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1. 发明专利

JP2008035008A A/d converter, and radio receiver 有权
标题翻译： A / D转换器和无线电接收器
公开(公告)号：JP2008035008A
公开(公告)日：2008-02-14
申请号：JP2006204140
申请日：2006-07-27
申请人： Toshiba Corp , 株式会社東芝
发明人： YAMAJI TAKAFUMI , UENO TAKESHI
IPC分类号： H03M1/14 , H03K5/08 , H04B1/30
摘要： PROBLEM TO BE SOLVED: To provide an A/D converter which can be made inexpensive by reducing chip occupation area by decreasing the number of passive elements without causing an increase in power consumption. SOLUTION: The A/D converter has: a conversion section equipped with a plurality of cascaded conversion stages each having a quantizer quantizing each of m (n COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种A / D转换器，其可以通过减少无源元件的数量而减少功率消耗的增加来减少芯片占用面积而使其成本低廉。解决方案：A / D转换器具有：具有多个级联转换级的转换部分，每个转换级具有将表示n维向量的m（n

2. 发明专利

JP2006148966A Analog/digital converter and communications device 审中-公开
标题翻译：模拟/数字转换器和通信设备
公开(公告)号：JP2006148966A
公开(公告)日：2006-06-08
申请号：JP2006007533
申请日：2006-01-16
申请人： Toshiba Corp , 株式会社東芝
发明人： UENO TAKESHI , YAMAJI TAKAFUMI , KUROSE DAISUKE , ITO TOMOHIKO
IPC分类号： H03M1/12
摘要： PROBLEM TO BE SOLVED: To provide the analog/digital converter of which power consumption is reduced, circuit area size is reduced and operation speed is increased.
SOLUTION: Only N-channel transistors NM2, NM3 are of a high breakdown voltage type to which an input voltage In and a reference voltage Ref are applied, and other transistors MP1, MP2 are of a low breakdown voltage type. This enables a high-speed operation with keeping a dynamic range of an analog input high and also enables reduction of the circuit area. The A/D converter is provided with a plurality of power sources that differ in voltage, and a lower power voltage among them is fed to a comparator 200, to realize a low power consumption.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：为了提供降低功耗的模拟/数字转换器，减小了电路面积尺寸并提高了操作速度。解决方案：只有N沟道晶体管NM2，NM3具有施加输入电压In和参考电压Ref的高击穿电压类型，而其它晶体管MP1，MP2具有低击穿电压类型。这使得能够将模拟输入的动态范围保持在高速度并且还能够减小电路面积的高速操作。 A / D转换器具有多个不同电压的电源，并且其中较低的电源电压被馈送到比较器200，以实现低功耗。版权所有（C）2006，JPO＆NCIPI

3. 发明专利

JP2004304426A Operational amplifier circuit, sample-and-hold circuit and filter circuit employing the same 有权
标题翻译：操作放大器电路，采样保持电路和使用其的过滤器电路
公开(公告)号：JP2004304426A
公开(公告)日：2004-10-28
申请号：JP2003093575
申请日：2003-03-31
申请人： Toshiba Corp , 株式会社東芝
发明人： ITAKURA TETSURO , YAMAJI TAKAFUMI
IPC分类号： G11C27/02 , H03F3/45 , H03F3/68
CPC分类号： H03F3/45475 , G11C27/024 , G11C27/026 , H03F3/45632 , H03F3/45928 , H03F3/45977 , H03F2203/45101 , H03F2203/45138 , H03F2203/45428 , H03F2203/45574 , H03H11/1243 , H03H11/32
摘要： PROBLEM TO BE SOLVED: To provide an operational amplifier circuit whose frequency characteristics are improved by sufficiently suppressing an in-phase signal and reducing the number of internal nodes into one in each route of a differential signal. SOLUTION: The operational amplifier circuit is composed of a first and a second inverted amplifier circuits (A1, A2) for inputting a first and a second input signals, a third inverted amplifier circuit (A3) for inputting a pseudo in-phase output signal and an output signal of the first inverted amplifier circuit and outputting first and second output signals, a fourth inverted amplifier circuit (A4) for inputting the pseudo in-phase output signal and an output signal of the second inverted amplifier circuit and outputting the third and fourth output signals, and a first and a second non-inverted amplifier circuits (A5, A6) for inputting the pseudo in-phase output signal and feeding it back to the outputs of the first and second inverted amplifier circuits. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：解决的问题：提供通过充分抑制同相信号并将内部节点数减少到差分信号的每个路径中的一个来提供其频率特性得到改善的运算放大器电路。解决方案：运算放大器电路由用于输入第一和第二输入信号的第一和第二反相放大器电路（A1，A2）组成，第三反相放大器电路（A3）用于输入伪同相输出信号和第一反相放大器电路的输出信号，并输出第一和第二输出信号;第四反相放大器电路（A4），用于输入伪同相输出信号和第二反相放大器电路的输出信号，并输出第三和第四输出信号，以及用于输入伪同相输出信号并将其馈送到第一和第二反相放大器电路的输出的第一和第二非反相放大器电路（A5，A6）。版权所有（C）2005，JPO＆NCIPI

