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CHARACTERISTIC CORRECTION DEVICE

机译:特色修正装置

摘要

PURPOSE:To attain accurate level correction even in a signal recorder not having a time base collector by using a recovered reference pulse having a pulse width and a pulse level data being a quantized data so as to correct the level of a reproduced video signal. CONSTITUTION:The above device is provided with a reference pulse generating means 4 generating plural kinds of pulses with different level equivalent from a black level to a white level of a video signal, a pulse level data generating means 5 generating a data identifying the level of the output pulse, and reference data insert means 6, 7 inserting the reference pulse and the pulse level data into a recording video signal within a blanking period. Moreover, the device is provided with a level correction means 14 using the reference pulse and the pulse level data obtained from a reproduced video signal to correct the level of the reproduced video signal and with a signal interpolation means 10 replacing a fraction of a valid scanning number for a period into a signal pattern not causing a fraction in the case of channel division. Thus, even for a signal recorder not having a time base collector, the level is correctly corrected.
机译:目的:即使在没有时基采集器的信号记录器中,也可以通过使用恢复的参考脉冲来获得准确的电平校正,该参考脉冲具有脉冲宽度和作为量化数据的脉冲电平数据,以校正再现视频信号的电平。组成:以上设备配备有参考脉冲发生装置4,用于产生从视频信号的黑色电平到白色电平具有不同等效电平的多种脉冲,脉冲电平数据产生装置5生成识别信号电平的数据输出脉冲和参考数据插入装置6、7在消隐周期内将参考脉冲和脉冲电平数据插入记录视频信号中。此外,该设备具有电平校正装置14,该电平校正装置14使用参考脉冲和从再现的视频信号获得的脉冲电平数据来校正再现的视频信号的电平,并且信号插值装置10代替有效扫描的一部分。在信道分割的情况下,在一定时间内将信号数目变为信号模式不会引起分数变化。因此,即使对于没有时基采集器的信号记录器,也可以正确校正电平。

著录项

  • 公开/公告号JPH0442681A

    专利类型

  • 公开/公告日1992-02-13

    原文格式PDF

  • 申请/专利权人 MITSUBISHI ELECTRIC CORP;

    申请/专利号JP19900150594

  • 发明设计人 OKUMA IKUO;IDEI TOSHIO;

    申请日1990-06-08

  • 分类号H04N5/91;H04N5/92;

  • 国家 JP

  • 入库时间 2022-08-22 05:43:04

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