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1. 发明授权

US06516038B1 Receiving circuit 失效
标题翻译：接收电路
公开(公告)号：US06516038B1
公开(公告)日：2003-02-04
申请号：US09258419
申请日：1999-02-26
申请人： Gen-ichiro Ohta , Kazunori Inogai , Fujio Sasaki
发明人： Gen-ichiro Ohta , Kazunori Inogai , Fujio Sasaki
IPC分类号： H03D318
CPC分类号： H04B1/0032 , H03D1/2245 , H03D7/165 , H03D2200/0047 , H03D2200/005 , H03D2200/0082 , H03F3/45475 , H03F3/50 , H03F2200/537 , H04B1/0003 , H04B1/123 , H04B1/26 , H04B5/0093 , Y02D70/40 , Y02D70/42
摘要： A receiving circuit mainly available in a digital modulation type communication system having a plurality of channels, which is capable of reducing power in a receiving system, simplifying the circuit and reducing the power consumption. Upside and downside frequencies corresponding to a central value between channels are separately supplied from a local frequency signal generating circuit 4 to first and second frequency converting circuits 2, 3 so that two output signals are developed with respect to one of a desired wave, upside channel and downside channel. The desired wave present in common in the first and second frequency converting circuits 2, 3 is extracted in a common wave extracting circuit 5, and a frequency offset of &ohgr;o existing in the output of the common wave extracting circuit 5 is removed a frequency offset circuit 6 and further an unnecessary frequency component is filtered by a filter 8. In addition, the common wave extracting circuit 5 has transformers and, using its inductances, raises the difference between the common wave and the non-common wave within the circuit to more than two times that of a prior art.
摘要翻译：主要可用于具有多个信道的数字调制型通信系统中的接收电路，其能够降低接收系统的功率，简化电路并降低功耗。对应于通道之间的中心值的上升和下降频率从本地频率信号发生电路4分别提供给第一和第二频率转换电路2,3，使得两个输出信号相对于所需波形，上行通道和下行通道。在公共波提取电路5中提取在第一和第二频率转换电路2,3中共同存在的期望的波，并且公共波提取电路5的输出中存在的ωω的频率偏移被去除频率偏移电路此外，公共波提取电路5还具有变压器，并且使用其电感将电路内的公共波和非公共波之间的差异提高到超过是现有技术的两倍。

2. 发明授权

US6104764A Radio receiving apparatus for receiving communication signals of different bandwidths 失效
公开(公告)号：US6104764A
公开(公告)日：2000-08-15
申请号：US456449
申请日：1999-12-08
申请人： Gen-ichiro Ohta , Kazunori Inogai , Hiroaki Sudo , Fujio Sasaki
发明人： Gen-ichiro Ohta , Kazunori Inogai , Hiroaki Sudo , Fujio Sasaki
IPC分类号： H04B1/16 , H03D3/00 , H04B1/26 , H04B1/30 , H03D1/22
CPC分类号： H04B1/26 , H03D3/009 , H04B1/0014 , H04B1/0039 , H04B1/30 , H03D3/006 , H03D3/007
摘要： A received signal obtained from an antenna is subjected to high-frequency amplification. The amplified signal is supplied to a first bandpass filter, which extracts only signals of all the channels of a communications system concerned while filtering out other radio signals. The extracted signals are frequency-converted by using a local oscillation frequency, and only a desired wave is passed by a second bandpass filter. The desired wave is supplied to a sample-and-hold circuit, which performs sampling according to the bandwidth-limiting sampling theorem. A resulting discrete signal is supplied to an I-axis-component and Q-axis-component separating circuits, where the polarity of sample values is inverted for every other clock pulse with respect to each of the I and Q axes to thereby effect Hilbert transform. Resulting two orthogonal components on a phase plane are supplied to a complex coefficient filter.