4. 发明专利

JP2004304312A Analog/digital converter and communication apparatus 审中-公开
公开(公告)号：JP2004304312A
公开(公告)日：2004-10-28
申请号：JP2003092356
申请日：2003-03-28
申请人： Toshiba Corp , 株式会社東芝
发明人： UENO TAKESHI , YAMAJI TAKAFUMI , KUROSE DAISUKE , ITO TOMOHIKO
IPC分类号： H03M1/12 , H03F3/45 , H03M1/34 , H04L27/38 , H04M1/60
CPC分类号： Y02D70/00
摘要： PROBLEM TO BE SOLVED: To provide an analog-digital converter intended to reduce the power consumption, save the size of a circuit area and increase the operating speed. SOLUTION: Only n-channel transistors NM2, NM3 are of a high withstanding voltage type to which an input voltage In and a reference voltage Ref are applied, and other transistors MP1, MP2 are of a low withstanding voltage type. This enables the high speed operation with holding the dynamic range of the analog input high and also the reduction of the circuit area. The A/D converter is provided with a plurality of power sources different in voltage, and a low power voltage among them is fed to a comparator 200 to realize a low power consumption. COPYRIGHT: (C)2005,JPO&NCIPI

5. 发明专利

JP2014057297A Semiconductor device and da converter 审中-公开
标题翻译：半导体器件和DA转换器
公开(公告)号：JP2014057297A
公开(公告)日：2014-03-27
申请号：JP2013162703
申请日：2013-08-05
申请人： Toshiba Corp , 株式会社東芝
发明人： YAMAJI TAKAFUMI , OGASAWARA YOSUKE
IPC分类号： H03M1/10
CPC分类号： G06G7/14 , H03F1/32 , H03F1/3223 , H03F3/45179 , H03F3/45744 , H03F2203/45032 , H03F2203/45262
摘要： PROBLEM TO BE SOLVED: To provide a DA converter, for example, capable of improving the S/N ratio of a signal to be obtained.SOLUTION: There is provided a DA converter correcting a DC offset of an amplifier that includes an input terminal, an output terminal, a control terminal, and a D/A conversion section. The input terminal is connected to an input node of the amplifier. The output terminal is connected to an output node of the amplifier. The control terminal receives offset correction data. While D/A-converting the offset correction data received at the control terminal and generating an offset correction signal, the D/A conversion section amplifies a signal received at the input terminal, adds the amplified signal to the generated offset correction signal, and supplies the resultant signal to the output terminal.
摘要翻译：要解决的问题：提供例如能够提高要获得的信号的S / N比的DA转换器。解决方案：提供一种校正包括输入端子的放大器的DC偏移的DA转换器，输出端子，控制端子和D / A转换部分。输入端连接到放大器的输入节点。输出端子连接到放大器的输出节点。控制终端接收偏移校正数据。当D / A转换在控制终端处接收到的偏移校正数据并产生偏移校正信号时，D / A转换部分放大在输入端接收到的信号，将放大的信号与产生的偏移校正信号相加，结果信号到输出端。

6. 发明专利

JP2010147622A Communication device, and communication method 审中-公开
标题翻译：通信设备和通信方法
公开(公告)号：JP2010147622A
公开(公告)日：2010-07-01
申请号：JP2008320424
申请日：2008-12-17
申请人： Toshiba Corp , 株式会社東芝
发明人： AKITA IPPEI , YAMAJI TAKAFUMI , SAI AKIHIDE
IPC分类号： H04B1/10
CPC分类号： H04B1/109 , H04W52/0238 , Y02D70/00 , Y02D70/40
摘要： PROBLEM TO BE SOLVED: To provide a communication device capable of optimizing the power consumption and phase noise of an oscillator, and to provide a receiving method. SOLUTION: The communication device includes: a first oscillating part to generate a local signal of prescribed quality on the basis of a control signal; a frequency converting part to convert a frequency of an input signal by using the local signal; a filter to make a desired signal pass through from a signal whose frequency is converted by the frequency converting part; and a control part to generate a control signal on the basis of a signal before passing the filter and a signal that passes through the filter to give the control signal to the first oscillating part. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供能够优化振荡器的功耗和相位噪声的通信装置，并提供接收方法。解决方案：通信设备包括：第一振荡部分，用于基于控制信号产生规定质量的本地信号; 频率转换部分，用于通过使用本地信号来转换输入信号的频率; 滤波器，用于使频率由频率转换部转换的信号通过期望信号; 以及控制部分，用于根据通过滤波器之前的信号和通过滤波器的信号产生控制信号，以向第一振荡部分提供控制信号。版权所有（C）2010，JPO＆INPIT

