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1. 发明授权

US08525608B2 PLL frequency synthesizer 有权
标题翻译： PLL频率合成器
公开(公告)号：US08525608B2
公开(公告)日：2013-09-03
申请号：US13319221
申请日：2010-05-11
申请人： Kenji Takahashi , Hidetoshi Yamasaki
发明人： Kenji Takahashi , Hidetoshi Yamasaki
IPC分类号： H03B5/12
CPC分类号： H03L7/099 , H03L7/18 , H03L2207/06 , H03L2207/50
摘要： A PLL frequency synthesizer provides improved phase noise characteristics. In an ADPLL frequency synthesizer, a frequency characteristic adjusting unit compares a predetermined threshold to the difference between the fractional portion of a DCO control signal and the closest integer value, and generates an adjustment signal. A supplementary varactor shifts the oscillating frequency characteristics based on the adjustment signal. By setting the predetermined threshold to a value defining the range in which the possibility of incrementing or decrementing is high, the oscillating frequency characteristics are shifted in cases when the target value of the fractional portion of the DCO control signal is in the range in which the possibility of incrementing or decrementing is high. By shifting the oscillating frequency characteristics, the target value of the fractional portion of the DCO control signal are shifted to a range in which the possibility of incrementing or decrementing is low.
摘要翻译： PLL频率合成器提供改进的相位噪声特性。在ADPLL频率合成器中，频率特性调整单元将预定阈值与DCO控制信号的分数部分与最接近的整数值进行比较，并产生调整信号。辅助变容二极管根据调整信号移动振荡频率特性。通过将预定阈值设置为定义递增或递减的可能性的范围高的值，在DCO控制信号的分数部分的目标值处于该范围内的情况下，振荡频率特性被移位递增或递减的可能性很高。通过移动振荡频率特性，DCO控制信号的分数部分的目标值被转移到增加或减少的可能性低的范围。

2. 发明授权

US07756218B2 Wireless transmission system and wireless transmission method and wireless station and transmitting station for use therein 有权
标题翻译：无线传输系统和无线传输方法以及其中使用的无线站和发射站
公开(公告)号：US07756218B2
公开(公告)日：2010-07-13
申请号：US10569491
申请日：2005-09-16
申请人： Hideki Nakahara , Hitoshi Takai , Hidetoshi Yamasaki , Kenji Miyanaga , Koichiro Tanaka
发明人： Hideki Nakahara , Hitoshi Takai , Hidetoshi Yamasaki , Kenji Miyanaga , Koichiro Tanaka
IPC分类号： H04L27/00
CPC分类号： H04L1/1887 , H04B7/022 , H04B7/0667 , H04B7/0676 , H04B7/15592 , H04W84/042 , H04W84/047
摘要： A wireless transmission system exerts a maximum path diversity effect even if the maximum number of effective branches is limited to a small number. A transmission timing control section determines a transmission start timing to be a timing obtained by delaying a reference timing by a predetermined delay amount. A modulation section modulates a signal by a modulation scheme such that an anti-multipath property is exerted when the signal is demodulated on a receiver side, and transmits the modulated signal at the transmission start timing. In a receiving station, a demodulation section demodulates the receive signal to obtain receive data. The predetermined delay amount is such that signals are received at the receiving station at a plurality of signal-receiving timings, and the number of signal-receiving timings is less than or equal to a predetermined maximum number of effective branches, a difference between the signal-receiving timings is greater than or equal to a predetermined delay resolution and is less than or equal to a predetermined maximum delay.
摘要翻译：无线传输系统即使最大数量的有效分支被限制为少数，也施加最大路径分集效应。发送定时控制部分将发送开始定时确定为通过将基准定时延迟预定延迟量而获得的定时。调制部通过调制方式对信号进行调制，使得当在接收机侧解调信号时施加反多径特性，并在发送开始定时发送调制信号。在接收站中，解调部分解调接收信号以获得接收数据。预定延迟量使得在多个信号接收定时在接收站处接收信号，并且信号接收定时的数量小于或等于预定的最大有效分支数，信号之间的差接收定时大于或等于预定的延迟分辨率，并且小于或等于预定的最大延迟。

