公开(公告)号：US20120208483A1

公开(公告)日：2012-08-16

申请号：US13422636

申请日：2012-03-16

申请人： Shoji OTAKA ,  Takafumi Yamaji ,  Tsutomu Sugawara ,  Yasuhiko Tanabe ,  Masahiro Hosoya ,  Hiroki Sakurai

发明人： Shoji OTAKA ,  Takafumi Yamaji ,  Tsutomu Sugawara ,  Yasuhiko Tanabe ,  Masahiro Hosoya ,  Hiroki Sakurai

IPC分类号： H04B1/16

CPC分类号： H04W52/0274 ,  H03L7/0802 ,  H03L7/1976 ,  H03L2207/50 ,  H04L25/0292 ,  H04L27/38 ,  H04L27/3818 ,  H04W52/0229 ,  Y02D70/142

摘要： A radio apparatus includes an antenna; an amplifier that amplifies a radio signal, received via the antenna; a first mixer that frequency converts the amplified radio signal to generate a first analog signal; a first A/D converter that converts the first analog signal to generate a first digital signal; a second mixer that frequency converts the amplified signal to generate a second analog signal; a second A/D converter means that converts the second analog signal to generate a second digital signal; a demodulator means that demodulates the first and second digital signals to generate a demodulated signal; a detector that detects a preamble from the first digital signal; and a control means that halts the second mixer and second A/D converter during the wait for the radio signal and that activates the second mixer and second A/D converter when the detector detects the preamble.

摘要翻译： 无线电设备包括天线; 放大器，放大经由天线接收的无线电信号; 第一混频器，其对放大的无线电信号进行频率转换以产生第一模拟信号; 第一A / D转换器，其转换第一模拟信号以产生第一数字信号; 第二混频器，其对放大的信号进行频率转换以产生第二模拟信号; 第二A / D转换器，用于转换第二模拟信号以产生第二数字信号; 解调器装置，解调第一和第二数字信号以产生解调信号; 检测器，其从所述第一数字信号检测前导码; 以及控制装置，其在等待无线电信号期间停止第二混频器和第二A / D转换器，并且当检测器检测到前导码时激活第二混频器和第二A / D转换器。

公开(公告)号：US20120214434A1

公开(公告)日：2012-08-23

申请号：US13421391

申请日：2012-03-15

申请人： Shoji OTAKA ,  Takafumi Yamaji ,  Tsutomu Sugawara ,  Yasuhiko Tanabe ,  Masahiro Hosoya ,  Hiroki Sakurai

发明人： Shoji OTAKA ,  Takafumi Yamaji ,  Tsutomu Sugawara ,  Yasuhiko Tanabe ,  Masahiro Hosoya ,  Hiroki Sakurai

IPC分类号： H04B7/12 ,  H04B7/00 ,  H04B7/08

CPC分类号： H03L7/18 ,  H03L7/0802 ,  H04L27/38 ,  H04L27/3818 ,  H04W52/0229 ,  H04W52/0274 ,  Y02D70/142

摘要： A radio apparatus includes a first receiver that is a processing unit for amplifying and frequency converting a radio signal received via an antenna, thereby outputting an IF signal; a detector unit for detecting a preamble signal from the IF signal; a second receiver for amplifying and quadrature demodulating the radio signal, thereby generating an I-signal and a Q-signal; a demodulator unit for demodulating the I-signal and Q-signal to generate a data signal; and a control unit for halting the operation of the first receiver and further activating the second receiver when the detector unit detects the preamble signal and for activating the first receiver and halting the operation of the second receiver when the demodulator unit completes the demodulation of the I-signal and Q-signal.

摘要翻译： 无线电设备包括：第一接收机，其是用于放大和频率转换经由天线接收的无线电信号的处理单元，从而输出IF信号; 检测单元，用于检测来自IF信号的前置信号; 第二接收机，用于放大和正交解调无线电信号，由此产生I信号和Q信号; 解调器单元，用于解调I信号和Q信号以产生数据信号; 以及控制单元，用于当所述检测器单元检测到所述前导信号并激活所述第一接收机并且当所述解调器单元完成所述I的解调时停止所述第二接收机的操作时，停止所述第一接收机的操作并进一步激活所述第二接收机 信号和Q信号。

公开(公告)号：US20090184690A1

公开(公告)日：2009-07-23

申请号：US12354261

申请日：2009-01-15

申请人： Shoji OTAKA ,  Toshiyuki Umeda

发明人： Shoji OTAKA ,  Toshiyuki Umeda

IPC分类号： H02J7/00

CPC分类号： H02J7/025 ,  H02J7/022 ,  H02J17/00 ,  H02J50/20 ,  Y02B40/90

摘要： A charger includes: a rectifier to rectify a received radio wave to generate a charging current; a potential generator to generate a bias voltage setting an operating point of the rectifier; and a controller to supply the bias voltage generated by the potential generator when an output voltage of the rectifier is equal to or larger than a predetermined value.

