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1. 发明授权

US06449471B1 Wireless terminal device 失效
标题翻译：无线终端设备
公开(公告)号：US06449471B1
公开(公告)日：2002-09-10
申请号：US09707942
申请日：2000-11-08
申请人： Takatoshi Katsura , Kenji Itoh , Shinjirou Fukuyama , Mitsuru Mochizuki , Hiroaki Nagano , Yoshinori Matsunami , Mitsuhiro Shimozawa , Fumio Ishizu , Ryoji Hayashi
发明人： Takatoshi Katsura , Kenji Itoh , Shinjirou Fukuyama , Mitsuru Mochizuki , Hiroaki Nagano , Yoshinori Matsunami , Mitsuhiro Shimozawa , Fumio Ishizu , Ryoji Hayashi
IPC分类号： H03D300
CPC分类号： H04B1/0014 , H03D3/008 , H03D7/02 , H04B1/0032 , H04B1/0039 , H04B1/30 , H04L25/061
摘要： In a cellular telephone having a receiving circuit of a direct conversion type using an even harmonic orthogonal mixer, high-pass filters for removing a DC offset component are arranged before and after a variable gain amplifier in a base band circuit. The DC offset component occurred in the even harmonic orthogonal mixer is always constant, and the DC offset component occurred in the variable gain amplifier frequently varies so that a cutoff frequency of the front high-pass filter is set to be lower than a cutoff frequency of the rear high-pass filter, and the frequencies are set to achieve a fast transition response.
摘要翻译：在具有使用偶次谐波正交混频器的直接变换型接收电路的蜂窝电话机中，在基带电路中的可变增益放大器之前和之后配置用于去除DC偏移分量的高通滤波器。在偶次谐波正交混频器中发生的DC偏移分量总是恒定的，并且在可变增益放大器中发生的DC偏移分量经常变化，使得前部高通滤波器的截止频率设置为低于截止频率后置高通滤波器，并设置频率以实现快速的转换响应。

2. 发明授权

US07054610B1 Wireless terminal device 失效
标题翻译：无线终端设备
公开(公告)号：US07054610B1
公开(公告)日：2006-05-30
申请号：US09694675
申请日：2000-10-24
申请人： Kenji Itoh , Hiroaki Nagano , Takatoshi Katsura , Shinjirou Fukuyama , Mitsuru Mochizuki , Yoshinori Matsunami , Mitsuhiro Shimozawa , Fumio Ishizu , Ryoji Hayashi
发明人： Kenji Itoh , Hiroaki Nagano , Takatoshi Katsura , Shinjirou Fukuyama , Mitsuru Mochizuki , Yoshinori Matsunami , Mitsuhiro Shimozawa , Fumio Ishizu , Ryoji Hayashi
IPC分类号： H04B1/30
CPC分类号： H03D7/1408 , H04B1/30
摘要： In a cellular telephone provided with a receiving circuit of a direct conversion type, a passive low-pass filter is arranged between a mixer for an I-channel and a base band circuit for removing interference waves of or above a channel next to a channel neighboring to the I-channel, and another passive low-pass filter is arranged between a mixer for a Q-channel and the base band circuit for removing interference waves of or above a channel next to a channel neighboring to the Q-channel. Since the low-pass filters for removing the interference waves of or above the channel next to the neighboring channel are of a differential type, the circuit scale can be small, and the power consumption is small. Since the interference waves are removed by the passive low-pass filters and the active low-pass filters, only the desired channel can be reliably received.
摘要翻译：在设置有直接转换型接收电路的蜂窝电话中，无源低通滤波器被布置在用于I信道的混频器和用于去除邻近信道旁边的信道上的干扰波的基带电路之间并且另一个无源低通滤波器被布置在用于Q信道的混频器和用于去除邻近于Q信道的信道旁边的信道上的干扰波的基带电路之间。由于用于除去邻近通道旁边的通道或其上方的干扰波的低通滤波器是差分型，所以电路规模可以小，功耗小。由于无源低通滤波器和有源低通滤波器去除了干扰波，所以只能可靠地接收期望的信道。

3. 发明授权

US06373907B1 Wireless terminal device 失效
标题翻译：无线终端设备
公开(公告)号：US06373907B1
公开(公告)日：2002-04-16
申请号：US09695405
申请日：2000-10-25
申请人： Takatoshi Katsura , Kenji Itoh , Shinjirou Fukuyama , Mitsuru Mochizuki , Hiroaki Nagano , Yoshinori Matsunami , Fumio Ishizu , Ryoji Hayashi
发明人： Takatoshi Katsura , Kenji Itoh , Shinjirou Fukuyama , Mitsuru Mochizuki , Hiroaki Nagano , Yoshinori Matsunami , Fumio Ishizu , Ryoji Hayashi
IPC分类号： H04L2708
CPC分类号： H03G3/3068 , H03G3/001
摘要： At the onset of an operation, a level of a base band signal at an input side of a variable gain amplifying circuit is detected by a logarithmic amplifier having a wide dynamic range, and, a control unit controls a gain of a low-noise amplifier in a previous step of a low-pass filter based on the detected level and also controls a gain of variable gain amplifier, whereby saturation at an analog base band portion is prevented even when the level of the input signal is high.
摘要翻译：在操作开始时，可变增益放大电路的输入侧的基带信号的电平由具有宽动态范围的对数放大器检测，并且控制单元控制低噪声放大器的增益在基于检测电平的低通滤波器的前一步骤中，并且还控制可变增益放大器的增益，由此即使当输入信号的电平较高时，也可以防止模拟基带部分处的饱和。

