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    • 9. 发明授权
    • Semiconductor integrated circuit device
    • 半导体集成电路器件
    • US4617648A
    • 1986-10-14
    • US669348
    • 1984-11-08
    • Shigeo KubokiHideo MaejimaIkuro Masuda
    • Shigeo KubokiHideo MaejimaIkuro Masuda
    • G01R31/26G01R31/28G01R31/3185G06F11/267H01L21/66H01L21/822H01L27/04G11C13/00
    • G06F11/2236G01R31/318541
    • A semiconductor integrated circuit device provided with a flip-flop circuit including gates which are connected to each other so as to form a closed loop, is disclosed. The device includes: first means for generating a first write timing signal, a second write timing signal, a diagnosis control signal and diagnostic data which are all concerned with the flip-flop circuit, when the device is diagnosed to detect a fault therein; second means connected to the output side of the flip-flop circuit for making and breaking the closed loop of the gates in accordance with the first write timing signal; third means connected to the output side of the flip-flop circuit for supplying the diagnostic data to the flip-flop circuit in accordance with the second write timing signal; and fourth means connected to the input side of the flip-flop circuit for blocking a signal applied to the input side of the flip-flop circuit, in accordance with the diagnosis control signal.
    • 公开了一种半导体集成电路装置,其具备包括彼此连接形成闭环的栅极的触发电路。 所述装置包括:当所述装置被诊断为检测到其中的故障时,所述装置包括:产生第一写定时信号,第二写定时信号,诊断控制信号和全部与触发器电路有关的诊断数据的装置; 连接到所述触发器电路的输出侧的第二装置,用于根据所述第一写入定时信号使所述门的闭合环路断开; 连接到所述触发器电路的输出侧的第三装置,用于根据所述第二写定时信号将所述诊断数据提供给所述触发器电路; 以及连接到触发器电路的输入侧的第四装置,用于根据诊断控制信号阻断施加到触发器电路的输入侧的信号。
    • 10. 发明授权
    • Integrated circuit device
    • 集成电路器件
    • US4701922A
    • 1987-10-20
    • US769311
    • 1985-08-26
    • Shigeo KubokiIkuro MasudaToshiaki MasudaTerumine Hayashi
    • Shigeo KubokiIkuro MasudaToshiaki MasudaTerumine Hayashi
    • G01R31/28G01R31/3185G06F11/22H01L27/00
    • G01R31/318558
    • An integrated circuit device comprises combinational circuits and sequential circuits. Each of the sequential circuits is provided with a (common) input control signal terminal for controlling the entry of main input terminal signals into the sequential circuit, a test data input/output terminal, a read/write signal terminal for controlling the transfer of the test data, and a latch circuit. The integrated circuit device is partitioned into sequential circuit groups, and combinational circuit groups used as partitioning test units, the main input/output terminal groups of which are connected with the sequential circuit groups through wiring layers. Test data are written into and read out from the sequential circuit groups under control of read/write signal lines through bus lines dedicated to testing. Thus, a higher fault-coverage ratio can be easily obtained with a smaller number of steps and a small test circuit area.
    • 集成电路装置包括组合电路和顺序电路。 每个顺序电路设置有(公共)输入控制信号端子,用于控制主输入端信号进入顺序电路,测试数据输入/输出端,读/写信号端,用于控制 测试数据和锁存电路。 集成电路器件分为顺序电路组和组合电路组,用作分配测试单元,其主要输入/输出端子组通过布线层与顺序电路组相连。 在通过专用于测试的总线进行读/写信号线的控制下,将测试数据写入和读出顺序电路组。 因此,以更小的步数和小的测试电路面积可以容易地获得更高的故障覆盖率。