公开(公告)号：US3825949A

公开(公告)日：1974-07-23

申请号：US19948371

申请日：1971-11-17

Applicant: RCA CORP

Inventor： DEE PYLES G

IPC: G11B15/68 ,  G11B23/10

CPC classification number: G11B15/684

Abstract: A tape cartridge changer includes a plurality of tape cartridge receptacles which are each adapted to receive a tape cartridge and a movable structure which supports a portion of the changer playing mechanism. A movable mechanical stop is positioned adjacent each of the receptacles to block an inserted tape cartridge from being positioned in the path of travel of the movable structure. The movable structure as it moves toward each cartridge receptacle engages and moves the mechanical stop adjacent the cartridge receptacle away from its blocking position. This permits a tape cartridge in the cartridge receptacle to be brought into operative engagement with the portion of the tape changer playing mechanism supported by the movable structure. Detector means at each of the cartridge receptacles sense the presence or absence of a tape cartridge in the receptacle. As the movable structure moves between the different cartridge receptacles, a switch mechanism mounted on the movable structure is actuated by the detector means when a cartridge is sensed as being present in the receptacle. The switch mechanism is operable when actuated to stop the movable structure at a predetermined point for playing a cartridge in the receptacle.

Abstract translation: 磁带盒更换器包括多个磁带盒插座，每个磁带盒插座适于容纳带盒，以及可移动结构，其支撑更换器播放机构的一部分。 可移动机械止动件邻近每个容器定位，以阻止插入的带盒被定位在可移动结构的行进路径中。 当可移动结构朝向每个盒式存储器移动时，可移动结构使与盒式存储器相邻的机械式止动件远离其阻塞位置移动。 这允许盒式存储器中的带盒与由可移动结构支撑的带式更换器播放机构的部分操作接合。

公开(公告)号：US3825836A

公开(公告)日：1974-07-23

申请号：US26878772

申请日：1972-07-03

Applicant: RCA CORP

Inventor： DEE PYLES G

IPC: G04C21/28 ,  G04C23/00 ,  H03K17/28 ,  H04B1/16

CPC classification number: H03K17/28 ,  G04C21/28 ,  G04C23/00 ,  Y10T307/951

Abstract: A timed full alarm condition is delayed for a short period of subdued alarm, by connecting the timer output through a modified Schmidt trigger circuit to the full-alarm generator. At the same time the timer output is connected to the subdued alarm generator, without a delay mechanism. The delay feature is given by combining a charging circuit in the Schmidt triggering scheme. A transistor of the Schmidt circuit is used for analog processing of an alarm buzz tone signal as well as for outputting the trigger impulse. A renewed delay can be manually introduced by discharging the charging circuit without restoration of the timed switch to its quiescent condition. Recharging then commences a second cycle of delay with subdued alarm, then a repeated full-alarm. The invention is embodied in a clock radio, where personal subdued alarm is the radio playing, and the full alarm is amplified clipped line waveform reproduced as a buzz on the radio loudspeaker. The discharge switch gives a drowse facility, again with radio.

Abstract translation: 通过将定时器输出通过修改后的施密特触发电路连接到全报警发生器，定时完全报警条件延迟短时间的低报警。 同时，定时器输出连接到低调的报警发生器，没有延迟机制。