3. 发明授权

US06181749B2 Diversity reception apparatus 有权
标题翻译：分集接收装置
公开(公告)号：US06181749B2
公开(公告)日：2001-01-30
申请号：US09182063
申请日：1998-10-29
申请人： Yoshio Urabe , Hitoshi Takai , Hidetoshi Yamasaki , Kenichi Mori
发明人： Yoshio Urabe , Hitoshi Takai , Hidetoshi Yamasaki , Kenichi Mori
IPC分类号： H04B708
CPC分类号： H01Q3/267 , H04B7/0817 , H04B7/0888 , H04L1/06
摘要： A demodulator 1 obtains demodulated data in a plurality of channels. Estimating portions 2a and 2b estimate and output the numbers of erroneous symbols and error locations thereof in the demodulated data. A data comparator 3 compares the demodulated data corresponding to the error locations with the demodulated data in the corresponding locations in other channels to determine whether the error location is correct, and it outputs a decision signal in response to the determination. A data selector 4 selects one of the demodulated data in the plurality of channels on the basis of the numbers of erroneous symbols and the decision signals and outputs the data as selected data. It is then possible to maintain the reliability of error detection even when a less redundant short error detecting code is used, and also to accurately select a channel of good quality even when the demodulated data in all channels contain the same extent of errors.
摘要翻译：解调器1获得多个信道中的解调数据。估计部分2a和2b估计并输出解调数据中的错误符号和错误位置的数目。数据比较器3将对应于错误位置的解调数据与其他通道中的相应位置中的解调数据进行比较，以确定错误位置是否正确，并且响应于该确定而输出判定信号。数据选择器4基于错误符号和判定信号的数量选择多个信道中的解调数据中的一个，并输出数据作为选择的数据。即使当使用较少冗余的短错误检测码时也可以保持错误检测的可靠性，并且即使当所有信道中的解调数据包含相同的错误程度时，也可以准确地选择质量良好的信道。

4. 发明授权

US5825820A Waveform shaping method and equipment 失效
公开(公告)号：US5825820A
公开(公告)日：1998-10-20
申请号：US264616
申请日：1994-06-23
申请人： Yoshio Urabe , Shouichi Koga , Hitoshi Takai , Koji Kai , Hidetoshi Yamasaki
发明人： Yoshio Urabe , Shouichi Koga , Hitoshi Takai , Koji Kai , Hidetoshi Yamasaki
IPC分类号： H03G3/30 , H04L25/03 , H04L27/20 , H04L27/36 , H04L27/00
CPC分类号： H03G3/3089 , H03G3/3047 , H04L25/03859 , H04L27/2067 , H04L27/362
摘要： In the transmitter which carries out burst transmission using information data as a packet, if the status is divided into four modes, namely, burst stop mode, burst rising mode, burst continuous mode, and burst falling mode, a waveform shaping equipment designed to read out shaped waveform data for each mode from outputs of either of the two memory tables, the first memory table which holds waveform data for specific data patterns used in common in burst rising mode and burst falling mode and the second memory table which holds waveform data for all data patterns used in the burst continuous mode, or a waveform shaping equipment comprising the third memory table which holds waveform data corresponding to all the data patterns used in the burst rising mode and the fourth memory table which holds waveform data corresponding to all data patterns used in the burst falling mode and generating shaped waveform data by synthesizing the two outputs of the third and the fourth memory tables at the time of burst continuous mode.

