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12 条记录 (耗时 0.014 秒)

    Offset compensation circuit
    1.
    发明授权
    Offset compensation circuit 失效
    偏移补偿电路

    公开(公告)号：US4965867A

    公开(公告)日：1990-10-23

    申请号：US234874

    申请日：1988-08-22

    申请人： Masami Tsuchida ,  Ichiro Miyake ,  Tokihiro Takahashi ,  Shinichi Wakumura ,  Yoshimi Iso ,  Takao Arai ,  Hiroo Okamoto

    发明人： Masami Tsuchida ,  Ichiro Miyake ,  Tokihiro Takahashi ,  Shinichi Wakumura ,  Yoshimi Iso ,  Takao Arai ,  Hiroo Okamoto

    IPC分类号： H03M1/02 ,  H03M1/06 ,  H03M1/10 ,  H04L25/06

    CPC分类号： H03M1/1023 ,  H03M1/0607 ,  H04L25/067 ,  H03M1/02

    摘要： An offset compensation circuit for compensating a DC offset which occurs in a circuit line including an A/D converter or an A/D and D/A converter in which not only the polarity bit of digital data but also information concerning the amplitude of an analog input signal are applied to an integrator to precisely compensate an offset voltage in a circuit line. The level of a proper offset compensation voltage is provided even when an input analog signal such as a music signal is absent, and when an A/D and D/A converter is provided which can perform both A/D conversion and D/A conversion the DC offset can be precisely compensated shortly after the change of the mode from D/A conversion to A/D conversion.

    摘要翻译： 一种偏移补偿电路，用于补偿在包括A / D转换器或A / D和D / A转换器的电路线中发生的DC偏移，其中不仅数字数据的极性位，而且还涉及与模拟 输入信号被施加到积分器以精确地补偿电路线路中的偏移电压。 即使没有诸如音乐信号的输入模拟信号，并且当提供可以执行A / D转换和D / A转换的A / D和D / A转换器时，也提供适当的偏移补偿电压的电平 在将模式从D / A转换改变为A / D转换之后，DC偏移可以很快精确地补偿。

    Apparatus for recording and reproducing digital signals using a helical scan
    2.
    发明授权
    Apparatus for recording and reproducing digital signals using a helical scan 失效
    使用螺旋扫描记录和再现数字信号的装置

    公开(公告)号：US4930031A

    公开(公告)日：1990-05-29

    申请号：US270336

    申请日：1988-11-14

    申请人： Shinichi Nagahara ,  Tomoyuki Suzuki ,  Tomoyasu Yamada ,  Tokihiro Takahashi ,  Ichiro Miyake

    发明人： Shinichi Nagahara ,  Tomoyuki Suzuki ,  Tomoyasu Yamada ,  Tokihiro Takahashi ,  Ichiro Miyake

    IPC分类号： G11B5/008 ,  G11B15/18 ,  G11B20/10 ,  G11B27/10 ,  G11B27/30

    CPC分类号： G11B20/10527 ,  G11B15/1875 ,  G11B27/107 ,  G11B27/3063 ,  G11B5/0086 ,  G11B2220/90 ,  G11B2220/913

    摘要： An apparatus for recording and reproducing digital signals using a helical scan in which a drum of reduced diameter is employed without changing the tape format. Two heads are mounted on a drum at the same height in opposition to each other with a product of the diameter D of the drum and the wrap-around angle of the tape with respect to the rotary drum being constant while the speed of the drum is increased to a speed N times higher than a predetermined speed. One of the heads is mounted higher than the other by a distance of (1-1/N)P to provide a step, and the other head being is mounted at a position an angle behind the position at which the other head directly opposes the one of the heads, which angle is defined by: ##EQU1## where L is the track length in the tape format used when the rotary drum rotates at the predetermined rotational speed, .THETA. is the track angle, P is the track pitch, and C is a constant dependent on the drum diameter D and the wrap-around angle. Methods for performing high speed searches with this apparatus are also disclosed.

    摘要翻译： 一种用于使用螺旋扫描来记录和再现数字信号的装置，其中采用直径减小的滚筒而不改变磁带格式。 两个头部以相同的高度彼此相对地安装在滚筒上，鼓的直径D与卷筒相对于旋转滚筒的卷绕角恒定，而滚筒的速度为 增加到比预定速度高N倍的速度。 其中一个头部被安装得高于另一个距离（1-1 / N）P，以提供一个台阶，另一个头部被安装在另一个头部直接与其相对的位置 其中一个头，哪个角度由以下定义：其中L是当旋转鼓以预定旋转速度旋转时使用的磁带格式的轨道长度，THETA是轨道角度，P是轨道间距，C 取决于鼓径D和卷绕角度是一个常数。 还公开了使用该装置进行高速搜索的方法。

    PCM signal reproducing device
    4.
    发明授权
    PCM signal reproducing device 失效
    PCM信号再现装置

