利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

13 条记录 (耗时 0.018 秒)

    Receiving system for band-compression image signal
    4.
    发明授权
    Receiving system for band-compression image signal 失效
    带式压缩图像信号接收系统

    公开(公告)号：US4891699A

    公开(公告)日：1990-01-02

    申请号：US314088

    申请日：1989-02-23

    申请人： Masanori Hamada ,  Takeshi Inoue ,  Mitsuo Isobe ,  Yuichi Ninomiya ,  Yoshimichi Ohtsuka ,  Yoshinori Izumi

    发明人： Masanori Hamada ,  Takeshi Inoue ,  Mitsuo Isobe ,  Yuichi Ninomiya ,  Yoshimichi Ohtsuka ,  Yoshinori Izumi

    IPC分类号： H04N7/015 ,  H04N7/12

    CPC分类号： H04N7/125 ,  H04N7/015

    摘要： When the receiving system for a band-compression image signal receives a dropout signal representing a dropout portion of an image signal, an output of the third delay circuit of the temporal filter for motion detection processing, that is, motion information of an image signal, which precedes by one field, and a dropout signal activate the signal selection control circuit to produce an output signal for controlling the operation of the signal selection circuit, so that an output signal of the first delay circuit is selected for a static portion of an image, and an output signal of the dropout compensation circuit is selected for a moving portion of an image, so as to effect compensation control of the dropout portion of an image signal, thereby preventing deterioration of the quality of an image.

    摘要翻译： 当带式压缩图像信号的接收系统接收到表示图像信号的压差部分的压差信号时，用于运动检测处理的时间滤波器的第三延迟电路的输出，即图像信号的运动信息， 其前置一个场，并且一个丢失信号激活信号选择控制电路以产生用于控制信号选择电路的操作的输出信号，使得第一延迟电路的输出信号被选择用于图像的静态部分 ，并且为图像的运动部分选择压差补偿电路的输出信号，以便实现图像信号的压差部分的补偿控制，从而防止图像质量的劣化。

    Four phase PSK demodulator
    5.
    发明授权
    Four phase PSK demodulator 失效
    四相PSK解调器

    公开(公告)号：US4757272A

    公开(公告)日：1988-07-12

    申请号：US880836

    申请日：1986-07-01

    申请人： Yukihiro Okada ,  Yuichi Ninomiya ,  Yoshimichi Ohtsuka ,  Yoshinori Izumi ,  Sei'ichi Goushi

    发明人： Yukihiro Okada ,  Yuichi Ninomiya ,  Yoshimichi Ohtsuka ,  Yoshinori Izumi ,  Sei'ichi Goushi

    IPC分类号： H04L27/227 ,  H03D3/18 ,  H03D3/24 ,  H03K9/04 ,  H04L7/04

    CPC分类号： H04L27/2277

    摘要： A demodulator for regenerating and demodulating a carrier signal from a four-phase PSK received signal having a data symbol preamble and a fixed phase (one of four phases) of a particular time width using a synchronous detection type demodulating system (remodulation type demodulating system). The demodulator includes an orthogonal demodulating circuit and a remodulating circuit for regenerating a carrier signal which is the data signal during a preamble transmission period from a received modulated signal. The remodulating circuit includes a demodulator having an AFC circuit for detecting a frequency change using a narrow band filter, means for suppressing frequency changes of the four-phase PSK modulated signal received and means for rendering constant the frequency of the regenerated carrier signal passing through the narrow band filter.

    摘要翻译： 一种用于使用同步检测型解调系统（再调制型解调系统）从具有数据符号前导码和特定时间宽度的固定相位（四相一个）的四相PSK接收信号再生和解调载波信号的解调器， 。 解调器包括正交解调电路和再生电路，用于在从接收的调制信号的前导码传输周期期间再生作为数据信号的载波信号。 再调制电路包括具有用于使用窄带滤波器检测频率变化的AFC电路的解调器，用于抑制接收的四相PSK调制信号的频率变化的装置，以及用于使再生的载波信号的频率恒定的装置， 窄带滤波器。

    Divisionally time-compressed subsample transmission and motion-compensated reproduction system for a high definition color television picture signal
    6.
    发明授权
    Divisionally time-compressed subsample transmission and motion-compensated reproduction system for a high definition color television picture signal 失效
    用于高分辨率彩色电视图像信号的分时间压缩子采样传输和运动补偿再现系统

