公开(公告)号：US20100173600A1

公开(公告)日：2010-07-08

申请号：US12294801

申请日：2006-03-28

申请人： Keiko Izumi ,  Yasumi Imagawa ,  Makoto Sasaki ,  Satoshi Kaga ,  Hiroyuki Shioya ,  Hiroyuki Yokonaga

发明人： Keiko Izumi ,  Yasumi Imagawa ,  Makoto Sasaki ,  Satoshi Kaga ,  Hiroyuki Shioya ,  Hiroyuki Yokonaga

IPC分类号： H04B7/00

CPC分类号： H04B7/0871 ,  H04B7/0877

摘要： An object of the invention is to provide a diversity receiver and a reception system switching method capable of controlling diversity reception start and stop according to the switch condition responsive to person's liking and the use environment.An input section (109) allows the user to select and specify any of a diversity reception mode using two reception channels at all times, a single reception mode using a single reception channel at all times, or an automatic control reception mode for switching between the diversity reception and the single reception in response to the reception state of each mode, and a control section (107) determines a switching determination condition used in the automatic control reception mode according to mode selection information of other two modes. If the diversity reception selection frequency is large, the control section changes the determination condition to a determination condition for increasing the switching frequency to the diversity reception; if the single reception selection frequency is large, the control section changes the determination condition to a determination condition for increasing the switching frequency to the single reception.

摘要翻译： 本发明的目的是提供一种分集接收机和接收系统切换方法，该方法能够响应于人们的喜好和使用环境，根据切换条件来控制分集接收开始和停止。 输入部分（109）允许用户总是选择并指定使用两个接收信道的分集接收模式，一直使用单个接收信道的单个接收模式，或者用于在 分集接收和单个接收，并且控制部分（107）根据其他两种模式的模式选择信息确定在自动控制接收模式中使用的切换确定条件。 如果分集接收选择频率大，则控制部将确定条件改变为用于将开关频率增加到分集接收的确定条件; 如果单个接收选择频率大，则控制部将确定条件改变为用于将开关频率增加到单个接收的确定条件。

公开(公告)号：US20090191831A1

公开(公告)日：2009-07-30

申请号：US12295200

申请日：2006-04-04

申请人： Makoto Sasaki ,  Yasumi Imagawa ,  Satoshi Kaga ,  Kazuhiko Nakayama ,  Keiko Izumi

发明人： Makoto Sasaki ,  Yasumi Imagawa ,  Satoshi Kaga ,  Kazuhiko Nakayama ,  Keiko Izumi

IPC分类号： H04B1/06

CPC分类号： H04B7/0814 ,  H04B7/0871 ,  Y02D70/444

摘要： It is a theme of the present invention to provide a diversity receiving device and a receiving scheme switching method, capable of attaining a power saving by executing a switching between a diversity reception and a single reception with high accuracy. A receiving scheme switching portion (112) switches a receiving mode between a single reception and a diversity reception based on a receiving scheme switching threshold, updates the receiving scheme switching threshold based on the receiving rate calculated by a receiving rate calculating portion (110), switches the receiving mode into the single reception in which respective ones of antennas (101, 105), radio demodulating portions (102, 106), and decoding portions (103, 107) are employed respectively and also turns OFF respective power supplies of the remaining antenna (101 or 105), the remaining radio demodulating portion (102 or 106), and the remaining decoding portion (103 or 107) when the received quality calculated by the received quality calculating portion (111) exceeds the receiving scheme switching threshold, and switches the receiving mode into the diversity reception in which the antennas, the radio demodulating portions, and the decoding portions are employed in both branches when the received quality is below the receiving scheme switching threshold.

