专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JP2009200571A Reception device 审中-公开
标题翻译：接收装置
公开(公告)号：JP2009200571A
公开(公告)日：2009-09-03
申请号：JP2008037095
申请日：2008-02-19
申请人： Sharp Corp , シャープ株式会社
发明人： SHIMODA MAMORU
IPC分类号： H04B1/16 , H04B1/10
摘要： PROBLEM TO BE SOLVED: To provide a reception device which can be switched to suitable filter characteristics by considering the degree of influence of an adjacent channel signal on a desired signal.
SOLUTION: A power measuring circuit 9 measures electric power of a desired signal when measuring electric power of an output signal from a first band-pass filter 4, and measures electric power of the desired signal and the adjacent channel signal when measuring electric power of an output signal from a second band-pass filter 5. As the degree of influence of the adjacent channel signal on the desired signal, the SN ratio of both the signals is calculated from the measured values. On the basis of the SN ratio and a frequency error amount by automatic frequency control, a CPU 7 outputs an AFC signal for following a reception signal to a local oscillator 2, and also outputs a signal (c) to vary characteristics of the first band-pass filter 4 thereto. The first band-pass filter 4 removes the adjacent channel signal and also passes the desired signal therethrough.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种可以通过考虑相邻信道信号对期望信号的影响程度来切换到适当滤波器特性的接收装置。电力测量电路9在测量来自第一带通滤波器4的输出信号的电力时测量期望信号的电力，并且在测量电力时测量期望信号和相邻信道信号的电力来自第二带通滤波器5的输出信号的功率。作为相邻信道信号对期望信号的影响程度，从测量值计算两个信号的SN比。基于SN比和通过自动频率控制的频率误差量，CPU7将用于跟随接收信号的AFC信号输出到本地振荡器2，并且还输出信号（c）以改变第一频带的特性通过滤波器4。第一带通滤波器4去除相邻的信道信号，并且也通过所需的信号。版权所有（C）2009，JPO＆INPIT

2. 发明专利

JP2013219588A Receiver 有权
标题翻译：接收器
公开(公告)号：JP2013219588A
公开(公告)日：2013-10-24
申请号：JP2012089274
申请日：2012-04-10
申请人： Sharp Corp , シャープ株式会社
发明人： YAMAGUCHI HIROYUKI , SHIMODA MAMORU
IPC分类号： H04N5/64 , H04B1/08
摘要： PROBLEM TO BE SOLVED: To provide a receiver that is less influenced by EMC or crosstalk and reduced in mounting space.SOLUTION: A receiver 51 includes a distributor 1 and a tuner 5. The distributor 1 includes a metallic case 1a, an antenna terminal 2, and an output terminal 3. The output terminal 3 is disposed on a side face 1d of the metallic case 1a. The tuner 5 includes an input terminal 4 disposed on a side face 5c of a metallic case 5a. The side face 5c faces the side face 1d of the metallic case 1a. The input terminal 4 of the tuner 5 is configured to connect directly to the output terminal 3 of the distributor 1, and disposed on the side face 5c so as to face the output terminal 3 of the distributor 1.
摘要翻译：要解决的问题：提供受EMC或串扰较少影响并减少安装空间的接收器。解决方案：接收器51包括分配器1和调谐器5.分配器1包括金属壳体1a，天线端子2 和输出端子3.输出端子3设置在金属壳体1a的侧面1d上。调谐器5包括设置在金属壳体5a的侧面5c上的输入端子4。侧面5c面对金属壳体1a的侧面1d。调谐器5的输入端子4被配置为直接连接到分配器1的输出端子3，并且设置在侧面5c上以面向分配器1的输出端子3。

