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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

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。

4. 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。

5. 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。

6. 发明授权

US08942198B2 Channel allocation notifying method, communication method, and communication apparatus 有权
标题翻译：信道分配通知方法，通信方式和通信装置
公开(公告)号：US08942198B2
公开(公告)日：2015-01-27
申请号：US13441591
申请日：2012-04-06
申请人： Noriyuki Fukui , Shigenori Tani , Fumio Ishizu
发明人： Noriyuki Fukui , Shigenori Tani , Fumio Ishizu
IPC分类号： H04W4/00 , H04W72/08 , H04W72/04
CPC分类号： H04W72/0486 , H04W72/042 , H04W72/085
摘要： The number of communication channels necessary for communication with a terminal is calculated by using type and volume of data to be transmitted. When calculated number of communication channels is one, a single communication channel is allocated based on quality information of a communication line to the terminal and, when calculated number of communication channels is more than one, then more than one communication channels are allocated based on the quality information. Allocation information used for notifying of allocated communication channels is generated based on virtual channels, which are defined in advance as channel units having a combination of a plurality of consecutive communication channels, and the allocation information is transmitted to the terminal.
摘要翻译：通过使用要发送的数据的类型和音量来计算与终端通信所需的通信信道的数量。当计算出的通信信道数为1时，根据通信线路的质量信息向终端分配单个通信信道，并且当计算出的通信信道数量多于一个时，则基于该通信信道分配多于一个的通信信道质量信息。基于被预先定义为具有多个连续通信信道的组合的信道单元的虚拟信道来生成用于通知分配的通信信道的分配信息，并且将分配信息发送到终端。

7. 发明申请

US20100165933A1 CHANNEL ALLOCATION NOTIFYING METHOD, COMMUNICATION METHOD, AND COMMUNICATION APPARATUS 有权
标题翻译：通道分配通知方法，通信方法和通信装置
公开(公告)号：US20100165933A1
公开(公告)日：2010-07-01
申请号：US12377865
申请日：2007-08-09
申请人： Noriyuki Fukui , Shigenori Tani , Fumio Ishizu
发明人： Noriyuki Fukui , Shigenori Tani , Fumio Ishizu
IPC分类号： H04W8/00
CPC分类号： H04W72/0486 , H04W72/042 , H04W72/085
摘要： The number of communication channels necessary for communication with a terminal is calculated by using type and volume of data to be transmitted (Step S13). When calculated number of communication channels is one, a single communication channel is allocated based on quality information of a communication line to the terminal and, when calculated number of communication channels is more than one, then more than one communication channels are allocated based on the quality information (Step S14). Allocation information used for notifying of allocated communication channels is generated based on virtual channels, which are defined in advance as channel units having a combination of a plurality of consecutive communication channels, and the allocation information is transmitted to the terminal (Steps S15 and S16).
摘要翻译：通过使用要发送的数据的类型和音量来计算与终端进行通信所需的通信信道的数量（步骤S13）。当计算出的通信信道数为1时，根据通信线路的质量信息向终端分配单个通信信道，并且当计算出的通信信道数量多于一个时，则基于该通信信道分配多于一个的通信信道质量信息（步骤S14）。基于被预先定义为具有多个连续通信信道的组合的信道单元的虚拟信道来生成用于通知分配的通信信道的分配信息，并且向终端发送分配信息（步骤S15和S16）。

