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    • 5. 发明授权
    • Clocking methodology for at-speed testing of scan circuits with synchronous clocks
    • 具有同步时钟的扫描电路的高速测试时钟方法
    • US07424656B2
    • 2008-09-09
    • US11060407
    • 2005-02-18
    • Benoit Nadeau-DostieJean-François CôtéFadi Maamari
    • Benoit Nadeau-DostieJean-François CôtéFadi Maamari
    • G01R31/28
    • G01R31/31858
    • A clocking method for at-speed scan testing for delay defects in cross-domain paths of interacting synchronous clock domains in a scan circuit, each path originating from a source memory element in one of the domains and terminating at a destination memory element in another of the domains and comprises selectively aligning either a capture edge or a launch edge of the clock of each domain with a corresponding edge of at least one other domain of the interacting synchronous clock domains to determine the cross-domain paths to be tested between a source domain and a destination domain; clocking memory elements in each domain at respective domain clock rates to launch signal transitions from source memory elements in source domains; and for each pair of interacting clock domains under test, capturing, in the destination domain, circuit responses to signal transitions launched along paths originating from the source domain and selectively disabling capturing, in the source domain, of circuit responses to signal transitions launched along paths originating from the destination domain.
    • 一种用于对扫描电路中相互作用的同步时钟域的跨域路径中的延迟缺陷进行高速扫描测试的时钟方法,每个路径源自一个域中的源存储器元件,并终止于另一个的另一个中的目的地存储器元件 所述域并且包括选择性地将每个域的时钟的捕获边缘或启动边缘与交互的同步时钟域的至少一个其他域的相应边缘对准,以确定要在源域之间测试的跨域路径 和目的域; 以各个域时钟速率在每个域中计时存储器元件以从源域中的源存储器元件启动信号转换; 并且对于正在测试的每对相互作用的时钟域,在目的地域中捕获对源自源域的路径发射的信号转换的电路响应,并且选择性地禁止在源域中捕获沿着路径发射的信号转换的电路响应 源自目的地域。
    • 6. 发明授权
    • Method and circuit for collecting memory failure information
    • 收集内存故障信息的方法和电路
    • US07370251B2
    • 2008-05-06
    • US10690594
    • 2003-10-23
    • Benoit Nadeau-DostieJean-François Côté
    • Benoit Nadeau-DostieJean-François Côté
    • G11C29/00
    • G11C29/40
    • A method and circuit for collecting memory failure information on-chip and unloading the information in real time while performing a test of memory embedded in a circuit comprises, for each column or row of a memory under test, testing each memory location of the column or row according to a memory test algorithm under control of a first clock, selectively generating a failure summary on-circuit while testing each column or row of the memory; and transferring the failure summary from the circuit under control of a second clock within the time required to test the next column or row, if any, of the memory under test.
    • 一种用于在执行嵌入在电路中的存储器的测试的同时实时地收集片上存储器故障信息并实时卸载信息的方法和电路包括:对于被测存储器的每一列或一行,测试该列的每个存储器位置或 根据在第一时钟的控制下的存储器测试算法,在测试存储器的每个列或行的同时选择性地生成电路故障摘要; 以及在测试所测试的存储器的下一个列或行(如果有的话)所需的时间内从第二时钟的控制下传送来自电路的故障摘要。
    • 7. 发明授权
    • Clock controller for at-speed testing of scan circuits
    • 时钟控制器,用于扫描电路的高速测试
    • US07155651B2
    • 2006-12-26
    • US11013319
    • 2004-12-17
    • Benoit Nadeau-DostieJean-François Côté
    • Benoit Nadeau-DostieJean-François Côté
    • G01R31/28
    • G01R31/31858G01R31/318552G01R31/31922
    • A test clock controller for generating a test clock signal for scan chains in integrated circuits having one or more clock domains, comprises a shift clock controller for generating a shift clock signal for use in loading test patterns into scan chains in the clock domains and for unloading a test response patterns from the scan chains and for generating a burst phase signal after loading a test pattern; and a burst clock controller associated with each of one or more clock domains and responsive to a burst phase signal for generating a burst of clock pulses derived from a respective reference clocks and including a first group of burst clock pulses having a selected reduced frequency relative to the reference clock and a second group of burst clock pulses having a frequency corresponding to that of the reference clock.
    • 一种测试时钟控制器,用于在具有一个或多个时钟域的集成电路中产生用于扫描链的测试时钟信号,包括移位时钟控制器,用于产生用于将测试模式加载到时钟域中的扫描链中并用于卸载的移位时钟信号 来自扫描链的测试响应模式并且用于在加载测试模式之后产生突发相位信号; 以及突发时钟控制器,其与一个或多个时钟域中的每一个相关联,并且响应于脉冲串相位信号,用于产生从各个参考时钟导出的时钟脉冲串,并且包括相对于相对参考时钟具有选定的降低的频率的第一组脉冲串时钟脉冲 参考时钟和具有与参考时钟的频率对应的频率的第二组突发时钟脉冲。