摘要翻译： 本发明的主题是提供一种分集接收装置和接收方式切换方法，其能够通过以高精度执行分集接收和单个接收之间的切换来实现省电。 接收方式切换部分（112）基于接收方式切换阈值在单个接收和分集接收之间切换接收模式，基于由接收速率计算部分（110）计算的接收速率更新接收方案切换阈值， 将接收模式切换到分别采用各自的天线（101,105），无线电解调部分（102,106）和解码部分（103,107）的单个接收，并且还关闭其余的各个电源 当由接收质量计算部分（111）计算的接收质量超过接收方案切换阈值时，天线（101或105），剩余无线电解调部分（102或106）和剩余解码部分（103或107） 将接收模式切换成在两个麸皮中采用天线，无线电解调部分和解码部分的分集接收 当接收质量低于接收方案切换阈值时。

公开(公告)号：US08000673B2

公开(公告)日：2011-08-16

申请号：US12295200

申请日：2006-04-04

申请人： Makoto Sasaki ,  Yasumi Imagawa ,  Satoshi Kaga ,  Kazuhiko Nakayama ,  Keiko Izumi

发明人： Makoto Sasaki ,  Yasumi Imagawa ,  Satoshi Kaga ,  Kazuhiko Nakayama ,  Keiko Izumi

IPC分类号： H04B1/06

CPC分类号： H04B7/0814 ,  H04B7/0871 ,  Y02D70/444

摘要： It is a theme of the present invention to provide a diversity receiving device and a receiving scheme switching method, capable of attaining a power saving by executing a switching between a diversity reception and a single reception with high accuracy. A receiving scheme switching portion (112) switches a receiving mode between a single reception and a diversity reception based on a receiving scheme switching threshold, updates the receiving scheme switching threshold based on the receiving rate calculated by a receiving rate calculating portion (110), switches the receiving mode into the single reception in which respective ones of antennas (101, 105), radio demodulating portions (102, 106), and decoding portions (103, 107) are employed respectively and also turns OFF respective power supplies of the remaining antenna (101 or 105), the remaining radio demodulating portion (102 or 106), and the remaining decoding portion (103 or 107) when the received quality calculated by the received quality calculating portion (111) exceeds the receiving scheme switching threshold, and switches the receiving mode into the diversity reception in which the antennas, the radio demodulating portions, and the decoding portions are employed in both branches when the received quality is below the receiving scheme switching threshold.

摘要翻译： 本发明的主题是提供一种分集接收装置和接收方式切换方法，其能够通过以高精度执行分集接收和单次接收之间的切换来实现省电。 接收方式切换部分（112）基于接收方式切换阈值在单个接收和分集接收之间切换接收模式，基于由接收速率计算部分（110）计算的接收速率更新接收方案切换阈值， 将接收模式切换到分别采用各自的天线（101,105），无线电解调部分（102,106）和解码部分（103,107）的单个接收，并且还关闭其余的各个电源 当由接收质量计算部分（111）计算的接收质量超过接收方案切换阈值时，天线（101或105），剩余无线电解调部分（102或106）和剩余解码部分（103或107） 将接收模式切换成在两个麸皮中采用天线，无线电解调部分和解码部分的分集接收 当接收质量低于接收方案切换阈值时。

公开(公告)号：US20090270031A1

公开(公告)日：2009-10-29

申请号：US12302107

申请日：2006-06-09

申请人： Hiroyuki Yokonaga ,  Yasumi Imagawa ,  Makoto Sasaki

发明人： Hiroyuki Yokonaga ,  Yasumi Imagawa ,  Makoto Sasaki

IPC分类号： H04B7/24

CPC分类号： H04B7/08

摘要： It is a theme of the present invention to provide a diversity receiving device and a diversity receiving method capable of making a diversity start not to cause receiving errors and also improving a sensitivity. There is a difference in a jamming wave level that is allowed to get the same received quality between the diversity reception and the single branch reception, so that a gain improving effect equivalent to a diversity gain is expected by the diversity reception in contrast to the single branch reception. Therefore, a dynamic range of the jamming wave from a transmitting portion (105) of a second radio system in a radio terminal is set smaller in expectation of the improving effect of such jamming wave resistance, and then a transmission control signal (S117) is acquired from a transmission signal controlling portion (106). Thus, the diversity reception is started before a start of transmission, and diversity control is applied adaptively without deterioration of the received quality. With such arrangement, NF of the system is improved at the same time, and as a result a receiving sensitivity in both the single branch reception and the diversity reception can be improved.

