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43 条记录 (耗时 0.016 秒)

    Skew error correction circuit for video signal reproducing apparatus
    17.
    发明公开
    Skew error correction circuit for video signal reproducing apparatus 失效
    SkewfelerlerkorrekturschaltungfürVideosignalwiedergabegerät。

    公开(公告)号：EP0421486A2

    公开(公告)日：1991-04-10

    申请号：EP90121106.0

    申请日：1985-06-25

    申请人： HITACHI, LTD.

    发明人： Furuhata, Takashi ,  Owashi, Hitoaki ,  Hibi, Michio

    IPC分类号： H04N9/89 ,  H04N5/93

    CPC分类号： H04N9/896 ,  H04N5/932

    摘要： A skew error correction and a time base error compensation device for a video signal in a television receiver or the like is diclosed. An oscillator (407) produces an oscillation output signal of a constant frequency which is phase-synchronized with horizontal synchronization information included in an input video signal, and the output signal is used as a write clock. In a vertical blanking period, the oscillation output signal or a frequency-divided signal thereof is phase-compared with an output of a reference signal generator of a predetermined frequency or a frequency-divided signal thereof, and a phase error signal is negatively fed back to voltage control means which voltage-controls the oscillation frequency of the oscillator. Thus, the oscillation frequency is stabilized without using an AFC circuit and a time base error in the input video signal is eliminated.

    摘要翻译： 用于电视接收机等中的视频信号的偏斜纠错和时基误差补偿装置是相关的。 振荡器（407）产生与包括在输入视频信号中的水平同步信息相位同步的恒定频率的振荡输出信号，并且输出信号用作写入时钟。 在垂直消隐期间，将振荡输出信号或其分频信号与预定频率的参考信号发生器的输出或其分频信号进行相位比较，并将相位误差信号反馈回 对电压控制装置进行电压控制振荡器的振荡频率。 因此，在不使用AFC电路的情况下，振荡频率稳定，并且消除了输入视频信号中的时基误差。

    Video signal recording and reproducing method and apparatus
    18.
    发明公开
    Video signal recording and reproducing method and apparatus 失效
    视频信号记录和再现方法和装置

    公开(公告)号：EP0168834A3

    公开(公告)日：1988-05-18

    申请号：EP85108996

    申请日：1985-07-18

    申请人： HITACHI, LTD.

    发明人： Yoshioka, Atsushi ,  Furuhata, Takashi ,  Owashi, Hitoaki ,  Mouri, Katsuo

    IPC分类号： H04N05/92

    CPC分类号： H04N9/896 ,  H04N5/78266 ,  H04N5/92

    摘要： In a rotary magnetic head helical scan type video tape recorder using a segment recording system, a video signal of one vertical scanning period is divided into n video signal blocks (V), where n is an integer equal to or larger than 2, and a redundant period (V-BLK) having a predetermined period is inserted into the video signal blocks (V) in a recording mode. Each of the video signal blocks (V) has a number of horizontal scanning lines equal or smaller than N/n, where N is the number of the horizontal scanning lines in a field of the video signal. In a reproducing mode, a time axis error of reproduced series of the video signal blocks (V) is corrected at least during the redundant periods (V-BLK). Then, the corrected blocks are converted into the original video signal.

    Transmission method, transmission apparatus, video equipment, and display apparatus
    19.
    发明公开
    Transmission method, transmission apparatus, video equipment, and display apparatus 审中-公开
    Übertragungsverfahren，Übertragungsvorrichtung，Videoausrüstungund Anzeigevorrichtung

    公开(公告)号：EP2383929A1

    公开(公告)日：2011-11-02

    申请号：EP11175311.7

    申请日：2008-06-24

    申请人： Hitachi Ltd.

    发明人： Kurita, Toshiyuki ,  Owashi, Hitoaki

    IPC分类号： H04L5/02 ,  H04N7/18

    CPC分类号： H04L27/34 ,  H04N5/23222 ,  H04N7/17318 ,  H04N7/52 ,  H04N21/643

    摘要： The present invention provides technology for improving the convenience of information transmission and connection in the case of transmitting information by connecting together a plurality of pieces of video equipment (100, 200, 300). To that end, the present invention is one that transmits a baseband video signal and/or a compressed video signal between a first piece of video equipment (100) and a second piece of video equipment (200) by means of a bidirectional interface 10 and is characterized by the fact that the aforementioned bidirectional interface (10) has transmission rates that are asymmetric in the uplink and the downlink, narrowband information is transmitted in the downlink in case broadband information is transmitted in the uplink, and narrowband information is transmitted in the uplink in case broadband information is transmitted in the downlink.

    摘要翻译： 本发明提供了通过将多个视频设备（100,200,300）连接在一起来发送信息的情况下提高信息传输和连接的便利性的技术。 为此，本发明是通过双向接口10在第一视频设备（100）和第二视频设备（200）之间传送基带视频信号和/或压缩视频信号的本发明，以及 其特征在于，上述双向接口（10）具有在上行链路和下行链路中不对称的传输速率，在上行链路中发送宽带信息的情况下，在下行链路中发送窄带信息，并且在 在下行链路中传输宽带信息的情况下，上行链路。

    Transmission method, transmission apparatus, video equipment, and display apparatus
    20.
    发明公开
    Transmission method, transmission apparatus, video equipment, and display apparatus 审中-公开
    传输方法，发送装置，视频设备和显示设备

    公开(公告)号：EP2037618A3

    公开(公告)日：2009-04-29

    申请号：EP08252163.4

    申请日：2008-06-24

    申请人： Hitachi, Ltd.

    发明人： Kurita, Toshiyuki ,  Owashi, Hitoaki

    IPC分类号： H04L5/02 ,  H04N7/18

    CPC分类号： H04L27/34 ,  H04N5/23222 ,  H04N7/17318 ,  H04N7/52 ,  H04N21/643

    摘要： The present invention provides technology for improving the convenience of information transmission and connection in the case of transmitting information by connecting together a plurality of pieces of video equipment (100, 200, 300). To that end, the present invention is one that transmits a baseband video signal and/or a compressed video signal between a first piece of video equipment (100) and a second piece of video equipment (200) by means of a bidirectional interface 10 and is characterized by the fact that the aforementioned bidirectional interface (10) has transmission rates that are asymmetric in the uplink and the downlink, narrowband information is transmitted in the downlink in case broadband information is transmitted in the uplink, and narrowband information is transmitted in the uplink in case broadband information is transmitted in the downlink.