    公开(公告)号：US4745459A

    公开(公告)日：1988-05-17

    申请号：US33878

    申请日：1987-04-02

    申请人： Yuichi Ninomiya ,  Yoshimichi Ohtsuka ,  Yoshinori Izumi

    发明人： Yuichi Ninomiya ,  Yoshimichi Ohtsuka ,  Yoshinori Izumi

    IPC分类号： H04N7/12 ,  H04N11/24 ,  H04N11/02

    CPC分类号： H04N11/006 ,  H04N7/12

    摘要： A high definition color television picture signal is unified by time-axis compressed integration (TCI) and the bandwidth thereof is extremely narrowed by dot-interlace subsampling. As a result, a narrow band transmission picture signal accompanied with a control signal adapted to the restoration of the received original picture signal, which is suitable for satellite broadcast, can be obtained through a comparatively simple arrangement. The received narrow band transmission picture signal can be restored by the interpolation adapted respectively to the stationary picture and the motion picture under control of the control signal or the picture-motional information detected from the received picture signal in combination with the control signal, so that the original high definition can be sufficiently maintained through comparatively simple receiving equipment.

    摘要翻译： 高分辨率彩色电视图像信号通过时间轴压缩积分（TCI）统一，其带宽由点间隔二次采样极大地缩小。 结果，可以通过相对简单的布置来获得伴随适用于恢复接收到的原始图像信号的适合于卫星广播的控制信号的窄带传输图像信号。 控制信号或从接收到的图像信号检测到的图像运动信息与控制信号相结合，分别适应于静止图像和运动图像的接收窄带传输图像信号可以恢复，从而 通过比较简单的接收设备可以充分保持原有的高分辨率。

    Bandwidth compressed transmission system
    7.
    发明授权
    Bandwidth compressed transmission system 失效
    带宽压缩传输系统

    公开(公告)号：US4692801A

    公开(公告)日：1987-09-08

    申请号：US863232

    申请日：1986-05-14

    申请人： Yuichi Ninomiya ,  Yoshimichi Ohtsuka ,  Yoshinori Izumi ,  Sei'ichi Goushi

    发明人： Yuichi Ninomiya ,  Yoshimichi Ohtsuka ,  Yoshinori Izumi ,  Sei'ichi Goushi

    IPC分类号： H04N7/015 ,  H04N11/02 ,  H04N7/13

    CPC分类号： H04N11/02 ,  H04N7/0152

    摘要： In a bandwidth compressed transmission system in which a frequency band of a television signal of 2:1 interlace system is compressed, on an encoder side, by interfield offset subsampling at a first sampling frequency corresponding to a substantially upper limit frequency of the television signal and, after an output signal thus subsampled is applied to a LPF for passing a signal component having an aliased portion resulting from the interfield offset subsampling and having a cut-off frequency substantially equal to one half of the first sampling frequency, by interframe offset subsampling at a second sampling frequency lower than the first sampling frequency and higher than one half of the first sampling, so that a multiplexed subsampled transmission signal which does not include an aliased portion of reverse phase results from the interframe offset subsampling. When decoding, interframe interpolation processing of a multiplexed subsampled transmission signal is performed to obtain a signal for a still picture portion, while intrafield interpolation processing of the same transmission signal is performed to obtain a signal for a motion picture portion. An interframe difference of the transmission signal is detected to obtain a motion detection signal. The signals for still and motion picture are linearly mixed in accordance with the motion detection signal. Motion can be detected completely by utilizing an interframe difference. An arrangement of a receiver can be made simple and improves picture quality.

    摘要翻译： 在压缩2:1隔行扫描系统的电视信号的频带的带宽压缩传输系统中，在编码器侧通过对应于电视信号的实质上限频率的第一采样频率的场间偏移二次采样，以及 在将这样二次采样的输出信号应用于LPF之后，通过帧间偏移次采样来通过具有由场间偏移次采样得到的混叠部分的信号分量并具有基本上等于第一采样频率的一半的截止频率 第二采样频率低于第一采样频率并且高于第一采样的一半，使得不包括反相的混叠部分的多路复用二次采样传输信号来自帧间偏移次采样。 当解码时，执行多路复用二次采样发送信号的帧间插值处理，以获得用于静止图像部分的信号，同时执行相同发送信号的场内插值处理以获得运动图像部分的信号。 检测发送信号的帧间差异以获得运动检测信号。 用于静止和运动图像的信号根据运动检测信号被线性混合。 运动可以通过利用帧间差异来完全检测。 可以使接收机的布置简单并且提高图像质量。

    Sub-sample transmission system for improving picture quality in motional picture region of wide-band color picture signal
    8.
    发明授权
    Sub-sample transmission system for improving picture quality in motional picture region of wide-band color picture signal 失效
    子样本传输系统，用于提高宽带彩色图像信号运动图像区域的图像质量

