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    • 1. 发明授权
    • Digital information restoring device including period detector
    • 数字信息恢复装置,包括周期检测器
    • US5623376A
    • 1997-04-22
    • US233536
    • 1994-04-26
    • Shingo IkedaShinichi Yamashita
    • Shingo IkedaShinichi Yamashita
    • G11B20/14G11B20/22G11B27/32G11B5/09G11B20/16
    • G11B20/1419G11B27/323G11B20/225
    • A digital information restoring device is arranged to detect time between level transition points of a digital signal which indicates digital information by means of variations in its period, output the resultant period data, calculate an average value of at least two period data among the output period data, and compare the average value with the aforesaid period data, and restore the digital information. The digital information restoring device is, therefore, capable of restoring the digital information at a high speed without using a high-speed PLL circuit or the like. The digital information restoring device may also be arranged to perform time-axis expansion of only part of the received period data, and input the resultant period data to a computing circuit to restore the digital information.
    • 数字信息恢复装置被配置为通过其周期的变化来检测指示数字信息的数字信号的电平转变点之间的时间,输出合成周期数据,计算输出周期中的至少两个周期数据的平均值 数据,并将平均值与上述周期数据进行比较,并恢复数字信息。 因此,数字信息恢复装置能够在不使用高速PLL电路等的情况下高速恢复数字信息。 数字信息恢复装置还可以被布置为仅执行接收的周期数据的一部分的时间轴扩展,并将合成的周期数据输入到计算电路以恢复数字信息。
    • 3. 发明授权
    • Time base correcting device
    • 时基校正装置
    • US5335077A
    • 1994-08-02
    • US906267
    • 1992-06-26
    • Shinichi YamashitaShingo IkedaMakoto Gohda
    • Shinichi YamashitaShingo IkedaMakoto Gohda
    • H04N9/896A04N9/89
    • H04N9/896
    • A time base correcting device inputs a video signal including a sync. signal and a burst signal, produces an error signal representing a phase difference between a clock signal synchronized with the sync. signal and the burst signal, writes the video signal into the memory in synchronism with the clock signal having a phase thereof adjusted in accordance with the error signal, produces an interpolation signal to interpolate a plurality of adjacent error signals along a time base and controls the readout from the memory by the error signals and the interpolation signal. In this manner, it attains time base correction, particularly velocity error correction with high accuracy.
    • 时基校正装置输入包括同步的视频信号。 信号和突发信号产生表示与同步同步的时钟信号之间的相位差的误差信号。 信号和突发信号,将视频信号与具有根据误差信号调整的相位的时钟信号同步地写入存储器,产生内插信号,以沿着时基内插多个相邻的误差信号,并且控制 通过误差信号和插值信号从存储器读出。 以这种方式,可以实现时基校正,特别是高精度的速度误差校正。