摘要翻译： 本发明的主题是提供一种分集接收装置和分集接收方法，其能够使分集开始不引起接收错误并且还提高灵敏度。 在允许在分集接收和单分支接收之间获得相同接收质量的干扰波电平存在差异，从而通过分集接收来预期与分集增益相当的增益改善效果，与单分 分会招待会。 因此，期望无线终端中的第二无线电系统的发送部分（105）的干扰波的动态范围被设置为较小，期望这种干扰波电阻的改善效果，然后发送控制信号（S117）是 从传输信号控制部分（106）获取。 因此，在开始发送之前开始分集接收，并且自适应地应用分集控制，而不会降低接收质量。 通过这样的配置，可以同时改善系统的NF，从而可以提高单分支接收和分集接收两者的接收灵敏度。

公开(公告)号：US20090238314A1

公开(公告)日：2009-09-24

申请号：US12297827

申请日：2006-04-20

申请人： Yasumi Imagawa ,  Kazuhiko Nakayama ,  Makoto Sasaki

发明人： Yasumi Imagawa ,  Kazuhiko Nakayama ,  Makoto Sasaki

IPC分类号： H04L27/08

CPC分类号： H04B7/0817 ,  H04B7/0871 ,  Y02D70/168 ,  Y02D70/444

摘要： It is a theme of the present invention to provide a diversity receiving device capable of reducing a power consumption to the utmost extent while keeping a predetermined received quality without measurement of an electric field strength and a fading pitch. A decision about whether or not the diversity reception is executed is made by sensing a received quality. Also, a diversity gain is reduced by a predetermined value by controlling the diversity gain in the diversity reception, then a receiving operation of a predetermined branch or a branch whose received quality is low is stopped when the received quality at that time is in excess of a previously set value, and then a supply of power to all circuit or a partial circuit of the branch whose receiving operation is stopped is shut down. Accordingly, a power consumption can be reduced to the utmost extent while keeping a predetermined received quality.

摘要翻译： 本发明的主题是提供一种分集接收装置，其能够在不测量电场强度和衰落间距的同时保持预定接收质量的同时最大程度地降低功耗。 通过感测接收到的质量来确定是否执行分集接收。 此外，通过控制分集接收中的分集增益，分集增益减小预定值，则当接收质量超过时，停止接收质量低的预定分支或分支的接收操作 先前设定的值，然后对接收操作停止的分支的所有电路或部分电路供电。 因此，可以在保持预定的接收质量的同时最大程度地降低功耗。

公开(公告)号：US08059770B2

公开(公告)日：2011-11-15

申请号：US12297827

申请日：2006-04-20

申请人： Yasumi Imagawa ,  Kazuhiko Nakayama ,  Makoto Sasaki

发明人： Yasumi Imagawa ,  Kazuhiko Nakayama ,  Makoto Sasaki

IPC分类号： H04B7/10 ,  H04L1/02

CPC分类号： H04B7/0817 ,  H04B7/0871 ,  Y02D70/168 ,  Y02D70/444

摘要： It is a theme of the present invention to provide a diversity receiving device capable of reducing a power consumption to the utmost extent while keeping a predetermined received quality without measurement of an electric field strength and a fading pitch. A decision about whether or not the diversity reception is executed is made by sensing a received quality. Also, a diversity gain is reduced by a predetermined value by controlling the diversity gain in the diversity reception, then a receiving operation of a predetermined branch or a branch whose received quality is low is stopped when the received quality at that time is in excess of a previously set value, and then a supply of power to all circuit or a partial circuit of the branch whose receiving operation is stopped is shut down. Accordingly, a power consumption can be reduced to the utmost extent while keeping a predetermined received quality.