3. 发明授权

US6094564A Mobile communication apparatus operable in different formats and pairing I-F band pass filter type with I-F amplifier characteristics 失效
标题翻译：可以以不同格式工作的移动通信装置，并配置具有I-F放大器特性的I-F带通滤波器类型
公开(公告)号：US6094564A
公开(公告)日：2000-07-25
申请号：US797862
申请日：1997-02-10
申请人： Wataru Tomiya , Seiichi Yamaguchi , Fujio Sasaki , Hiroaki Kosugi
发明人： Wataru Tomiya , Seiichi Yamaguchi , Fujio Sasaki , Hiroaki Kosugi
IPC分类号： H03J5/24 , H04B1/26 , H04B1/40 , H04Q7/38 , H04B1/38 , H04B1/06
CPC分类号： H04B1/006 , H03J5/24 , H04B1/005 , H04B1/26 , H04B1/406
摘要： A radio communication apparatus is designed for a plurality of different radio communication formats, one of which can be selected. The radio communication apparatus includes a fixed-gain IF amplifier and a variable-gain IF amplifier. One is selected out of the fixed-gain IF amplifier and the variable-gain IF amplifier as an effectively used IF amplifier in response to which of the radio communication formats is selected. The fixed-gain IF amplifier is selected as an effectively used IF amplifier when a narrow-band radio communication format is selected. The variable-gain IF amplifier is selected as an effectively used IF amplifier when a wide-band radio communication format is selected.
摘要翻译：无线电通信装置被设计用于多种不同的无线电通信格式，其中之一可以被选择。无线电通信装置包括固定增益IF放大器和可变增益IF放大器。选择固定增益IF放大器和可变增益IF放大器中的一个作为有效使用的IF放大器，以响应于哪个无线电通信格式被选择。当选择窄带无线电通信格式时，固定增益IF放大器被选为有效使用的IF放大器。当选择宽带无线电通信格式时，可变增益IF放大器被选为有效使用的IF放大器。

4. 发明授权

US6044254A Receiving circuit 失效
标题翻译：空间分集射频接收电路
公开(公告)号：US6044254A
公开(公告)日：2000-03-28
申请号：US999068
申请日：1997-12-29
申请人： Gen-ichiro Ohta , Kazunori Inogai , Fujio Sasaki , Hiroaki Sudo
发明人： Gen-ichiro Ohta , Kazunori Inogai , Fujio Sasaki , Hiroaki Sudo
IPC分类号： H04B1/12 , H04B1/16 , H04B7/08
CPC分类号： H04B7/0894 , H04B1/126 , H04B7/0885 , H04B7/0888
摘要： A receiving circuit includes a first antenna 1, a second antenna 2, units 10 and 11 for generating a sum signal or a difference signal from signals of two paths received by the respective antennas, a unit 12 for giving delay to either an output of the sum signal generating unit or an output of the difference signal generating unit, a unit 13 for summationally combining an output of the delay unit and the signal of the not-delayed path, a desired-wave pass filter unit 14 for receiving an output of the summationally combining unit, a dividing unit 15 for receiving an output of the desired-wave pass filter unit, an orthogonal detection unit 16-19 for receiving an output of the dividing unit, and a filter unit 20 and 21 for receiving an output of the orthogonal detection unit to extract a base band signal therefrom, wherein the receiving path including the summationally combining unit and the following are made into one path to thereby attain miniaturization and low power consumption.
摘要翻译：接收电路包括：第一天线1，第二天线2，用于从由各个天线接收的两个路径的信号产生和信号或差分信号的单元10和11;用于给和信号生成单元或差分信号生成单元的输出，用于将延迟单元的输出和未延迟路径的信号进行合计组合的单元13，用于接收延迟单元的输出的期望波通滤波器单元14，合成组合单元，用于接收期望波通滤波器单元的输出的分割单元15，用于接收分割单元的输出的正交检测单元16-19和用于接收分频单元的输出的滤波单元20和21 正交检测单元从其中提取基带信号，其中包括合成组合单元和以下的接收路径被制成一个路径，从而实现小型化和低功耗。

