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    • 21. 发明申请
    • POWER SUPPLY CIRCUIT AND ELECTRONIC DEVICE
    • 电源电路和电子设备
    • US20110009171A1
    • 2011-01-13
    • US12832290
    • 2010-07-08
    • Masatoshi WatanabeMitsuru Sugawara
    • Masatoshi WatanabeMitsuru Sugawara
    • H02J7/00G05F1/00H04W52/00
    • G05F1/56H02J7/0072Y10T307/76
    • According to one embodiment, a power supply circuit includes a power switch section, an error amplifier, a wiring and a reset switch section. The error amplifier has one input portion connected to the output terminal, the other input portion and an output portion. The error amplifier outputs the control potential via the output portion to make the resistance of the power switch section high so that potential applied to the one input portion is high to potential applied to the other input portion. The wiring connects a reference terminal to the other input potion. In addition, the reset switch section is configured to isolate the wiring from a baseline potential when the input terminal is supplied with a potential, and to connect the wiring to the baseline potential when the input terminal is not supplied with the potential.
    • 根据一个实施例,电源电路包括电源开关部分,误差放大器,布线和复位开关部分。 误差放大器具有连接到输出端子,另一个输入部分和输出部分的一个输入部分。 误差放大器通过输出部分输出控制电位,使电源开关部分的电阻变高,使得施加到一个输入部分的电位高到施加到另一个输入部分的电位。 接线将参考端子连接到另一个输入部分。 此外,复位开关部分被配置为当输入端被提供电位时将布线与基线电位隔离,并且当输入端未被提供电位时,将布线连接到基准电位。
    • 29. 发明授权
    • CDMA radio transmission system
    • CDMA无线电传输系统
    • US06307850B1
    • 2001-10-23
    • US08994942
    • 1997-12-19
    • Masatoshi Watanabe
    • Masatoshi Watanabe
    • H04L2730
    • H04B1/707
    • A CDMA receiving apparatus which can perform coherent detection in multi-code transmission with high accuracy by using a pilot signal, and can be easily produced. The apparatus demodulates data multi-code-transmitted through a plurality of channels, wherein in each of the systems for demodulating reception signals of the respective channels, there are provided spread code generating units for generating spread codes allocated to the channels, spread code generating units for generating spread codes in which a pilot signal is spread, and despreading units for despreading the reception signal on the basis of the spread codes generated by those spread code generating means, so that the transmission condition of the line is estimated on the basis of the pilot signal extracted by despreading and coherent detection of the reception signals of the respective channels is corrected on the basis of the result of the estimation. Because the transmission condition of the line can be estimated by the respective systems, information of the transmission condition need not be distributed to the respective systems.
    • 一种CDMA接收装置,其可以通过使用导频信号以高精度执行多码传输中的相干检测,并且可以容易地产生。 该装置解调通过多个信道发送的多码数据,其中在用于解调相应信道的接收信号的每个系统中,提供扩频码产生单元,用于产生分配给信道的扩频码,扩频码产生单元 用于产生其中扩展导频信号的扩频码,以及解扩单元,用于根据由这些扩展码产生装置生成的扩展码对接收信号进行解扩,以便基于 基于估计结果来校正通过解扩进行提取的导频信号和相应信道的接收信号的相干检测。 因为线路的发送条件可以由各个系统估计,所以传输条件的信息不需要分配给各个系统。
    • 30. 发明授权
    • Data decoding apparatus and data decoding method
    • 数据解码装置和数据解码方法
    • US06263474B1
    • 2001-07-17
    • US09158799
    • 1998-09-23
    • Masatoshi Watanabe
    • Masatoshi Watanabe
    • H03M1303
    • H03M13/4169H03M13/4107H03M13/47
    • Received signal 201 is input to one frame memory 202 and initial weight calculating section 203. One frame memory section 202 delays one frame of received signal 201 to input to floating point ACS processing section 204. On the other hand, initial weight calculating section 203 integrates an amplitude of the received signal, i.e., the absolute value of received signal level 201 over one frame, and inputs the resultant to floating point ACS section 204. Floating point ACS processing section 204 performs the ACS processing using the output from initial weight calculating section 203 as an initial weight, and inputs the path select result to trace back processing section 205. Trace back processing section 205 reproduces the state transition of the coder based on the input from Floating point ACS processing section 204 to output decoded information sequence.
    • 接收信号201被输入到一个帧存储器202和初始权重计算部分203.一个帧存储器部分202将一帧接收信号201延迟到输入到浮点ACS处理部分204.另一方面,初始权重计算部分203将 接收信号的振幅,即一帧上的接收信号电平201的绝对值,并将结果输入到浮点ACS部分204.浮点ACS处理部分204使用来自初始权重计算部分的输出执行ACS处理 203作为初始权重,并将路径选择结果输入到追溯处理部分205.追溯处理部分205基于来自浮点型ACS处理部分204的输入再现编码器的状态转换以输出解码信息序列。