3. 发明专利

JP2009100416A Wireless system 审中-公开
标题翻译：无线电系统
公开(公告)号：JP2009100416A
公开(公告)日：2009-05-07
申请号：JP2007272435
申请日：2007-10-19
申请人： Sharp Corp , シャープ株式会社
发明人： SHIMODA MAMORU
IPC分类号： H04L7/00 , H04B1/3822 , H04B1/40 , H04L7/04
摘要： PROBLEM TO BE SOLVED: To provide a radio system wherein a sub station can request a main station to correct a frequency as necessary. SOLUTION: The sub station 2 having a low-accuracy reference oscillator 6 transmits a reference signal for correcting a frequency to the main station 1 on a periodical basis or when ambient temperature is greatly changed. The main station 1 having a high-accuracy reference oscillator 20 creates frequency correcting information to correct a difference between a reference communication frequency and the communication frequency of the sub station 2 in accordance with the reference signal. The main station 1 transmits the frequency correcting information to the sub station 2 with the communication frequency of the sub station 2. The sub station 2 corrects the communication frequency in accordance with the frequency correcting information. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种无线电系统，其中子站可以根据需要请求主站来校正频率。解决方案：具有低精度参考振荡器6的子站2周期性地或者环境温度大大地改变时，将用于校正频率的参考信号发送到主站1。具有高精度基准振荡器20的主站1根据参考信号产生频率校正信息，以校正参考通信频率与子站2的通信频率之间的差异。主站1以子站2的通信频率将频率校正信息发送到子站2.子站2根据频率校正信息来校正通信频率。版权所有（C）2009，JPO＆INPIT

4. 发明专利

JP2005079991A Radio receiving circuit and radio apparatus provided with the same 审中-公开
标题翻译：无线电接收电路和无线电设备提供
公开(公告)号：JP2005079991A
公开(公告)日：2005-03-24
申请号：JP2003308953
申请日：2003-09-01
申请人： Sharp Corp , シャープ株式会社
发明人： SHIMODA MAMORU
IPC分类号： H03G3/30 , H03G3/20 , H04B1/16
摘要： PROBLEM TO BE SOLVED: To provide a radio receiving circuit which satisfies reception sensitivity and a jamming-proof property without using an RF filter and is inexpensive and small, and to provide a radio apparatus provided with the radio receiving circuit.
SOLUTION: This radio receiving circuit 14 in a radio apparatus 1 includes a first RF amplifier circuit 30 having a low noise characteristic and a second RF amplifier circuit 32 having an intermodulation distortion-resistant characteristic. The signal level of a reception signal received by an antenna 10 is detected by an RSSI circuit included in an FSK demodulation circuit 42. When the level of the reception signal is not higher than a prescribed level, selection switches 34 and 36 select the first RF amplifier circuit 30, and when the level of the reception signal is higher than the prescribed level, the selection switches 34 and 36 select the second RF amplifier circuit 32.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：解决的问题：提供一种在不使用RF滤波器的情况下满足接收灵敏度和抗干扰性能并且便宜且小的无线电接收电路，并且提供设置有无线电接收电路的无线电设备。解决方案：无线电设备1中的该无线电接收电路14包括具有低噪声特性的第一RF放大器电路30和具有互调抗失真特性的第二RF放大器电路32。由天线10接收到的接收信号的信号电平由包含在FSK解调电路42中的RSSI电路检测。当接收信号的电平不高于规定电平时，选择开关34和36选择第一RF 放大器电路30，并且当接收信号的电平高于规定电平时，选择开关34和36选择第二RF放大器电路32.版权所有（C）2005，JPO＆NCIPI

