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公开(公告)号：US4779131A
公开(公告)日：1988-10-18
申请号：US889224
申请日：1986-07-25
申请人： Kunio Matsumoto , Tadao Fujita , Kenji Takanashi , Yutaka Tanaka , Toshiro Ohmura , Taiichiro Kurita , Yoshimichi Ohtsuka , Taiji Nishizawa , Yuichi Ninomiya
发明人： Kunio Matsumoto , Tadao Fujita , Kenji Takanashi , Yutaka Tanaka , Toshiro Ohmura , Taiichiro Kurita , Yoshimichi Ohtsuka , Taiji Nishizawa , Yuichi Ninomiya
CPC分类号： H04N5/144 , G06T7/2053
摘要： In an apparatus for detecting movement of a television image in response to frame difference data corresponding to a difference between present frame data and previous frame data, a video signal is divided into a plurality of segmental areas for each frame, a pixel or picture element is selected to represent each of the segmental areas, frame difference data are produced for each of the segmental areas by calculating differences in the position or coordinates of a pixel representative of a segmental area of a previous frame from the respective picture element of the corresponding segmental area in the present frame, and each of the calculated differences smaller than a predetermined magnitude, and which would be characteristic of a stationary background portion of the television image, is omitted from the frame difference data. This is effective to improve the movement vector detection accuracy. The apparatus has a circuit for zeroing the frame difference data, and thereby improving, the movement vector detection reliability when the number of the calculated differences omitted from the frame difference data exceeds a predetermined value.
摘要翻译： 在用于根据与当前帧数据和先前帧数据之间的差对应的帧差数据来检测电视图像的移动的装置中，视频信号被划分成每个帧的多个分段区域，像素或像素是 被选择为表示每个分段区域，通过计算代表先前帧的分段区域的像素的位置或坐标的差异，从而对于每个分段区域产生帧差数据，该像素与相应分段区域的相应像素 在帧差中，从帧差数据中省略计算出的差异小于规定大小，并且将是电视图像的静止背景部分的特征的各个。 这对于提高运动矢量检测精度是有效的。 该装置具有用于使帧差分数据归零的电路，从而提高当从帧差数据中省略的计算出的差异的数量超过预定值时的运动矢量检测可靠性。
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公开(公告)号：US4663665A
公开(公告)日：1987-05-05
申请号：US814493
申请日：1985-12-30
申请人： Yutaka Tanaka , Taiji Nishizawa , Yuichi Ninomiya , Toshiro Ohmura , Taiichiro Kurita , Yoshimichi Ohtsuka
发明人： Yutaka Tanaka , Taiji Nishizawa , Yuichi Ninomiya , Toshiro Ohmura , Taiichiro Kurita , Yoshimichi Ohtsuka
IPC分类号： H04N7/01
CPC分类号： H04N7/014
摘要： The picture quality deterioration such as judder caused by TV frame number conversion can be mitigated by selecting either the stationary original picture signal or the motion-compensated interpolated picture signal based on the most adaptive motion vector corresponding to the smallest interframe difference between the original picture signal and the motion-compensated picture signals based on the motion vectors individually detected from divisional picture areas. The effect of this mitigation can be increased by weighting the detected motion vectors and by smoothing the contour between motion-compensated picture areas with the aid of filtering.
摘要翻译： 可以通过基于与原始图像信号之间的最小帧间差最大的自适应运动矢量选择固定原始图像信号或运动补偿内插图像信号来减轻由TV帧数转换引起的抖动的图像质量恶化 以及基于从分割图像区域单独检测的运动矢量的运动补偿图像信号。 通过对检测到的运动矢量进行加权并借助于滤波来平滑运动补偿图像区域之间的轮廓，可以提高这种缓解的效果。
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公开(公告)号：US4731651A
公开(公告)日：1988-03-15
申请号：US889226
申请日：1986-07-25
申请人： Kunio Matsumoto , Akira Furutani , Yutaka Tanaka , Toshiro Ohmura , Taiichiro Kurita , Yoshimichi Ohtsuka , Taiji Nishizawa , Yuichi Ninomiya
发明人： Kunio Matsumoto , Akira Furutani , Yutaka Tanaka , Toshiro Ohmura , Taiichiro Kurita , Yoshimichi Ohtsuka , Taiji Nishizawa , Yuichi Ninomiya
CPC分类号： H04N7/014
摘要： Image movement correction is provided in a field conversion television system by deriving simultaneously two fields of a selected number of lines from an original single field and vertically shifting one of the derived fields by 0.5 lines. A movement vector is determined for each field and movement correction is performed based on a current field and a preceding field, in the case of a moving object in the image. If no moving object is present linear approximation is employed to correct for motion caused by the field number conversion. Two memory systems are provided for the two simultaneous fields and also to selectively obtain specific horizontal lines of the current and preceding fields, relative to both simultaneous derived fields. Ultimate selection of a field for display is based upon the detected movement vector.
