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    • 1. 发明专利
    • Communication device and its control method
    • 通信设备及其控制方法
    • JP2010193126A
    • 2010-09-02
    • JP2009034827
    • 2009-02-18
    • Toshiba Corp株式会社東芝
    • KANEKO YUTSURUTA MAKOTOUMEDA TOSHIYUKIOTAKA SHOJIISHIHARA TAKESHISUGASAWA NOBUHIKOMERA KEISUKE
    • H04L12/28
    • PROBLEM TO BE SOLVED: To provide a communication device which is activated from a sleep mode by a signal received through a network, tis easily introduced into an existing network, and can reduce standby power. SOLUTION: The method is for controlling the communication device provided with a processor 40, a determination part 31 for determining whether or not a specified ID matches with a prescribed ID for activation, and an NIC 20. Accompanying the determination of a shift to a standby state by the processor 40, power supply to the processor 40 and the NIC 20 is stopped and power is supplied to the determination part 31. When a determined result by the determination part 31 matches, the power is supplied to the NIC 20. When the NIC 20 does not receive a prescribed activation packet within the prescribed time after the determination result matches, the power supply to the NIC 20 is stopped. When the NIC 20 receives the prescribed activation packet within the prescribed time after the determination result matches, the power is supplied to the processor 40 and the power supply to the determination part 31 is stopped. COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:为了提供从睡眠模式通过网络接收的信号激活的通信设备,容易引入到现有网络中,并且可以降低待机功率。 解决方案:该方法用于控制设置有处理器40的通信设备,用于确定指定ID是否与用于激活的规定ID匹配的确定部分31以及NIC 20。伴随移位确定 由处理器40进入待机状态,停止对处理器40和NIC 20的供电,并向确定部31提供电力。当确定部分31的确定结果相匹配时,电力被提供给NIC 20 当NIC20在确定结果匹配之后在规定时间内没有接收到规定的激活分组时,停止向NIC 20的电力供应。 当NIC20在确定结果匹配之后在规定时间内接收到规定的激活分组时,将电力提供给处理器40,并且停止对确定部分31的供电。 版权所有(C)2010,JPO&INPIT
    • 3. 发明专利
    • Digitally controlled oscillator and phase-locked loop circuit employing the same
    • 使用数字控制的振荡器和相位锁定环路
    • JP2009296375A
    • 2009-12-17
    • JP2008148435
    • 2008-06-05
    • Toshiba Corp株式会社東芝
    • SAKURAI HIROKIWATANABE OSAMUOTAKA SHOJITACHIBANA RYOICHI
    • H03B5/12H03B5/08H03K3/354H03K5/26H03L7/099
    • H03L7/0991H03B5/1212H03B5/1228H03B5/1253H03B5/1265H03L7/087H03L7/18H03L2207/06
    • PROBLEM TO BE SOLVED: To provide a digitally controlled oscillator (DCO) capable of controlling an oscillation frequency nearly linearly and precisely. SOLUTION: A DCO includes a differential inductor 200, a first variable capacitor bank 220, a second variable capacitor bank 240, and a negative resistor 230. The differential inductor 200 includes: a positive terminal 213 for outputting a positive phase oscillation signal; a negative terminal 214 for outputting a negative phase oscillation signal; and a center tap 210, with which a first contact 211 is provided at any arbitrary position between the positive terminal and the center tap and a second contact 212 is provided at a position, corresponding to the first contact, between the negative terminal and the center tap. The first variable capacitor bank 220 is connected between the positive terminal and the second terminal and includes a plurality of first capacitors each varying the capacitance thereof into binary capacitance in accordance with a first digital control code. The second variable capacitor bank 240 is connected between the first contact and the second contact and includes a plurality of second variable capacitors each varying the capacitance thereof into binary capacitance in accordance with a second digital control code. The negative resistor 230 is connected between the positive terminal and the negative terminal. COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:提供能够几乎线性和精确地控制振荡频率的数控振荡器(DCO)。 解决方案:DCO包括差分电感器200,第一可变电容器组220,第二可变电容器组240和负电阻器230.差分电感器200包括:正极端子213,用于输出正相振荡信号 ; 负端子214,用于输出负相位振荡信号; 以及中心抽头210,第一触点211设置在正端子和中心抽头之间的任意位置处,并且第二触点212设置在负极端子和中心部分之间的对应于第一触点的位置处 点击。 第一可变电容器组220连接在正端子和第二端子之间,并且包括多个第一电容器,每个第一电容器根据第一数字控制代码将其电容改变成二进制电容。 第二可变电容器组240连接在第一触点和第二触点之间,并且包括多个第二可变电容器,每个第二可变电容器根据第二数字控制代码将其电容改变成二进制电容。 负极电阻器230连接在正极端子和负极端子之间。 版权所有(C)2010,JPO&INPIT
    • 4. 发明专利
    • Signal receiving device
    • 信号接收装置
    • JP2009296066A
    • 2009-12-17
    • JP2008145054
    • 2008-06-02
    • Toshiba Corp株式会社東芝
    • UMEDA TOSHIYUKIOTAKA SHOJI
    • H03F3/34
    • H03F3/082
    • PROBLEM TO BE SOLVED: To provide a signal receiving device capable of outputting signals corresponding to feeble signals.
