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    • 22. 发明授权
    • Semiconductor integrated circuit with voltage-detecting circuit and signal transmitting and receiving system
    • 具有电压检测电路和信号发射和接收系统的半导体集成电路
    • US06944003B2
    • 2005-09-13
    • US10365527
    • 2003-02-13
    • Hirokazu SugimotoTakashi HirataHironori AkamatsuToru IwataSatoshi Takahashi
    • Hirokazu SugimotoTakashi HirataHironori AkamatsuToru IwataSatoshi Takahashi
    • G01R31/28H01L21/66H02H9/04H02H3/24
    • H02H9/046
    • A first semiconductor integrated circuit is connected to a second semiconductor integrated circuit with a cable. In the first semiconductor integrated circuit, when a power supply voltage becomes less than a set voltage detection level, a voltage-detecting circuit outputs a voltage-detected signal to lower the voltage of the cable and to stop the operation. The second semiconductor integrated circuit detects the decrease in the voltage of the cable to recognize the halt of the operation of the first semiconductor integrated circuit. In the first semiconductor integrated circuit thus configured, in testing the operation under low-voltage conditions in which the power supply voltage is less than the set voltage detection level, the voltage-detecting circuit receives a control signal from an external terminal to stop the operation forcibly. Consequently, even when the power supply voltage is made lower than the set voltage-detecting level, the first semiconductor integrated circuit properly operates until the power supply voltage reaches a predetermined lower limit of operating voltage. Thus, evaluation of operation is possible under low-voltage conditions.
    • 第一半导体集成电路通过电缆连接到第二半导体集成电路。 在第一半导体集成电路中,当电源电压变得小于设定电压检测电平时,电压检测电路输出电压检测信号来降低电缆的电压并停止工作。 第二半导体集成电路检测电缆的电压的降低以识别第一半导体集成电路的操作停止。 在这样配置的第一半导体集成电路中,在电源电压小于设定电压检测电平的低电压条件下进行测试时,电压检测电路从外部端子接收控制信号,停止动作 强制。 因此,即使电源电压低于设定电压检测电平,第一半导体集成电路也可以正常工作,直到电源电压达到预定的工作电压下限。 因此,在低电压条件下可以进行运行评估。
    • 23. 发明授权
    • Semiconductor integrated circuit and semiconductor integrated circuit system having serially interconnectable data buses
    • 具有串行可互连数据总线的半导体集成电路和半导体集成电路系统
    • US06297675B1
    • 2001-10-02
    • US09478530
    • 2000-01-06
    • Hironori AkamatsuYutaka TeradaTakashi HirataYukio ArimaSatoshi TakahashiTadahiro YoshidaYoshihide KomatsuHiroyuki Yamauchi
    • Hironori AkamatsuYutaka TeradaTakashi HirataYukio ArimaSatoshi TakahashiTadahiro YoshidaYoshihide KomatsuHiroyuki Yamauchi
    • H03B100
    • H03K19/018514Y10T307/549
    • A data line pair and a strobe line pair are provided between first and second chips to exchange data therebetween. The first chip includes an output circuit and a controller for controlling the output circuit. The second chip includes an input circuit. For example, the output circuit supplies a direct current from a power supply to one of the data lines. Then, the input circuit feeds back the received current to the output circuit through a pair of terminal resistors and the other data line. Subsequently, the output circuit supplies the fed back direct current to one of the strobe lines. In response, the input circuit feeds back the received current again to the output circuit through another pair of terminal resistors and the other strobe line. And then the fed back current is drained to the ground. Thus, compared to driving the data and strobe line pairs separately with the same amount of current supplied, the current dissipation can be halved. In this manner, the present invention is applicable to reduction of current dissipation when data should be transmitted at high speeds through multiple data bus pairs that are driven with a current supplied.