摘要翻译： 在场转换电视系统中，通过从原始单个场同时导出所选行数的两个场并将所导出的场之一垂直移位0.5行，来提供图像移动校正。 对于每个场确定运动矢量，并且在图像中的移动物体的情况下，基于当前场和前一场进行运动校正。 如果没有移动物体存在线性近似来校正由场号转换引起的运动。 为两个同时的场提供两个存储器系统，并且还相对于两个同时派生的场来选择性地获得当前和先前场的特定水平线。 用于显示的场的极限选择是基于检测到的运动矢量。
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公开(公告)号：US4307420A
公开(公告)日：1981-12-22
申请号：US155786
申请日：1980-06-02
CPC分类号： G06T7/2013 , H04N19/124 , H04N19/50 , H04N19/51 , G06T2207/10016
摘要： An interframe coding system provided for highly efficient transmission of coded television picture signal is improved by compensating prediction error of predicted picture motion in response to interframe correlation detected by shifting moving blocks in a direction opposite to a motion vector detected for predicting interframe picture motion in order to reduce an amount of coded signals to be transmitted, and further improved regarding the detection of motion vector by examining interframe correlation referred to accumulated logarithms of absolute values of interframe differential picture element signals, and still further improved regarding the compensation of predicted picture motion by changing a coding threshold level in response to picture motion and further by effecting more exact secondary prediction of picture motion. According to these improvements, an extremely high efficiency of transmission of precisely and correctly coded interframe picture signal can be attained.
摘要翻译： 提供用于编码电视图像信号的高效传输的帧间编码系统通过补偿预测的图像运动的预测误差来补偿预测图像运动的预测误差，该帧间相关检测是通过沿与检测到的运动矢量相反的方向移动运动块来检测的，以预测帧间图像运动 为了减少要发送的编码信号的数量，并且通过检查涉及帧间差分图像信号的绝对值的累积对数的帧间相关性来检测运动矢量，并进一步改进，并且关于预测图像运动的补偿进一步改进 响应于图像运动改变编码阈值水平，并进一步通过对图像运动进行更准确的二次预测。 根据这些改进，可以获得精确和正确编码的帧间图像信号的极高的传输效率。
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公开(公告)号：US5363384A
公开(公告)日：1994-11-08
申请号：US164996
申请日：1993-12-10
申请人： Toshihiro Miyoshi , Naoji Okumura , Hisashi Arita , Kenji Ishikawa , Yuichi Ninomiya , Yoshimichi Ohtsuka , Tadashi Kawashima , Takushi Iwamoto
发明人： Toshihiro Miyoshi , Naoji Okumura , Hisashi Arita , Kenji Ishikawa , Yuichi Ninomiya , Yoshimichi Ohtsuka , Tadashi Kawashima , Takushi Iwamoto
CPC分类号： H04B14/046 , H04N7/088
摘要： A digital audio signal demodulation circuit comprises a synchronous detection circuit (18) and a muting circuit (17) for muting the output from an interpolation circuit (16) using a synchronization lock signal generated from the synchronous detection circuit (18) when synchronization has been lost. The differential signal output from the interpolation circuit (16) is muted by the muting circuit (17) and thereafter integrated by an integration circuit (19). Thus, an audio signal with high sound quality can be demodulated without producing interruption noise even when synchronization has been lost or forcible muting is done.
摘要翻译： 数字音频信号解调电路包括同步检测电路（18）和静噪电路（17），用于在同步已经被同步时使用从同步检测电路（18）产生的同步锁定信号来使内插电路（16）的输出静音 丢失。 由内插电路（16）输出的差分信号由静噪电路（17）静音，然后由积分电路（19）进行积分。 因此，即使在同步失去或强制静音完成的情况下，也能够解调高音质的音频信号而不产生中断噪声。
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6.发明授权TV signal recording and reproducing apparatus employing a digital interface and including signal drop-out compensation 失效TV信号记录和再现装置采用数字接口并包括信号丢失补偿
公开(公告)号：US4943858A
公开(公告)日：1990-07-24
申请号：US314089
申请日：1989-02-23
CPC分类号： H04N9/88 , H04N7/0152
摘要： A recording and reproducing apparatus is disclosed in whic
摘要翻译： 公开了一种记录和再现装置
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公开(公告)号：US4884136A
公开(公告)日：1989-11-28
申请号：US250160
申请日：1988-09-28
IPC分类号： H04N19/50 , H04N5/14 , H04N7/015 , H04N11/04 , H04N19/00 , H04N19/423 , H04N19/59 , H04N19/80 , H04N19/85
CPC分类号： H04N7/0152 , H04N19/503 , H04N5/144
摘要： The motion detection circuit is so constructed that an interframe difference signal is passed through a horizontal direction LPF and a vertical direction LPF in cascade connection, and the interframe difference signal thus obtained is divided by the value obtained by mixing an edge signal of an image and the image level signal of the image by a mixing circuit, thus providing a motion signal.
摘要翻译： 运动检测电路被构造成使得帧间差分信号在级联连接中通过水平方向LPF和垂直方向LPF，并且将由此获得的帧间差分信号除以通过混合图像的边缘信号和 通过混合电路的图像的图像级信号，从而提供运动信号。
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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
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。
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公开(公告)号：US4757272A
公开(公告)日：1988-07-12
申请号：US880836
申请日：1986-07-01
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。
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10.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
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。
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