公开(公告)号：US08326243B2

公开(公告)日：2012-12-04

申请号：US12611350

申请日：2009-11-03

申请人： Tatsuo Nakagawa ,  Masayuki Miyazaki

发明人： Tatsuo Nakagawa ,  Masayuki Miyazaki

IPC分类号： H04W52/02

CPC分类号： H04B1/04

摘要： The electronic circuit includes: a micro controller unit; a timer operable to measure a standby time of the micro controller unit; a buffer circuit connected with an output-signal terminal of the timer; a logic circuit controlled by an output signal of the timer and an output signal of the micro controller unit; and a power-on switch controlled by the logic circuit. The buffer circuit has no protection diode connected with an input terminal thereof on a power-source side, and connected to a common power source shared with the micro controller unit. The switch is one for controlling the power source of the micro controller unit and buffer circuit. The micro controller unit is made to transition to an active state to either a standby state or a power-source cutoff state during the standby time.

摘要翻译： 电子电路包括：微控制器单元; 可操作以测量微控制器单元的待机时间的定时器; 与定时器的输出信号端连接的缓冲电路; 由定时器的输出信号和微控制器单元的输出信号控制的逻辑电路; 以及由逻辑电路控制的上电开关。 缓冲电路在电源侧没有与其输入端连接的保护二极管，并连接到与微控制器单元共用的公共电源。 该开关是用于控制微控制器单元和缓冲电路的电源的开关。 在待机时间期间，微控制器单元转换到待机状态或电源截止状态。

公开(公告)号：US07830953B2

公开(公告)日：2010-11-09

申请号：US11598687

申请日：2006-11-14

申请人： Ryosuke Fujiwara ,  Tatsuo Nakagawa ,  Masayuki Miyazaki

发明人： Ryosuke Fujiwara ,  Tatsuo Nakagawa ,  Masayuki Miyazaki

IPC分类号： H04B1/06

CPC分类号： H04L7/0058 ,  H04B1/7183 ,  H04L7/10

摘要： The present invention conducts the initial synchronization acquisition of the rapid and high precision ultra-wideband signal without complicatedness of hardware and increase in power consumption. For this purpose, a communication apparatus for exchanging information with an intermittent pulse train signal searches all phases among the pulses in the predetermined search resolution in the process to acquire initial synchronization of the input pulse, estimates the region where the peak phase of the largest output value exists, narrows the region where the peak phase exists up to the predetermined range by repeating the search for all phases in the estimated region in the next step, and conducts acquisition of detailed synchronization in the estimated region. In every step, the threshold value for judging existence of signal or a gain in the analog circuit is controlled for each step. Moreover, the search resolution is set coarse for estimation of the peak phase and set fine for acquisition of detailed synchronization.

摘要翻译： 本发明对快速高精度超宽带信号进行初始同步采集，无需硬件复杂度和功耗增加。 为此，用于与间歇脉冲串信号交换信息的通信装置在获取输入脉冲的初始同步的处理中在预定搜索分辨率的脉冲之中搜索所有相位，估计最大输出的峰值相位的区域 存在，通过在下一步骤中重复对估计区域中的所有相位的搜索，将峰值相位存在的区域变窄到预定范围，并且在估计区域中进行详细同步的获取。 在每个步骤中，对于每个步骤控制用于判断信号存在的阈值或模拟电路中的增益。 此外，搜索分辨率被设置为粗略用于估计峰值相位并且设置为精细以用于获取详细同步。

