公开(公告)号：US08837613B2

公开(公告)日：2014-09-16

申请号：US13255388

申请日：2011-01-13

申请人： Mihail Petrov ,  Tomohiro Kimura ,  Mikihiro Ouchi

发明人： Mihail Petrov ,  Tomohiro Kimura ,  Mikihiro Ouchi

IPC分类号： H04B7/02 ,  H04L27/06 ,  H04L27/04 ,  H04L27/26 ,  H04L25/02

CPC分类号： H04L5/0048 ,  H04B7/02 ,  H04B7/0613 ,  H04L25/0224 ,  H04L27/2611 ,  H04L27/2613 ,  H04L27/2627 ,  H04L27/2649

摘要： The present invention relates to orthogonal frequency-division multiplexing (OFDM) communication systems with multiple transmit antennas receive antennas, and in particular to methods for inserting scattered pilots (SPs) into the transmit signals of such OFDM systems, for estimating channel properties on the basis of the scattered pilots, a multi-antenna OFDM transmitter, and an OFDM receiver. In this context, it is the particular approach of the present invention to keep the same SP pattern like in the single-transmitter case, to partition the pilots into as many subsets as there are transmitters (transmit antennas), and to interleave these subsets both in time and in frequency. In this manner, the granularity of pilots of the same subset is reduced. This offers increased flexibility in designing the scattered pilot patterns and greater accuracy of the estimated channel properties.

摘要翻译： 本发明涉及具有多个发射天线的正交频分复用（OFDM）通信系统接收天线，特别涉及用于将散射导频（SP）插入到这种OFDM系统的发射信号中的方法，用于基于 的分散导频，多天线OFDM发射机和OFDM接收机。 在这种情况下，本发明的特定方法是在单发射机情况下保持相同的SP模式，以将导频划分成与发射机（发射天线）一样多的子集，并且将这些子集两者交织 在时间和频率上。 以这种方式，减少了相同子集的导频的粒度。 这提供了设计分散导频模式和估计信道特性的更高精度的更大灵活性。

公开(公告)号：US08792324B2

公开(公告)日：2014-07-29

申请号：US13389915

申请日：2010-08-17

申请人： Mihail Petrov ,  Tomohiro Kimura

发明人： Mihail Petrov ,  Tomohiro Kimura

IPC分类号： H04J11/00 ,  H04B7/02

CPC分类号： H04J11/0063 ,  H04B7/02

摘要： The present invention relates to digital data communication and provides an efficient method for generating multi-dimensional constellations for digital data modulation with a high degree of modulation diversity, a method for transmitting and receiving data on the basis of such constellations, and a corresponding apparatus. This is achieved by considering only multi-dimensional rotation matrices with all elements on the diagonal having the same first absolute value and all other elements having the same non-zero second absolute value. In this manner, multi-dimensional rotation matrices can be generated having only a single independent parameter and a structure that is as regular as possible. The independent parameter can be configured in order to minimize the error probability for various constellation sizes.

摘要翻译： 本发明涉及数字数据通信，并且提供了一种用于产生具有高度调制分集的数字数据调制的多维星座的有效方法，基于这样的星座发送和接收数据的方法以及相应的装置。 这通过仅考虑具有相同第一绝对值的对角线上的所有元素的多维旋转矩阵并且具有相同的非零第二绝对值的所有其它元素来实现。 以这种方式，可以生成仅具有单个独立参数和尽可能规则的结构的多维旋转矩阵。 可以配置独立参数以便最小化各种星座大小的误差概率。

公开(公告)号：US08483189B2

公开(公告)日：2013-07-09

申请号：US10548377

申请日：2004-03-08

申请人： Akira Kisoda ,  Sadashi Kageyama ,  Tomohiro Kimura ,  Hiroki Furukawa ,  Kenichiro Hayashi ,  Yuji Nakai

发明人： Akira Kisoda ,  Sadashi Kageyama ,  Tomohiro Kimura ,  Hiroki Furukawa ,  Kenichiro Hayashi ,  Yuji Nakai

IPC分类号： H04B7/212 ,  H04B7/26

CPC分类号： H04W72/0446 ,  H04B7/2643 ,  H04L1/0041 ,  H04L1/0065 ,  H04L1/0071 ,  H04L5/0044 ,  H04L5/0048 ,  H04L27/2602 ,  H04L27/2647 ,  H04L27/2657 ,  H04L27/2662 ,  H04L2025/03414 ,  H04N5/4401 ,  H04N5/455 ,  H04N21/2383 ,  H04N21/41407 ,  H04N21/4382 ,  H04N21/6112

摘要： A transmission method of a digital broadcast, which is compatible with a DVB-T terrestrial digital broadcast system in Europe, saves a battery in a mobile terminal. Superframes in DVB-T are divided into units each including plural symbols so that an integer number of TS packets can be carried in each slot. At least one slot is used to transmit one service. Energy dispersion, Reed-Solomon coding, byte interleaving, convolutional coding, and time interleaving are applied to each service. When services for mobile terminal reception and services for fixed terminals are transmitted as the provided services, null packets may be transmitted before and after the slot carrying the mobile receiver service so that the fixed reception service and the mobile reception services are not mixed.

