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    • 121. 发明授权
    • Disc search unit
    • DISC搜索单元
    • US3838861A
    • 1974-10-01
    • US24701372
    • 1972-04-24
    • VM CORP
    • HAMMOND RESTKOWSKI MARENT JMILLER C
    • G11B3/085G11B3/095G11B3/10
    • G11B3/0952G11B3/0857
    • The disclosure is directed to the mechanism for locating on, and reading out from, a flat disc record, by means of a pick-up needle, selected information which is recorded thereon. The overall controls for selecting and retrieving or reading out the desired parts of the recorded information, and for utilizing the information, are not a part of the present invention. The mechanism here disclosed and claimed is adapted to the performance, in sequence, of certain required mechanical operations and means for performing the same, some of which have utility in other fields such, for example, as record playing phonographs and the like.
    • 本公开涉及用于通过拾取针定位在平盘记录上和从其读出的选择信息的机构。 用于选择和检索或读出记录信息的期望部分以及利用该信息的总体控制不是本发明的一部分。 这里公开和要求保护的机构适应于某些所需的机械操作的顺序性能和用于执行该机械操作的装置,其中一些在其它领域中具有实用性,例如作为记录播放留声机等。
    • 122. 发明授权
    • Recording arm safety lifter
    • 记录ARM安全提示
    • US3814441A
    • 1974-06-04
    • US29095572
    • 1972-09-21
    • ARVIN IND INC
    • CRAGGS L
    • G11B21/12G11B5/54G11B19/04G11B19/20H04N5/781G11B3/10G11B5/00
    • G11B19/20G11B5/54G11B19/04H04N5/781
    • There is disclosed a disc type magnetic recording and playing system wherein a recording arm tracks over concentric circular tracks in a flexible magnetic disc. There is also disclosed apparatus for swinging the recording arm into position with the record/playback transducer centered within a given track, and a stepping motor for stepping the transducer from track to track. A safety lifting device is provided for prevention of excessive wear of any one track. The safety lifting device is under the control of a solenoid which in turn is energized through a timer. When any of several operating controls are activated the timer is set and the solenoid is energized. After a predetermined period of time, the timer deenergizes the solenoid, and the arm is raised automatically. Raising of the arm is accomplished by a spring which works against the solenoid so that there is always a positive arm lifting moment which in the absence of an energizing current to the solenoid, raises the arm. Thus ''''fail safe'''' operation is provided.
    • 公开了一种盘式磁记录和播放系统,其中记录臂跟踪在柔性磁盘中的同心圆形轨道上。 还公开了一种用于将记录臂摆放到位置,其中记录/重放换能器以给定的轨道为中心,以及步进电机,用于将传感器从轨道到轨道进行步进。 提供了一种用于防止任何一个轨道过度磨损的安全提升装置。 安全提升装置处于螺线管的控制之下,螺线管又通过定时器通电。 当多个操作控件中的任何一个被激活时,定时器被置位并且螺线管被通电。 在预定的时间段之后,定时器使螺线管断电,臂自动升高。 臂的升高是通过弹簧来实现的,该弹簧对螺线管施加作用,使得总是具有正的臂提升力矩,其在没有到螺线管的通电电流的情况下升高臂。 因此提供了“故障安全”操作。
    • 123. 发明授权
    • High-density capacitive information records and playback apparatus therefor
    • 高密度电容信息记录及其播放装置
    • US3783196A
    • 1974-01-01
    • US3783196D
    • 1971-03-22
    • RCA CORP
    • STANLEY T
    • G11B9/06G11B3/10G11B9/00G11B9/07H04N5/76H04N5/92G11B3/44
    • H04N5/92G11B9/00H04N5/7605H04N5/903
    • A high-density information record comprises a stamped thermoplastic (e.g., vinyl) disc having a constant-width spiral surface groove, the center-to-center spacing of successive closely spaced convolutions of the groove spiral being substantially constant and independent of the recorded information. The recorded information appears as an information track constituting variations in the geometry of the groove bottom along its length. Playback apparatus employs a stylus having a tip conformed to be received in the disc groove in engagement with smoothly curved side walls of groove. As a discsupporting turntable rotates, the stylus rides in the groove passing over successive dimension-varying information track elements in the groove bottom, which serve to vary the capacitance presented between a conductive electrode incorporated in the stylus tip and a reference conductor (e.g., a conductive surface of the disc-supporting turntable). The capacitance variations occurring during playback are translated into electrical signal variations by appropriate circuitry. Per illustrative embodiment, inexpensively replicated video disc of appreciable playing time is subject to playback by abovedescribed techniques.