    公开(公告)号：US5612748A

    公开(公告)日：1997-03-18

    申请号：US469425

    申请日：1995-06-06

    申请人： Seiichi Gohshi ,  Yoshinori Izumi ,  Masahide Naemura ,  Kouichi Yamaguchi

    发明人： Seiichi Gohshi ,  Yoshinori Izumi ,  Masahide Naemura ,  Kouichi Yamaguchi

    IPC分类号： H04N7/015 ,  H04N7/12 ,  H04N11/04 ,  H04N11/24 ,  H04N7/24

    CPC分类号： H04N11/006 ,  H04N11/048 ,  H04N7/0152 ,  H04N7/122

    摘要： In the case where a wide-band color picture signal provided for a high-definition television broadcasting is sub-sampled for narrow-band transmission, in comparison with a stationary picture signal which is applied with sub-sampling according to a sampling pattern circulated at every two frames, the color picture signal in motional picture regions, which is conventionally applied with line-offset sub-sampling at every field, has a lowered resolution. To improve the resolution concerned, color difference signals in motional picture regions are applied with inter-field offset sub-sampling together with band-limitation for preventing aliasing distortion accompanied with subsampling and signal processing including interpolation for reproduction, which are effected in a form completed at every frame. As for motional picture regions having small motion, a luminance signal is applied also with similar sub-sampling and similar signal processing. As a result, the overall picture quality of the reproduced motional color picture is improve by signal processing thus adapted for color pictures in motional picture regions.

    摘要翻译： 在为高频电视广播提供的宽带彩色图像信号被子采样以用于窄带传输的情况下，与根据在 每两帧通常在每个场应用线偏移次采样的运动图像区域中的彩色图像信号具有降低的分辨率。 为了提高相关分辨率，运动图像区域中的色差信号与带限制一起应用场间偏移子采样，以防止伴随二次采样的信号失真和包括用于再现的内插的信号处理，其以完成的形式 在每一帧。 对于具有小运动的运动图像区域，也应用相似的次采样和类似的信号处理的亮度信号。 结果，再现的运动彩色图像的整体图像质量通过适用于运动图像区域中的彩色图像的信号处理而得到改善。

    Automatic gain control device
    10.
    发明授权
    Automatic gain control device 失效
    自动增益控制装置

    公开(公告)号：US4963969A

    公开(公告)日：1990-10-16

    申请号：US314087

    申请日：1989-02-23

    申请人： Hiromu Kitaura ,  Mitsuo Isobe ,  Yuichi Ninomiya ,  Yoshimichi Ohtsuka ,  Yoshinori Izumi

    发明人： Hiromu Kitaura ,  Mitsuo Isobe ,  Yuichi Ninomiya ,  Yoshimichi Ohtsuka ,  Yoshinori Izumi

    IPC分类号： H04N5/04 ,  H04N5/52 ,  H04N7/015

    CPC分类号： H04N5/52

    摘要： Disclosed is an automatic gain control device which comprises: a first amplitude detection circuit for detecting an average amplitude value of a television video signal, a peak amplitude value of the same television video signal, or a value obtained by mixing the average amplitude value and the peak amplitude value with a predetermined mixing ratio; a second amplitude detection circuit for detecting an amplitude value of a vertical or horizontal synchronizing signal in the television video signal; an amplitude control circuit for controlling an amplitude of an input television video signal; a synchronization circuit for detecting a vertical synchronizing signal and a horizontal synchronizing signal in the television video signal so as to generate various pulses including a clock pulse synchronized with the input television video signal by controlling an oscillation frequency of an oscillation circuit; and a synchronization phase lock detection circuit for detecting whether the synchronization circuit has been pulled into synchronism with the input television video signal, so that the amplitude control circuit is controlled by an output of the second amplitude detection circuit when synchronization phase-lock is established while controlled by an output of the first amplitude detection circuit when the synchronization phase-lock comes out.

    摘要翻译： 公开了一种自动增益控制装置，包括：第一幅度检测电路，用于检测电视视频信号的平均振幅值，相同电视视频信号的峰值振幅值，或通过混合平均振幅值和 具有预定混合比的峰值振幅值; 第二振幅检测电路，用于检测电视视频信号中的垂直或水平同步信号的振幅值; 幅度控制电路，用于控制输入电视视频信号的幅度; 用于检测电视视频信号中的垂直同步信号和水平同步信号的同步电路，以通过控制振荡电路的振荡频率产生包括与输入电视视频信号同步的时钟脉冲的各种脉冲; 以及同步锁相检测电路，用于检测同步电路是否已被拉入与输入的电视视频信号同步，使得当建立同步锁相时，幅度控制电路由第二幅度检测电路的输出控制，而 当同步锁相出来时由第一幅度检测电路的输出控制。