公开(公告)号：US20130136208A1

公开(公告)日：2013-05-30

申请号：US13810721

申请日：2011-12-01

申请人： Yutaka Murakami ,  Tomohiro Kimura ,  Mikihiro Ouchi

发明人： Yutaka Murakami ,  Tomohiro Kimura ,  Mikihiro Ouchi

IPC分类号： H04B7/04

CPC分类号： H04B7/0456 ,  H04B7/0413 ,  H04B7/0617

摘要： A transmission method simultaneously transmitting a first modulated signal and a second modulated signal at a common frequency performs precoding on both signals using a fixed precoding matrix and regularly changes the phase of at least one of the signals, thereby improving received data signal quality for a reception device.

公开(公告)号：US20130121307A1

公开(公告)日：2013-05-16

申请号：US13811064

申请日：2012-01-20

申请人： Yutaka Murakami ,  Tomohiro Kimura ,  Mikihiro Ouchi

发明人： Yutaka Murakami ,  Tomohiro Kimura ,  Mikihiro Ouchi

IPC分类号： H04B7/06

CPC分类号： H04L27/2628 ,  H04B7/0667 ,  H04B7/0682 ,  H04B7/0697 ,  H04B7/0842 ,  H04L1/0048 ,  H04L1/0071 ,  H04L5/0023 ,  H04L5/0082 ,  H04L5/12 ,  H04L27/20 ,  H04L27/265 ,  H04L27/368

摘要： A transmission method simultaneously transmitting a first modulated signal and a second modulated signal at a common frequency performs precoding on both signals using a fixed precoding matrix and regularly changes the phase of at least one of the signals, thereby improving received data signal quality for a reception device.

公开(公告)号：US08429698B2

公开(公告)日：2013-04-23

申请号：US12671158

申请日：2008-07-30

申请人： Yoshikazu Hayashi ,  Kazuya Ueda ,  Makoto Sekitoh ,  Ippei Kanno ,  Tomohiro Kimura ,  Masahiro Hamada

发明人： Yoshikazu Hayashi ,  Kazuya Ueda ,  Makoto Sekitoh ,  Ippei Kanno ,  Tomohiro Kimura ,  Masahiro Hamada

IPC分类号： H04N7/173

CPC分类号： H04H20/28 ,  H04H20/33 ,  H04H20/42 ,  H04H20/74 ,  H04H20/93 ,  H04N21/235 ,  H04N21/2362 ,  H04N21/4263 ,  H04N21/4334 ,  H04N21/4345 ,  H04N21/435 ,  H04N21/4622

摘要： A digital broadcast transmission device generates channel combination information associating a plurality of physical channels. The digital broadcast transmission device divides a bit stream into a plurality of bit streams, the bit stream including program-related information having added thereto channel combination information, and transmits the divided bit streams on the plurality of physical channels, respectively. A digital broadcast reception device selects the plurality of physical channels using a plurality of front ends based on the channel combination information, and demodulates broadcast waves received on the plurality of physical channels, respectively. The digital broadcast reception device combines bit streams obtained from the demodulation, and outputs the combined bit stream. The digital broadcast reception device also simultaneously transmits a light bit stream on a different single physical channel, the light bit stream being a bit stream smaller in amount of information than the combined bit stream.

摘要翻译： 数字广播发送装置生成与多个物理信道相关联的信道组合信息。 数字广播发送装置将比特流分割为多个比特流，该比特流包括附加了频道组合信息的节目相关信息，并且分别在多个物理频道上发送划分的比特流。 数字广播接收装置基于信道组合信息，使用多个前端来选择多个物理信道，并且分别解调在多个物理信道上接收的广播波。 数字广播接收装置组合从解调获得的比特流，并输出组合比特流。 数字广播接收装置还在不同的单个物理信道上同时发送轻比特流，所述光比特流是比组合的比特流更小的信息量的比特流。

公开(公告)号：US08363759B2

公开(公告)日：2013-01-29

申请号：US12600706

申请日：2009-03-31

申请人： Mariko Araki ,  Tomohiro Kimura

发明人： Mariko Araki ,  Tomohiro Kimura

IPC分类号： H03D1/04

CPC分类号： H04L25/0224 ,  H04L25/022 ,  H04L27/2647 ,  H04L27/2665 ,  H04L27/2695

摘要： A receiver which allows suitable setting of the position of an FFT (Fast Fourier Transform) window (execution timing) when executing FFT to demodulate an OFDM (Orthogonal Frequency Division Multiplex) signal. The receiver estimates the transmission path property of a received OFDM signal and estimates an ISI (Inter Symbol Interference) amount in each case of a plurality of FFT window position candidates from the estimated transmission path property. An FFT window position candidate wherein the ISI amount is estimated to be the smallest among the FFT window position candidates is set as an actual FFT window position, and executes Fourier transformation.