5. 发明专利

JP2009017282A Parasitic antenna 审中-公开
标题翻译： PARASITIC天线
公开(公告)号：JP2009017282A
公开(公告)日：2009-01-22
申请号：JP2007177358
申请日：2007-07-05
申请人： Sharp Corp , シャープ株式会社
发明人： SHIMODA MAMORU
IPC分类号： H01Q13/10 , H01Q13/08
摘要： PROBLEM TO BE SOLVED: To provide a parasitic antenna capable of expanding the communication range of a radio device installed in a metal shield body such as a pipe shaft.
SOLUTION: A radio wave transmitted from the radio device 20 is received by an antenna 1 provided as a microstrip antenna nearby the radio device 20 and fed to conductor sheets 2 and 2 through a feeder 3. The conductor sheets 2 and 2 are stuck nearby the length center of a slit 11 of a conductor plate 10 across the slit 11, which then operates as a slot antenna to radiate the radio wave fed from the feeder 3, thereby operating as a parasitic antenna. The parasitic antenna is installed between a master station and a slave station of a meter-reading data gathering system wherein meter-reading data representing use states of lifelines of water supply, gas supply, etc., are gathered from radio slave stations through a radio master station and sent to a center.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种能够扩展安装在诸如管轴的金属屏蔽体中的无线电装置的通信范围的寄生天线。解决方案：从无线电设备20发送的无线电波由在无线电设备20附近作为微带天线提供的天线1接收，并通过馈线3馈送到导体片2和2.导体片2和2是卡在导体板10的狭缝11的长度中心附近，穿过狭缝11，狭缝11然后作为缝隙天线工作，以辐射从馈线3馈送的无线电波，从而作为寄生天线工作。寄生天线安装在仪表读取数据采集系统的主站和从站之间，其中表示供水，供气等的生命线的使用状态的表读数据通过无线电从无线电从站收集主站发送到一个中心。版权所有（C）2009，JPO＆INPIT

6. 发明专利

JP2008148018A Radio communication system and radio equipment 审中-公开
标题翻译：无线电通信系统和无线电设备
公开(公告)号：JP2008148018A
公开(公告)日：2008-06-26
申请号：JP2006333137
申请日：2006-12-11
申请人： Sharp Corp , シャープ株式会社
发明人： SHIMODA MAMORU
IPC分类号： H04B1/16 , H04B1/3822 , H04B1/40 , H04B7/26 , H04W72/08 , H04W88/02 , H04W92/18
摘要： PROBLEM TO BE SOLVED: To provide radio equipment and a radio communication system capable of automatically adjusting a threshold for judging whether or not a received signal is a signal which should be received to an appropriate value. SOLUTION: In the radio communication system, a radio modulation signal transmitted from first radio equipment 100 is received by second radio equipment 110. The second radio equipment 110 generates a threshold signal for the first radio equipment 100 based on voltage generated according to intensity of the received signal by a circuit 110A. The radio modulation signal including the generated threshold signal is transmitted to the first radio equipment 100 by a transmitting circuit 110B, the radio modulation signal is received, converted into a demodulation signal by a receiving circuit 100A, the threshold signal is decoded, stored and held among the demodulation signals in the first radio equipment 100. The first radio equipment 100 judges the received signal whether or not the received radio modulation signal is the one which should be received based on the threshold signal. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供能够自动调整阈值的无线电设备和无线电通信系统，用于判断接收到的信号是否应当是接收到的信号到适当的值。解决方案：在无线电通信系统中，从第一无线电设备100发送的无线电调制信号由第二无线电设备110接收。第二无线电设备110基于根据第一无线电设备110产生的电压为第一无线电设备100生成阈值信号通过电路110A的接收信号的强度。包括产生的阈值信号的无线电调制信号由发送电路110B发送给第一无线电设备100，无线电调制信号被接收电路100A转换成解调信号，阈值信号被解码，存储和保持在第一无线电设备100中的解调信号之中。第一无线电设备100基于阈值信号来判断所接收的无线电调制信号是否应当被接收。版权所有（C）2008，JPO＆INPIT

