会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 3. 发明申请
    • Phase lock loop jitter measurement
    • 锁相环抖动测量
    • US20060269030A1
    • 2006-11-30
    • US11138151
    • 2005-05-26
    • James EckhardtPaul MuenchGeorge Smith
    • James EckhardtPaul MuenchGeorge Smith
    • H04L7/00
    • H03L7/08
    • A jitter measurement circuit and method having an input for receiving a reference signal whose jitter is to be measured, an input for receiving a clock signal having a series of cycles, and a measurement circuit for measuring the delay between the reference signal and the clock signal on a cycle by cycle bases, giving a cycle to cycle jitter measurement. The measurement circuit includes a plurality of n stages, each stage having a delay element including an input. The second and later delay elements have their inputs connected to the output of the previous stage and the first delay element has an input for receiving the reference signal. One of n latches is connected to the input of a corresponding one of the delay elements. Each latch has a clock input for receiving the clock signal, and an output for latching the value on the latches input when the clock input is clocked by an edge of the clock signal. An analysis logic circuit is provided having a plurality of n inputs connected to the outputs of the latches. The analysis logic circuit analyzes the values on the latches to give a measure of jitter.
    • 一种抖动测量电路和方法,具有用于接收其测试抖动的参考信号的输入端,用于接收具有一系列周期的时钟信号的输入端和用于测量参考信号和时钟信号之间的延迟的测量电路 在循环周期基础上,给出周期抖动测量的周期。 测量电路包括多个n级,每级具有包括输入的延迟元件。 第二和稍后的延迟元件的输入连接到前一级的输出,第一延迟元件具有用于接收参考信号的输入。 n个锁存器中的一个连接到对应的一个延迟元件的输入端。 每个锁存器具有用于接收时钟信号的时钟输入端,以及当时钟输入由时钟信号的边沿计时时,用于锁存锁存器输入端的值的输出端。 提供分析逻辑电路,其具有连接到锁存器的输出的多个n个输入。 分析逻辑电路分析锁存器上的值以给出抖动的度量。
    • 4. 发明申请
    • Phase Lock Loop Jitter Measurement
    • 锁相环抖动测量
    • US20060269031A1
    • 2006-11-30
    • US11457161
    • 2006-07-13
    • James EckhardtPaul MuenchGeorge Smith
    • James EckhardtPaul MuenchGeorge Smith
    • H04L7/00
    • H03L7/08
    • A jitter measurement circuit and method having an input for receiving a reference signal whose jitter is to be measured, an input for receiving a clock signal having a series of cycles, and a measurement circuit for measuring the delay between the reference signal and the clock signal on a cycle by cycle bases, giving a cycle to cycle jitter measurement. The measurement circuit includes a plurality of n stages, each stage having a delay element including an input. The second and later delay elements have their inputs connected to the output of the previous stage and the first delay element has an input for receiving the reference signal. One of n latches is connected to the input of a corresponding one of the delay elements. Each latch has a clock input for receiving the clock signal, and an output for latching the value on the latches input when the clock input is clocked by an edge of the clock signal. An analysis logic circuit is provided having a plurality of n inputs connected to the outputs of the latches. The analysis logic circuit analyzes the values on the latches to give a measure of jitter.
    • 一种抖动测量电路和方法,具有用于接收其测试抖动的参考信号的输入端,用于接收具有一系列周期的时钟信号的输入端和用于测量参考信号和时钟信号之间的延迟的测量电路 在循环周期基础上,给出周期抖动测量的周期。 测量电路包括多个n级,每级具有包括输入的延迟元件。 第二和稍后的延迟元件的输入连接到前一级的输出,第一延迟元件具有用于接收参考信号的输入。 n个锁存器中的一个连接到对应的一个延迟元件的输入端。 每个锁存器具有用于接收时钟信号的时钟输入端,以及当时钟输入由时钟信号的边沿计时时,用于锁存锁存器输入端的值的输出端。 提供分析逻辑电路,其具有连接到锁存器的输出的多个n个输入。 分析逻辑电路分析锁存器上的值以给出抖动的度量。
    • 5. 发明申请
    • PLL LOOP FILTER CAPACITOR TEST CIRCUIT AND METHOD FOR ON CHIP TESTING OF ANALOG LEAKAGE OF A CIRCUIT
    • PLL环路滤波电容测试电路及电路模拟泄漏芯片测试方法
    • US20060164067A1
    • 2006-07-27
    • US11040138
    • 2005-01-21
    • James EckhardtPaul MuenchGeorge SmithAlamgir Tamboli
    • James EckhardtPaul MuenchGeorge SmithAlamgir Tamboli
    • G01R23/12
    • G01R27/02G01R31/2639G01R31/2884
    • A test circuit within an existing design to enable the test circuit to test directly within the circuit. This invention provides a way to test and measure the leakage of the PLL loop filter capacitor leakage during test with a simple digital tester using existing pins. The test PLL circuit has circuit a plurality of capacitors and responsive amplifiers circuits for measuring leakage including a first capacitor set having multiple transistors coupled in series and with a reference resistor circuit coupled to a first amplifier and a second capacitor set having multiple transistors coupled in series and said reference resistor circuit coupled to a second amplifier to measure the leaking across the respective capacitors coupled to said first and second amplifiers and to provide an output of the leakage for measurement with the output of said first and second amplifiers. The reference resistor circuit is broken into several series resistors and additional transistors and resistors are supplied with their terminals shorted out, to allow for RIT-B circuit tuning. The output of the test circuit provides the measurement of analog leakage to a digital tester for testing of chips having the circuit during manufacturing test.
