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    • 1. 发明授权
    • Circuit and method for the recorder display of high frequency periodic
signals
    • 记录仪显示高频周期信号的电路和方法
    • US4213134A
    • 1980-07-15
    • US15145
    • 1979-02-26
    • Chun-Fu Chen
    • Chun-Fu Chen
    • G01D9/16G01R13/04G01R13/34G01D9/00G01D4/10H03K5/00H03K17/00
    • G01R13/04G01D9/16G01R13/34
    • A circuit and method for the display of a high frequency periodic signal on a display (21) having a maximum response frequency less than the periodic signal frequency includes a signal period counter (12) for counting the number of periods in the high frequency periodic signal, a sampling control counter (16) for counting at a frequency substantially greater than the frequency of the high frequency periodic signal, and a comparator (17) for comparing the counts in the signal period counter (12) and the sampling control counter (16) and indicating a match thereof. When a match count is indicated, some electrical parameter of the high frequency periodic signal is sampled and held by a sample and hold circuit (20) until the next match count is indicated, thereby accurately reproducing the high frequency periodic signal at another frequency in a range of frequencies from zero up to and including the maximum response frequencies of the display.
    • 用于在具有小于周期信号频率的最大响应频率的显示器(21)上显示高频周期信号的电路和方法包括用于对高频周期信号中的周期数进行计数的信号周期计数器(12) ,用于以基本上大于高频周期信号的频率的频率进行计数的采样控制计数器(16),以及用于比较信号周期计数器(12)和采样控制计数器(16)中的计数的比较器 )并指示其匹配。 当指示匹配计数时,高频周期信号的一些电参数被取样和保持电路(20)采样和保持,直到指示下一个匹配计数,从而在另一个频率上精确地再现高频周期信号 频率范围从零到包括显示器的最大响应频率。
    • 2. 发明授权
    • Apparatus for producing continuous graphic displays from intermittantly
sampled data
    • 用于从间歇采样数据生成连续图形显示的装置
    • US3968499A
    • 1976-07-06
    • US550984
    • 1975-02-19
    • Peter R. LoweTommy N. Tyler
    • Peter R. LoweTommy N. Tyler
    • G01R13/14G01D1/12G01D9/16G01R13/20G01R17/04G01D9/42
    • G01D1/12G01D9/16G01R17/04
    • The minimum and maximum values attained by an analog data signal in each of successive sampling periods are determined by alternately operative amplitude detectors which produce and store a corresponding minimum and maximum signal for each of these periods. A generator produces a ramp signal which repeats in each period in synchronism with the sweep of the beam of a fiber optics strip cathode ray tube along the strip thereof. A record sheet is advanced at right angles to this strip. Comparators are operative in each period to compare the stored detector signals of the immediately preceding period with the ramp signal, and to produce an output when the ramp signal exceeds either of the detector signals. An EXCLUSIVE OR gate receives these outputs and unblanks the normally blanked tube beam for a time in each period to produce a line on the sheet extending along the strip between points representing the minimum and maximum signal values for the preceding period. The successive lines of the successive periods combine to form a recorded curve for the data signal.
    • 在每个连续的采样周期中由模拟数据信号获得的最小值和最大值由交替操作的振幅检测器确定,该检测器产生并存储这些周期中的每一个的对应的最小和最大信号。 发生器产生斜坡信号,其在每个周期中与沿着条带的光纤条带阴极射线管的扫描同步地重复。 记录表与该条直角前进。 比较器在每个周期中进行操作,以将紧接在前的周期的存储的检测器信号与斜坡信号进行比较,并且当斜坡信号超过检测器信号中的任一个时产生输出。 独占或门接收这些输出,并且在每个周期内接收通常消隐的管束一段时间,以便在表示前一周期的最小和最大信号值的点之间沿着带延伸的片材上产生一条线。 连续周期的连续行组合形成数据信号的记录曲线。