7. 发明专利

JP2008028666A Wireless communication device 审中-公开
标题翻译：无线通信设备
公开(公告)号：JP2008028666A
公开(公告)日：2008-02-07
申请号：JP2006198494
申请日：2006-07-20
申请人： Sharp Corp , シャープ株式会社
发明人： SHIMODA MAMORU
IPC分类号： H04B1/10 , H04B1/16 , H04B1/26 , H04L27/14
摘要： PROBLEM TO BE SOLVED: To provide a wireless communication device which is capable of avoiding incorrect carrier sensing caused by disturbance signals and easily distinguishing disturbance signals or noises from the desired signals. SOLUTION: The wireless communication device is equipped with an amplifier 1, a local oscillator 3, a mixer 2, a band limiting filter 4, a demodulation circuit 5, an output terminal 6 which outputs signals according to the level of signals inputted into the demodulation circuit 5, a comparator 7 which judges whether the signals outputted from the output terminal 6 are above a prescribed threshold value or not, a first delay circuit 8 which delays intermediate frequency signals outputted from the band limiting filter 4 by a prescribed time, a first phase comparator 9 which compares the phase of the intermediate frequency signals outputted from the band limiting filter 4 with that of the signals outputted from the first delay circuit 8, a control circuit 10 which outputs control signals according to the output signals outputted from the first phase comparator 9, and a carrier judging circuit 11 which performs a carrier judgement on the basis of the output signals of the comparator 7 and control circuit 10. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种无线通信设备，其能够避免由干扰信号引起的不正确的载波检测，并且容易地将干扰信号或噪声与期望的信号区分开。解决方案：无线通信设备配备有放大器1，本地振荡器3，混合器2，限幅滤波器4，解调电路5，输出端子6，输出信号根据输入的信号电平在解调电路5中，判定从输出端子6输出的信号是否高于规定阈值的比较器7，将从频带限制滤波器4输出的中频信号延迟指定时间的第一延迟电路8 比较从带限滤波器4输出的中频信号的相位与从第一延迟电路8输出的信号的相位相对应的第一相位比较器9，控制电路10根据从第一延迟电路8输出的输出信号输出控制信号第一相位比较器9以及基于比较器7a的输出信号进行载波判定的载波判断电路11 d控制电路10.版权所有（C）2008，JPO＆INPIT

8. 发明专利

JP2006141085A Power supply circuit 审中-公开
标题翻译：电源电路
公开(公告)号：JP2006141085A
公开(公告)日：2006-06-01
申请号：JP2004326287
申请日：2004-11-10
申请人： Sharp Corp , シャープ株式会社
发明人： SHIMODA MAMORU
IPC分类号： H02M3/155
摘要： PROBLEM TO BE SOLVED: To provide a power supply circuit in which noise being generated through mixing of a signal and an undesired signal at the time of switching operation in the power supply circuit can be reduced.
SOLUTION: The power supply circuit, i.e. a DC-DC converter 100, comprising a conversion circuit including at least a switch 3 and converting the power supply voltage through switching operation, and a circuit 7 for controlling the switching operation is further provided with a 180° phase shifter 8 arranged such that a composite signal of an undesired signal and its 180° phase shifted signal is inputted to the switch 3 and the undesired signal is phase shifted to produce the phase shifted signal, and a compounder 9 for compounding the undesired signal and the phase shifted signal to produce the composite signal.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：解决的问题：提供一种电源电路，其中可以减少在电源电路中的开关操作时通过混合信号和不期望信号而产生的噪声。
解决方案：电源电路，即DC-DC转换器100，其包括至少包括开关3并通过开关操作转换电源电压的转换电路，以及用于控制开关操作的电路7 具有180°移相器8，其布置成使得不期望信号的复合信号及其180°相移信号被输入到开关3，并且不需要的信号被相移以产生相移信号，并且复合器9用于复合不需要的信号和相移信号以产生复合信号。版权所有（C）2006，JPO＆NCIPI