    • 现有设计中的测试电路,使测试电路能够在电路内直接测试。 本发明提供了一种在使用现有引脚的简单数字测试仪中测试和测量测试期间PLL环路滤波电容器漏电泄漏的方法。 测试PLL电路具有用于测量泄漏的多个电容器和响应放大器电路,包括具有串联耦合的多个晶体管的第一电容器组和耦合到第一放大器的参考电阻器电路和具有串联耦合的多个晶体管的第二电容器组 并且所述参考电阻器电路耦合到第二放大器以测量穿过耦合到所述第一和第二放大器的相应电容器的泄漏,并且提供所述泄漏的输出与所述第一和第二放大器的输出进行测量。 参考电阻电路分为几个串联电阻,额定的晶体管和电阻的端子短路,以允许RIT-B电路调谐。 测试电路的输出提供了对数字测试仪的模拟泄漏测量,用于在制造测试期间测试具有电路的芯片。
    • 7. 发明申请
    • Circuits associated with fusible elements for establishing and detecting of the states of those elements
    • 与可熔元件相关联的电路,用于建立和检测这些元件的状态
    • US20050224586A1
    • 2005-10-13
    • US10819865
    • 2004-04-07
    • Seth ErlebacherPaul MuenchGeorge SmithGary Steinbrueck
    • Seth ErlebacherPaul MuenchGeorge SmithGary Steinbrueck
    • G06K19/06G06K19/067G11C17/18H01L23/525H01L23/544
    • H01L23/544G06K19/067G11C17/18H01L23/5256H01L2223/5444H01L2924/0002H01L2924/00
    • A state detection circuit for a fusible element includes a differential sensing circuit that compares voltage at a detection point in a path containing the fusible element with that at a reference point in a path establishing a non-zero reference voltage. The paths are similarly configured except one contains the fusible element while the other contains a device establishing the reference voltage. The two paths in any given sensing circuit are located in close proximity to each other so that even though element parameters in the paths of different sensing circuits may vary significantly, those values track each other in the given sensing circuit. As a result, the normal non-zero value of the voltage at the reference point maintains a relationship to that at the detection point that enables the differential sensing circuit to detect between a fused and an unfused element irrespective of variation in circuit element parameters. In order to prevent detection circuits and other circuits on the chip being damaged, during blowing of the fusible elements, voltage level of the sensing circuits are chosen to isolate the detection circuits from the other circuits on the semiconductor chip and the excitation levels applied to the detection circuits are raised to maintain differential voltages in the detection circuits at sufficiently low levels to prevent damage.
    • 用于可熔元件的状态检测电路包括差分感测电路,其将包含可熔元件的路径中的检测点处的电压与建立非零参考电压的路径中的参考点处的电压进行比较。 除了一个包含可熔元件,而另一个包含建立参考电压的器件之外,这些路径被类似地配置。 任何给定的感测电路中的两条路径彼此靠近,使得尽管不同感测电路的路径中的元件参数可能会显着变化,但是这些值在给定的感测电路中彼此跟踪。 结果,参考点处的电压的正常非零值保持与检测点的正常非零值,使得差分感测电路能够检测融合元件和未熔接元件之间,而与电路元件参数的变化无关。 为了防止芯片上的检测电路和其他电路被损坏,在吹制可熔元件期间,选择感测电路的电压电平以将检测电路与半导体芯片上的其他电路隔离,并且施加到 提高检测电路以将检测电路中的差分电压保持在足够低的水平以防止损坏。