首页> 外国专利> Eizoshingokirokuhoshiki

Eizoshingokirokuhoshiki

机译:新乡荣志唱片星木

摘要

PURPOSE:To obtain the picture less in the crosstalk and excellent in S/N, by detecting the rotating phase error of the rotating head produced at recording and controlling the magnetic tape according to the phase error voltage obtained from this signal and the reference signal. CONSTITUTION:The phase error voltage is fed also to the phase modulator 13. On the other hand, the rotation detection signal of frequency proportional to the rotating speed of the capstan 14 via the frequency generator 16 is fed to the phase modulator 13 via the frequency divider 17. The phase modulator 13 outputs pulse with the phase error voltage from the phase comparator 4 and the rotation detection signal from the frequency divider 17 and it is fed to the phase comparator 19 as the comparison signal. The phase comparator 19 compares the reference signal from the reference signal generating circuit 20 with the comparison signal to output the phase error voltage according to the phase difference so that the revolution speed of the capstan motor 22 is made constant and the rotation phase is also controlled according to the phase error voltage. With this constitution, the picture less in the crosstalk and excellent in S/N can be obtained.
机译:目的:通过检测在记录时产生的旋转头的旋转相位误差并根据从该信号和参考信号获得的相位误差电压来控制磁带,从而获得更少的串扰和出色的S / N图像。组成:相位误差电压也被馈送到相位调制器13。另一方面,频率与旋转绞盘14的转速成比例的频率的旋转检测信号通过频率发生器16被馈送到相位调制器13。分频器17。相位调制器13输出具有来自相位比较器4的相位误差电压的脉冲和来自分频器17的旋转检测信号,并将其作为比较信号馈送到相位比较器19。相位比较器19将来自参考信号产生电路20的参考信号与比较信号进行比较,以根据相位差输出相位误差电压,从而使主导轴电动机22的转速恒定并且还控制旋转相位。根据相位误差电压。采用这种结构,可以获得串扰少,信噪比(S / N)优异的图像。

著录项

  • 公开/公告号JPH0227745B2

    专利类型

  • 公开/公告日1990-06-19

    原文格式PDF

  • 申请/专利权人 VICTOR COMPANY OF JAPAN;

    申请/专利号JP19790104751

  • 发明设计人 HIROTA AKIRA;KOSAKA YOSHITERU;

    申请日1979-08-17

  • 分类号H04N5/7826;G11B15/46;G11B15/467;H04N5/782;

  • 国家 JP

  • 入库时间 2022-08-22 06:22:23

相似文献

  • 专利
  • 中文文献
获取专利

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号