公开(公告)号：US20100103986A1

公开(公告)日：2010-04-29

申请号：US12654659

申请日：2009-12-29

申请人： Tatsuo Nakagawa ,  Ryosuke Fujiwara ,  Masayuki Miyazaki ,  Goichi Ono

发明人： Tatsuo Nakagawa ,  Ryosuke Fujiwara ,  Masayuki Miyazaki ,  Goichi Ono

IPC分类号： H04B1/707

CPC分类号： H04B1/71637

摘要： With the objective of enhancing receiving performance of a receiver with respect to pulse signals spread by spread codes, the receiver comprises an RF front-end section which performs amplification, an AD converter section which AD-converts signals outputted from the RF front-end section, a baseband section which inversely spreads the output of the AD converter section and performs signal detection and demodulation thereon, a reception environment measuring section which measures reception environment using the input signals of the baseband section, and a parameter setting section which sets parameters for respective parts on the basis of signals outputted from the reception environment measuring section. The parameter setting section sets the parameters for the respective parts to the optimum according to the environmental condition measured by the reception environment measuring section.

公开(公告)号：US20070116104A1

公开(公告)日：2007-05-24

申请号：US11598687

申请日：2006-11-14

申请人： Ryosuke Fujiwara ,  Tatsuo Nakagawa ,  Masayuki Miyazaki

发明人： Ryosuke Fujiwara ,  Tatsuo Nakagawa ,  Masayuki Miyazaki

IPC分类号： H04B1/00 ,  H04L7/00

CPC分类号： H04L7/0058 ,  H04B1/7183 ,  H04L7/10

摘要： The present invention conducts the initial synchronization acquisition of the rapid and high precision ultra-wideband signal without complicatedness of hardware and increase in power consumption. For this purpose, a communication apparatus for exchanging information with an intermittent pulse train signal searches all phases among the pulses in the predetermined search resolution in the process to acquire initial synchronization of the input pulse, estimates the region where the peak phase of the largest output value exists, narrows the region where the peak phase exists up to the predetermined range by repeating the search for all phases in the estimated region in the next step, and conducts acquisition of detailed synchronization in the estimated region. In every step, the threshold value for judging existence of signal or a gain in the analog circuit is controlled for each step. Moreover, the search resolution is set coarse for estimation of the peak phase and set fine for acquisition of detailed synchronization.

摘要翻译： 本发明对快速高精度超宽带信号进行初始同步采集，无需硬件复杂度和功耗增加。 为此，用于与间歇脉冲串信号交换信息的通信装置在获取输入脉冲的初始同步的处理中在预定搜索分辨率的脉冲之中搜索所有相位，估计最大输出的峰值相位的区域 存在，通过在下一步骤中重复对估计区域中的所有相位的搜索，将峰值相位存在的区域变窄到预定范围，并且在估计区域中进行详细同步的获取。 在每个步骤中，对于每个步骤控制用于判断信号存在的阈值或模拟电路中的增益。 此外，搜索分辨率被设置为粗略用于估计峰值相位并且设置为精细以用于获取详细同步。

公开(公告)号：US08265122B2

公开(公告)日：2012-09-11

申请号：US12654659

申请日：2009-12-29

申请人： Tatsuo Nakagawa ,  Ryosuke Fujiwara ,  Masayuki Miyazaki ,  Goichi Ono

发明人： Tatsuo Nakagawa ,  Ryosuke Fujiwara ,  Masayuki Miyazaki ,  Goichi Ono

IPC分类号： H04B1/69 ,  H04B1/713

CPC分类号： H04B1/71637

摘要： With the objective of enhancing receiving performance of a receiver with respect to pulse signals spread by spread codes, the receiver comprises an RF front-end section which performs amplification, an AD converter section which AD-converts signals outputted from the RF front-end section, a baseband section which inversely spreads the output of the AD converter section and performs signal detection and demodulation thereon, a reception environment measuring section which measures reception environment using the input signals of the baseband section, and a parameter setting section which sets parameters for respective parts on the basis of signals outputted from the reception environment measuring section. The parameter setting section sets the parameters for the respective parts to the optimum according to the environmental condition measured by the reception environment measuring section.

