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    Video signal processing circuit of motion adaptive type
    2.
    发明公开
    Video signal processing circuit of motion adaptive type 失效
    视频信号处理电路自适应型

    公开(公告)号：EP0241854A3

    公开(公告)日：1989-11-23

    申请号：EP87105218.9

    申请日：1987-04-08

    申请人： HITACHI, LTD. ,  Hitachi Video & Information System, Inc.

    发明人： Katsumata, Kenji ,  Sugiyama, Masato ,  Okuda, Akihide ,  Hirahata, Shigeru ,  Nakagawa, Isao ,  Suzuki, Sunao

    IPC分类号： H04N9/64 ,  H04N5/14 ,  H04N5/44 ,  H04N9/78

    CPC分类号： H04N5/144 ,  H04N7/012 ,  H04N9/78

    摘要： A video signal processing circuit of motion adaptive type includes a circuit for identifying motion of a picture in a video signal on the basis of a difference signal between at least a line signal appearing in an M-th field and a corresponding line signal appearing in an (M-1)th field so that, when a scanning line produced on the basis of the video signal is interpolated between scanning lines of the video signal to improve the picture quality, a signal for interpolating said scanning line is produced in a different manner depending on whether a portion of the video signal to the displayed is a still picture or a moving picture. The motion identifying circuit comprises a horizontal filter (15, 16) spreading the difference signal in the horizontal direction, a circuit (17,18) delaying the output signal of the horizontal filter by one field after attenuation, a line memory (19) delaying the output signal of the attenuating and delaying circuit (17, 18) by one line, and an output circuit (20) generating a signal identifying the motion of the picture on the basis of the output signals of the horizontal filter (15), attenuating and delaying circuit (17,18) and line memory (19).

    Video signal processing circuit of motion adaptive type
    3.
    发明公开
    Video signal processing circuit of motion adaptive type 失效
    Schaltung zur Verarbeitung eines Videosignals mit Bewegungsadaptation。

    公开(公告)号：EP0241854A2

    公开(公告)日：1987-10-21

    申请号：EP87105218.9

    申请日：1987-04-08

    申请人： HITACHI, LTD. ,  Hitachi Video & Information System, Inc.

    发明人： Katsumata, Kenji ,  Sugiyama, Masato ,  Okuda, Akihide ,  Hirahata, Shigeru ,  Nakagawa, Isao ,  Suzuki, Sunao

    IPC分类号： H04N9/64 ,  H04N5/14 ,  H04N5/44 ,  H04N9/78

    CPC分类号： H04N5/144 ,  H04N7/012 ,  H04N9/78

    摘要： A video signal processing circuit of motion adaptive type includes a circuit for identifying motion of a picture in a video signal on the basis of a difference signal between at least a line signal appearing in an M-th field and a corresponding line signal appearing in an (M-1)th field so that, when a scanning line produced on the basis of the video signal is interpolated between scanning lines of the video signal to improve the picture quality, a signal for interpolating said scanning line is produced in a different manner depending on whether a portion of the video signal to the displayed is a still picture or a moving picture. The motion identifying circuit comprises a horizontal filter (15, 16) spreading the difference signal in the horizontal direction, a circuit (17,18) delaying the output signal of the horizontal filter by one field after attenuation, a line memory (19) delaying the output signal of the attenuating and delaying circuit (17, 18) by one line, and an output circuit (20) generating a signal identifying the motion of the picture on the basis of the output signals of the horizontal filter (15), attenuating and delaying circuit (17,18) and line memory (19).

