Video signal recording apparatus and method, video signal reproduction apparatus and method, video signal recording and reproduction apparatus and method, and recording medium
    96.
    发明授权
    Video signal recording apparatus and method, video signal reproduction apparatus and method, video signal recording and reproduction apparatus and method, and recording medium 失效
    视频信号记录装置和方法,视频信号再现装置和方法,视频信号记录和再现装置和方法以及记录介质

    公开(公告)号:US06496647B2

    公开(公告)日:2002-12-17

    申请号:US09079591

    申请日:1998-05-15

    IPC分类号: H04N592

    摘要: A video signal recording and reproduction apparatus comprising a video signal recording block and a video signal reproduction block. The video signal recording block includes a sub information/feature amount detector for detecting sub information and/or a feature amount from a video signal, an identification signal generator for generating identification signals corresponding to respective frames of the video signal in accordance with the sub information and/or feature amount, and a recorder for recording the identification signals together with the video signal in sectors of a program area on a recording medium. The identification signals are recorded in a sub code area in each sector of the program area containing the corresponding frames of the video signal. The video signal reproduction block includes an identification signal detector for detecting the identification signals from the sub code areas and reproduction means for generating a screen comprised of respective frames of the video signal recorded in the sector of the program area corresponding to the detected identification signals.

    摘要翻译: 一种视频信号记录和再现装置,包括视频信号记录块和视频信号再现块。 视频信号记录块包括用于从视频信号检测子信息和/或特征量的子信息/特征量检测器,用于根据子信息产生对应于视频信号的各个帧的识别信号的识别信号发生器 和/或特征量,以及记录器,用于将记录信号与视频信号一起记录在记录介质上的程序区域的扇区中。 识别信号被记录在包含视频信号的相应帧的节目区域的每个扇区中的子码区域中。 视频信号再现块包括用于检测来自子代码区域的识别信号的识别信号检测器和用于产生由对应于检测到的识别信号的程序区域的扇区中记录的视频信号的各个帧组成的屏幕的再现装置。

    Magnetic recording and reproducing apparatus for controlling the tension
of a magnetic tape
    100.
    发明授权
    Magnetic recording and reproducing apparatus for controlling the tension of a magnetic tape 失效
    用于控制磁带张力的磁记录和重放装置

    公开(公告)号:US5947402A

    公开(公告)日:1999-09-07

    申请号:US899203

    申请日:1997-07-23

    摘要: A magnetic recording and reproducing apparatus for recording a desired sound or picture signal to a magnetic tape by a magnetic head. At the time of normal-speed recording and reproduction, the magnetic tape is taken up at a constant speed, but by changing the tape travelling speed of the tape on the rotary drum, DTF control and high-speed noiseless reproduction are enabled. The tension of the tape on the entrance side of the rotary drum is controlled to a desired value. This apparatus includes a tape tension actuator and a tape drawing actuator on the entrance side and on the exit side, respectively, of the rotary drum. In DTF control, both tape actuators correct a tracking error of the tape in cooperation with each other. In high-speed noiseless reproduction, both tape actuators are differentially driven so as to lower the tape travelling speed on the rotary drum. Both tape actuators are driven in feedback control using the modern control.

    摘要翻译: 一种用于通过磁头将期望的声音或图像信号记录到磁带的磁记录和重放装置。 在正常速度记录和再现时,磁带以恒定速度被采集,但是通过改变旋转磁鼓上的磁带的磁带行进速度,可以进行DTF控制和高速无噪声再现。 将旋转鼓入口侧的胶带的张力控制在期望值。 该装置包括分别在旋转鼓的入口侧和出口侧的带张力致动器和带拉动致动器。 在DTF控制中,两个磁带执行器彼此协调地校正磁带的跟踪误差。 在高速无声再现中,两个磁带致动器被差动驱动,以便降低旋转磁鼓上的磁带行进速度。 两个磁带执行机构均采用现代控制器进行反馈控制。