公开(公告)号：US5285037A

公开(公告)日：1994-02-08

申请号：US866694

申请日：1992-04-10

申请人： Antoni S. Baranski ,  David N. Larkins ,  Thomas J. Heath ,  David W. Thompson

发明人： Antoni S. Baranski ,  David N. Larkins ,  Thomas J. Heath ,  David W. Thompson

IPC分类号： H01H13/02 ,  H01H13/70 ,  H01H9/16

CPC分类号： H01H13/70 ,  H01H13/023

摘要： An illuminated dome type switch for use on a control panel having a support base and suitable circuitry for interconnecting various components making up the panel is disclosed herein. This switch includes a light source and a dome, both of which are supported on the base of the panel and the latter of which is resiliently movable between a biased OFF position and a depressed ON position. The switch also includes a keycap having an upper portion through which at least some light can pass, and a bottom outer periphery including a dome actuator. The keycap is supported directly over the light source and to one side of the dome for movement between a biased OFF position so as not to depress the dome and a depressed ON position for causing the actuator to depress the dome in order to move the latter to its on position, whereby to turn on the light source by means of circuitry forming part of the control panel and a suitable source of power and thereby illuminate the upper portion of the keycap. In the embodiments disclosed herein, the bottom outer periphery of the keycap also includes one or more fulcrums to aid the actuator in depressing the dome.

摘要翻译： 本文公开了一种在具有支撑基座的控制面板上使用的照明圆顶型开关和用于互连构成面板的各种组件的适当电路。 该开关包括光源和圆顶，它们都被支撑在面板的基部上，后者可在偏压关闭位置和凹陷的接通位置之间弹性移动。 该开关还包括具有至少一些光通过的上部的键帽和包括圆顶致动器的底部外周边。 键帽直接支撑在光源和圆顶的一侧之间，用于在偏压关闭位置之间移动，以便不踩下穹顶和沮丧的ON位置，以使致动器按压穹顶以将其移动到 其打开位置，由此通过形成控制面板的一部分的电路和适当的电源来打开光源，从而照亮键帽的上部。 在本文公开的实施例中，键帽的底部外周边还包括一个或多个支点，以帮助致动器按压穹顶。

公开(公告)号：US5189355A

公开(公告)日：1993-02-23

申请号：US866695

申请日：1992-04-10

申请人： David N. Larkins ,  Glenn T. Yoshida ,  Thomas L. Helmers

发明人： David N. Larkins ,  Glenn T. Yoshida ,  Thomas L. Helmers

IPC分类号： G11B15/02 ,  G11B15/10 ,  G11B15/18 ,  G11B19/00 ,  G11B27/024 ,  G11B27/028

CPC分类号： G11B19/00 ,  G11B15/026 ,  G11B15/103 ,  G11B15/1875 ,  G05B2219/23053 ,  G05B2219/23379 ,  G05B2219/35459 ,  G05B2219/37023 ,  G05B2219/37396 ,  G11B2220/90 ,  G11B27/024 ,  G11B27/028 ,  H01H2003/008

摘要： An apparatus for controlling conditions in response to an operator input, the apparatus including a rotary knob coupled to the shaft of the rotor of a stepper motor having first and second stator windings, in quadrature, with each winding being center tap grounded to provide first and second winding portions for each winding. One pair of first winding portions are used for providing pulse inputs to a microprocessor on rotation of the knob, in either direction, via a pulse control system, with the microprocessor providing command signals to a braking control system, which includes a direct current power control source, which may be either a voltage or current control source. The power control source, in turn is in circuit relation with the pair of second winding portions. On command of the processor, a force or torque is applied to the rotor, by means of energization of the other pair of winding portions, with the force being in opposition to the direction of rotation of the knob, the force being in proportion to the applied power. Under control of a microprocessor, the force may be intermittently applied to simulate a mechanical detent arrangement, or a constant force for braking, either of which provides tactile feedback to the operator.

公开(公告)号：US4532557A

公开(公告)日：1985-07-30

申请号：US483326

申请日：1983-04-08

申请人： David N. Larkins

发明人： David N. Larkins

IPC分类号： G11B20/10 ,  G06F13/38 ,  G11B27/32 ,  H03M9/00 ,  G11B5/06 ,  G11B27/14 ,  H04N5/78

CPC分类号： G06F13/38 ,  G11B27/323 ,  H03M9/00 ,  G11B2220/90

摘要： A programmable time code generator utilizes a synchronous parallel-to-serial data converter for conversion of time code in parallel form into serial form. The resulting longitudinal time code is suitable for recording on magnetic tape in synchronism with an information signal. The time code generator can be readily adapted for various video recording formats, such as NTSC, PAL, PAL-M, SECAM, etc., as well as for synchronous time code generation in other types of recording. In addition, the frequency of the generated longitudinal time code can be changed in a simple manner to be adapted for recording at various tape speeds which are different from the normal playback speed.

摘要翻译： 可编程时间码发生器利用同步并行 - 串行数据转换器将并行形式的时间码转换为串行形式。 所得到的纵向时间码适合于与信息信号同步地在磁带上记录。 时间码发生器可以容易地适用于诸如NTSC，PAL，PAL-M，SECAM等的各种视频记录格式，以及用于其它类型的记录中的同步时间码生成。 此外，所生成的纵向时间码的频率可以以简单的方式改变，以便适应于以不同于正常重放速度的各种磁带速度的记录。