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    • 1. 发明授权
    • Delay circuit for a monolithic integrated circuit and method for
adjusting delay of same
    • 单片集成电路的延迟电路及其延时调整方法
    • US4894791A
    • 1990-01-16
    • US828230
    • 1986-02-10
    • Ching-Lin JiangWilliam J. Podkowa
    • Ching-Lin JiangWilliam J. Podkowa
    • H03K5/04H03K19/003
    • H03K5/04H03K19/00323
    • A delay circuit that can be implemented in a monolithic integrated circuit includes a plurality of capacitor/laser-fusible link series pairs. Delay of a binary output signal of the circuit with respect to an input transition is directly proportional to the amount of capacitance connected into the circuit. Because the laser-fusible links can selectively be opened with a laser, the amount of capacitance connected into the circuit can incrementally be reduced; thus, the delay of the circuit is reducibly adjustable to a desired value. By including a plurality of conductive element/laser-fusible link series pairs in the delay circuit, the delay of the circuit is also increasingly adjustable. A method for economically adjusting the delay of each of many like delay circuits embodied in a semiconductor wafer includes measuring a sample of the delays of the delay circuits, calculating an average delay, determining the difference between a desired delay and the average delay to determine an incremental amount of delay to eliminate or to add, determining from predetermined data which fusible links should be opened, and using a laser beam to open the appropriate links.
    • 可以在单片集成电路中实现的延迟电路包括多个电容器/激光可熔链节串联对。 相对于输入跃迁的电路的二进制输出信号的延迟与连接到电路中的电容量成正比。 因为激光熔丝可以选择性地用激光打开,连接到电路中的电容量可以逐渐减小; 因此,电路的延迟可以可调节到期望的值。 通过在延迟电路中包括多个导电元件/激光可熔链节串联对,电路的延迟也越来越可调。 用于经济地调节在半导体晶片中实现的许多类似延迟电路中的每一个的延迟的方法包括测量延迟电路的延迟的样本,计算平均延迟,确定期望延迟和平均延迟之间的差以确定 消除或添加的增量的延迟量,从预定数据确定哪个可熔断链接应该被打开,以及使用激光束打开适当的链接。
    • 7. 发明授权
    • Temperature compensated monolithic delay circuit
    • 温度补偿单片延迟电路
    • US4843265A
    • 1989-06-27
    • US217142
    • 1988-06-30
    • Ching-Lin Jiang
    • Ching-Lin Jiang
    • G05F1/46
    • G05F1/466Y10S323/907
    • A temperature and processing compensated time delay circuit of the type which can be fabricated in a monolithic integrated circuit utilizes a field effect transistor (FET) (12) connected to the terminals of a charged capacitor (14). A bias voltage connected to the gate of the FET (12) varies with temperature in a manner to compensate for the changes in current which flows from the capacitor (14) through the FET (12) due to changes in temperature. The bias voltage also varies from one integrated circuit to another in a manner to compensate for variations in FET threshold voltage caused by variations in the processing of the integrated circuits.
    • 可以在单片集成电路中制造的类型的温度和处理补偿时间延迟电路利用连接到充电电容器(14)的端子的场效应晶体管(FET)(12)。 连接到FET(12)的栅极的偏置电压随着温度而变化,以补偿由于温度变化而从电容器(14)流过FET(12)的电流的变化。 偏置电压也可以从一个集成电路到另一个集成电路的变化,以补偿由集成电路的处理变化引起的FET阈值电压的变化。
    • 8. 发明授权
    • Method and apparatus for extracting a predetermined bit pattern from a
serial bit stream
    • 用于从串行位流中提取预定位模式的方法和装置
    • US4730346A
    • 1988-03-08
    • US13911
    • 1987-02-12
    • Ching-Lin Jiang
    • Ching-Lin Jiang
    • H04J3/06H04L7/08
    • H04J3/0605
    • An embedded framing bit pattern in a serial bit stream is located by combining the last bit to arrive of the serial bit stream with a predetermined number of prior bits of the serial bit stream which are spaced apart by the pitch of the bits of the framing bit pattern, and this combination of bits is tested to determine if the combination matches part of the framing bit pattern. If a match does not occur, then the bits which were combined together are changed to a bit pattern that will not result in a match when these bits (except for the eldest bit which is disregarded) is combined again with a new bit of the serial bit stream, no matter what the logic state of the new bit. In this manner all of the bits, as they arrive and are combined and tested, will eventually be changed except the bits which are part of the framing bit pattern.
    • 通过将串行比特流的最后一位与串行比特流的预定数量的先前比特相组合来定位串行比特流中的嵌入的成帧位模式,该预定数量的串行比特流的先前比特间隔开成帧位的比特的间距 模式,并且测试这些位的组合以确定组合是否匹配成帧位模式的一部分。 如果没有发生匹配,则组合在一起的位被改变成不会导致匹配的位模式,当这些位(除了被忽略的最老位除外)被再次与串行的新位组合时 位流,无论新位的逻辑状态如何。 以这种方式,当它们到达并被组合和测试时,所有位将最终被改变,除了作为帧位模式的一部分的位之外。