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    • 6. 发明公开
    • Circuit for detecting false read data from eprom
    • Schaltung zur Erkennung falscher Lesedaten aus PROM。
    • EP0481731A2
    • 1992-04-22
    • EP91309487.6
    • 1991-10-15
    • Nippon Motorola Ltd.
    • Usami, TadashiKosuge, Masahiro
    • G11C29/00
    • G11C29/50G11C16/04
    • First (30) and second (31) EPROM transistors are coupled in series to a power source (VDD), a third EPROM transistor (32) is connected in parallel with the series connection and a two input NAND gate (33) has a first input connected to the junction between the first (30) and second (31) EPROM transistors by an inverter (39) and a second input connected to the drain of the third transistor (32). The first (30) and third (32) transistors are programmed with the EPROM and the second transistor (31) is not. When a read signal is applied to the gates of all three transistors (30, 31, 32) a predetermined signal will be available at the output of the NAND gate (33) if the EPROM read condition is not faulty
    • 第一(30)和第二(31)EPROM晶体管串联耦合到电源(VDD),第三EPROM晶体管(32)与串联连接并联,并且两个输入NAND门(33)具有第一 通过反相器(39)连接到第一(30)和第二(31)EPROM晶体管之间的接点的输入端和连接到第三晶体管(32)的漏极的第二输入端。 第一(30)和第三(32)晶体管用EPROM编程,第二晶体管(31)不是。 当读信号被施加到所有三个晶体管(30,31,32)的栅极时,如果EPROM读取条件没有故障,则预定信号将在NAND门(33)的输出端可用。
    • 8. 发明公开
    • Voltage comparator with sample hold circuit
    • Spannungsvergleichsschaltung mit Abtast-Halte-Schaltungsanordnung。
    • EP0465249A1
    • 1992-01-08
    • EP91306079.4
    • 1991-07-04
    • Nippon Motorola Ltd.
    • Nakatani, YuuichiMiyake, Hironori
    • H03K5/24G11C27/02H03M1/36
    • H03K5/249G11C27/024H03M1/365
    • A chopper type voltage comparator (40), as used in analog-to-digital converters (70, 80), includes an inverter (43) with an input node, an output and a switch (45) coupled between the output and the input node and a capacitor (44) coupling the input node to a comparator input node (50). A signal input terminal (48) and at least one reference voltage input terminal (49) are connected to the comparator input terminal (50) by alternately operated switches (46, 47). A sample hold circuit (65, 72, 81) is connected to the comparator input node (50) to overcome the effects of the switches (45, 46, 47) on the reference voltage.
    • 如在模数转换器(70,80)中使用的斩波型电压比较器(40)包括具有输入节点的反相器(43),耦合在输出端和输入端之间的输出端和开关(45) 节点和将输入节点耦合到比较器输入节点(50)的电容器(44)。 信号输入端子(48)和至少一个参考电压输入端子(49)通过交替操作的开关(46,47)连接到比较器输入端子(50)。 采样保持电路(65,72,81)连接到比较器输入节点(50)以克服开关(45,46,47)对参考电压的影响。