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1. 发明授权

US3679842A Method and apparatus for preparing copies or duplicates of wide band record carriers on which signals are recorded 失效
标题翻译：用于准备记录信号的宽带记录载体的复制或复制的方法和装置
公开(公告)号：US3679842A
公开(公告)日：1972-07-25
申请号：US3679842D
申请日：1969-11-10
申请人： JAHANGIR M AHY
发明人： AHY JAHANGIR M
IPC分类号： G06K1/14 , G11B5/86
CPC分类号： G11B5/86 , G06K1/14
摘要： This invention provides a method and apparatus for preparing duplicates of wide band record carriers on which signals of a continuous program are recorded in a hundred or more track sections arranged side-by-side across the width of the band and generally parallel to the length of the band, the track sections being separate and parallel to the length of the band or being made continuous either by arranging them in a helical path inclined slightly to the length of the band or by arranging them parallel to the length of the band and interconnecting them by inclined sections so that continuous reproduction is possible. Such recordings have a playing time of several hours. The method and apparatus herein described employ multiple playback heads past which the master wide band record, which may be in the form of an endless loop provided with a length of blank band between the ends of the track sections, is fed, and multiple recording heads respectively energized by the corresponding one of the playback heads and past which a copy band is fed, whereby the track sections may be duplicated simultaneously. The heads may be staggered along the paths of the respective bands and may, where the track sections are made continuous, follow tracking paths so that the duplicates have the track sections recorded thereon as a continuous program corresponding to the recording on the master wide band record being copied. By means of the invention the duplicates of the master recordings can be produced quickly and economicaly.
摘要翻译：本发明提供了一种用于制备宽带记录载体的重复的方法和装置，其上连续节目的信号被记录在沿带的宽度并排布置的一百个或更多个轨道部分中，并且大致平行于带，轨道部分是分离的并且平行于带的长度或者通过将它们布置在与带的长度稍微倾斜的螺旋路径中或通过将它们平行于带的长度并将它们互连通过倾斜部分使得连续再现成为可能。这样的录音具有几个小时的播放时间。

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