7. 发明专利

JP2009232425A Transmitter 审中-公开
标题翻译：发射机
公开(公告)号：JP2009232425A
公开(公告)日：2009-10-08
申请号：JP2008078739
申请日：2008-03-25
申请人： Toshiba Corp , 株式会社東芝
发明人： YAMAJI TAKAFUMI
IPC分类号： H04B1/04
CPC分类号： H04L27/368
摘要： PROBLEM TO BE SOLVED: To reduce the influence due to mixed components of higher harmonic component in a clock signal used for a DAC (digital-to-analogue converter) with a carrier signal or with the higher harmonic component, while simplifying or dispensing with a baseband filter.
SOLUTION: A transmitter includes: a DAC 11 which converts a digital baseband signal, corresponding to a signal to be transmitted into an analog baseband signal; a loop filter 13 which generates a filter signal, by amplifying a low-frequency component of a residual signal obtained by subtracting a feedback baseband signal from the analog baseband signal, and suppressing the high-frequency components of the residual signal; a modulator 14, which modulates the filter signal by multiplying it by a carrier signal to produce a modulated signal; a power amplifier 15 for amplifying the modulated signal; a high-frequency filter 16, which has a pass bandwidth narrower than the frequency of a clock signal and removes an unwanted components contained in the modulated signal to obtain a transmission RF signal; and a demodulator 19, which uses the carrier signal to demodulate a feedback RF signal branched from the transmission RF signal, and produces a feedback baseband signal.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：为了减少用于具有载波信号或高次谐波分量的DAC（数模转换器）所使用的时钟信号中的高次谐波分量的混合分量的影响，同时简化或分配基带滤波器。发射机包括：DAC 11，其将数字基带信号转换成与发射的信号相对应的模拟基带信号; 环路滤波器13，通过放大通过从模拟基带信号中减去反馈基带信号而获得的残差信号的低频分量，并抑制残留信号的高频分量，生成滤波信号; 调制器14，其通过将滤波器信号乘以载波信号来调制滤波器信号以产生调制信号; 用于放大调制信号的功率放大器15; 高频滤波器16，其具有比时钟信号的频率窄的通带宽度，并且去除包含在调制信号中的不需要的分量，以获得发送RF信号; 以及解调器19，其使用载波信号来解调从发送RF信号分支的反馈RF信号，并产生反馈基带信号。版权所有（C）2010，JPO＆INPIT

8. 发明专利

JP2008252816A Frequency converter, and radio receiver employing the same frequency converter 审中-公开
标题翻译：频率转换器和使用相同频率转换器的无线电接收器
公开(公告)号：JP2008252816A
公开(公告)日：2008-10-16
申请号：JP2007094906
申请日：2007-03-30
申请人： Toshiba Corp , 株式会社東芝
发明人： YAMAJI TAKAFUMI
IPC分类号： H03D7/00 , H03D7/14 , H04B1/26
CPC分类号： H03D7/1441 , H03D7/1433 , H03D7/1458 , H03D2200/0025
摘要： PROBLEM TO BE SOLVED: To relax the effect of flicker noise while improving the conversion gain of a frequency converter by applying, between an input circuit and a switch circuit, a current corresponding to an output voltage of the frequency converter. SOLUTION: A frequency converter 1 of the present invention comprises: an input circuit 10 which converts an inputted voltage signal into a current signal; a switch circuit 20 which supplies or does not supply the converted current signal to output terminals 30, 31 (differential output) in accordance with a local oscillation signal; a load circuit 50 which is connected with the output terminals 30, 31 and through which a current to be supplied to the input circuit 10 via the switch circuit 20 passes; and a control circuit 40 which adds, to the current signal, a current determined in accordance with a difference between an inphase voltage of the output terminals 30, 31 and a predetermined reference voltage. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：通过在输入电路和开关电路之间施加与变频器的输出电压相对应的电流，来提高变频器的转换增益，来缓和闪烁噪声的影响。解决方案：本发明的变频器1包括：输入电路10，其将输入的电压信号转换为电流信号; 开关电路20，其根据本地振荡信号提供或不将转换的电流信号提供给输出端子30,31（差分输出）; 与输出端子30,31连接的负载电路50，通过开关电路20供给输入电路10的电流通过该负载电路50; 以及控制电路40，其对当前信号加上根据输出端子30,31的同相电压和预定参考电压之间的差异确定的电流。版权所有（C）2009，JPO＆INPIT