5. 发明授权

US5454012A Digital signal transmission device for improvement of anti-multipath feature, a method of the same and digital signal transmission waveform 失效
标题翻译：用于改善抗多径特征的数字信号传输装置，一种相同方法和数字信号传输波形
公开(公告)号：US5454012A
公开(公告)日：1995-09-26
申请号：US227111
申请日：1994-04-13
申请人： Hitoshi Takai , Yoshio Urabe , Hidetoshi Yamasaki
发明人： Hitoshi Takai , Yoshio Urabe , Hidetoshi Yamasaki
IPC分类号： H04B14/06 , H04L27/18 , H04L27/20 , H04L27/04
CPC分类号： H04L27/18
摘要： A digital signal transmission device for transmitting a signal generated by modulating a carrier wave according to a binary or M-ary data sequence. Such device comprises a differentially encoding unit for converting the original data sequence into a transmission data sequence, a waveform generation unit for.degree. generating a phase transition waveform in each time slot which corresponds to each data included in the transmission data sequence, and a modulation unit for modulating the carrier wave according to a signal which has the phase transition waveform generated by the waveform generation unit. The information to be transmitted is present in a difference between two data which are spaced form each other by a prescribed time slots. The phase transition waveform includes a center part and a connection part for linking the center parts in adjacent time slots where a phase transition waveform in the center part of a present time slot is generated according to a corresponding data, then a phase transition waveform in the connection part is generated to continue on the phase transition waveform in the center parts of time slots succeeding to and preceding the present time slot without having a discontinuity even at the linking point.
摘要翻译：一种数字信号传输装置，用于发送根据二进制或多元数据序列调制载波产生的信号。这种装置包括用于将原始数据序列转换成发送数据序列的差分编码单元，用于在与发送数据序列中包括的每个数据相对应的每个时隙中产生相位变化波形的DEG的波形生成单元和调制单元用于根据具有由波形生成单元生成的相变波形的信号来调制载波。要发送的信息以彼此间隔开规定时隙的两个数据之间的差异存在。相变波形包括中心部分和连接部分，用于根据相应的数据链接当前时隙的中心部分中的相位变化波形的相邻时隙中的中心部分，然后在生成连接部分，以便在当前时隙之前和之前的时隙的中心部分的相位转变波形上继续，而不会在连接点处具有不连续性。

6. 发明授权

US08675759B2 Wireless transmission system, and wireless station and method used for same 有权
标题翻译：无线传输系统，以及无线电台及其使用方法
公开(公告)号：US08675759B2
公开(公告)日：2014-03-18
申请号：US12294568
申请日：2007-03-20
申请人： Hitoshi Takai , Hidetoshi Yamasaki , Hideki Nakahara , Kenji Miyanaga
发明人： Hitoshi Takai , Hidetoshi Yamasaki , Hideki Nakahara , Kenji Miyanaga
IPC分类号： H04B7/02
CPC分类号： H04B7/2662
摘要： A wireless transmission system performs multi-station simultaneous transmission of data. The wireless transmission system includes wireless stations for transmitting and receiving data. Transmitter-side wireless stations, a multipath channel, and receiver-side wireless stations constitute a system for path diversity. At least one wireless station among the wireless stations determines, depending on a response packet with respective to a multi-station simultaneous transmission request packet transmitted by itself or other stations, delay amounts from a reference timing during multi-station simultaneous transmission in the wireless transmission system, and symbol waveforms that are a basis for a modulated waveform. A difference between each delay amount is set to be larger than or equal to a predetermined delay resolution for each symbol waveform, and a difference between maximum and minimum values of the delay amounts is set to be smaller than or equal to a predetermined maximum delay.
摘要翻译：无线传输系统执行多站同时传输数据。无线传输系统包括用于发送和接收数据的无线站。发射机侧无线站，多路径信道和接收机侧无线站构成路径分集的系统。无线站中的至少一个无线站根据与其自身或其他站发送的多站同时发送请求分组相对应的响应分组来确定在无线发送中的多站同时发送期间的基准定时的延迟量系统和符号波形，这是调制波形的基础。每个延迟量之间的差设定为大于或等于每个符号波形的预定延迟分辨率，并且延迟量的最大值和最小值之间的差被设置为小于或等于预定最大延迟。

