利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

4 条记录 (耗时 0.009 秒)

    Fuzzy multiple signature compaction scheme for built-in self-testing of large scale digital integrated circuits
    2.
    发明授权
    Fuzzy multiple signature compaction scheme for built-in self-testing of large scale digital integrated circuits 失效
    用于大规模数字集成电路内置自检的模糊多重签名压缩方案

    公开(公告)号：US5475694A

    公开(公告)日：1995-12-12

    申请号：US5357

    申请日：1993-01-19

    申请人： Andre Ivanov ,  Yuejian Wu

    发明人： Andre Ivanov ,  Yuejian Wu

    IPC分类号： G01R31/3185 ,  H04B3/46

    CPC分类号： G01R31/3185

    摘要： A method of testing a digital integrated circuit for faults. A plurality of n check points l.sub.1, l.sub.2, . . . , l.sub.n are established to define a test sequence. A set of m references r.sub.1, r.sub.2, . . . , r.sub.m are predefined, corresponding to the signatures which the circuit would produce at the corresponding check points in the absence of any faults. A test sequence is applied to the circuit and an output signature s.sub.i is derived from the circuit at the corresponding check point l.sub.i. The output signature is compared with each member of the set of references. The circuit is declared "good" if the signature matches at least one member of the set of references, or "bad" if a signature matches no members of the set of references. Testing proceeds in similar fashion at the next check point, until the circuit has been tested at all check points.

    摘要翻译： 一种测试数字集成电路故障的方法。 多个n个检查点l1,122。 的。 的。 ，ln被建立以定义测试序列。 一组m个引用r1，r2，... 的。 的。 ，rm是预定义的，对应于电路在没有任何故障的情况下在相应检查点产生的签名。 将测试序列应用于电路，并从相应检查点li处的电路得到输出特征si。 输出签名与引用集合中的每个成员进行比较。 如果签名与该组引用中的至少一个成员匹配，则该电路被声明为“良好”，如果签名与该引用集合中的任何成员相匹配，则该电路被称为“不良”。 测试在下一个检查点以类似的方式进行，直到电路在所有检查点进行测试。

    High resolution time-to-digital converter
    3.
    发明授权
    High resolution time-to-digital converter 有权
    高分辨率时间 - 数字转换器

    公开(公告)号：US06754613B2

    公开(公告)日：2004-06-22

    申请号：US10244085

    申请日：2002-09-16

    申请人： Sassan Tabatabaei ,  Andre Ivanov

    发明人： Sassan Tabatabaei ,  Andre Ivanov

    IPC分类号： H03L700

    CPC分类号： G04F10/00 ,  G04F10/06

    摘要： A time to digital converter (TDC) has a pair of digital oscillators. The periods of the oscillators differ by T&Dgr;. The oscillators are triggered by START and STOP pulses. A counter counts a number of pulses until reference points on the signals output by the oscillators coincide. Measurements may be made using a dual resolution method. Intrinsic jitter of the TDC can be determined by comparing sets of measurements in which the switch in resolutions is made at different points. A range extender circuit may be provided to extend a valid measurement range of the TDC.

    摘要翻译： 数字时钟转换器（TDC）有一对数字振荡器。 振荡器的周期因TDelta而异。 振荡器由START和STOP脉冲触发。 直到由振荡器输出的信号的参考点重合为止，计数器才会计数脉冲数。 可以使用双分辨率方法进行测量。 TDC的固有抖动可以通过比较在不同点进行分辨率中的开关的测量集来确定。 可以提供范围扩展器电路来扩展TDC的有效测量范围。

    Time monitoring appliance
    4.
    发明授权
    Time monitoring appliance 失效
    时间监控设备

    公开(公告)号：US5774425A

    公开(公告)日：1998-06-30

    申请号：US749686

    申请日：1996-11-15

    申请人： Andre Ivanov ,  Alan Arthur Lowe

    发明人： Andre Ivanov ,  Alan Arthur Lowe

    IPC分类号： G07C3/00 ,  A61C7/00 ,  G07C3/04 ,  G04B47/00 ,  G01K1/02 ,  G04F8/00

    CPC分类号： A61C7/00 ,  G07C3/04

    摘要： A low power consumption system for monitoring time of use of appliance incorporates a controller and a temperature sensor that is activated by the controller at intervals of X minutes to determine the temperature of the sensor. The sensed temperature is then compared with a threshold temperature and a counter is turned ON to accumulate time if the sensed temperature is at the desired level or turned OFF when the sensed temperature is not in the desired range. The counter remains in its ON or OFF position until the sensed temperature causes the counter to shift to the opposite position to the one it is in at that time. The counter receives oscillations from the oscillator which is continuously operating and only counts those oscillations when the counter is set in the ON position.

    摘要翻译： 用于监控设备使用时间的低功耗系统包括控制器和温度传感器，由控制器以X分钟间隔激活，以确定传感器的温度。 然后将感测到的温度与阈值温度进行比较，并且如果感测到的温度处于期望水平，则计数器被打开以累积时间，或者当感测到的温度不在期望的范围内时将其关闭。 计数器保持在其ON或OFF位置，直到感测到的温度导致计数器转移到与之相反的位置。 计数器从连续工作的振荡器接收振荡，只有当计数器设置在ON位置时才对这些振荡进行计数。