摘要翻译： 本发明的主题是提供一种分集接收装置，其能够在不测量电场强度和衰落间距的同时保持预定接收质量的同时最大程度地降低功耗。 通过感测接收到的质量来确定是否执行分集接收。 此外，通过控制分集接收中的分集增益，分集增益减小预定值，则当接收质量超过时，停止接收质量低的预定分支或分支的接收操作 先前设定的值，然后对接收操作停止的分支的所有电路或部分电路供电。 因此，可以在保持预定的接收质量的同时最大程度地降低功耗。

公开(公告)号：US5894499A

公开(公告)日：1999-04-13

申请号：US796911

申请日：1997-02-06

申请人： Hiroshi Katayama ,  Yasumi Imagawa ,  Masahiro Mimura

发明人： Hiroshi Katayama ,  Yasumi Imagawa ,  Masahiro Mimura

IPC分类号： H04L27/148 ,  H04B1/16 ,  H04B7/26 ,  H04L27/00 ,  H04L27/14 ,  H04L27/227 ,  H04Q7/14

CPC分类号： H04L27/2273 ,  H04L2027/0057

摘要： A direct conversion receiver has: an I-low-pass filter 9 which has cut-off frequency switching device, switches over the cut-off frequency in accordance with the transmission rate, and eliminates high-frequency components from a modulated signal mixed with a first local signal; a Q-low-pass filter 10 which eliminates high-frequency components from a modulated signal mixed with the first local signal phase-shifted by 90 degrees; transmission rate detecting device 13 for detecting transmission rate information from transmission data detected by transmission data detecting device 12; and I- and Q-low-pass filter cut-off frequency controlling device 15 and 16 for generating I- and Q-control signals which control the cut-off frequency switching device, from the detected transmission rate. The cut-off frequencies of the low-pass filters are switched over in accordance with the transmission rate of reception.

摘要翻译： 直接转换接收机具有：具有截止频率切换装置的I低通滤波器9，根据传输速率切换截止频率，并且从混合有调制信号的调制信号中消除高频分量 第一个本地信号; Q-低通滤波器10，其从与第一本地信号相移90度混合的调制信号中消除高频分量; 传输速率检测装置13，用于从由传输数据检测装置12检测的传输数据检测传输速率信息; 以及用于从检测到的传输速率产生控制截止频率切换装置的I和Q控制信号的I和Q-低通滤波器截止频率控制装置15和16。 根据接收的传输速率切换低通滤波器的截止频率。

公开(公告)号：US06693977B2

公开(公告)日：2004-02-17

申请号：US09855613

申请日：2001-05-16

申请人： Hiroshi Katayama ,  Katsuaki Abe ,  Yasumi Imagawa

发明人： Hiroshi Katayama ,  Katsuaki Abe ,  Yasumi Imagawa

IPC分类号： H03D300

CPC分类号： H03D3/245 ,  H03D3/007

摘要： A direct conversion receiver includes a local oscillator for generating a first local oscillator signal having a variable frequency. A 90° phase shifter operates for shifting a phase of the first local oscillator signal by 90° to convert the first local oscillator signal into a second local oscillator signal. A first mixer operates for mixing a received RF signal and the first local oscillator signal. A second mixer operates for mixing the received RF signal and the second local oscillator signal. A first low pass filter processes an output signal of the first mixer. The first low pass filter has a controllable cutoff frequency. A second low pass filter processes an output signal of the second mixer. The second low pass filter has a controllable cutoff frequency. A demodulator recovers an information signal represented by the received RF signal from output signals of the first and second low pass filters. A frequency error detector operates for detecting an error between a frequency of a carrier of the received RF signal and the frequency of the first local oscillator signal in response to the information signal recovered by the demodulator. An oscillator controller operates for controlling the frequency of the first local oscillator signal in response to the error detected by the frequency error detector. A filter controller operates for controlling the cutoff frequencies of the first and second low pass filters in response to the error detected by the frequency error detector.

