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公开(公告)号：US4180802A
公开(公告)日：1979-12-25
申请号：US885572
申请日：1978-03-13
CPC分类号： G11B17/228 , G11B19/02 , G11B27/002 , G11B2220/20
摘要： An automatic selector unit for repetitively actuating an automatic phonograph to play randomly selected records includes a first timer for measuring the elapsed time since a previous play and a continuously running second timer for generating periodic pulses. The unit actuates the scanning mechanism of the phonograph after a predetermined elapsed time to bring different records successively into position for play and thereafter actuates the player mechanism on the next pulse from the second timer to play the record then in position for play.
摘要翻译： 用于重复地启动自动留声机以播放随机选择的记录的自动选择器单元包括用于测量从先前播放起经过的时间的第一定时器和用于产生周期性脉冲的连续运行的第二定时器。 在预定的经过时间之后，该单元启动留声机的扫描机构，以使不同的记录连续地进入播放位置，然后在来自第二定时器的下一个脉冲上启动播放机构，以播放记录然后在播放位置。
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公开(公告)号：US3964025A
公开(公告)日：1976-06-15
申请号：US526098
申请日：1974-11-22
CPC分类号： G11B27/002 , G11B17/228 , G11B2220/20
摘要： A solid state search unit for use in an automatic phonograph system in which phonograph selections are identified by three digit selection identification numbers, and which system includes a record magazine, a playing mechanism and a plurality of user-actuated remote selectors. In its normal mode of operation, the search unit, in cyclical fashion, searches memory locations corresponding to the respective selections offered for a play signal and, when such a signal is found, erases said play signal, causes the corresponding selection to be played, and transmits to the remote selectors a signal representing the selection identification number of the selection being played, or, if no play signal is found in the memory, stops the search. In its selective mode operation, the search unit, in response to a signal from a remote selector representing the selection identification number of a user's selection choice, stores a play signal in the corresponding memory location and restarts the normal mode search cycle.
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