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46 条记录 (耗时 0.012 秒)

    Methods of and apparatus for coding television signals having varying frame rates
    42.
    发明授权
    Methods of and apparatus for coding television signals having varying frame rates 失效
    用于编码具有不同帧速率的电视信号的方法和装置

    公开(公告)号：US5359464A

    公开(公告)日：1994-10-25

    申请号：US51576

    申请日：1993-04-22

    申请人： James H. Wilkinson

    发明人： James H. Wilkinson

    IPC分类号： H04N5/91 ,  H04N5/926 ,  H04N7/01 ,  H04N7/26 ,  H04N9/79 ,  H04N11/04 ,  H04N11/20 ,  H04N5/78

    CPC分类号： H04N9/7925 ,  H04N5/9268 ,  H04N7/011

    摘要： Apparatus for coding a television signal in common image format in which the video frame rate may have any one of a plurality of predetermined different values and the number of pixels or the spatial resolution per video frame of which is the same for all frame rates, comprises a video encoder for coding the video information of each video frame into a format suitable for recording in oblique tracks on a magnetic tape, and an audio encoder for coding the audio information associated with each video frame into blocks for recording with the video information, each audio block comprising digital audio data and a pointer indicating that portion of the block containing the audio data, and preferably also the sample rate of the audio data.

    摘要翻译： 用于以公共图像格式编码电视信号的装置，其中视频帧速率可以具有多个预定的不同值中的任何一个，并且每个视频帧的像素数量或每个视频帧的空间分辨率对于所有帧速率是相同的，包括 用于将每个视频帧的视频信息编码成适用于在磁带上的倾斜轨道中记录的格式的视频编码器，以及用于将与每个视频帧相关联的音频信息编码为用于与视频信息一起记录的块的音频编码器， 音频块包括数字音频数据和指示包含音频数据的块的部分的指针，并且还优选地还包括音频数据的采样率。

    Apparatus for reproducing a video signal of one system with conversion to a video signal of another system
    44.
    发明授权
    Apparatus for reproducing a video signal of one system with conversion to a video signal of another system 失效
    用于通过转换为另一系统的视频信号来再现一个系统的视频信号的装置

    公开(公告)号：US4346397A

    公开(公告)日：1982-08-24

    申请号：US005688

    申请日：1979-01-23

    申请人： Yoshihiko Ota

    发明人： Yoshihiko Ota

    IPC分类号： H04N7/01 ,  H04N9/79 ,  H04N5/78

    CPC分类号： H04N9/7925 ,  H04N7/011

    摘要： A reproducing apparatus reproduces a video signal of a certain system having a field frequency F1 and a number N1 of horizontal scanning lines within one field period which has been recorded on a magnetic tape travelling at a speed S1 along plurality tracks formed obliquely relative to the longitudinal direction of the tape and mutually parallel, converting the video signal to a video signal of another system having a field frequency F2 and a number N2 of horizontal scanning lines. The reproducing apparatus comprises a means for causing the tape to travel at a speed S2 which is represented by the equation S2=(F2/F1)S1, and a means for causing the rotary heads to trace each track on the travelling magnetic tape thereby utilizing a signal over tracing range of a length l2 substantially as a reproduced signal corresponding to unit field amount, the length l2 being represented by the equation l2=(N2/N1)l1, wherein l1 is the length of the recording track corresponding to unit field amount of the recorded signal on the magnetic tape.

    摘要翻译： 再现装置再现具有在一个场周期内具有场频F1和水平扫描线数N1的某一系统的视频信号，其已被记录在沿着相对于纵向方向倾斜地形成的多个轨道的以速度S1行进的磁带上 方向相互平行，将视频信号转换为具有场频F2和水平扫描线数N2的另一系统的视频信号。 再现装置包括用于以由等式S2 =（F2 / F1）S1表示的速度S2使带移动的装置，以及用于使旋转头跟踪行进磁带上的每个轨道的装置，从而利用 基本上作为对应于单位场量的再现信号的长度l2的跟踪范围的信号，长度l2由等式l2 =（N2 / N1）11表示，其中l1是对应于单位场的记录轨道的长度 磁带上记录信号的数量。

    Scan conversion apparatus
    45.
    发明授权
    Scan conversion apparatus 失效
    扫描转换装置

    公开(公告)号：US3925606A

    公开(公告)日：1975-12-09

    申请号：US47812774

    申请日：1974-06-10

    申请人： WESTINGHOUSE ELECTRIC CORP

    发明人： WOOD KENNETH E ,  PARRISH WILLIAM F ,  KENNEDY PAUL G

    IPC分类号： H04N5/781 ,  G01S7/62 ,  G01S15/89 ,  G11B5/00 ,  H04N7/01 ,  H04N7/12 ,  H04N7/18

    CPC分类号： H04N7/122 ,  G01S15/8902 ,  H04N7/011

    摘要： Periodic signals, for example sonar returns, to be displayed on a conventional television monitor are sampled and put into storage registers at a first rate. The storage registers are emptied at a second rate and the information is placed onto a video magnetic disk. For each sonar transmission a number of samples of the return signal are placed into, and read out of, the storage registers, during each revolution of the disk, as the return is coming in, to build up a television display signal indicative of the sonar return.

    摘要翻译： 将在常规电视监视器上显示的定期信号，例如声纳返回被采样并以第一速率放入存储寄存器中。 存储寄存器以第二速率清空，信息被放置在视频磁盘上。 对于每个声纳传输，当返回进入时，在盘的每次旋转期间，将返回信号的多个样本放置到存储寄存器中并从存储寄存器读出，以建立指示声纳的电视显示信号 返回。