    摘要翻译： 运动自适应类型的视频信号处理电路包括用于基于出现在第M场中的至少一条线信号和出现在第M场中的相应线信号之间的差信号识别视频信号中的图像的运动的电路 （M-1）场，使得当基于视频信号产生的扫描线被内插在视频信号的扫描线之间以提高图像质量时，以不同的方式产生用于内插所述扫描线的信号 取决于所显示的视频信号的一部分是静止图像还是运动图像。 运动识别电路包括水平滤波器（15,16），用于在水平方向上扩展差分信号，在衰减后将水平滤波器的输出信号延迟一个场的电路（17,18），将存储器（19）延迟 衰减和延迟电路（17,18）的输出信号一行;以及输出电路（20），其基于水平滤波器（15）的输出信号产生识别图像的运动的信号，衰减和 延迟电路（17,18）和行存储器（19）。

    Wide-screen television receiver with aspect ratio conversion function and method of displaying a magnified range
    5.
    发明公开
    Wide-screen television receiver with aspect ratio conversion function and method of displaying a magnified range 失效
    宽屏幕电视接收机的宽高比转换功能和用于显示放大部分方法。

    公开(公告)号：EP0514819A2

    公开(公告)日：1992-11-25

    申请号：EP92108375.4

    申请日：1992-05-18

    申请人： HITACHI, LTD. ,  Hitachi Video & Information System, Inc.

    发明人： Takata, Haruki ,  Katsumata, Kenji ,  Hirahata, Shigeru ,  Konno, Mituo ,  Ishibashi, Kouichi ,  Suzuki, Sunao

    IPC分类号： H04N5/44

    CPC分类号： G06T3/4007 ,  H04N7/0122

    摘要： A wide-screen television receiver capable of converting a TV signal of a non-aspect ratio into a signal of a wide aspect ratio which can be displayed on a wide screen of the wide aspect ratio and previously visually informing the user of what part of the image of the non-aspect ratio TV signal is converted in its aspect ratio and displayed on the wide screen. The receiver includes the interpolation scan speed conversion circuit (102), the mode setting circuit (104), the aspect ratio converting circuit (103), the wide cursor adding circuit 105 and the wide display (106). The interpolation scan speed conversion circuit (102) makes a series of processes such as Y/C separation and scan line interpolation for the input video signal supplied via the input terminal (101). The aspect ratio converting circuit (103) compresses the video signal from the interpolation scan speed conversion circuit (102) in the horizontal direction by use of a memory. The magnification processing circuit (109) is provided after the aspect ratio converting circuit (103). This magnification processing circuit (109) magnifies the horizontally compressed video signal so that an arbitrary part of image specified by the mode setting circuit (104) can be magnified at given magnification powers in the horizontal and vertical directions. The wide screen display (106) displays the magnified image of the video signal without horizontal and vertical distortions on the wide screen.

    摘要翻译： 宽屏幕电视接收机能够在非宽高比的电视信号转换成宽的宽高比的一个信号，它可以在宽的宽高比的宽屏幕画面上显示与先前在视觉告知的哪一部分的所述用户的 非宽高比电视信号的图像被转换在其纵横比和显示在宽屏幕上。 该接收机包括内插扫描速度变换电路（102），所述模式设置电路（104），纵横比变换电路（103），宽光标加法电路105和宽显示（106）。 内插扫描速度变换电路（102），使一系列的处理：诸如Y / C分离和扫描线内插用于经由所述输入端（101）提供的输入视频信号。 纵横比变换电路（103），压缩从在通过使用存储器的水平方向的内插的扫描速度变换电路（102）的视频信号。 放大处理电路（109）的纵横比变换电路（103）之后提供。 这种放大处理电路（109）放大了水平方向压缩的视频信号也一样，在可以在水平和垂直方向上给定的放大率功率被放大由模式设置电路（104）中指定的图像的任意部分。 宽屏幕显示器（106）显示的视频信号的放大的图像，而不在宽屏幕上水平和垂直失真。

    Wide-screen television receiver with aspect ratio conversion function and method of displaying a magnified range
    6.
    发明公开
    Wide-screen television receiver with aspect ratio conversion function and method of displaying a magnified range 失效
    具有纵横比变换功能的宽屏幕电视接收机和显示范围的方法

    公开(公告)号：EP0514819A3

    公开(公告)日：1993-03-03

    申请号：EP92108375.4

    申请日：1992-05-18

    申请人： HITACHI, LTD. ,  Hitachi Video & Information System, Inc.