    公开(公告)号：US4943964A

    公开(公告)日：1990-07-24

    申请号：US228415

    申请日：1988-08-05

    申请人： Yuji Hatanaka ,  Hiroo Okamoto ,  Shin-ichi Wakumura ,  Ichiro Miyake ,  Shunichiro Sakamoto

    发明人： Yuji Hatanaka ,  Hiroo Okamoto ,  Shin-ichi Wakumura ,  Ichiro Miyake ,  Shunichiro Sakamoto

    IPC分类号： G11B20/10 ,  G11B20/18

    CPC分类号： G11B20/10527 ,  G11B20/1809 ,  G11B20/1876

    摘要： PCM signals belonging to a first reproduction channel and a second reproduction channel and grouped into odd number data and even number data are previously recorded on a recording medium having a plurality of tracks in the form of frames each including at least a set of a first track and a second track. In the operation of reproducing the recorded PCM data, the PCM data reproduced by reproduction heads are stored in accordance with a first control signal, errors in the stored reproduced data are detected in accordance with a second control signal, the numbers of errors are counted, comparison is made between the error number of the odd number data and that of the even number data of the first channel and of the second channel, respectively, and the data which has been judged to include a larger number of errors are replaced by interpolated data and finally the interpolated data are mute-processed at the boundary between adjacent frames.

    摘要翻译： 属于第一再现频道和第二再现频道并被分组为奇数数据和偶数数据的PCM信号被预先记录在具有帧形式的多个轨道的记录介质上，每个轨道至少包括一组第一轨道 和第二轨道。 在再现记录的PCM数据的操作中，根据第一控制信号存储由再现头再现的PCM数据，根据第二控制信号检测存储的再现数据中的错误，对错误数进行计数， 在奇数数据的误差数与第一通道和第二通道的偶数数据的错误数量之间分别进行比较，并且被判断为包含较大数量的错误的数据被插值数据 最后内插数据在相邻帧之间的边界进行静音处理。

    Track position correction for a helical scan magnetic playback
    5.
    发明授权
    Track position correction for a helical scan magnetic playback 失效
    轨道位置校正用于螺旋扫描磁回放

    公开(公告)号：US4719525A

    公开(公告)日：1988-01-12

    申请号：US853291

    申请日：1986-04-17

    申请人： Tsunao Hasegawa ,  Ichiro Miyake ,  Ryuichiro Yoshimura

    发明人： Tsunao Hasegawa ,  Ichiro Miyake ,  Ryuichiro Yoshimura

    IPC分类号： G11B5/588 ,  G11B5/58

    CPC分类号： G11B5/588

    摘要： A control circuit for a helical scan playback, in which a rotary head is moved transversely by a varying amount. The transverse movement can be either a multi-valued tracking position error correction signal or a saw-tooth waveform, effective during a location data strip, for compensating for the fast movement of the tape during a scan operation.

    摘要翻译： 一种用于螺旋扫描回放的控制电路，其中旋转头横向移动不同量。 横向移动可以是在位置数据条带期间有效的多值跟踪位置误差校正信号或锯齿波形，用于补偿扫描操作期间带的快速移动。

    IMAGE DISPLAY DEVICE
    6.
    发明申请
    IMAGE DISPLAY DEVICE 审中-公开
    图像显示设备

    公开(公告)号：US20100225564A1

    公开(公告)日：2010-09-09

    申请号：US12279901

    申请日：2007-02-13

    申请人： Isao Tomisawa ,  Masaru Ishikawa ,  Ichiro Miyake

    发明人： Isao Tomisawa ,  Masaru Ishikawa ,  Ichiro Miyake

    IPC分类号： G09G5/00

    CPC分类号： G02B27/2278 ,  G02B27/2221 ,  G06F2203/04101 ,  H04N13/395 ,  H04N13/398

    摘要： An image display device includes plural display elements with display screens on which two-dimensional images are displayed. Optical paths of display light for forming the two-dimensional images are disposed to overlap each other. An image transmission panel is provided on the optical paths for transmitting the display light to display the two-dimensional images in a space on a side opposite to the display screens. An image pickup element is integrated with the display screens of the display element or provided in the vicinity of the display screens for picking up images of objects entering the space through the display panel. The image display device has a position specifying element for specifying positions of the picked-up objects in accordance with results of the images picked up by the image pickup element, and an image control element for controlling the display element to switch the two-dimensional images based on the specified positions.

    摘要翻译： 图像显示装置包括具有显示屏幕的多个显示元件，二维图像被显示在该显示屏幕上。 用于形成二维图像的显示光的光路被设置为彼此重叠。 图像传输面板设置在用于传送显示光的光路上，以在与显示屏相对的一侧的空间中显示二维图像。 图像拾取元件与显示元件的显示屏集成在一起，或者设置在显示屏附近，用于拾取通过显示面板进入空间的物体的图像。 图像显示装置具有用于根据由图像拾取元件拾取的图像的结果来指定拍摄对象的位置的位置指定元件，以及用于控制显示元件以切换二维图像的图像控制元件 基于指定的位置。