      SOLUTION: The signal receiving device includes: a first voltage/current conversion part, provided with a first input end to which voltage signals and a reference voltage are superimposed and inputted and a first output end, from which the voltage signals and the reference voltage superimposed and inputted to the first input end are voltage/current converted and outputted; a second voltage/current conversion part, provided with a second input end to which the reference voltage is inputted and a second output end, from which the reference voltage inputted to the second input end is voltage/current converted and outputted; a current mirror circuit, provided with a third input end, to which a current outputted from the second output end is inputted and a third output end from which the current corresponding to the current inputted to the third input end is outputted; and an output part connected to both of the first and third output ends.
      COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:提供能够输出与微弱信号对应的信号的信号接收装置。 信号接收装置包括:第一电压/电流转换部分,其具有叠加并输入电压信号和参考电压的第一输入端和第一输出端,​​电压信号和 叠加并输入到第一输入端的参考电压被电压/电流转换和输出; 第二电压/电流转换部分,设置有输入参考电压的第二输入端和第二输出端,输入到第二输入端的参考电压从该电压/电流转换和输出; 输入从第二输出端输出的电流的第三输入端的电流镜电路和输出与输入到第三输入端的电流对应的电流的第三输出端; 以及连接到第一和第三输出端两者的输出部分。 版权所有(C)2010,JPO&INPIT
    • 5. 发明专利
    • Power saving control device and method
    • 省电控制装置及方法
    • JP2009124592A
    • 2009-06-04
    • JP2007298417
    • 2007-11-16
    • Toshiba Corp株式会社東芝
    • MERA KEISUKEDOI YUSUKESAKAMOTO TAKEFUMIUMEDA TOSHIYUKIOTAKA SHOJI
    • H04Q9/00G06F21/20
    • H04L63/166H04L63/08H04W12/06H04W52/0229Y02B60/50Y02D70/00Y02D70/20
    • PROBLEM TO BE SOLVED: To provide a power saving control device for minimizing a circuit scale or power consumption. SOLUTION: Each time a radio operation signal including an authentication code is received, whether or not the authentication code in the radio operation signal is a valid authentication code matching one of a plurality of first to N-th authentication codes stored in a memory is decided, and when it is decided that the authentication code in the radio operation signal is valid, an operation signal is output to a main device. The number of times when the received authentication code in the radio operation signal matches the first authentication code among the plurality of authentication codes stored in the memory is counted, and when the count value is equal to a predetermined set value (a), or when the authentication signal in the radio operation signal matches the second and following authentications among the plurality of authentication codes (b), a new authentication code is generated, and at least one of the plurality of authentication codes stored in the memory is erased, and the new authentication code is stored in the memory. COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:提供一种用于最小化电路规模或功耗的节电控制装置。 解决方案:每当接收到包括认证码的无线电操作信号时,无线电操作信号中的认证码是否是与存储在一个认证码中的多个第一至第N个验证码中的一个相匹配的有效认证码 确定存储器,并且当确定无线电操作信号中的认证码有效时,将操作信号输出到主设备。 对无线电操作信号中接收到的认证码与存储在存储器中的多个认证码中的第一认证码进行匹配的次数被计数,并且当计数值等于预定设定值(a)时,或者当 无线电操作信号中的认证信号与多个认证码(b)中的第二和第二认证相匹配,生成新的认证码,并且存储在存储器中的多个认证码中的至少一个被擦除,并且 新的认证码存储在存储器中。 版权所有(C)2009,JPO&INPIT
