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21. 发明申请

US20050272464A1 Wireless communication device having wireless module compatible with wireless communication system 审中-公开
标题翻译：具有与无线通信系统兼容的无线模块的无线通信设备
公开(公告)号：US20050272464A1
公开(公告)日：2005-12-08
申请号：US11097293
申请日：2005-04-04
申请人： Takashi Ishikawa , Katsuhiko Tsunehara , Hirotake Ishii
发明人： Takashi Ishikawa , Katsuhiko Tsunehara , Hirotake Ishii
IPC分类号： H04B1/38 , H04B1/40 , H04B7/00 , H04M1/00
CPC分类号： H04B1/403 , H04B1/0007
摘要： An AD/DA converter is equipped to the wireless communication device main unit side, and a transmission and reception base band filter is equipped to the wireless module side. Due to this arrangement, miniaturization and setting of the cost at a low level of the wireless module replaced for every communication system and the wireless communication device as a total become possible.
摘要翻译：无线通信设备主单元侧配备有AD / DA转换器，无线模块侧配备有发送接收基带滤波器。由于这种安排，对于每个通信系统和无线通信设备替代的无线模块的低级别的成本的小型化和设置成为可能。

22. 发明授权

US08229042B2 Orthogonal frequency division multiplexing demodulator 有权
标题翻译：正交频分复用解调器
公开(公告)号：US08229042B2
公开(公告)日：2012-07-24
申请号：US12575057
申请日：2009-10-07
申请人： Koichi Aratani , Hirotake Ishii , Dan Xu
发明人： Koichi Aratani , Hirotake Ishii , Dan Xu
IPC分类号： H04L27/06
CPC分类号： H04L27/2679 , H04L27/2662
摘要： An OFDM demodulator which does not require a reference signal for synchronization of carriers and can reduce influence of phase rotation by a propagation path when carrier synchronization is made. The OFDM demodulator performs Fourier transform plural times in 2 or more different operation ranges for the same OFDM symbol, calculates phases of sub carriers from the plural-time results of the Fourier transform, compares the calculated phases for each of the plural-time results of the Fourier transform and detects an error in frequency of reproduction carrier from the compared results.
摘要翻译： OFDM解调器，其不需要用于载波同步的参考信号，并且当进行载波同步时可以减少传播路径的相位旋转的影响。 OFDM解调器在相同的OFDM符号的2个以上的不同的操作范围内进行多次傅立叶变换，从傅里叶变换的多次结果中计算出副载波的相位，傅里叶变换并从比较结果检测再现载波的频率误差。

23. 发明授权

US07756489B2 Software defined radio and library configuration therefor 失效
标题翻译：软件定义的无线电和库配置
公开(公告)号：US07756489B2
公开(公告)日：2010-07-13
申请号：US11349199
申请日：2006-02-08
申请人： Takashi Ishikawa , Manabu Kawabe , Katsuhiko Tsunehara , Hirotake Ishii
发明人： Takashi Ishikawa , Manabu Kawabe , Katsuhiko Tsunehara , Hirotake Ishii
IPC分类号： H04B1/40
CPC分类号： H04B1/0003 , H04B1/40
摘要： A radio communication apparatus having a radio modem for processing a signal in a radio frequency band, a signal processor for processing a base band of a transmission or reception signal, and a CPU for processing a protocol. The signal processor includes signal processing blocks implemented by programmable software. Each of the signal processing blocks processes a signal of reception signal data input from the radio modem or from a preceding stage of one of the signal processing blocks or a signal of transmission signal data input from the CPU or from the preceding stage of signal processing block on the basis of a control signal input together with the transmission signal data or the reception signal data. The control signal can include information required by all the signal processing blocks in a common format.
摘要翻译：一种无线电通信装置，具有用于处理无线电频带中的信号的无线电调制解调器，用于处理发送或接收信号的基带的信号处理器和用于处理协议的CPU。信号处理器包括由可编程软件实现的信号处理块。每个信号处理块处理从无线电调制解调器输入的接收信号数据的信号或从信号处理块中的一个输入的传输信号数据的信号或从信号处理块的前一级输入的传输信号数据的信号基于与发送信号数据或接收信号数据一起输入的控制信号。控制信号可以包括通用格式的所有信号处理块所需的信息。

24. 发明授权

US07403580B2 Software defined radio system 失效
标题翻译：软件定义无线电系统
公开(公告)号：US07403580B2
公开(公告)日：2008-07-22
申请号：US11025944
申请日：2005-01-03
申请人： Hirotake Ishii , Katsuhiko Tsunehara , Takashi Yano
发明人： Hirotake Ishii , Katsuhiko Tsunehara , Takashi Yano
IPC分类号： H03D1/00
CPC分类号： H04L27/0008 , H04L7/04
摘要： The invention provides a technique that saves rate conversion accompanying complicated calculations and shares an analog filter for anti-aliasing in a sampling device. The sampling device employs an anti-alias filter having a fixed cutoff frequency, an A/D converter and a D/A converter each having a clock signal input, which are capable of varying a sampling frequency, and a PLL circuit capable of varying the frequency of a clock signal; and it sets the sampling frequency not lower than an integral multiple of a signal bandwidth and double the cutoff frequency for sampling.
摘要翻译：本发明提供一种技术，其可以节省伴随复杂计算的速率转换，并且在采样装置中共享用于抗锯齿的模拟滤波器。采样装置采用具有固定截止频率的抗混叠滤波器，具有能够改变采样频率的时钟信号输入的A / D转换器和D / A转换器，以及能够改变采样频率的PLL电路时钟信号的频率; 并且将采样频率设置为不低于信号带宽的整数倍，并将采样的截止频率加倍。

