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    • 74. 发明专利
    • Converting circuit signal
    • 转换电路信号
    • JPS5955621A
    • 1984-03-30
    • JP16491282
    • 1982-09-24
    • Hitachi LtdHitachi Micro Comput Eng Ltd
    • OGAWA KAZUYOSHITSUKADA TOSHIROUTAKAGI KATSUAKIKIDA YUUZOUHAGIWARA YOSHIMUNE
    • H03K7/08H03K5/24
    • H03K5/24
    • PURPOSE:To make uniform offset voltage caused by a temperature change by the 1st and 2nd voltage comparators by constituting both voltage comparators by the same monolithic ICs and arranging these comparators close to each other. CONSTITUTION:The voltage comparators OP4, OP5 receive a positive analog signal e1 and a negative analog signal -e1 by regarding a triangular signal No formed by a triangular wave oscillating circuit OSC as a reference signal. The output signals N3, N4 of the voltage comparators OP4, OP5 are transmitted to the inputs of an AND gate G respectively. A signal OUT having pulse width proportional to the voltage values of e1, -e1 is outputted from the AND gate G. In order to generate offset voltages similarly, the voltage comparators OP4, OP5 are formed on the same semiconductor chip.
    • 目的:通过由同一单片IC构成两个电压比较器并使这些比较器彼此靠近,使第一和第二电压比较器由温度变化引起的均匀偏移电压。 构成:电压比较器OP4,OP5通过将由三角波振荡电路OSC形成的三角形信号No作为参考信号来接收正模拟信号e1和负模拟信号-e1。 电压比较器OP4,OP5的输出信号N3,N4分别被发送到与门G的输入。 从与门G输出具有与e1,-e1的电压值成比例的脉冲宽度的信号OUT。为了类似地产生偏移电压,电压比较器OP4,OP5形成在同一半导体芯片上。
    • 75. 发明专利
    • Temperature compensation system of integrator
    • 整合器温度补偿系统
    • JPS5922170A
    • 1984-02-04
    • JP13033582
    • 1982-07-28
    • Hitachi LtdHitachi Micro Comput Eng Ltd
    • KIDA YUUZOUTAKAGI KATSUAKIHAGIWARA YOSHIMUNETORII SHIYUUICHIOGAWA KAZUYOSHI
    • G01R22/00G01R21/127G06G7/18G06G7/186
    • G06G7/18
    • PURPOSE:To correct an arithmetic error resulting from temperature fluctuations, by normalizing the time constant of the integrator of an arithmetic system on the basis of the time constant of the integrator of an LSI-implemented control system. CONSTITUTION:In an electronic (LSI-implemented) watthour meter, a constant- time counting circuit which counts a constant time tau based upon the frequency fDELTA of a triangular wave at room temperature or constant temperature outputs pulses at intervals of time tau to count and store the frequency fDELTA at intervals of time tau to a register, and the normalized count value of time tau is normally 1.0. Similarly, another counter counts output pulses fx corresponding to electric energy for the time tau, and the counted value is stored in the register. Then, the count value of electric energy pulses fx is divided by the count value of the frequency fDELTA at intervals of time tau to remove the time constant CR components of the integrators for generating respective frequencies which vary with temperature, obtaining temperature-compensated electric energy pulses f'x.
    • 目的:通过根据LSI实现的控制系统的积分器的时间常数对运算系统的积分器的时间常数进行归一化,来校正由于温度波动引起的算术误差。 构成:在电子(LSI实现的)电度表中,根据室温或恒温下三角波的频率fDELTA对恒定时间τ进行计数的定时计数电路以时间间隔τ输出脉冲以计数和 将频率fDELTA以时间τ的间隔存储到寄存器,并且时间τ的归一化计数值通常为1.0。 类似地,另一个计数器计数对应于时间τ的电能的输出脉冲fx,并且计数值被存储在寄存器中。 然后,将电能脉冲fx的计数值除以时间间隔τ的频率fDELTA的计数值,以去除用于产生随温度变化的各个频率的积分器的时间常数CR分量,获得温度补偿电能 脉冲f'x。
    • 77. 发明专利
    • Signal processor
    • 信号处理器
    • JPS5776633A
    • 1982-05-13
    • JP15205280
    • 1980-10-31
    • Hitachi Denshi LtdHitachi Ltd
    • SUGIYAMA SHIZUOHAGIWARA YOSHIMUNEMAEDA SHIGEMICHIAKAZAWA TAKASHIKOBAYASHI SEIJIKITA YASUHIROKIDA YUUZOU
    • G06F3/05G06F5/00G06F5/01G06F17/10
    • G06F5/017
    • PURPOSE:To eliminate the limitations of the bit length and bit arrangement of an input signal by arranging the bits of the input signal inversely of the bit arrangement inputted to a shift register when the least significant digit bit arrives as an initial bit. CONSTITUTION:When the least significant digit bit LSB comes first, an AND circuit 206 is selected by a control signal 22. Input data stored in a shift register 209 with the LSB at the beginning is transmitted to a data bus output switching circuit 210. When the data is outputted to a line 25, the control signal 22 permits switching so that the 2 of the data bus 25 is assigned to the bit SR15 of the register, and the 2 to the bit SRO. When the most significant digit bit MSB comes first, an AND circuit 205 is signified and the input data is stored in the shift register 209 being shifted successively from the SRO to SR15. In this case, a bus output switching circuit 210 sends the output, as it is, without changing the bit arrangement.
    • 目的:为了消除输入信号的位长度和位排列的限制,通过将输入信号的位与输入到移位寄存器的比特排列相反,当最低有效位被作为初始位到达时。 构成:当最低有效位LSB首先出现时,通过控制信号22选择与电路206.存储在移位寄存器209中的与开始的LSB的输入数据被发送到数据总线输出切换电路210.当 数据被输出到行25,控制信号22允许切换,使得数据总线25的2 0被分配给寄存器的位SR15,而2 <15>分配给位SR0。 当最高有效位MSB首先出现时,表示AND电路205,并且将输入数据存储在从SRO向SR15连续移位的移位寄存器209中。 在这种情况下,总线输出切换电路210原样发送输出,而不改变位的布置。