    • 6. 发明专利
    • Frequency synthesizer and radio communication apparatus using same
    • 使用相同的频率合成器和无线电通信装置
    • JP2008236557A
    • 2008-10-02
    • JP2007075501
    • 2007-03-22
    • Toshiba Corp株式会社東芝
    • TACHIBANA RYOICHIOTAKA SHOJIWATANABE OSAMUHOSHINO HIROAKI
    • H03L7/187H03L7/08H03L7/087H03L7/10H04B1/40
    • H03L7/113H03B5/1215H03B5/1228H03B5/1253H03L7/0891H03L7/099H03L7/18
    • PROBLEM TO BE SOLVED: To enlarge an operation frequency range while preventing area expansion caused by the use of an inductor, yield reduction caused by manufacture variation, and the like. SOLUTION: There are provided a voltage controlled oscillator 106 which oscillates at a frequency controlled by a control voltage and outputs an oscillation signal; a prescaler 107 capable of controlling a free-running frequency to frequency-divide the oscillation signal and output a first frequency division signal; a programmable divider 102 which frequency-divides the first frequency division signal and outputs a second frequency division signal; and a phase comparator 108 which compares a phase of the second frequency division signal with the phase of a reference clock signal and outputs a signal corresponding to a phase difference. There are further provided a control voltage generating section for generating the control voltage in accordance with the phase difference; a frequency comparator 103 which compares the frequency of the second frequency division signal with that of the reference clock signal and outputs a signal corresponding to the frequency difference; and a control section 109 which controls the free-running frequency so as to minimize the frequency difference in accordance with the signal corresponding to the frequency difference. COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:为了在防止使用电感器引起的区域膨胀的同时扩大工作频率范围,由制造变化引起的成品率降低等。 解决方案:提供了一个压控振荡器106,其以由控制电压控制的频率振荡并输出振荡信号; 预分频器107,其能够控制自由运行的频率以对振荡信号进行分频并输出第一分频信号; 可编程分频器102,其对第一分频信号进行分频并输出第二分频信号; 以及相位比较器108,其将第二分频信号的相位与参考时钟信号的相位进行比较,并输出与相位差对应的信号。 还提供一个用于根据相位差产生控制电压的控制电压产生部分; 频率比较器103,其将第二分频信号的频率与参考时钟信号的频率进行比较,并输出与频率差相对应的信号; 以及控制部分109,其控制自由运行频率,以便根据与频率差对应的信号使频差最小化。 版权所有(C)2009,JPO&INPIT
    • 7. 发明专利
    • Orthogonal modulator, and vector correction method in the same
    • 正交调制器,以及其中的矢量校正方法
    • JP2007104007A
    • 2007-04-19
    • JP2005287517
    • 2005-09-30
    • Toshiba Corp株式会社東芝
    • OTAKA SHOJIHASHIMOTO KYO
    • H04L27/20H03C3/00H04L27/36
    • H04L27/364H03D7/166
    • PROBLEM TO BE SOLVED: To provide an orthogonal modulator that can reduce a phase error after manufacturer even if variations occur in the manufacturer, and hence can reduce manufacturing costs, and to provide a vector correction method in the orthogonal modulator. SOLUTION: In the vector correction method of an orthogonal modulation vector, LO I and LO Q signals, which have phases that are different by 90 degrees each other, are used, and an I channel baseband transmission signal I CH and a Q channel baseband signal Q CH are orthogonally modulated for generation. The method includes a step for generating an LO Q+I signal, where the vector of the LO I signal is added to that of the LO Q signal, and an LO Q-I signal, where the vector of the LO I signal is subtracted from that of the LO Q signal; and a step for controlling amplitude in at least one of the I channel baseband transmission signal I CH of the transmission signal, and Q channel baseband signal Q CH for vector correction. COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:提供一种正交调制器,即使在制造商中发生变化,也可以降低制造商的相位误差,因此可以降低制造成本,并且在正交调制器中提供矢量校正方法。 