9. 发明专利

JP2005347817A Pll circuit 审中-公开
标题翻译： PLL电路
公开(公告)号：JP2005347817A
公开(公告)日：2005-12-15
申请号：JP2004161748
申请日：2004-05-31
申请人： Sharp Corp , シャープ株式会社
发明人： SHIMODA MAMORU
IPC分类号： H03L7/093 , H03L7/18
摘要： PROBLEM TO BE SOLVED: To provide a PLL circuit wherein a charge pump receives a noise comprising a high frequency component and converts the noise into a noise with a frequency component lower than a cut-off frequency of a loop filter so that it is prevented that the loop filter cannot eliminate the noise, resulting in causing a phase noise to an FSK modulation signal. SOLUTION: The PLL circuit includes: a phase comparator 13 for detecting a phase difference between a reference frequency signal fr and a comparison frequency signal fp and providing an output of a phase comparison signal PD; a low pass filter 31 for eliminating the noise comprising a high frequency component included in the phase comparison signal PD; the charge pump 14 for increasing / decreasing a control current IC in response to the phase comparison signal PD to provide an output; the loop filter 15 for eliminating the high frequency component of the control current IC, converting the control current IC into a control voltage VC and providing an output; and a voltage-controlled oscillator 1 for increasing / decreasing the comparison frequency signal fp in response to the control voltage VC and providing an output. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：为了提供PLL电路，其中电荷泵接收包括高频分量的噪声，并将噪声转换成具有低于环路滤波器的截止频率的频率分量的噪声，使得其防止环路滤波器不能消除噪声，导致对FSK调制信号造成相位噪声。解决方案：PLL电路包括：相位比较器13，用于检测参考频率信号fr和比较频率信号fp之间的相位差，并提供相位比较信号PD的输出; 用于消除包括在相位比较信号PD中的高频分量的噪声的低通滤波器31; 用于响应于相位比较信号PD增加/减少控制电流IC以提供输出的电荷泵14; 用于消除控制电流IC的高频分量的环路滤波器15，将控制电流IC转换成控制电压VC并提供输出; 以及用于响应于控制电压VC增加/减小比较频率信号fp并提供输出的压控振荡器1。版权所有（C）2006，JPO＆NCIPI

10. 发明专利

JP2012253526A Filter circuit 审中-公开
标题翻译：滤波电路
公开(公告)号：JP2012253526A
公开(公告)日：2012-12-20
申请号：JP2011123888
申请日：2011-06-02
申请人： Sharp Corp , シャープ株式会社
发明人： SHIMODA MAMORU
IPC分类号： H04B1/18
摘要： PROBLEM TO BE SOLVED: To provide a filter circuit that can appropriately control a frequency characteristic to adjust a signal level even if there are a plurality of signals in different frequency bands and the signals have a level difference.SOLUTION: The filter circuit includes: a filter section having a variable cutoff frequency and attenuation to an input signal; and a control section for setting the cutoff frequency and attenuation of the filter section. The control section includes: a first signal level detector for detecting a signal level of a first frequency band of the input signal; a second signal level detector for detecting a signal level of a second frequency band of the input signal different from the first frequency band; a signal level comparator for comparing outputs of the first signal level detector and second signal level detector; and a controller for setting the cutoff frequency and attenuation of the filter section on the basis of an output from the signal level comparator.
摘要翻译：要解决的问题：提供一种即使在不同频带中存在多个信号且信号具有电平差的情况下也可以适当地控制频率特性以调整信号电平的滤波电路。滤波电路包括：具有对输入信号的可变截止频率和衰减的滤波器部分; 以及用于设定过滤器部分的截止频率和衰减的控制部分。控制部分包括：用于检测输入信号的第一频带的信号电平的第一信号电平检测器; 第二信号电平检测器，用于检测与第一频带不同的输入信号的第二频带的信号电平; 信号电平比较器，用于比较第一信号电平检测器和第二信号电平检测器的输出; 以及控制器，用于根据来自信号电平比较器的输出来设置滤波器部分的截止频率和衰减。版权所有（C）2013，JPO＆INPIT

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式