    发明人： Takata, Haruki ,  Katsumata, Kenji ,  Hirahata, Shigeru ,  Konno, Mituo ,  Ishibashi, Kouichi ,  Suzuki, Sunao

    IPC分类号： H04N5/44

    CPC分类号： G06T3/4007 ,  H04N7/0122

    摘要： A wide-screen television receiver capable of converting a TV signal of a non-aspect ratio into a signal of a wide aspect ratio which can be displayed on a wide screen of the wide aspect ratio and previously visually informing the user of what part of the image of the non-aspect ratio TV signal is converted in its aspect ratio and displayed on the wide screen. The receiver includes the interpolation scan speed conversion circuit (102), the mode setting circuit (104), the aspect ratio converting circuit (103), the wide cursor adding circuit 105 and the wide display (106). The interpolation scan speed conversion circuit (102) makes a series of processes such as Y/C separation and scan line interpolation for the input video signal supplied via the input terminal (101). The aspect ratio converting circuit (103) compresses the video signal from the interpolation scan speed conversion circuit (102) in the horizontal direction by use of a memory. The magnification processing circuit (109) is provided after the aspect ratio converting circuit (103). This magnification processing circuit (109) magnifies the horizontally compressed video signal so that an arbitrary part of image specified by the mode setting circuit (104) can be magnified at given magnification powers in the horizontal and vertical directions. The wide screen display (106) displays the magnified image of the video signal without horizontal and vertical distortions on the wide screen.

    Digital broadcast transmitting and receiving system and transmitting and receiving apparatus thereof
    9.
    发明公开
    Digital broadcast transmitting and receiving system and transmitting and receiving apparatus thereof 失效
    数码相机Rundfunkempfangs- und -sendesystem sowie Sender undEmpfängerdazu

    公开(公告)号：EP0762765A2

    公开(公告)日：1997-03-12

    申请号：EP96306376.3

    申请日：1996-09-03

    申请人： HITACHI, LTD.

    发明人： Bando, Yumi ,  Murata, Toshinori ,  Okamura, Takumi ,  Katsumata, Kenji ,  Nanki, Masaru ,  Eda, Takanori ,  Imuro, Satoshi ,  Takashimizu, Satoru

    IPC分类号： H04N7/167

    CPC分类号： H04N7/1675 ,  H04N5/913 ,  H04N21/2347 ,  H04N21/2541 ,  H04N21/26606 ,  H04N21/4405 ,  H04N2005/91328 ,  H04N2005/91364

    摘要： An arrangement to automatically change between a scrambled digital data output and descrambled digital data output of a receiver by inserting a control signal conforming to a program provider's policy into a transmission signal. In a receiving side, a descrambler descrambles a channel-decoded signal, a demultiplexer demultiplexes the multiplexed signal from the descrambler into encoded video and audio data for output to a source decoder, and extracts the control information inserted in the transmitting side for output to a switch or CPU. The CPU decrypts a control signal from the control information extracted by the demultiplexer to determine whether the scrambled digital signal or descrambled digital signal is appropriate for output, and outputs a changeover control signal depending on the result of decryption. A switch selects the output of a scrambled digital signal from a stage prior to the descrambler, or a descrambled digital signal from a stage subsequent to the descrambler, depending on the changeover control signal from the CPU. Thereby, a scrambled digital signal output or descrambled digital signal output can automatically be changed over depending on a program provider's policy.

    摘要翻译： 通过将符合程序提供商策略的控制信号插入到发送信号中，在加扰的数字数据输出和接收机的解扰数字数据输出之间自动地改变。 在接收侧，解扰器对信道解码信号进行解扰，解复用器将来自解扰器的复用信号解复用为编码视频和音频数据，以输出到源解码器，并提取插入发送侧的控制信息，以输出到 开关或CPU。 CPU从由解复用器提取的控制信息中解密控制信号，以确定加密数字信号或解扰数字信号是否适于输出，并根据解密结果输出切换控制信号。 切换器根据来自CPU的切换控制信号，选择来自解扰器之前的级的加扰数字信号的输出或来自解扰器之后的级的解扰数字信号。 因此，根据程序提供者的策略，加扰数字信号输出或解扰数字信号输出可以自动地改变。