4. 发明授权

US06980610B2 Wireless terminal device 失效
标题翻译：无线终端设备
公开(公告)号：US06980610B2
公开(公告)日：2005-12-27
申请号：US10463324
申请日：2003-06-18
申请人： Takatoshi Katsura , Kenji Itoh , Shinjirou Fukuyama , Mitsuru Mochizuki , Hiroaki Nagano , Yoshinori Matsunami , Fumio Ishizu , Ryoji Hayashi
发明人： Takatoshi Katsura , Kenji Itoh , Shinjirou Fukuyama , Mitsuru Mochizuki , Hiroaki Nagano , Yoshinori Matsunami , Fumio Ishizu , Ryoji Hayashi
IPC分类号： H03G3/00 , H04L27/08
CPC分类号： H03G3/001
摘要： A level of a base band signal at an input side of a variable gain amplification circuit is detected by a logarithmic amplifier having a wide input voltage range at a start of an operation, a control unit then performs a coarse feedforward control on a gain of the variable gain amplifier based on the detected level and finds a level of an output of an A/D converter by a mean square deriving circuit and inputs the resulting signal to the control unit. Then the control unit performs a fine feedback control on the variable gain amplifier based on the detected level.
摘要翻译：在可变增益放大电路的输入侧的基带信号的电平由操作开始时具有宽的输入电压范围的对数放大器检测，然后控制单元对该增益进行粗略的前馈控制基于检测电平的可变增益放大器，并通过均方推导电路找到A / D转换器的输出电平，并将所得到的信号输入到控制单元。然后，控制单元基于检测到的电平对可变增益放大器执行精细反馈控制。

5. 发明授权

US06683925B1 Wireless terminal device 失效
标题翻译：无线终端设备
公开(公告)号：US06683925B1
公开(公告)日：2004-01-27
申请号：US09694678
申请日：2000-10-24
申请人： Takatoshi Katsura , Kenji Itoh , Shinjirou Fukuyama , Mitsuru Mochizuki , Hiroaki Nagano , Yoshinori Matsunami , Fumio Ishizu , Ryoji Hayashi
发明人： Takatoshi Katsura , Kenji Itoh , Shinjirou Fukuyama , Mitsuru Mochizuki , Hiroaki Nagano , Yoshinori Matsunami , Fumio Ishizu , Ryoji Hayashi
IPC分类号： H04L2708
CPC分类号： H03G3/001
摘要： A level of a base band signal at an input side of a variable gain amplification circuit is detected by a logarithmic amplifier having a wide input voltage range at a start of an operation, a control unit then performs a coarse feedforward control on a gain of the variable gain amplifier based on the detected level and finds a level of an output of an A/D converter by a mean square deriving circuit and inputs the resulting signal to the control unit. Then the control unit performs a fine feedback control on the variable gain amplifier based on the detected level.
摘要翻译：在可变增益放大电路的输入侧的基带信号的电平由操作开始时具有宽的输入电压范围的对数放大器检测，然后控制单元对该增益进行粗略的前馈控制基于检测电平的可变增益放大器，并通过均方推导电路找到A / D转换器的输出电平，并将所得到的信号输入到控制单元。然后，控制单元基于检测到的电平对可变增益放大器执行精细反馈控制。

6. 发明授权

US06721543B1 Wireless terminal device 失效
标题翻译：无线终端设备
公开(公告)号：US06721543B1
公开(公告)日：2004-04-13
申请号：US09694671
申请日：2000-10-24
申请人： Takatoshi Katsura , Kenji Itoh , Shinjirou Fukuyama , Mitsuru Mochizuki , Hiroaki Nagano , Yoshinori Matsunami
发明人： Takatoshi Katsura , Kenji Itoh , Shinjirou Fukuyama , Mitsuru Mochizuki , Hiroaki Nagano , Yoshinori Matsunami
IPC分类号： H04Q700
CPC分类号： H04B1/52 , H04B1/48
摘要： A wireless terminal device includes a transmitting circuit, an isolator, a band pass filter, a switch, a transmitting antenna, a receiving circuit, a band pass filter, a switch, a receiving antenna, a high-pass filter, a low-pass filter and an input/output port. A transmission wave of a frequency is conveyed from the transmitting circuit to the input/output port via the isolator, the band pass filter and the low pass filter, and further to a vehicle antenna. Here, the transmission wave in the direction towards the receiving circuit is blocked by the high-pass filter. On the other hand, a reception wave of a frequency is conveyed from the vehicle antenna to the input/output port, and to the receiving circuit via the high-pass filter and the band pass filter. Here, the reception wave in the direction towards the transmitting circuit is blocked by the low-pass filter. Thus, transmission and reception can simultaneously be performed via a single input/output port, so that the wireless terminal device of the invention is compatible with a general wireless terminal device which performs simultaneous transmission/reception by one transmitting/receiving share antenna.
摘要翻译：无线终端装置包括发送电路，隔离器，带通滤波器，开关，发送天线，接收电路，带通滤波器，开关，接收天线，高通滤波器，低通滤波器滤波器和输入/输出端口。频率的传输波通过隔离器，带通滤波器和低通滤波器从发射电路传送到输入/输出端口，并且进一步传输到车辆天线。这里，朝向接收电路的方向的发送波被高通滤波器阻挡。另一方面，频率的接收波从车载天线传送到输入/输出端口，并经由高通滤波器和带通滤波器传送到接收电路。这里，朝向发送电路的方向的接收波被低通滤波器阻挡。因此，可以通过单个输入/输出端口同时进行发送和接收，使得本发明的无线终端设备与通过一个发送/接收共享天线同时发送/接收的一般无线终端设备兼容。