7. 发明申请

US20120119839A1 PLL FREQUENCY SYNTHESIZER 有权
标题翻译： PLL频率合成器
公开(公告)号：US20120119839A1
公开(公告)日：2012-05-17
申请号：US13319221
申请日：2010-05-11
申请人： Kenji Takahashi , Hidetoshi Yamasaki
发明人： Kenji Takahashi , Hidetoshi Yamasaki
IPC分类号： H03L7/099
CPC分类号： H03L7/099 , H03L7/18 , H03L2207/06 , H03L2207/50
摘要： Disclosed is a PLL frequency synthesizer the phase noise characteristics of which are improved. To achieve this, in an ADPLL frequency synthesizer (100), a frequency characteristic adjusting unit (180) compares a predetermined threshold to the difference between the fractional portion of a DCO control signal and the closest integer value, and generates an adjustment signal based on the comparison result, and a supplementary varactor (115) shifts the oscillating frequency characteristics based on the adjustment signal received from the frequency characteristic adjusting unit (180). By setting the predetermined threshold to a value defining the range in which the possibility of incrementing or decrementing is high, the oscillating frequency characteristics can be shifted in cases when the target value of the fractional portion of the DCO control signal is in the range in which the possibility of incrementing or decrementing is high. By shifting the oscillating frequency characteristics, the target value of the fractional portion of the DCO control signal can be shifted to a range in which the possibility of incrementing or decrementing is low, so the phase noise characteristics of the synthesizer can be improved.
摘要翻译：公开了一种PLL频率合成器，其相位噪声特性得到改善。为了实现这一点，在ADPLL频率合成器（100）中，频率特性调整单元（180）将预定阈值与DCO控制信号的分数部分与最接近的整数值之间的差进行比较，并且基于比较结果和辅助变容二极管（115）基于从频率特性调整单元（180）接收的调整信号来移动振荡频率特性。通过将预定阈值设定为限定增加或减少的可能性的范围高的值，在DCO控制信号的小数部分的目标值在以下的范围内的情况下，可以移动振荡频率特性：递增或递减的可能性很大。通过移动振荡频率特性，可以将DCO控制信号的小数部分的目标值移动到递增或递减的可能性低的范围，从而可以提高合成器的相位噪声特性。

8. 发明申请

US20120002707A1 PLL FREQUENCY SYNTHESIZER 审中-公开
标题翻译： PLL频率合成器
公开(公告)号：US20120002707A1
公开(公告)日：2012-01-05
申请号：US13233806
申请日：2011-09-15
申请人： Hidetoshi YAMASAKI
发明人： Hidetoshi YAMASAKI
IPC分类号： H03D3/24 , H04B1/38 , H03L7/06
CPC分类号： H03L7/099 , H03L7/18 , H03L2207/06 , H03L2207/50
摘要： A PLL frequency synthesizer includes: a phase comparator configured to detect a phase difference between a reference clock signal and an output signal of the PLL frequency synthesizer; a loop filter configured to output a control value composed of a total of an integer value and a decimal value; a first controller configured to output a first control signal corresponding to the integer value in synchronization with a first clock; a second controller configured to output a second control signal representing the decimal value as a mean value in synchronization with a second clock, and when the PLL frequency synthesizer is in a locked state, to limit a range of values which the second control signal can have to a range in the locked state; and a digital controlled oscillator configured to oscillate at a frequency based on a combination of frequency control by the first and second control signals.
摘要翻译： PLL频率合成器包括：相位比较器，被配置为检测参考时钟信号和PLL频率合成器的输出信号之间的相位差; 循环滤波器，被配置为输出由总数和十进制值组成的控制值; 第一控制器，被配置为与第一时钟同步地输出与所述整数值对应的第一控制信号; 第二控制器，被配置为与第二时钟同步地输出表示十进制值的第二控制信号作为平均值，并且当PLL频率合成器处于锁定状态时，限制第二控制信号可以具有的值的范围到锁定状态的范围; 以及数字控制振荡器，被配置为基于通过第一和第二控制信号的频率控制的组合以频率振荡。