9. 发明专利

JP2010219697A Receiver 审中-公开
标题翻译：接收器
公开(公告)号：JP2010219697A
公开(公告)日：2010-09-30
申请号：JP2009062009
申请日：2009-03-13
申请人： Toshiba Corp , 株式会社東芝
发明人： YAMAJI TAKAFUMI , MATSUNO JUNYA , AOYAMA HIROMITSU
IPC分类号： H04B1/26
CPC分类号： H04B1/30 , H04B1/123
摘要： PROBLEM TO BE SOLVED: To provide a receiver which enables broadband reception, at low cost.
SOLUTION: The receiver includes a high-frequency filter 111 which extracts from a radio signal, a high-frequency signal which is to be an object of reception; a frequency converter 121, which converts the frequency of the high-frequency signal by using a first local signal 11 and obtains a first baseband signal; a frequency converter 122, which converts the frequency of the high-frequency signal using a second local signal 12, having a frequency equal to an integral multiple of the frequency of the first local signal 11, to obtain a second baseband signal; and a subtraction processing unit 140, which subtracts signals obtained by multiplying the second baseband signal by a control coefficient and adjusting amplitude from the first baseband signal and obtains a residual signal.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供以低成本实现宽带接收的接收机。解决方案：接收机包括从无线电信号中提取作为接收对象的高频信号的高频滤波器111; 频率转换器121，其通过使用第一本机信号11来转换高频信号的频率，并获得第一基带信号; 频率转换器122，其使用具有等于第一本机信号11的频率的整数倍的频率的第二本地信号12来转换高频信号的频率，以获得第二基带信号; 以及减法处理单元140，其减去通过将第二基带信号乘以控制系数而获得的信号，并且从第一基带信号调整幅度，并获得残留信号。版权所有（C）2010，JPO＆INPIT

10. 发明专利

JP2010109918A Frequency converting circuit and receiver 审中-公开
标题翻译：频率转换电路和接收器
公开(公告)号：JP2010109918A
公开(公告)日：2010-05-13
申请号：JP2008282287
申请日：2008-10-31
申请人： Toshiba Corp , 株式会社東芝
发明人： MATSUNO JUNYA , YAMAJI TAKAFUMI , ITAKURA TETSURO
IPC分类号： H04B1/26 , H03D7/14
CPC分类号： H04B1/30
摘要： PROBLEM TO BE SOLVED: To provide a receiver capable of suppressing an interference wave having a frequency that is approximately integer-fold a fundamental frequency of a local signal.
SOLUTION: The receiver includes: a multi-phase mixer 101 for multiplying multi-phase local signals with the number of signals as many as an integer having a first prime factor and a second prime factor different from the first prime factor by a received radio signal to generate first multi-phase baseband signals with the number of signals as many as the integer; first processing circuits 102 and 103-1 for generating second multi-phase baseband signals by suppressing, under in-phase mode, each of first multi-phase signal groups obtained by dividing the first multi-phase baseband signals into groups for the unit of signals as many as the first prime factor; and second processing circuits 102 and 103-m for generating third multi-phase baseband signals by suppressing, under in-phase mode, each of second multi-phase signal groups obtained by dividing the second multi-phase baseband signals into groups for the unit of signals as many as the second prime factor.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种能够抑制具有本地信号的基频近似整数倍的频率的干扰波的接收机。解决方案：接收机包括：多相混频器101，用于将多相本地信号与多个具有第一素数因子的整数的信号数和与第一素因子不同的第二素因子乘以一个接收无线电信号以产生具有多个整数的信号数量的第一多相基带信号; 第一处理电路102和103-1，用于通过在同相模式下抑制通过将第一多相基带信号分组为信号单元获得的每个第一多相信号组来产生第二多相基带信号与第一个素质因素一样多; 以及第二处理电路102和103-m，用于通过在同相模式下抑制通过将第二多相基带信号划分为以单位为单位获得的每个第二多相信号组来产生第三多相基带信号信号与第二个素因子一样多。版权所有（C）2010，JPO＆INPIT

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