-
公开(公告)号：EP0049946A2
公开(公告)日：1982-04-21
申请号：EP81304124.1
申请日：1981-09-09
发明人： Ostroff, Arthur
CPC分类号： G11B21/081 , G11B3/0952
摘要： An initialization apparatus for a signal reproducing apparatus having a transducer (18) scanning a plurality of record tracks (16) on a record medium (12) where the position of the transducer (18) is controlled by a stepper motor (22) having fewer steps than the number of record tracks (16) required to be covered. A physical stop (28 or 30) is provided the transducer (18) near a selected "home" record track at one edge of the plurality of record tracks (16). A current selector supplies the phase windings of the stepper motor (22) with a reduced amplitude current during an initialization position. This enables a transducer controller to step the stepper through a sequence of steps under reduced current to the phase windings of the stepper motor (22) until the physical stop (28 or 30) is contacted, thus ensuring knowledge of the initialization of the transducer (18) at the "home" record track.
-
公开(公告)号：EP0023224A1
公开(公告)日：1981-02-04
申请号：EP79901577.1
申请日：1979-11-26
CPC分类号： G11B3/08545
摘要： An automatic returning mechanism comprises a turn- table drive motor (18) having a turntable shaft (18a) and a pinion gear (20), a large gear (2), a return plate (8), linking pawls (4), (5), a slide lever (12), and a microswitch (21) for the motor (18) and a base plate (1). When the base plate (1) is merely mounted on a record player cabinet and the slide lever (12) is connected at one end thereof to an actuator (16) mounted at a tone arm shaft (15), a record player is extremely readily assembled completely. When the pinion gear (20) mounted to the turntable shaft (18a) is merely engaged with a boss (19a) provided at the turntable (19), the record player cabinet can be reduced in its thickness in a device for playing the record player.
摘要翻译： 一种自动返回机构包括具有转台轴（18a）和小齿轮（20）的转盘驱动马达（18），大齿轮（2），回转板（8），连接爪（4），（5） ，用于马达（18）的滑动杆（12）和微动开关（21）和基板（1）。 当基板（1）仅安装在记录播放器机壳上并且滑动杆（12）的一端连接到安装在音调臂轴（15）上的致动器（16）时，记录播放器非常容易地组装 完全。 当安装在转台轴（18a）上的小齿轮（20）仅与设置在转盘（19）上的凸台（19a）接合时，可以在用于播放唱机的装置中减轻其记录播放机的厚度 。
-
公开(公告)号：EP0049946B1
公开(公告)日：1984-10-31
申请号：EP81304124.1
申请日：1981-09-09
发明人： Ostroff, Arthur
CPC分类号： G11B21/081 , G11B3/0952
-
公开(公告)号：EP0049946A3
公开(公告)日：1982-12-08
申请号：EP81304124
申请日：1981-09-09
发明人： Ostroff, Arthur
CPC分类号： G11B21/081 , G11B3/0952
摘要： An initialization apparatus for a signal reproducing apparatus having a transducer (18) scanning a plurality of record tracks (16) on a record medium (12) where the position of the transducer (18) is controlled by a stepper motor (22) having fewer steps than the number of record tracks (16) required to be covered. A physical stop (28 or 30) is provided the transducer (18) near a selected "home" record track at one edge of the plurality of record tracks (16). A current selector supplies the phase windings of the stepper motor (22) with a reduced amplitude current during an initialization position. This enables a transducer controller to step the stepper through a sequence of steps under reduced current to the phase windings of the stepper motor (22) until the physical stop (28 or 30) is contacted, thus ensuring knowledge of the initialization of the transducer (18) at the "home" record track.
-
-
-
搜索结果
4 条记录 (耗时 0.006 秒)