25. 发明申请

US20070142012A1 Wireless communication receiver 审中-公开
标题翻译：无线通信接收机
公开(公告)号：US20070142012A1
公开(公告)日：2007-06-21
申请号：US11702493
申请日：2007-02-06
申请人： Yukinori Akamine , Hisayoshi Kajiwara , Satoshi Tanaka , Takashi Yano , Hirotake Ishii , Akio Yamamoto , Kazuaki Hori , Kazuhiko Hikasa
发明人： Yukinori Akamine , Hisayoshi Kajiwara , Satoshi Tanaka , Takashi Yano , Hirotake Ishii , Akio Yamamoto , Kazuaki Hori , Kazuhiko Hikasa
IPC分类号： H04B1/06 , H04B7/00
CPC分类号： H03G3/3078 , H03G3/3052 , H04B1/707
摘要： A wireless communication receiver that is able to lessen the effect of noise that accompanies gain change by programmable gain amplifiers. The receiver includes an AGC controller which controls the timing at which the programmable gain amplifiers make gain change, using a terminal counter and a sequencer. The receiver prevents gain change noise signals during the reception of control signals and other signals that are susceptible to noise. By the timing control feature, the programmable gain amplifiers make gain change while reducing noise impact.
摘要翻译：一种无线通信接收机，能够通过可编程增益放大器减轻伴随增益变化的噪声影响。接收机包括AGC控制器，其使用终端计数器和定序器来控制可编程增益放大器使增益改变的定时。接收器在接收到易受噪声的控制信号和其它信号期间防止增益变化噪声信号。通过定时控制功能，可编程增益放大器可实现增益改变，同时降低噪声影响。

26. 发明授权

US07194244B2 Wireless communication receiver 失效
公开(公告)号：US07194244B2
公开(公告)日：2007-03-20
申请号：US10253648
申请日：2002-09-25
申请人： Yukinori Akamine , Hisayoshi Kajiwara , Satoshi Tanaka , Takashi Yano , Hirotake Ishii , Akio Yamamoto , Kazuaki Hori , Kazuhiko Hikasa
发明人： Yukinori Akamine , Hisayoshi Kajiwara , Satoshi Tanaka , Takashi Yano , Hirotake Ishii , Akio Yamamoto , Kazuaki Hori , Kazuhiko Hikasa
IPC分类号： H04B1/06
CPC分类号： H03G3/3078 , H03G3/3052 , H04B1/707
摘要： A wireless communication receiver that is able to lessen the effect of noise that accompanies gain change by programmable gain amplifiers. The receiver includes an AGC controller which controls the timing at which the programmable gain amplifiers make gain change, using a terminal counter and a sequencer. The receiver prevents gain change noise signals during the reception of control signals and other signals that are susceptible to noise. By the timing control feature, the programmable gain amplifiers make gain change while reducing noise impact.

27. 发明申请

US20060046771A1 Radio communication apparatus with a bus dedicated to data transmission 失效
标题翻译：具有专用于数据传输的总线的无线电通信装置
公开(公告)号：US20060046771A1
公开(公告)日：2006-03-02
申请号：US11209713
申请日：2005-08-24
申请人： Katsuhiko Tsunehara , Hirotake Ishii , Manabu Kawabe , Takashi Ishikawa
发明人： Katsuhiko Tsunehara , Hirotake Ishii , Manabu Kawabe , Takashi Ishikawa
IPC分类号： H04M1/00
CPC分类号： G06F13/4265
摘要： Disclosed is the hardware construction of a radio communication apparatus that can meet advanced radio communications. A control bus for transferring control signals between a main processor and components is separated from a data bus for transferring transmission/receive signals between processor units including sub-processors and an external interface. The sub-processors constitute the processor units, and a software defined radio of the present invention may include plural processor units. The processor units are connected by a dedicated interunit interface. The processor units may include multiple sub-processors, which are connected serially through an interprocessor interface.
摘要翻译：公开了能够满足先进无线通信的无线通信装置的硬件结构。用于在主处理器和组件之间传送控制信号的控制总线与用于在包括子处理器和外部接口的处理器单元之间传送发送/接收信号的数据总线分离。子处理器构成处理器单元，并且本发明的软件定义的无线电可以包括多个处理器单元。处理器单元通过专用的互连接口连接。处理器单元可以包括通过处理器间接口串行连接的多个子处理器。

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