8. 发明授权

US06891906B1 Demodulator, clock recovery circuit, demodulation method and clock recovery method 失效
标题翻译：解调器，时钟恢复电路，解调方法和时钟恢复方法
公开(公告)号：US06891906B1
公开(公告)日：2005-05-10
申请号：US09150011
申请日：1998-09-09
申请人： Yasushi Sogabe , Fumio Ishizu , Keishi Murakami
发明人： Yasushi Sogabe , Fumio Ishizu , Keishi Murakami
IPC分类号： H03M5/12 , H04L7/027 , H04L25/49 , H03D1/00
CPC分类号： H03M5/12
摘要： A demodulator is constituted by: a clock recovery circuit for generating a recovered clock from the series of received data and outputting the recovered clock; a state estimation circuit for making an estimation about a reception state such as waveform distortion or the like from the series of received data, and outputting waveform information based on the result of the estimation; and a correlator for correcting a reference and/or sample points on the basis of the recovered clock and the waveform information, obtaining a correlation value between the series of received data and the reference from a plurality of the sample points, and outputting demodulated data on the basis of the correlation value.
摘要翻译：解调器由以下部件构成：时钟恢复电路，用于从所述一系列接收数据产生恢复的时钟并输出恢复时钟; 状态估计电路，用于从所述一系列接收数据中对诸如波形失真等的接收状态进行估计，并且基于所述估计结果来输出波形信息; 以及相关器，用于基于恢复的时钟和波形信息来校正参考和/或采样点，从多个采样点获得所接收的数据序列与参考之间的相关值，并且输出解调数据相关值的基础。

9. 发明授权

US5640426A Clock recovery circuit of demodulator 失效
公开(公告)号：US5640426A
公开(公告)日：1997-06-17
申请号：US599823
申请日：1996-02-12
申请人： Fumio Ishizu
发明人： Fumio Ishizu
IPC分类号： H04L7/027 , H04L7/02 , H04L7/033 , H04L25/06 , H04L27/22 , H04L27/233
CPC分类号： H04L7/0029 , H04L25/061 , H04L27/2332 , H04L7/0334 , H04L7/027
摘要： A clock recovery circuit capable of outputting decision point data without causing any slip of a recovered clock in the case of operation in a continuous mode in a demodulator in which received signals are sampled by a fixed frequency clock to obtain the recovered clock and symbol data are demodulated by using this recovered clock. A shift register stores digital received signals obtained by an A/D conversion of quasi-coherent detection received signals, and a clock phase estimator calculates an estimated phase difference between an output value of a phase generator operated by the fixed frequency clock and a symbol clock of the received signals and outputs timing information and phase information of a decision point for discriminating the data of the received signals. An interpolator inputs the output signal of the clock phase estimator, takes in the digital received signals from the shift register and calculates decision point data by interpolation to output the same. The interpolator operates at the same cycle as the symbol clock on an average.

10. 发明授权

US08165082B2 Channel allocation notifying method, communication method, and communication apparatus 有权
标题翻译：信道分配通知方法，通信方式和通信装置
公开(公告)号：US08165082B2
公开(公告)日：2012-04-24
申请号：US12377865
申请日：2007-08-09
申请人： Noriyuki Fukui , Shigenori Tani , Fumio Ishizu
发明人： Noriyuki Fukui , Shigenori Tani , Fumio Ishizu
IPC分类号： H04W4/00
CPC分类号： H04W72/0486 , H04W72/042 , H04W72/085
摘要： The number of communication channels necessary for communication with a terminal is calculated by using type and volume of data to be transmitted (Step S13). When calculated number of communication channels is one, a single communication channel is allocated based on quality information of a communication line to the terminal and, when calculated number of communication channels is more than one, then more than one communication channels are allocated based on the quality information (Step S14). Allocation information used for notifying of allocated communication channels is generated based on virtual channels, which are defined in advance as channel units having a combination of a plurality of consecutive communication channels, and the allocation information is transmitted to the terminal (Steps S15 and S16).
摘要翻译：通过使用要发送的数据的类型和音量来计算与终端进行通信所需的通信信道的数量（步骤S13）。当计算出的通信信道数为1时，基于通信线路的质量信息分配单个通信信道到终端，并且当计算出的通信信道数量多于一个时，则基于通信信道分配多于一个的通信信道质量信息（步骤S14）。基于被预先定义为具有多个连续通信信道的组合的信道单元的虚拟信道来生成用于通知分配的通信信道的分配信息，并且向终端发送分配信息（步骤S15和S16）。

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