7. 发明授权

US06832098B1 Portable telephone 失效
标题翻译：便携式电话
公开(公告)号：US06832098B1
公开(公告)日：2004-12-14
申请号：US10148183
申请日：2002-06-06
申请人： Yoshinori Matsunami , Hiroaki Nagano , Shinjirou Fukuyama , Mitsuru Mochizuki , Kazuhito Niwano , Hirokazu Shimizu
发明人： Yoshinori Matsunami , Hiroaki Nagano , Shinjirou Fukuyama , Mitsuru Mochizuki , Kazuhito Niwano , Hirokazu Shimizu
IPC分类号： H04B700
CPC分类号： H04W52/362 , H04W52/08 , H04W52/10 , H04W52/367
摘要： In a mobile phone according to the invention, a sum of a power control amount (&Dgr;P) instructed by a base station and a sending power (Px) detected by a sending power detecting portion (15) obtained to calculate a sending power (Px′) for a next slot (S1-S3), it is determined whether the sending power (Px′) is equal to or lower than a maximum sending power (Pmax) or not (S4), a power control is performed in accordance with an instruction of the base station when a relationship of (Px′≦Pmax) is present (S5), a value X satisfying (Px′−X≦Pmax) is calculated when the relationship of (Px′≦Pmax) is not present (S6), and the sending power is changed by (&Dgr;P−X) (S7).
摘要翻译：在根据本发明的移动电话中，由基站指示的功率控制量（DeltaP）和由发送功率检测部分（15）检测的发送功率（Px）之和，用于计算发送功率（Px' ）对于下一个时隙（S1-S3），确定发送功率（Px'）是否等于或低于最大发送功率（Pmax）（S4），功率控制根据当存在（Px'<= Pmax）的关系（S5）时基站的指令，当（Px'<= Pmax）的关系不满足时，计算满足（Px'-X <= Pmax）的值X 存在（S6），并且发送功率改变（ΔP-X）（S7）。

8. 发明授权

US06970715B2 Portable wireless transceiver controlling transmission power 失效
标题翻译：便携式无线收发器控制传输功率
公开(公告)号：US06970715B2
公开(公告)日：2005-11-29
申请号：US10333907
申请日：2001-08-01
申请人： Yoshinori Matsunami , Hiroaki Nagano , Shinjirou Fukuyama , Mitsuru Mochizuki , Kazuhito Niwano , Hirokazu Shimizu
发明人： Yoshinori Matsunami , Hiroaki Nagano , Shinjirou Fukuyama , Mitsuru Mochizuki , Kazuhito Niwano , Hirokazu Shimizu
IPC分类号： H03G11/00 , H04B1/04 , H04B7/005 , H04B7/26 , H04Q7/20
CPC分类号： H04W52/52 , H03G11/00 , H04W52/04 , H04W52/362
摘要： In the portable telephone of the present invention, a transmission power upper limit value (STEPLIM) in accordance with temperature (T) is found (S1, S2), whether the transmission power set value (STEPn) of the next slot exceeds the upper limit (STEPLIM) or not is determined (S3, S4), and when it does not exceed, a control signal value (Vc) in accordance with the transmission power set value (STEPn) is applied to a variable gain block (11, 13) (S5, S7). When it exceeds the upper limit, a control signal value (Vc) in accordance with the transmission power upper limit value (STEPLIM) is applied to the variable gain block (11, 13) (S6, S7).
摘要翻译：在本发明的便携式电话机中，发现根据温度（T）的发送功率上限值（STEPLIM）（S 1，S 2），下一个时隙的发送功率设定值（STEPn）是否超过确定上限（STEPLIM）（S 3，S 4），当不超过时，根据发送功率设定值（STEPn）的控制信号值（Vc）被施加到可变增益块（ 11,13）（S 5，S 7）。当超过上限时，将根据发送功率上限值（STEPLIM）的控制信号值（Vc）施加到可变增益块（11,13）（S 6，S 7）。

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