解决方案:在正交调制向量的向量校正方法中,具有彼此相差90度的相位的LO I 和LO Q 信号是 并且正交调制I信道基带发送信号I CH 和Q信道基带信号Q SB 。 该方法包括用于产生LO Q + I 信号的步骤,其中LO I 信号的向量被加到LO SB SB >信号和LO QI 信号,其中LO I 信号的向量从LO Q 信号的矢量中减去; 以及用于控制发送信号的I信道基带发送信号I CH 中的至少一个以及用于向量校正的Q信道基带信号Q SB CHS的振幅的步骤。 版权所有(C)2007,JPO&INPIT
    • 8. 发明专利
    • Digital receiver and reception method
    • 数字接收器和接收方法
    • JP2005348195A
    • 2005-12-15
    • JP2004166727
    • 2004-06-04
    • Toshiba Corp株式会社東芝
    • KUBO SHUNICHISATO KAZUMIOTAKA SHOJIOGURA KOJI
    • H04L27/38H04J11/00H04L27/22
    • PROBLEM TO BE SOLVED: To obtain a digital receiver and reception method for correcting an imbalance of I signal and Q signal after quadrature demodulation. SOLUTION: Unit stepwise waveform signals are inputted from a step waveform inputter 14 to both I signal and Q signal systems. The inputted step waveform signals are inputted to numerical computation circuits 41, 42 via BB filters 21, 22 and A/D converters 31, 32, respectively, and numerical differentiation is carried out there. Thus, an impulse response from the BB filter 21 to the A/D converter 31 where the I signal is passed through, is obtained in the numerical computation circuit 41. COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:获得用于校正正交解调之后的I信号和Q信号的不平衡的数字接收机和接收方法。 解决方案:逐步波形信号从步进波形输入器14输入到I信号和Q信号系统。 输入的步进波形信号分别通过BB滤波器21,22和A / D转换器31,32输入数字运算电路41,42,并在那里进行数值微分。 因此,在数值计算电路41中获得从BB滤波器21到I信号通过的A / D转换器31的脉冲响应。(C)2006,JPO&NCIPI
    • 10. 发明专利
    • Frequency converter and wireless communication unit employing the same
    • 频率转换器和无线通信单元使用它们
    • JP2003017944A
    • 2003-01-17
    • JP2001200160
    • 2001-06-29
    • Toshiba Corp株式会社東芝
    • OTAKA SHOJI
    • H03D7/00H03D7/14H04B1/26H04B1/40
    • H03D7/1425H03D7/1433H03D7/1441H03D2200/0025H03H7/19
    • PROBLEM TO BE SOLVED: To provide a frequency converter that can reduce distortion without much increasing the operating current. SOLUTION: In the frequency converter, a main mixer 3 for applying frequency conversion to an input RF signal with a local signal at a prescribed conversion gain and a distortion compensation mixer 4 for applying frequency conversion to the input RF signal with the local signal at a conversion gain lower than that of the main mixer 3 are arranged in parallel, and an adder circuit 5 sums an output signal from the main mixer and an output signal from the distortion compensation mixer in a relation of the inverted phase to each other to generate a frequency conversion output signal.
    • 要解决的问题:提供可以在不大大增加工作电流的情况下减少失真的变频器。 解决方案:在频率转换器中,用于以规定的转换增益对具有本地信号的输入RF信号进行频率转换的主混频器3和用于以一定的转换增益的本地信号向输入RF信号施加频率转换的失真补偿混频器4 转换增益低于主混频器3的转换增益,并且加法器电路5将来自主混频器的输出信号和来自失真补偿混频器的输出信号以倒置相位的关系相加,以产生 变频输出信号。