    • 高密度信息记录包括具有恒定宽度的螺旋表面凹槽的冲压热塑性塑料(例如乙烯基)盘,凹槽螺旋的连续紧密间隔的卷绕的中心间距基本上是恒定的并且独立于所记录的信息 。 记录的信息显示为信息轨迹,其构成沿其长度的槽底的几何形状的变化。 播放装置采用具有尖端的触针,该笔尖被容纳在盘槽中,与凹槽的平滑弯曲的侧壁接合。 当盘支承的转盘旋转时,触控笔越过凹槽底部的连续的尺寸变化的信息轨道元件的凹槽中,该凹槽用于改变插入触针尖端的导电电极与参考导体之间的电容(例如, ,盘支承转盘的导电表面)。 播放期间发生的电容变化由适当的电路转换为电信号变化。 根据说明性实施例,通过上述技术对可观的播放时间的廉价复制视频盘进行回放。
    • 126. 发明授权
    • Light electric tone pickup
    • 轻便电动扒手
    • US3666896A
    • 1972-05-30
    • US3666896D
    • 1969-11-25
    • DUAL GERBRUDER STEIDINGER
    • LAUE ECKHARD
    • H04R23/00G11B3/10H04R5/00
    • H04R23/008
    • In a light electric tone pick-up, a tone arm, which comprises an immovable tone arm holding member which holds the tone arm at one end pivotally about a vertical and a horizontal axis. A light beam control is disposed at the other end of the tone arm and is connected with a sensing needle for a tone modulated groove. A light source is immovably disposed adjacent to the vertical tonearm pivot axis. A first and a second light guide is secured in the tone arm, and each is directed with the cross-sectional face of one of its ends towards the light-beam control member and terminates with the cross-sectional face of the other of its ends close to the horizontal and vertical tone arm pivot axis in a radial plane, disposed spaced apart from each other, to the vertical tone arm pivot axis. Two lightelectric transmitters are immovably disposed adjacent the vertical tone-arm pivot axis and at a close distance opposite the cross-sectional faces of the light guides. A third light guide is secured in the tone arm and is directed with one of its ends towards the light-beam control member and terminates with the cross-sectional face of the other of its ends close to the horizontal and vertical tone arm pivot axis in a radial plane to the vertical tone arm swinging axis. Also, a fourth light guide is directed with one of its ends towards said light source and terminates with the other of its ends at a slight distance opposite the cross-sectional face of the fourth light guide.
    • 在一种轻质的电动式拾音器中,一种音色臂,包括一个不可移动的音调臂保持构件,该音调臂保持构件在一端围绕垂直和水平轴线枢转地保持音调臂。 光束控制设置在色调臂的另一端,并与用于色调调制凹槽的感测针连接。 光源不可靠地设置在垂直音臂枢转轴线附近。 第一和第二光导被固定在色调臂中,并且每个光导管的一端的横截面朝向光束控制构件,并且终止于其另一端的横截面 靠近水平和垂直色调臂的枢转轴线在径向平面中彼此间隔开设置到垂直色调臂枢转轴线。 两个光电发射器不可靠地设置在垂直音臂枢转轴线附近并且在与光导的横截面相对的近距离处。 第三光导被固定在色调臂中,并且其一个端部朝向光束控制构件引导,并且终止于其另一端的横截面靠近水平和垂直色调臂枢转轴线 垂直音臂摆动轴的径向平面。 此外,第四导光体的一端朝向所述光源,并以与第四导光体的横截面相对的稍微距离的另一端终止。
    • 128. 发明授权
    • Pickup arms
    • 扒手
    • US3645541A
    • 1972-02-29
    • US3645541D
    • 1969-03-17
    • ALASTAIR JOHN ROBERTSON AIKMAN
    • STEYNING ALASTAIR JOHN ROBERTS
    • G11B3/14G11B3/20G11B3/10
    • G11B3/14G11B3/20
    • This invention relates to an improved phonograph pickup arm assembly affording a wide range of adjustments. In particular, the arm includes means for adjusting playing weight in which variation of playing weight is accompanied by automatic adjustment of a force correcting the side thrust of skating force at the stylus. The correcting force is produced by inclination of the pivotal axis of the arm by an angular amount about which produces an appropriate horizontally resolved part of the vertical force of the stylus. The pickup arm can be unplugged towards its inward end.
    • 本发明涉及提供宽范围调节的改进的留声机拾音臂组件。 具体而言,该手臂包括用于调节播放重量的装置,其中播放重量的变化伴随着修正触笔上滑冰力的侧推力的力的自动调节。 校正力是通过臂的枢转轴线的倾斜度产生一个角度量,围绕这个角度量产生触针的垂直力的适当水平分辨的部分。 拾取臂可以朝向其内端拔掉。