摘要翻译： 为了提高接收机相对于由扩展码扩展的脉冲信号的接收性能，接收机包括执行放大的RF前端部分，对从RF前端部分输出的信号进行AD转换的AD转换器部分 基带部分，其对AD转换器部分的输出进行反扩频并对其进行信号检测和解调;接收环境测量部分，其使用基带部分的输入信号测量接收环境;以及参数设置部分，其设置各自的参数 基于从接收环境测量部输出的信号。 参数设定部根据由接收环境测定部测定的环境条件，将各部分的参数设定为最佳。

公开(公告)号：US20110092223A1

公开(公告)日：2011-04-21

申请号：US12926862

申请日：2010-12-14

申请人： Tatsuo Nakagawa ,  Masayuki Miyazaki ,  Kenichi Mizugaki ,  Ryosuke Fujiwara

发明人： Tatsuo Nakagawa ,  Masayuki Miyazaki ,  Kenichi Mizugaki ,  Ryosuke Fujiwara

IPC分类号： H04W24/00 ,  H04B7/00

CPC分类号： G01S5/06 ,  H04J3/0682

摘要： In a system for measuring a time difference of arrival of signals for positioning, an accurate time difference is measured by a receiver which is reduced in power consumption, size, and cost. The system comprises a node (under measurement) for transmitting a positioning signal, a reference station for transmitting a reference signal, and a plurality of access points for receiving the positioning signal and reference signal, and a server connected to the plurality of access points through a network. Each of the plurality of access points measures a time difference between the reception of the positioning signal and the reception of the reference signal, and a frequency deviation from the reference station, using a clock signal and a signal for shifting the clock signal, and the server calculates the position of the node based on the measured time difference and frequency deviation.

摘要翻译： 在用于测量用于定位的信号的到达时间差的系统中，由功率消耗，尺寸和成本降低的接收器测量准确的时间差。 该系统包括用于发送定位信号的节点（未测量），用于发送参考信号的参考站和用于接收定位信号和参考信号的多个接入点，以及连接到多个接入点的服务器 一个网络。 多个接入点中的每一个都使用时钟信号和用于移位时钟信号的信号来测量定位信号的接收和参考信号的接收之间的时间差以及与参考站的频率偏差，并且 服务器根据测得的时差和频率偏差计算节点的位置。

公开(公告)号：US20070179633A1

公开(公告)日：2007-08-02

申请号：US11656444

申请日：2007-01-23

申请人： Goichi Ono ,  Tatsuo Nakagawa ,  Masayuki Miyazaki

发明人： Goichi Ono ,  Tatsuo Nakagawa ,  Masayuki Miyazaki

IPC分类号： G05B11/01

CPC分类号： G06F1/26

摘要： Power supply voltages delivered to processing units of a terminal device, respectively, and a delivery range of the power supply voltages are changed over. There is provided the terminal device comprising a connecter for connecting power supply boards for delivering respective power supply voltages thereto, a plurality of processing units to be operated by the respective power supply voltages delivered from the power supply boards, wherein by connecting the respective power supply boards differing in circuit structure from each other with the connecter, the processing units to which the respective power supply voltages are delivered and levels of the respective power supply voltages as delivered are changed over.

摘要翻译： 分别输送到终端设备的处理单元的电源电压和电源电压的传送范围被切换。 提供了一种终端装置，其包括连接器，用于连接用于向其提供相应的电源电压的电源板;多个处理单元，用于由从电源板传送的各个电源电压进行操作，其中，通过连接各个电源 电路结构彼此不同的电路板通过连接器彼此不同，转换各个电源电压的处理单元和交付的各个电源电压的电平。

公开(公告)号：US20070060079A1

公开(公告)日：2007-03-15

申请号：US11356171

申请日：2006-02-17

申请人： Tatsuo Nakagawa ,  Masayuki Miyazaki ,  Kenichi Mizugaki ,  Ryosuke Fujiwara

发明人： Tatsuo Nakagawa ,  Masayuki Miyazaki ,  Kenichi Mizugaki ,  Ryosuke Fujiwara

IPC分类号： H03D7/16

CPC分类号： G01S5/06 ,  H04J3/0682

摘要： In a system for measuring a time difference of arrival of signals for positioning, an accurate time difference is measured by a receiver which is reduced in power consumption, size, and cost. The system comprises a node (under measurement) for transmitting a positioning signal, a reference station for transmitting a reference signal, and a plurality of access points for receiving the positioning signal and reference signal, and a server connected to the plurality of access points through a network. Each of the plurality of access points measures a time difference between the reception of the positioning signal and the reception of the reference signal, and a frequency deviation from the reference station, using a clock signal and a signal for shifting the clock signal, and the server calculates the position of the node based on the measured time difference and frequency deviation.