摘要翻译： 直接转换接收机包括用于产生具有可变频率的第一本机振荡器信号的本地振荡器。 90°移相器用于将第一本地振荡器信号的相位移位90°以将第一本机振荡器信号转换为第二本机振荡器信号。 第一混频器用于混合接收的RF信号和第一本地振荡器信号。 第二混频器用于混合接收到的RF信号和第二本地振荡器信号。 第一低通滤波器处理第一混频器的输出信号。 第一个低通滤波器具有可控的截止频率。 第二低通滤波器处理第二混频器的输出信号。 第二低通滤波器具有可控的截止频率。 解调器从第一和第二低通滤波器的输出信号中恢复由接收的RF信号表示的信息信号。 频率误差检测器用于响应于由解调器恢复的信息信号来检测接收的RF信号的载波的频率与第一本地振荡器信号的频率之间的误差。 振荡器控制器用于响应于由频率误差检测器检测到的误差来控制第一本地振荡器信号的频率。 滤波器控制器用于响应于由频率误差检测器检测到的误差来控制第一和第二低通滤波器的截止频率。

公开(公告)号：US5361408A

公开(公告)日：1994-11-01

申请号：US734447

申请日：1991-07-23

申请人： Kazunori Watanabe ,  Yasumi Imagawa ,  Makoto Hasegawa ,  Kazuaki Takahashi

发明人： Kazunori Watanabe ,  Yasumi Imagawa ,  Makoto Hasegawa ,  Kazuaki Takahashi

IPC分类号： H04L27/14 ,  H03D3/00 ,  H03D7/16 ,  H04B1/30 ,  H04B15/06 ,  H04B1/16 ,  H04B1/00

CPC分类号： H03D3/007 ,  H04B1/30 ,  H03D7/165

摘要： A direct conversion receiver for providing a direct conversion of a radio frequency signal having a carrier frequency comprises a local oscillator for substantially equal frequency to the carrier, and a semiconductor integrated circuit mounting mixers and amplifiers for amplifying inputs to the mixer. The amplifiers amplify the local oscillation signals and/or radio frequency signal inputted from the outside of the semiconductor integrated circuit and supply the amplified signals to the mixers. The mixers mix these inputted signals and output the mixed signals to the outside of the semiconductor integrated circuit. By thus forming the receiver, radiation of the local oscillation signals to outside of the receiver and leakage inside thereof can be suppressed.

摘要翻译： 用于提供具有载波频率的射频信号的直接转换的直接转换接收机包括用于与载波基本相等的频率的本地振荡器，以及用于放大输入到混频器的半导体集成电路安装混频器和放大器。 放大器放大从半导体集成电路的外部输入的本地振荡信号和/或射频信号，并将放大的信号提供给混频器。 混频器混合这些输入的信号，并将混合信号输出到半导体集成电路的外部。 通过这样形成接收器，可以抑制本地振荡信号的辐射到接收器外部并在其内部泄漏。

公开(公告)号：US5513387A

公开(公告)日：1996-04-30

申请号：US76847

申请日：1993-06-15

申请人： Yutaka Saito ,  Yasumi Imagawa

发明人： Yutaka Saito ,  Yasumi Imagawa

IPC分类号： H03G3/20 ,  H03G3/30 ,  H04B1/16

CPC分类号： H03G3/3052

摘要： In a receiver for effecting an intermittent reception operation, a reception unit including an antenna, a radio frequency amplifier, a local oscillator and a mixer, a received signal processing circuit for starting signal processing of a received signal from the reception unit after the passage of a predetermined time, a reception field level detection unit for detecting the level of the received signal and an automatic gain control unit for controlling the level of the received signal within the predetermined time and holding the controlled level after the passage of the predetermined time, are disposed in a plurality of stages.

摘要翻译： 在用于进行间歇接收操作的接收机中，包括天线，射频放大器，本地振荡器和混频器的接收单元，用于在通过之后从接收单元开始对接收信号进行信号处理的接收信号处理电路 预定时间，用于检测接收信号的电平的接收电平检测单元和用于在预定时间内控制接收信号的电平并且在经过预定时间后保持受控电平的自动增益控制单元是 设置在多个阶段。