23
申请号：US544333
申请日：1990-06-27
申请人： R. Terren Dunlap , John B. Berkheimer , C. Duane Woodmas
发明人： R. Terren Dunlap , John B. Berkheimer , C. Duane Woodmas
IPC分类号： G11B5/86 , G11B15/00 , G11B20/00 , G11B27/024 , G11B27/028 , G11B31/00 , H04N5/765 , H04N5/7826 , H04N5/94 , H04N9/793
CPC分类号： G11B20/0021 , G11B15/00 , G11B20/00086 , G11B27/028 , G11B31/006 , G11B5/86 , H04N5/765 , H04N5/78263 , H04N5/94 , H04N9/7933 , G11B2220/455 , G11B2220/90 , G11B2220/91 , G11B27/024
摘要： A videocassette deck and taping system includes two videocassette decks therefor (A and B) included within a single housing utilizing a common power supply, tuner, controls, and switching and control circuitry to enable simulataneous multiple functions using both decks and to also enable tape to tape duplication (dubbing) in a manner avoiding degradation of video information content, as well as additional function selection.
摘要翻译：录像带甲板和录音系统包括两个盒式录像带（A和B），其包含在单个外壳内，利用公共电源，调谐器，控制以及切换和控制电路，以实现使用两个卡座的同时多个功能，并且还能够使磁带磁带复制（配音），以避免视频信息内容的劣化，以及附加的功能选择。

2. 发明授权

US5194963A Dual deck videocassette recorder system 失效
标题翻译：双卡录像机系统
公开(公告)号：US5194963A
公开(公告)日：1993-03-16
申请号：US230181
申请日：1988-08-09
申请人： R. Terren Dunlap , John B. Berkheimer , C. Duane Woodmas
发明人： R. Terren Dunlap , John B. Berkheimer , C. Duane Woodmas
IPC分类号： G11B5/86 , G11B15/00 , G11B20/00 , G11B27/024 , G11B27/028 , G11B31/00 , H04N5/765 , H04N5/7826 , H04N5/91 , H04N5/94 , H04N9/793 , H04N9/83
CPC分类号： G11B20/0021 , G11B15/00 , G11B20/00086 , G11B27/028 , G11B31/006 , G11B5/86 , H04N5/765 , H04N5/78263 , H04N5/94 , H04N9/7933 , G11B2220/455 , G11B2220/90 , G11B2220/91 , G11B27/024
摘要： A videocassette deck and taping system includes two videocassette decks therefor (A and B) included within a single housing utilizing a common power supply, tuner, controls, and switching and control circuitry to enable simultaneous multiple functions using both decks and to also enable tape to tape duplication (dubbing) in a manner avoiding degradation of video information content, as well as additional function selection.
摘要翻译：录像带甲板和录音系统包括两个盒式录像带（A和B），其包含在单个外壳内，利用公共电源，调谐器，控制以及切换和控制电路，以使得能够同时使用两个卡座的多个功能，并且还能够使磁带磁带复制（配音），以避免视频信息内容的劣化，以及附加的功能选择。

3. 发明授权

US5177618A Dual deck VCR and duplicating circuit therefor 失效
标题翻译：双层录像机及其复用电路
公开(公告)号：US5177618A
公开(公告)日：1993-01-05
申请号：US546360
申请日：1990-06-29
申请人： R. Terren Dunlap , John R. Berkheimer , C. Duane Woodmas
发明人： R. Terren Dunlap , John R. Berkheimer , C. Duane Woodmas
IPC分类号： G11B5/027 , G11B15/00 , G11B15/02 , G11B15/10 , G11B15/467 , G11B20/00 , G11B27/024 , G11B27/028 , G11B31/00 , H04N5/765 , H04N5/7826 , H04N5/91 , H04N5/913
CPC分类号： G11B20/00688 , G11B15/00 , G11B15/023 , G11B20/00086 , G11B27/028 , G11B31/00 , H04N5/765 , H04N5/913 , G11B2220/455 , G11B2220/90 , G11B2220/91 , G11B27/024 , H04N2005/91314
摘要： A dual deck video cassette recorder, having first and second video decks in a common housing. Each deck has a plurality of heads and both of the decks can playback, and at least one of the decks can record. A switch arrangement is connected to both decks to provide for selective connections of video and audio signals between, and from the inputs to and outputs from, the two decks. A sensor detects the angular position of the heads of each deck to assure they are in phase prior to initiating recording. A mechanism corrects the angular position of the heads of at least one of the decks to assure the heads of each will be in the same angular phase prior to initiating recording. A circuit detects a copy protection signal on a tape in one deck during vertical blanking and the signal is located and timed so that it will not interfere with normal operation of the video signals, to produce a quality picture on a TV monitor or place information onto tape in one deck which provides a quality picture. A circuit is provided for ceasing, and preventing, any copying function being performed when the copy protection signal has been detected, and it also determines, after the copy protection signal has be detected, that the signals at both decks have been synchronized for a predetermined period of time.
摘要翻译：双层录像机，在共同的壳体中具有第一和第二视频甲板。每个甲板具有多个头部，并且两个甲板都可以回放，并且至少一个甲板可以记录。开关装置连接到两个甲板，以提供在两个甲板之间的输入和输出之间的视觉和音频信号的选择性连接。传感器检测每个甲板的头部的角度位置，以确保它们在开始记录之前处于同相状态。机构校正至少一个甲板的头部的角度位置，以确保在开始记录之前，每个头部的头部将处于相同的角度相位。一个电路在垂直消隐期间检测一个甲板上的磁带上的复制保护信号，并且信号被定位和定时，使得它不会干扰视频信号的正常操作，在电视监视器上产生质量图像或将信息放置在磁带在一个甲板提供了一个优质的图片。提供电路用于停止并防止在检测到复制保护信号时执行的任何复制功能，并且还在检测到复制保护信号之后确定两个卡座的信号已经被同步预定的一段的时间。

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