5. 发明授权

US5835853A Two band receiver 失效
标题翻译：双频段接收机
公开(公告)号：US5835853A
公开(公告)日：1998-11-10
申请号：US769749
申请日：1996-12-20
申请人： Takashi Enoki , Fujio Sasaki
发明人： Takashi Enoki , Fujio Sasaki
IPC分类号： H03D7/16 , H04B1/18 , H04B1/26 , H04B7/08
CPC分类号： H04B1/006 , H03D7/161 , H04B1/005 , H04B1/26 , H04B7/0802
摘要： A receiver comprises; an input TERM (11) for receiving a radio wave signal including at least one of 1st and 2nd radio wave components from an antenna; a 1st SW (12); a 1st BPF (13) for extracting the 1st radio wave component; a 2nd BPF (14) for extracting the 2nd radio wave component; a 2nd SW (17), the 1st and 2nd SW to selectively forming 1st and 2nd SIG passages through the 1st BPF in a 1st mode and the 2nd BPF in a 2nd mode respectively; a 1st LO (19) for generating 1st and 2nd LO SIGs (30a, 30b) in the 1st and 2nd modes respectively; a 1st mixer (18) for mixing an output of the 2nd SW with the 1st and 2nd LO SIGs in the 1st and 2nd modes respectively; a 1st FLT (21) for filtering an output of the 1st mixer to output 1st and 2nd IF SIGs having the same FRQ; a 2nd LO (22), 2nd mixer (23), a 2nd FLT (25) for generating 3rd and 4th IF SIGs corresponding to the 1st and 2nd radio wave components from an output of the 1st FLT in the 1st and 2nd modes, respectively. A receiver includes two sets of the receivers except 1st and 2nd LOs commonly used, which provides a diversity receiving. The receiver may further comprise a SW and another input coupled to another antenna. This SW provides another diversity receiving. A modified receiver provides a diversity receiving after an antenna and after detection.
摘要翻译：接收机包括：输入TERM（11），用于从天线接收包括第一和第二无线电波分量中的至少一个的无线电波信号; 第一SW（12）; 用于提取第一无线电波分量的第一BPF（13）; 用于提取第二无线电波分量的第二BPF（14）; 第二SW（17），第一和第二SW，分别以第一模式选择性地形成通过第一BPF的第一和第二SIG通道和第二模式的第二BPF; 第一LO（19），用于分别在第一和第二模式中产生第一和第二LO SIG（30a，30b）; 第一混频器（18），用于分别在第一和第二模式下混合第二SW的输出与第一和第二LO SIG; 第一FLT（21），用于对第一混频器的输出进行滤波，以输出具有相同FRQ的第一和第二IF SIG; 第二LO（22），第二混频器（23），第二FLT（25），用于分别从第一和第二模式中的第一FLT的输出产生与第一和第二无线电波分量对应的第三和第四IF SIG 。接收机包括通常使用的第一和第二LO的两组接收机，其提供分集接收。接收机还可以包括SW和耦合到另一个天线的另一个输入。该SW提供另一种分集接收。经修改的接收机在天线和检测后提供分集接收。

6. 发明授权

US06584305B1 Direct conversion radio receiving system using digital signal processing for channel filtering and down conversion to base band 失效
标题翻译：直接转换无线电接收系统采用数字信号处理进行信道滤波和下变频到基带
公开(公告)号：US06584305B1
公开(公告)日：2003-06-24
申请号：US09075884
申请日：1998-05-11
申请人： Gen-ichiro Ohta , Kazunori Inogai , Hiroaki Sudo , Fujio Sasaki
发明人： Gen-ichiro Ohta , Kazunori Inogai , Hiroaki Sudo , Fujio Sasaki
IPC分类号： H04B110
CPC分类号： H03D7/166 , H03D3/007 , H03H17/02 , H04B1/00 , H04B1/28 , H04L5/06
摘要： A radio receiving system includes an orthogonally-modulated waveform detection/channel filter section 4, an I signal root Nyquist filter 20, a Q signal root Nyquist filter 21, and a signal detection/demodulation section 25. The orthogonally-modulated waveform detection/channel filter section 4 further includes a first filter (a band pass filter) 2 which permits passage of only a signal at a frequency band assigned to a communications system from which the radio receiving system receives a signal; a sample-and-hold circuit 5; a Hilbert transformer 6; a first channel filter 7 through N-th channel filter 9; and a clock signal shaping/controlling section 15. The band pass filter 2 is provided with the characteristics which cancel the aperture effect due to a sampling operation, thus compensating for the aperture effect due to a sampling operation.
摘要翻译：无线接收系统包括正交调制波形检测/信道滤波器部分4，I信号根奈奎斯特滤波器20，Q信号根奈奎斯特滤波器21和信号检测/解调部分25.正交调制波形检测/信道滤波器部分4还包括允许仅分配给无线电接收系统从其接收信号的通信系统的频带通过信号的第一滤波器（带通滤波器）2; 采样保持电路5; 希尔伯特变压器6; 第一通道滤波器7至N通道滤波器9; 和时钟信号整形/控制部分15.带通滤波器2具有由于采样操作而消除孔径效应的特性，从而补偿由采样操作引起的孔径效应。

