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    • 2. 发明授权
    • Semiconductor integrated circuit device and contactless IC card
    • 半导体集成电路器件和非接触式IC卡
    • US07357330B2
    • 2008-04-15
    • US11432378
    • 2006-05-12
    • Kazuki WatanabeYutaka NakadaiShinichi Ozawa
    • Kazuki WatanabeYutaka NakadaiShinichi Ozawa
    • G06K19/06
    • G06K19/0723
    • A semiconductor integrated circuit device (IC) and a contactless IC card including a receiver circuit that is able to stably demodulate information signals superimposed on AC signals from an interrogator. The receiver circuit included in the IC is equipped with antenna terminals, a power supply circuit, and a filter circuit. The information signal from which a high frequency component was eliminated through the filter circuit is input via a capacitor to an inverting input terminal of an operational amplifier and a reference voltage is input to a non-inverting input terminal thereof. After the information signal is fed back through a feedback path to the non-inverting input terminal of the operational amplifier, that signal is amplified and the amplified information signal is binarised by a binarising circuit, thereby data transmitted from the interrogator is demodulated. The contactless IC card comprises an antenna coil and the IC including this receiver circuit.
    • 一种半导体集成电路器件(IC)和非接触式IC卡,包括能够稳定地解调来自询问器的叠加在AC信号上的信息信号的接收电路。 IC中包括的接收器电路配备有天线端子,电源电路和滤波电路。 通过滤波器电路消除高频分量的信息信号通过电容器输入到运算放大器的反相输入端,并且参考电压被输入到其非反相输入端。 在通过反馈路径将信息信号反馈到运算放大器的非反相输入端之后,该信号被放大,并且放大的信息信号由二元化电路二进制化,从而从询问器发送的数据被解调。 非接触IC卡包括天线线圈和包括该接收器电路的IC。
    • 8. 发明授权
    • Carry foreknowledge adder
    • 携带预知加法器
    • US07111034B2
    • 2006-09-19
    • US10352903
    • 2003-01-29
    • Shinichi Ozawa
    • Shinichi Ozawa
    • G06F7/508
    • G06F7/508G06F2207/5063
    • A carry foreknowledge adder comprise an adding circuit for adding binary numbers A and B of n bits; and a plurality of carry foreknowledge circuit blocks that respectively corresponding to divisional portions obtained by dividing the A and the B through setting a unit length. Each carry foreknowledge circuit block has a plurality of arithmetic operating portions (j, i) in correspondence to each bit, that respectively receive a block carry Cin corresponding to the most significant bit in a lower the carry foreknowledge circuit block from the lower carry foreknowledge circuit block corresponding to lower divisional portion, each arithmetic operating portion arithmetically determining the carry Ci on the basis of the block carry Cin, and outputting the carry Ci to the adding circuit, and each arithmetic operating portion (j, i) has a logic circuit portion which receives the block carry Cin and is arranged on an output terminal side.
    • 进位预知加法器包括用于加入n位的二进制数A和B的加法电路; 以及分别对应于通过设置单位长度而通过划分A和B获得的分割部分的多个进位预知电路块。 每个进位预知电路块具有对应于每个位的多个算术运算部分(j,i),分别在较低的进位预知中分别接收对应于最高有效位的中的块进位C < 电路块与较低分位部分相对应的较低进位预知电路块,每个算术运算部分基于中的块进位C 算术确定进位C i, 向加法电路输出进位C i i i,并且每个算术运算部分(j,i)都具有逻辑电路部分,其接收中的块进位C&amp; 输出端子侧。
    • 9. 发明申请
    • Semiconductor integrated circuit device and contactless IC card
    • 半导体集成电路器件和非接触式IC卡
    • US20060202043A1
    • 2006-09-14
    • US11432378
    • 2006-05-12
    • Kazuki WatanabeYutaka NakadaiShinichi Ozawa
    • Kazuki WatanabeYutaka NakadaiShinichi Ozawa
    • G06K19/06
    • G06K19/0723
    • A semiconductor integrated circuit device (IC) and a contactless IC card including a receiver circuit that is able to stably demodulate information signals superimposed on AC signals from an interrogator. The receiver circuit included in the IC is equipped with antenna terminals, a power supply circuit, and a filter circuit. The information signal from which a high frequency component was eliminated through the filter circuit is input via a capacitor to an inverting input terminal of an operational amplifier and a reference voltage is input to a non-inverting input terminal thereof. After the information signal is fed back through a feedback path to the non-inverting input terminal of the operational amplifier, that signal is amplified and the amplified information signal is binarized by a binarizing circuit, thereby data transmitted from the interrogator is demodulated. The contactless IC card comprises an antenna coil and the IC including this receiver circuit.
    • 一种半导体集成电路器件(IC)和非接触式IC卡,包括能够稳定地解调来自询问器的叠加在AC信号上的信息信号的接收电路。 IC中包括的接收器电路配备有天线端子,电源电路和滤波电路。 通过滤波器电路消除高频分量的信息信号通过电容器输入到运算放大器的反相输入端,并且参考电压被输入到其非反相输入端。 在通过反馈路径将信息信号反馈到运算放大器的非反相输入端之后,该信号被放大,并且放大的信息信号由二值化电路二进制化,由此从询问器发送的数据被解调。 非接触IC卡包括天线线圈和包括该接收器电路的IC。