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    • 9. 发明授权
    • IC testing apparatus
    • IC测试仪器
    • US5818849A
    • 1998-10-06
    • US721428
    • 1996-09-27
    • Toshio Komatsu
    • Toshio Komatsu
    • G01R31/28G01R31/319G06F11/22
    • G01R31/31917
    • An IC testing apparatus has a detecting circuit for detecting an inversion of an output state of a test output from an IC under test in response to application of a clock signal, a comparing circuit for comparing a value preset in a storage circuit with the output state of the test output and an output state of the detecting circuit. In a first comparison operation, the number of pulses of the clock signal applied to the IC under test is less than the number of pulses required to invert the output state of the test output by one pulse and the test output and detector output are compared with corresponding values preset in the storage circuit at times coincident with a test strobe signal synchronized with the clock signal. In a second comparison operation, another clock pulse is applied to the IC under test to make the total number of pulses equal to that needed for inverting the test output and the above comparisons are again made with corresponding preset values. A control circuit the determines whether the IC under test is good based on the comparison results.
    • IC测试装置具有检测电路,用于响应于施加时钟信号来检测来自被测IC的测试输出的输出状态的反转,用于将存储电路中预设的值与输出状态进行比较的比较电路 的测试输出和检测电路的输出状态。 在第一比较操作中,施加到被测IC的时钟信号的脉冲数小于将测试输出的输出状态反转一个脉冲所需的脉冲数,并将测试输出和检测器输出与 在与时钟信号同步的测试选通信号的同时,在存储电路中预设的相应值。 在第二比较操作中,另一个时钟脉冲被施加到被测试的IC,使得总数等于反相测试输出所需的脉冲数,并且上述比较再次以相应的预设值进行。 控制电路根据比较结果确定被测IC是否良好。
    • 10. 发明授权
    • Data recording method and device
    • 数据记录方法和装置
    • US5239470A
    • 1993-08-24
    • US651830
    • 1991-02-07
    • Toshio Komatsu
    • Toshio Komatsu
    • G01P1/122G07C5/085
    • Data recording device including a sampling device for sampling data to be recorded at a predetermined period, a permissible error range calculating device for calculating a permissible error range with respect to the data sampled by the sampling device at each sampling timing, and a recording device for deciding a longest straight line intersecting the permissible error range calculated by the permissible error range calculating device and recording a length of the straight line represented by a sampling number obtained by the sampling device and the data at an end point of the straight line, whereby compression processing of the data sampled is carried out, and the data compressed is recorded. The data recording device further includes a device for detecting an inflection point of the data sampled by the sampling device, wherein when the inflection point is detected by the inflection point detecting device, the compression processing is stopped.
    • 数据记录装置,包括用于采样数据的采样装置,用于以预定周期记录数据;允许误差范围计算装置,用于计算相对于在每个采样定时采样装置采样的数据的容许误差范围;以及记录装置, 确定与允许误差范围计算装置计算出的允许误差范围相交的最长直线,并记录由采样装置获得的采样数所表示的直线的长度和在直线的终点处的数据,由此压缩 对采集的数据进行处理,并记录压缩的数据。 数据记录装置还包括用于检测由采样装置采样的数据的拐点的装置,其中当拐点检测装置检测到拐点时,停止压缩处理。