7. 发明授权

US5966666A Multiple-band mobile transceiver having a smaller number of local oscillators 失效
标题翻译：具有较少数量的本地振荡器的多频带移动收发机
公开(公告)号：US5966666A
公开(公告)日：1999-10-12
申请号：US796906
申请日：1997-02-06
申请人： Seiichi Yamaguchi , Fujio Sasaki , Hiroaki Kosugi
发明人： Seiichi Yamaguchi , Fujio Sasaki , Hiroaki Kosugi
IPC分类号： H03D7/16 , H04B1/04 , H04B1/26 , H04B1/40 , H04Q7/38 , H04B1/38
CPC分类号： H04B1/406 , H03D7/163 , H04B1/403
摘要： A frequency synthesizer consists of a voltage-controlled oscillator and a frequency division and distribution section. The frequency division and distribution section, which splits an oscillation signal of the voltage-controlled oscillator into a transmission modulation local oscillation signal and a reception second local oscillation signal while frequency-dividing the oscillation signal of the voltage-controlled oscillator, includes two pairs of frequency dividers and two switches. The frequency division numbers of the two pairs of frequency dividers are so set as to accommodate all the combinations of mobile communications systems and the transmission modulation local oscillation signal/reception second local oscillation signal. The two switches are switched in accordance with a mobile communications system for which a mobile transceiver is operating. The two local oscillation signals are input to a quadrature modulator and a quadrature demodulator, respectively.
摘要翻译：频率合成器由压控振荡器和分频和分配部分组成。在对压控振荡器的振荡信号进行分频的同时将压控振荡器的振荡信号分割为发送调制本机振荡信号和接收第二本机振荡信号的分频分配部包括两对分频器和两个开关。两对分频器的分频数字被设置为适应移动通信系统的所有组合和发送调制本地振荡信号/接收第二本地振荡信号。两个开关根据移动收发器正在操作的移动通信系统进行切换。两个本地振荡信号分别输入到正交调制器和正交解调器。

8. 发明授权

US5852784A Multiband mobile unit communication apparatus 失效
标题翻译：多频带移动单元通信装置
公开(公告)号：US5852784A
公开(公告)日：1998-12-22
申请号：US813117
申请日：1997-03-07
申请人： Fumio Ito , Seiichi Yamaguchi , Fujio Sasaki , Hiroaki Kosugi
发明人： Fumio Ito , Seiichi Yamaguchi , Fujio Sasaki , Hiroaki Kosugi
IPC分类号： H03D7/16 , H03J5/24 , H04B1/26 , H04B1/30 , H04B1/40 , H04Q7/38
CPC分类号： H04B1/0057 , H03D7/161 , H03D7/165 , H03J5/244 , H04B1/005 , H04B1/006 , H04B1/26 , H04B1/30 , H04B1/406
摘要： A multiband mobile unit communication apparatus is disclosed which comprises: an antenna for receiving 1st and 2nd bands of radio wave SIGs including quadrature modulation SIGs; a 1st LO CKT for generating a 1st LO SIG; 1st and 2nd receiving CKTs for generating 1st and 2nd IF SIGs from the 1st and 2nd bands of radio wave SIGs using the 1st LO SIG respectively; a switching CKT responsive to a switching control SIG indicative of 1st and 2nd modes for outputting the 1st IF SIG in the 1st mode and outputting the 2nd IF SIG in the 2nd mode; a 2nd LO CKT for generating 2nd and 3rd LO SIGs in the 1st and 2nd modes respectively; and a quadrature demodulation CKT for demodulating and outputting quadrature SIGs from an output from the switching CKT using the 2nd and third LO SIGs in the 1st and 2nd modes respectively. The 2nd LO CKT comprises: a local oscillator for generating a 4th LO SIG, a FRQ divider for dividing the 4th LO SIG with a given divisor and generating the 2nd LO SIG; and a switch for outputting the 2nd LO SIG in the 1st mode and outputting the 4th LO SIG as the 3rd LO SIG in the 2nd mode in response to the switching control SIG. The given divisor corresponds to a ratio between center FRQs of the 1st and 2nd IF SIGs. The 2nd LO CKT may change the LO FRQ by switchably connecting resonating elements to an oscillator.
摘要翻译：公开了一种多频带移动单元通信装置，其包括：用于接收包括正交调制SIG的无线电波SIG的第一和第二频带的天线; 用于产生第一LO SIG的第一LO CKT; 第一和第二接收CKT，用于分别使用第一LO SIG从无线电波SIG的第一和第二频带产生第一和第二IF SIG; 切换CKT，响应于指示用于在第一模式中输出第一IF SIG的第一和第二模式的切换控制SIG，并将第二IF SIG输出到第二模式; 分别在第1和第2模式中产生第2和第3 LO信号的第二LO CKT; 以及正交解调CKT，用于分别使用第一和第二模式中的第二和第三LO SIG从来自开关CKT的输出解调和输出正交SIG。第二LO CKT包括：用于产生第四LO SIG的本地振荡器，用于将第四LO SIG与给定除数分开并生成第二LO SIG的FRQ分频器; 以及用于在第一模式下输出第二LO SIG并且响应于切换控制SIG将第四LO SIG作为第三LO SIG输出到第二模式的开关。给定的除数对应于第一和第二IF SIG的中心FRQ之间的比率。第二LO CKT可以通过将谐振元件可切换地连接到振荡器来改变LO FRQ。