摘要翻译： 当执行FFT以解调OFDM（正交频分复用）信号时，允许对FFT（快速傅立叶变换）窗口（执行定时）的位置的适当设置的接收机。 接收机估计接收的OFDM信号的传输路径属性，并根据估计的传输路径属性估计在多个FFT窗口位置候选的每种情况下的ISI（符号间干扰）量。 将FFT窗口位置候补（其中将ISI量估计为最小的FFT窗口位置候选）设置为实际的FFT窗口位置，并执行傅立叶变换。

公开(公告)号：US20130021295A1

公开(公告)日：2013-01-24

申请号：US13637806

申请日：2011-03-16

申请人： Tomohiro Kimura ,  Keiichi Fukuyama ,  Yasuyuki Ogawa

发明人： Tomohiro Kimura ,  Keiichi Fukuyama ,  Yasuyuki Ogawa

IPC分类号： G09G3/36 ,  G06F3/042 ,  G06F3/045 ,  G06F3/041 ,  G06F3/044

CPC分类号： G06F3/0414 ,  G02F1/13338 ,  G06F3/0412

摘要： A display device with a touch panel function includes a pressure sensor as a first sensor for detecting presence/absence of pressurization on an input screen, an electrostatic capacitance touch panel as a second sensor for detecting a contact position on the input screen, whose power consumption for waiting in a detectable state is higher than power consumption of the first sensor, and a control unit for switching the second sensor into the detectable state when presence of pressurization is detected by the first sensor. The input screen also serves as a display screen.

摘要翻译： 具有触摸屏功能的显示装置包括作为用于检测输入屏幕上有无加压的第一传感器的压力传感器，作为用于检测输入屏幕上的接触位置的第二传感器的静电电容触摸面板，其功耗 用于在可检测状态下等待高于第一传感器的功率消耗;以及控制单元，用于当第一传感器检测到加压存在时将第二传感器切换到可检测状态。 输入屏幕也用作显示屏幕。

公开(公告)号：US20130020573A1

公开(公告)日：2013-01-24

申请号：US13637539

申请日：2010-03-16

申请人： Keiichi Fukuyama ,  Tomohiro Kimura ,  Tokuaki Kuniyoshi

发明人： Keiichi Fukuyama ,  Tomohiro Kimura ,  Tokuaki Kuniyoshi

IPC分类号： H01L21/02 ,  H01L29/04 ,  H01L29/84

CPC分类号： G01L1/146 ,  G02F1/13338 ,  G02F2201/12 ,  G06F3/0412 ,  G06F3/0414 ,  H01L27/12 ,  H01L27/1214

摘要： A pressure detecting device includes a glass substrate as a substrate, a lower electrode arranged on the glass substrate, an upper electrode spaced apart from the lower electrode and facing the lower electrode, the upper electrode having holes as one or more through-openings, and a source line as a change extracting wiring for detecting a change in electrical state caused by the upper electrode receiving pressure to deflect toward the lower electrode.

摘要翻译： 压力检测装置包括玻璃基板作为基板，布置在玻璃基板上的下电极，与下电极间隔开并面对下电极的上电极，上电极具有作为一个或多个通孔的孔，以及 源极线作为用于检测由上部电极接收压力引起的朝向下部电极偏转的电气状态的变化的布线。

公开(公告)号：US08275056B2

公开(公告)日：2012-09-25

申请号：US12307783

申请日：2007-07-30

申请人： Tomohiro Kimura ,  Kenichiro Hayashi

发明人： Tomohiro Kimura ,  Kenichiro Hayashi

IPC分类号： H04B1/10

CPC分类号： H04L25/0222 ,  H04B17/309 ,  H04L1/0045 ,  H04L5/0048 ,  H04L25/0232 ,  H04L25/03159 ,  H04L27/2647 ,  H04L27/2657

摘要： A channel characteristic calculation unit 23 estimates channel characteristics based on SP signals included in received signals, and a symbol interpolation filter 24 frequency-shifts frequency transfer characteristics and filters output signals of the channel characteristic calculation unit 23. A filter control unit 27 estimates channel characteristics based on CP signals included in the received signals and observes the estimated channel characteristics to determine a shift amount by which the symbol interpolation filter 24 frequency-shifts the frequency transfer characteristics. The symbol interpolation filter 24 frequency-shifts the frequency transfer characteristics based on the shift amount determined by the filter control unit 27.

摘要翻译： 信道特性计算单元23基于接收信号中包括的SP信号来估计信道特性，并且符号插值滤波器24对频率传输特性进行频移，并对信道特性计算单元23的输出信号进行滤波。滤波器控制单元27估计信道特性 基于包含在接收信号中的CP信号，并观察估计的信道特性，以确定符号插值滤波器24对频率传送特性进行频率偏移的偏移量。 符号插值滤波器24根据由滤波器控制单元27确定的移位量对频率传递特性进行频移。