摘要翻译： 充电器包括：整流器，用于对接收的无线电波进行整流以产生充电电流; 电位发生器，用于产生设定整流器工作点的偏置电压; 以及控制器，当整流器的输出电压等于或大于预定值时，提供由电位发生器产生的偏置电压。

公开(公告)号：US20090295434A1

公开(公告)日：2009-12-03

申请号：US12359646

申请日：2009-01-26

申请人： Toshiyuki UMEDA ,  Shoji OTAKA

发明人： Toshiyuki UMEDA ,  Shoji OTAKA

IPC分类号： H02M11/00

CPC分类号： H03F3/082

摘要： A signal receiving device includes: a first conversion unit comprising a first input terminal to which a signal including a voltage signal and a reference voltage is inputted, and a first output terminal which output a first current signal voltage-current converted from the signal; a second conversion unit comprising a second input terminal to which the reference voltage is inputted, and a second output terminal which output a second current signal voltage-current converted from the reference voltage; a current mirror circuit comprising a third input terminal to which the second current signal is inputted, and a third output terminal which output a third current signal corresponding to the second current signal; and an output unit connected to both the first and third output terminals.

摘要翻译： 信号接收装置包括：第一转换单元，包括输入包括电压信号和参考电压的信号的第一输入端子，以及输出从该信号转换的电压电流的第一电流信号的第一输出端子; 第二转换单元，包括输入参考电压的第二输入端子和输出从参考电压转换的第二电流信号电压电流的第二输出端子; 包括输入第二电流信号的第三输入端的电流镜电路和输出与第二电流信号对应的第三电流信号的第三输出端; 以及连接到第一和第三输出端子的输出单元。

公开(公告)号：US20070092021A1

公开(公告)日：2007-04-26

申请号：US11537262

申请日：2006-09-29

申请人： Shoji OTAKA ,  Toru Hashimoto

发明人： Shoji OTAKA ,  Toru Hashimoto

IPC分类号： H04L27/02 ,  H04L27/12 ,  H03D3/00

CPC分类号： H04L27/364 ,  H03D7/166

摘要： A quadrature modulator for generating a transmission signal includes an orthogonal signal generator configured to generate a first local signal and a second local signal orthogonal to the first local signal, a mix-adder configured to generate a first RF signal based on a first baseband signal, the first local signal, and the second local signal, and a mix-subtracter configured to generate a second RF signal based on a second baseband signal, the first local signal, and the second local signal. The quadrature modulator also includes an output subtracter configured to determine a difference between the first RF signal and the second RF signal and to generate the transmission signal based on the difference; and an amplitude adjuster configured to adjust an amplitude of the first baseband signal before feeding it to the mix-adder or adjust an amplitude of the second baseband signal before feeding it to the mix-subtracter.

摘要翻译： 用于产生发送信号的正交调制器包括被配置为产生与第一本地信号正交的第一本地信号和第二本地信号的正交信号发生器，被配置为基于第一基带信号生成第一RF信号的混合加法器， 第一本地信号和第二本地信号，以及混合减法器，被配置为基于第二基带信号，第一本地信号和第二本地信号产生第二RF信号。 正交调制器还包括输出减法器，被配置为确定第一RF信号和第二RF信号之间的差异，并且基于该差产生发送信号; 以及幅度调整器，被配置为在将第一基带信号馈送到混合加法器之前调整第一基带信号的幅度，或者在将其馈送到混合减法器之前调整第二基带信号的幅度。

公开(公告)号：US20120208482A1

公开(公告)日：2012-08-16

申请号：US13370535

申请日：2012-02-10

申请人： Tsuyoshi KOGAWA ,  Koji OGURA ,  Shoji OTAKA ,  Hiroaki ISHIHARA

发明人： Tsuyoshi KOGAWA ,  Koji OGURA ,  Shoji OTAKA ,  Hiroaki ISHIHARA

IPC分类号： H04B7/00

CPC分类号： H04B17/318

摘要： According to one embodiment, a receiving apparatus includes a variable gain amplifier, comparator, and signal processor. The comparator compares a signal level of the second signal with a first threshold to generate a third signal, a signal level of the third signal being set to a high signal if the signal level of the second signal is greater than the first threshold. The signal processor determines presence of a signal if a rate of high signals in third signals for a period is greater than a second threshold. The second threshold is set to a first value when the control of the gain is performed and set to a second value when the demodulation processing is performed. The first value is greater than the second value.