9. 发明授权

US07787417B2 Radio communication system 有权
标题翻译：无线通信系统
公开(公告)号：US07787417B2
公开(公告)日：2010-08-31
申请号：US11631291
申请日：2005-07-05
申请人： Hidetoshi Yamasaki , Kenji Miyanaga , Hitoshi Takai , Koichiro Tanaka
发明人： Hidetoshi Yamasaki , Kenji Miyanaga , Hitoshi Takai , Koichiro Tanaka
IPC分类号： H04B7/26
CPC分类号： H04W16/24 , H04W74/08
摘要： In a wireless communication system using the contention method, collisions between transmission signals sent from terminals to a base station are avoided, and a communication area is flexibly formed while suppressing unnecessary radiation of the communication area. The base station includes antennas disposed such that wireless zones cover mutually different areas, wireless units connected to the antennas in one-to-one correspondence, and for, via the respective antennas, receiving wireless signals from the terminal stations in the wireless zones and transmitting wireless signals to the terminal stations in the wireless zones, a data processing unit for processing the wireless signals received by the plurality of wireless units and generate data to be transmitted to the terminal stations, and a communication control unit for controlling the wireless units so as to, during a slot other than a transmission request slot, form one communication area combining the wireless zones of all of the antennas, and during the transmission request slot, form mutually independent communication areas less than or equal in number to the antennas.
摘要翻译：在使用争用方法的无线通信系统中，避免了从终端发送到基站的发送信号之间的冲突，并且在抑制通信区域的不必要的辐射的同时灵活地形成通信区域。基站包括天线布置成使得无线区域覆盖相互不同的区域，一对一对应连接到天线的无线单元，并且经由各个天线，从无线区域中的终端站接收无线信号并发送向无线区域中的终端站发送无线信号;数据处理单元，用于处理由多个无线单元接收到的无线信号，并生成要发送到终端站的数据;以及通信控制单元，用于控制无线单元，以便在除了传输请求时隙之外的时隙中，形成组合所有天线的无线区域的一个通信区域，并且在传输请求时隙期间，形成数量小于或等于天线的相互独立的通信区域。

10. 发明授权

US07773568B2 Inter-station transmission method, radio base station monitoring method, and device using the method 有权
标题翻译：站间传输方法，无线基站监控方法和使用该方法的设备
公开(公告)号：US07773568B2
公开(公告)日：2010-08-10
申请号：US10575533
申请日：2004-12-09
申请人： Hidetoshi Yamasaki , Hitoshi Takai
发明人： Hidetoshi Yamasaki , Hitoshi Takai
IPC分类号： H04J3/00
CPC分类号： H04W24/00
摘要： A inter-station transmission method of extending time allocated for a transmission path delay of an inter-station transmission path within a predetermined turnaround time, and increasing an inter-station transmission distance. A radio base station reproduces a clock synchronized with a BSU transmission clock DCLK used when transmitting downlink transmission data from a communication control station. The radio base station processes the downlink transmission data. The clock synchronization eliminates a necessity of data format conversion between the communication control station and the radio base station, a buffer accumulating transmission data in preparation for the conversion is not necessary. This reduces a turnaround time of a mobile communication system. When the inter-station transmission method is applied to dedicated short-range communications, having a fixed turnaround time, a distance between the communication control station and the radio base station can be increased by a distance according to the eliminated delay time.
摘要翻译：一种在预定的周转时间内延长分配给站间传输路径的传输路径延迟的时间并增加站间传输距离的站间传输方法。无线基站再现与从通信控制站发送下行链路发送数据时使用的BSU发送时钟DCLK同步的时钟。无线基站处理下行链路发送数据。时钟同步消除了在通信控制站和无线电基站之间的数据格式转换的必要性，不需要为准备转换而累积传输数据的缓冲器。这减少了移动通信系统的周转时间。当将站间传输方式应用于具有固定周转时间的专用短距离通信时，可以根据消除的延迟时间将通信控制站与无线基站之间的距离增加一定距离。

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