    • 在第一和第二芯片之间提供数据线对和选通线对,以在它们之间交换数据。 第一芯片包括输出电路和用于控制输出电路的控制器。 第二芯片包括输入电路。 例如,输出电路将电流从电源提供给数据线之一。 然后,输入电路通过一对端子电阻和另一条数据线将接收的电流反馈到输出电路。 随后,输出电路将反馈的直流电流提供给选通线之一。 作为响应,输入电路通过另一对端子电阻器和另一个选通线路将接收到的电流再次反馈到输出电路。 然后将反馈电流排到地面。 因此,与以相同的电流量驱动数据和选通线对相比,电流消耗可以减半。 以这种方式,本发明可应用于当通过以所提供的电流驱动的多个数据总线对以高速传输数据时,减少电流消耗。
    • 28. 发明申请
    • Semiconductor memory device
    • 半导体存储器件
    • US20070133326A1
    • 2007-06-14
    • US11634110
    • 2006-12-06
    • Satoshi IshikuraHironori AkamatsuKazuo ItohYoshinobu Yamagami
    • Satoshi IshikuraHironori AkamatsuKazuo ItohYoshinobu Yamagami
    • G11C29/00
    • G11C29/50G11C11/41G11C29/12005G11C2029/1202G11C2029/1204
    • A semiconductor memory device includes a memory cell having a circuit configuration in which a potential supplied to sources of load transistors 108 and 111 included in a latch section is different from at least one of a potential supplied to a word line 105 and a potential supplied to bit lines 106 and 107; a latch potential control circuit 101 for switching a normal operation mode and a test mode to each other in accordance with a signal applied to a test mode setting pin 102; and a read/write control circuit 103 for controlling the potential supplied to the sources of the load transistors 108 and 111 to be lower than at least one of the potential supplied to the word line 105 and the potential supplied to the bit lines 106 and 107, during an arbitrary period of at least a read operation in the test mode.
    • 半导体存储器件包括具有电路结构的存储单元,其中提供给包含在锁存部分中的负载晶体管108和111的源极的电位与提供给字线105的电位和提供给字线105的电位中的至少一个不同 位线106和107; 锁存电位控制电路101,用于根据施加到测试模式设置引脚102的信号将正常操作模式和测试模式切换到彼此; 以及用于控制提供给负载晶体管108和111的源的电位低于提供给字线105的电位和提供给位线106和107的电位中的至少一个的读/写控制电路103 在测试模式下至少读取操作的任意时段期间。
    • 29. 发明授权
    • Memory circuit and method of generating the same
    • 存储电路及其生成方法
    • US07187573B2
    • 2007-03-06
    • US11011116
    • 2004-12-15
    • Yutaka TeradaHironori Akamatsu
    • Yutaka TeradaHironori Akamatsu
    • G11C5/06
    • G11C7/1006G11C7/10G11C2207/104H01L27/10897
    • A memory circuit 10 includes: a feed-through input terminal 13 for inputting a signal different from a signal to be inputted when reading and writing memory cells; an intermediate buffer circuit 14 provided between regions where the memory cells are arranged, for relaying the signal inputted through the feed-through input terminal 13; and a feed-through output terminal 15 for outputting the signal relayed by the intermediate buffer circuit 14. Connections between the feed-through input terminal 13 and the intermediate buffer circuit 14 and between the intermediate buffer circuit 14 and the feed-through output terminal 15 are established by feed-through wires 16, 17, respectively. The feed-through wires 16, 17 are not connected to either a wire to be used when reading and wiring the memory cells, or the memory cells.
    • 存储电路10包括:馈通输入端13,用于在读取和写入存储单元时输入与要输入的信号不同的信号; 设置在存储单元布置的区域之间的中间缓冲电路14,用于中继通过馈通输入端13输入的信号; 以及用于输出由中间缓冲电路14中继的信号的馈通输出端子15。 直通输入端子13和中间缓冲电路14之间以及中间缓冲电路14与馈通输出端子15之间的连接分别由馈通线16,17建立。 当读取和布线存储单元或存储单元时,馈通线16,17不连接到要使用的导线。