摘要翻译： 根据一个实施例，接收设备包括可变增益放大器，比较器和信号处理器。 比较器将第二信号的信号电平与第一阈值进行比较以产生第三信号，如果第二信号的信号电平大于第一阈值，则将第三信号的信号电平设置为高信号。 如果在一段时间内的第三信号中的高信号的速率大于第二阈值，则信号处理器确定信号的存在。 当执行增益的控制时，第二阈值被设置为第一值，并且当执行解调处理时将其设置为第二值。 第一个值大于第二个值。

公开(公告)号：US20130200719A1

公开(公告)日：2013-08-08

申请号：US13719078

申请日：2012-12-18

申请人： Hiroaki ISHIHARA ,  Kohei ONIZUKA ,  Fumi MORITSUKA ,  Shoji OTAKA

发明人： Hiroaki ISHIHARA ,  Kohei ONIZUKA ,  Fumi MORITSUKA ,  Shoji OTAKA

IPC分类号： H02J17/00 ,  H02M5/42

CPC分类号： H02J50/12 ,  H02J5/005

摘要： There is provided a control device that estimates power transmission efficiency between a power transmitting unit and a power receiving unit. The power transmitting unit includes a first coil and a first capacitor connected to the first coil in parallel or in series. The power receiving unit includes a second coil and a second capacitor connected to the second coil in parallel or in series and receives electric power from the power transmitting unit through a coupling between the first coil and the second coil. The control device includes an estimator. The estimator compares a detected value of a first voltage or a first current at a first location in the power transmitting unit with a detected value of second voltage or second current at a second location in the power receiving unit and estimates the power transmission efficiency from the power transmitting unit to the power receiving unit.

摘要翻译： 提供了一种估计功率发送单元和受电单元之间的功率传输效率的控制装置。 电力传输单元包括并联或串联连接到第一线圈的第一线圈和第一电容器。 电力接收单元包括并联或串联连接到第二线圈的第二线圈和第二电容器，并且通过第一线圈和第二线圈之间的耦合从电力传输单元接收电力。 控制装置包括估计器。 估计器将功率发送单元中的第一位置处的第一电压或第一电流的检测值与电力接收单元中的第二位置处的第二电压或第二电流的检测值进行比较，并且估计电力传输效率 电力传输单元到电力接收单元。

公开(公告)号：US20070111673A1

公开(公告)日：2007-05-17

申请号：US11621148

申请日：2007-01-09

申请人： Shoji OTAKA ,  Hiroshi Tsurumi ,  Hiroshi Yoshida ,  Syuichi Sekine ,  Hiroyuki Kayano ,  Tadahiko Maeda

发明人： Shoji OTAKA ,  Hiroshi Tsurumi ,  Hiroshi Yoshida ,  Syuichi Sekine ,  Hiroyuki Kayano ,  Tadahiko Maeda

IPC分类号： H04B1/40 ,  H04B7/00

CPC分类号： H03D3/008 ,  H03F1/30 ,  H03F3/189 ,  H03F2200/294 ,  H03F2200/372 ,  H03F2200/504 ,  H03G3/3042 ,  H03L7/107 ,  H04B1/18 ,  H04B1/28 ,  H04B1/30 ,  H04B1/403 ,  H04B1/405

摘要： In a radio apparatus, the band of a loop filter of a synthesizer in a blank channel searching state is narrower than the band in a communicating state. In addition, a radio wave environment is measured. A characteristic necessary for the radio apparatus is determined corresponding to the measured-radio wave environment. The power is controlled corresponding to the performance of the radio apparatus. Thus, the power consumption is decreased. In addition, the efficiency of the output power is improved. In the radio apparatus, the current consumption of a power amplifier PA is measured. A matching circuit (LNA or MIX) of the antenna is adjusted with the measured result so as to decrease an antenna loss. In the radio apparatus, a DC offset is removed from the transmitted power and the reflected wave. When the DC offset is removed using an AC coupling capacitor, the deterioration of the frequency characteristic of the receiving portion is compensated with a capacitor in a digital signal process. In the radio apparatus, a transmission power detecting portion is structured as an IC chip. The transmission power detecting portion detects the transmission power corresponding to leakage currents in the power supply of the IC chip and the ground. Thus, when the power is detected, a power loss is suppressed. Consequently, the power consumption of the radio apparatus can be decreased.