9. 发明授权

US4783207A Air cleaner 失效
标题翻译：空气净化器
公开(公告)号：US4783207A
公开(公告)日：1988-11-08
申请号：US105337
申请日：1987-10-06
申请人： Akira Nagashima , Fujio Sasaki
发明人： Akira Nagashima , Fujio Sasaki
IPC分类号： B01D45/06 , B01D46/42 , B01D50/00 , B27B17/00 , F02B63/02 , F02B75/02 , F02M35/022 , F02M35/024 , F02M35/08 , F02M35/14 , B01D46/10
CPC分类号： B27B17/00 , F02B63/02 , F02M35/022 , F02B2075/025
摘要： An air cleaner comprising a bowl-shaped air cleaner main body whose upper end is opened upwardly and formed with air intake ports at a portion of a peripheral wall, a cap member for covering the opening of the air cleaner main body, a cylindrical cleaner element in the air cleaner main body, and a bowl-shaped dividing member for dividing a space within the cleaner element into an upper space and a lower space, in which the upper space communicates with the air intake ports while it is connected to an annular chamber defined between the air cleaner main body and the cleaner element.
摘要翻译：一种空气滤清器，包括：碗形空气滤清器主体，其上端向上敞开，并在周壁的一部分形成有进气口，用于覆盖空气滤清器主体的开口的盖构件，圆筒形清洁器元件在空气滤清器主体中，以及碗形分隔部件，用于将清洁器元件内的空间分成上部空间和下部空间，上部空间与下部空间连通，上部空间和下部空间与空气吸入口连通，同时连接到环形室限定在空气滤清器主体和清洁器元件之间。

10. 发明授权

US06236688B1 Receiving circuit 有权
标题翻译：接收电路
公开(公告)号：US06236688B1
公开(公告)日：2001-05-22
申请号：US09258402
申请日：1999-02-26
申请人： Gen-ichiro Ohta , Kazunori Inogai , Fujio Sasaki
发明人： Gen-ichiro Ohta , Kazunori Inogai , Fujio Sasaki
IPC分类号： H03D318
CPC分类号： H04B1/0032 , H03D1/2245 , H03D7/165 , H03D2200/0047 , H03D2200/005 , H03D2200/0082 , H03F3/45475 , H03F3/50 , H03F2200/537 , H04B1/0003 , H04B1/123 , H04B1/26 , H04B5/0093 , Y02D70/40 , Y02D70/42
摘要： A receiving circuit mainly available in a digital modulation type communication system having a plurality of channels, which is capable of reducing power in a receiving system, simplifying the circuit and reducing the power consumption. Upside and downside frequencies corresponding to a central value between channels are separately supplied from a local frequency signal generating circuit 4 to first and second frequency converting circuits 2, 3 so that two output signals are developed with respect to one of a desired wave, upside channel and downside channel. The desired wave present in common in the first and second frequency converting circuits 2, 3 is extracted in a common wave extracting circuit 5, and a frequency offset of &ohgr;o existing in the output of the common wave extracting circuit 5 is removed a frequency offset circuit 6 and further an unnecessary frequency component is filtered by a filter 8. In addition, the common wave extracting circuit 5 has transformers and, using its inductances, raises the difference between the common wave and the non-common wave within the circuit to more than two times that of a prior art.
摘要翻译：主要可用于具有多个信道的数字调制型通信系统中的接收电路，其能够降低接收系统的功率，简化电路并降低功耗。对应于通道之间的中心值的上升和下降频率从本地频率信号发生电路4分别提供给第一和第二频率转换电路2,3，使得两个输出信号相对于所需波形，上行通道和下行通道。在公共波提取电路5中提取在第一和第二频率转换电路2,3中共同存在的期望的波，并且公共波提取电路5的输出中存在的ωω的频率偏移被去除频率偏移电路此外，公共波提取电路5还具有变压器，并且使用其电感将电路内的公共波和非公共波之间的差异提高到超过是现有技术的两倍。

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