摘要翻译： 在用于测量用于定位的信号的到达时间差的系统中，由功率消耗，尺寸和成本降低的接收器测量准确的时间差。 该系统包括用于发送定位信号的节点（未测量），用于发送参考信号的参考站和用于接收定位信号和参考信号的多个接入点，以及连接到多个接入点的服务器 一个网络。 多个接入点中的每一个都使用时钟信号和用于移位时钟信号的信号来测量定位信号的接收和参考信号的接收之间的时间差以及与参考站的频率偏差，并且 服务器根据测得的时差和频率偏差计算节点的位置。

公开(公告)号：US08073465B2

公开(公告)日：2011-12-06

申请号：US12926862

申请日：2010-12-14

申请人： Tatsuo Nakagawa ,  Masayuki Miyazaki ,  Kenichi Mizugaki ,  Ryosuke Fujiwara

发明人： Tatsuo Nakagawa ,  Masayuki Miyazaki ,  Kenichi Mizugaki ,  Ryosuke Fujiwara

IPC分类号： H04W24/00 ,  H04L27/00

CPC分类号： G01S5/06 ,  H04J3/0682

摘要： In a system for measuring a time difference of arrival of signals for positioning, an accurate time difference is measured by a receiver which is reduced in power consumption, size, and cost. The system comprises a node (under measurement) for transmitting a positioning signal, a reference station for transmitting a reference signal, and a plurality of access points for receiving the positioning signal and reference signal, and a server connected to the plurality of access points through a network. Each of the plurality of access points measures a time difference between the reception of the positioning signal and the reception of the reference signal, and a frequency deviation from the reference station, using a clock signal and a signal for shifting the clock signal, and the server calculates the position of the node based on the measured time difference and frequency deviation.

公开(公告)号：US07664163B2

公开(公告)日：2010-02-16

申请号：US11288349

申请日：2005-11-29

申请人： Tatsuo Nakagawa ,  Ryosuke Fujiwara ,  Masayuki Miyazaki ,  Goichi Ono

发明人： Tatsuo Nakagawa ,  Ryosuke Fujiwara ,  Masayuki Miyazaki ,  Goichi Ono

IPC分类号： H04B1/69

CPC分类号： H04B1/71637

摘要： With the objective of enhancing receiving performance of a receiver with respect to pulse signals spread by spread codes, the receiver comprises an RF front-end section which performs amplification, an AD converter section which AD-converts signals outputted from the RF front-end section, a baseband section which inversely spreads the output of the AD converter section and performs signal detection and demodulation thereon, a reception environment measuring section which measures reception environment using the input signals of the baseband section, and a parameter setting section which sets parameters for respective parts on the basis of signals outputted from the reception environment measuring section. The parameter setting section sets the parameters for the respective parts to the optimum according to the environmental condition measured by the reception environment measuring section.

摘要翻译： 为了提高接收机相对于由扩展码扩展的脉冲信号的接收性能，接收机包括执行放大的RF前端部分，对从RF前端部分输出的信号进行AD转换的AD转换器部分 基带部分，其对AD转换器部分的输出进行反扩频并对其进行信号检测和解调;接收环境测量部分，其使用基带部分的输入信号测量接收环境;以及参数设置部分，其设置各自的参数 基于从接收环境测量部输出的信号。 参数设定部根据由接收环境测定部测定的环境条件，将各部分的参数设定为最佳。