摘要翻译： 在无线电设备中，空白信道搜索状态的合成器的环路滤波器的频带比通信状态的频带窄。 另外，测量无线电波环境。 根据测量的无线电波环境确定无线电设备所需的特性。 根据无线电设备的性能来控制功率。 因此，功耗降低。 此外，输出功率的效率提高。 在无线电设备中，测量功率放大器PA的电流消耗。 利用测量结果调整天线的匹配电路（LNA或MIX），以减少天线损耗。 在无线电设备中，从发射功率和反射波中去除DC偏移。 当使用AC耦合电容器去除DC偏移时，在数字信号处理中用电容器补偿接收部分的频率特性的劣化。 在无线电设备中，传输功率检测部分被构造为IC芯片。 发送功率检测部分检测与IC芯片和地面的电源中的泄漏电流相对应的发送功率。 因此，当检测到电力时，功率损失被抑制。 因此，可以减少无线电设备的功耗。

公开(公告)号：US20130234527A1

公开(公告)日：2013-09-12

申请号：US13684704

申请日：2012-11-26

申请人： Hiroaki ISHIHARA ,  Kohei ONIZUKA ,  Fumi MORITSUKA ,  Shoji OTAKA

发明人： Hiroaki ISHIHARA ,  Kohei ONIZUKA ,  Fumi MORITSUKA ,  Shoji OTAKA

IPC分类号： H02J17/00

CPC分类号： H02J50/12 ,  H02J17/00 ,  H02J50/80 ,  H04B5/0037 ,  H04B5/0075

摘要： According to one embodiment, a wireless electric power transmission device supplies electric power, transmitted wirelessly from a first device, to a load circuit. The device includes a power receiving resonance unit, a detecting unit which detects electric power information corresponding to the electric power supplied to the load circuit, and a control unit. The control unit determines whether to adjust at least one of a resonant frequency of the power receiving resonance unit, an output frequency of an alternating current power supply of the first device, and a resonant frequency of a power transmitting resonance unit of the first device, on the basis of a relationship in terms of magnitude between first electric power information when the impedance is a first impedance and second electric power information when the impedance is a second impedance.

摘要翻译： 根据一个实施例，无线电力传输装置提供从第一装置无线地传输到负载电路的电力。 该装置包括受电谐振单元，检测单元，其检测与提供给负载电路的电力相对应的电力信息，以及控制单元。 控制单元确定是否调整受电谐振单元的谐振频率，第一设备的交流电源的输出频率和第一设备的功率发送谐振单元的谐振频率中的至少一个， 基于阻抗为第一阻抗时的第一电力信息与阻抗为第二阻抗时的第二电力信息之间的关系的关系。

公开(公告)号：US20130181537A1

公开(公告)日：2013-07-18

申请号：US13717477

申请日：2012-12-17

申请人： Kohei ONIZUKA ,  Shoji OTAKA ,  Hiroaki ISHIHARA ,  Fumi MORITSUKA

发明人： Kohei ONIZUKA ,  Shoji OTAKA ,  Hiroaki ISHIHARA ,  Fumi MORITSUKA

IPC分类号： H01F38/14

CPC分类号： H01F38/14 ,  H02J5/005 ,  H02J7/025 ,  H02J50/12

摘要： There provided a power receiving device connectable with a first load circuit operating according to AC power from a power transmitting device in which the power receiver receives the AC power from the power transmitting device via magnetic coupling, the impedance adjuster is capable of converting at least one of voltage and current of the AC power received at the power receiver, the controller controls increase in output voltage of the power transmitting device, the AC power is supplied to the first load circuit via the impedance adjuster when the first load circuit is connected to the power receiving device, and the controller controls the impedance adjuster such that an input impedance of the impedance adjuster is lower than an input impedance of the first load circuit during at least a part of a time period where the output voltage of the power transmitting device is increased.

摘要翻译： 提供了一种电力接收装置，可与根据来自功率传输装置的AC电力工作的第一负载电路连接，其中电力接收器通过磁耦合从发送装置接收AC电力，阻抗调节器能够转换至少一个 在电力接收器处接收的AC电力的电压和电流，控制器控制电力传输装置的输出电压的增加，当第一负载电路连接到第一负载电路时，AC电力经由阻抗调节器被提供给第一负载电路 电力接收装置，并且所述控制器控制所述阻抗调节器，使得所述阻抗调节器的输入阻抗在所述电力发送装置的输出电压为的时间段的至少一部分期间低于所述第一负载电路的输入阻抗 增加。