Tracking error measurement
    22.
    发明授权
    Tracking error measurement 失效
    跟踪误差测量

    公开(公告)号:US4351045A

    公开(公告)日:1982-09-21

    申请号:US166447

    申请日:1980-07-07

    IPC分类号: G11B3/06 G11B3/12 G11B3/10

    CPC分类号: G11B3/122 G11B3/06

    摘要: Method and apparatus for obtaining a measure of or relating to lateral tracking error at each of a plurality of predetermined radial distances from the spindle axis of phonographic turntable equipment that includes a spindle (13), a rotatable platter (14), and a pivotally mounted tonearm (11) to carry a cartridge-mounted stylus (12) via a separate or integral headshell (16). The apparatus comprises an alignment protractor (20, 120) placed on the platter for arcuate movement about the spindle axis, and a device (30, 130, 40) mounted on the tonearm in place of the cartridge or both the cartridge and headshell. The alignment protractor (20) is marked with a plurality of equi-angularly spaced radial lines indicative of differing tracking error values and a plurality of equi-spaced transverse straight lines crossing all the radial lines and intersecting at right angles the radial line indicative of zero tracking error. The device (30, 40) is marked with a distance scale comprising a main line (35, 45) directed at the offset angle with respect to the tonearm and intersected by equi-spaced distance marks corresponding to and/or defining different stylus points (whereby each distance mark defines a different value for the stylus overhang distance).

    摘要翻译: 用于获得与包括主轴(13),旋转盘(14)和枢转安装的旋转盘(14)的多个预定径向距离的多个预定径向距离中的横向跟踪误差的测量或涉及横向跟踪误差的方法和装置 (11)通过单独的或整体式的外壳(16)携带带盒安装的手写笔(12)。 该装置包括放置在盘片上的对准量角器(20,120),用于围绕主轴轴线的弓形运动;以及安装在tonearm上的装置(30,130,40),以代替暗盒或者盒和头壳两者。 对准量角器(20)用多个等角度间隔的径向线标记,表示不同的跟踪误差值,以及多个等距离的横向直线穿过所有的径向线并以直角相交,表示零点的径向线 跟踪错误。 标记设备(30,40)的距离刻度包括一个主线(35,45),该主线(35,45)指向相对于墨质的偏移角,并且与对应于和/或限定不同触控点的等间隔距离标记相交 由此每个距离标记定义了触针悬伸距离的不同值)。

    Audio reproducing apparatus for random access playback systems
    23.
    发明授权
    Audio reproducing apparatus for random access playback systems 失效
    用于随机访问播放系统的音频再现设备

    公开(公告)号:US3672687A

    公开(公告)日:1972-06-27

    申请号:US3672687D

    申请日:1969-05-26

    申请人: GEN ELECTRIC

    摘要: Audio playback apparatus is disclosed including a tone arm which is positioned electromagnetically to facilitate control thereof in accordance with the position of a turntable relative to the tone arm. The apparatus is particularly suited for random access retrieval of audio information from a record including a plurality of nested spirals each corresponding to items of information on a display or selection chart. An array of switches corresponding to individual items on the display and a position selector switch assembly operated by the position of the turntable relative to the tone arm cooperate to position the stylus of the tone arm in a spiral groove corresponding to the selected portion of the display.

    摘要翻译: 公开了音频播放装置,其包括按照电磁位置定位的音臂,以便于根据转台相对于音调臂的位置进行控制。 该装置特别适用于从包括多个嵌套螺旋的记录随机访问检索音频信息,每个对应的螺旋对应于显示或选择图表上的信息项。 对应于显示器上的各个物品的开关阵列和由转台相对于音调臂的位置操作的位置选择器开关组合件协调将音调臂的触针放置在对应于显示器的选定部分的螺旋槽中 。