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    Adaptive coding method
    32.
    发明授权
    Adaptive coding method 失效
    自适应编码方法

    公开(公告)号：US6075471A

    公开(公告)日：2000-06-13

    申请号：US41134

    申请日：1998-03-12

    申请人： Tomohiro Kimura ,  Fumitaka Ono ,  Ikuro Ueno ,  Taichi Yanagiya ,  Masayuki Yoshida

    发明人： Tomohiro Kimura ,  Fumitaka Ono ,  Ikuro Ueno ,  Taichi Yanagiya ,  Masayuki Yoshida

    IPC分类号： H04N19/00 ,  H03M7/30 ,  H03M7/40 ,  H04N1/413 ,  H04N19/423 ,  H04N19/91 ,  H03M7/00

    CPC分类号： H03M7/4006

    摘要： An adaptive coding method is comprised of: a fourth step (508), (510) for calculating an occurrence frequency of either the more probable symbol (MPS) or the less probable symbol (LPS) with respective to the entered input; a fifth step (511) for comparing an occurrence time accumulated value calculated as the occurrence frequency at the fourth step with a preselected value (threshold value), and for reducing the occurrence time accumulated value by 1/2 in the case that the occurrence time accumulated value reaches the preselected value (threshold value); and a sixth step (513) for defining the more probable symbol (MPS) and the less probable symbol (LPS) in correspondence with a predetermined region on a numerical line with respect to the data signal to thereby output coordinate values on the numerical line as a corded word.

    摘要翻译： 自适应编码方法包括：第四步骤（508），（510），用于相应于输入的输入计算更可能符号（MPS）或较小可能符号（LPS）的出现频率; 第五步骤（511），用于将作为第四步骤的出现频率计算的出现时间累积值与预选值（阈值）进行比较，并且将发生时间累加值减少+ E，将1/2 + EE 发生时间累积值达到预选值（阈值）的情况; 以及第六步骤（513），用于与数据信号上的数字行上的预定区域相对应地定义更可能的符号（MPS）和较少的可能符号（LPS），从而在数字线上输出坐标值作为 一个有用的词

    Method of transmitting orthogonal frequency division multiplex signal, and transmitter and receiver employed therefor
    33.
    发明授权
    Method of transmitting orthogonal frequency division multiplex signal, and transmitter and receiver employed therefor 失效
    发送正交频分复用信号的方法及其发射机和接收机

    公开(公告)号：US5682376A

    公开(公告)日：1997-10-28

    申请号：US572719

    申请日：1995-12-14

    申请人： Hiroshi Hayashino ,  Yasuo Harada ,  Tomohiro Kimura ,  Yasuhiro Uno ,  Hiroshi Oue

    发明人： Hiroshi Hayashino ,  Yasuo Harada ,  Tomohiro Kimura ,  Yasuhiro Uno ,  Hiroshi Oue

    IPC分类号： H04L27/26 ,  H04J11/00 ,  H04L27/28

    CPC分类号： H04L27/2607 ,  H04L27/2614

    摘要： A complex multiplier complex-multiplies a carrier modulation signal group for decoding the phases and amplitudes of a plurality of carriers which are orthogonal to each other on the frequency axis by a complex signal group having a predetermined specific pattern which varies in phase at random. An inverse Fourier transformer performs inverse Fourier transformation on an output of the complex multiplier, for transforming a digital signal which is multiplexed on the frequency axis to an OFDM signal on the time axis. A guard interval insertion part adds front and rear guard intervals to front and rear parts of each symbol of the OFDM signal respectively. The front and rear guard intervals include data which are identical to those of rear and front end parts of the corresponding symbol respectively. Arithmetic processing which is reverse to that on a transmission side is performed on a receiving side, whereby distortion of received data is removed. Thus, the OFDM signal can be transmitted with no waveform distortion on a data component of each symbol on the frequency axis after Fourier transformation even if a reflected wave is superposed on a direct wave due to a multipath.

    摘要翻译： 复数乘法器复数乘法载波调制信号组，用于解码在频率轴上彼此正交的多个载波的相位和幅度，具有随机相位变化的预定特定模式的复信号组。 傅里叶逆变换器对复数乘法器的输出执行逆傅立叶变换，用于将在频率轴上复用的数字信号在时间轴上变换为OFDM信号。 保护间隔插入部分分别向OFDM信号的每个符号的前后部分添加前后保护间隔。 前后保护间隔包括与相应符号的后端部分和前端部分相同的数据。 在接收侧执行与发送侧相反的算术处理，从而去除接收数据的失真。 因此，即使由于多径而将反射波叠加在直接波上，也可以在傅立叶变换之后的频率轴上的每个符号的数据分量上不发送波形失真的OFDM信号。

    Coding system
    34.
    发明授权
    Coding system 失效
    编码系统

    公开(公告)号：US5592163A

    公开(公告)日：1997-01-07

    申请号：US284086

    申请日：1994-08-01

    申请人： Tomohiro Kimura ,  Shigenori Kino ,  Masayuki Yoshida ,  Fumitaka Ono

    发明人： Tomohiro Kimura ,  Shigenori Kino ,  Masayuki Yoshida ,  Fumitaka Ono

    IPC分类号： H04N19/50 ,  H03M7/40 ,  H04L1/00 ,  H04L25/49 ,  H04N1/32 ,  H04N1/333 ,  H04N1/41 ,  H04N1/417 ,  H04N19/102 ,  H04N19/196 ,  H04N19/423 ,  H04N19/46 ,  H04N19/70 ,  H04N19/91 ,  H03M7/00

    CPC分类号： H04N1/417 ,  H03M7/40 ,  H04N1/32128 ,  H04N1/33307 ,  H04N1/33315 ,  H04N2201/3212

    摘要： This invention relates to a coding system and the coding method in encoding information source symbols of an image. When the total number of original information source symbols cannot be known at the decoding site just from the encoded symbols, it is an object to finish the decoding process correctly and decode the symbols equal to the number of original information source symbols.At an encoding site, the total number of information source unit composed of a finite number of information source symbols is placed at the tail of code at the completion of encoding process. For example, at the encoding site, the number of horizontal pels of an image are transmitted in advance as an information source unit and the total number of lines are placed at the tail of code at the completion of encoding process. At the decoding site, the number of decoded lines is counted and decoded up to the number of lines placed at the tail of code. As a result, it is possible to judge the end of information source symbols without missing the total number.

    摘要翻译： 本发明涉及对图像信息源码元进行编码的编码系统和编码方法。 当原始信息源符号的总数仅在编码符号的解码位置不能被知道时，其目的是正确地完成解码处理，并解码等于原始信息源符号数的符号。 在编码站点，在编码处理完成时，将由有限数量的信息源符号组成的信息源单元的总数放在代码的尾部。 例如，在编码部位，预先将图像的水平像素数作为信息源单位发送，并且在编码处理完成时将总行数置于代码的尾部。 在解码位置，解码行的数量被计数并解码直到放置在码尾的行数。 结果，可以判断信息源符号的结束而不丢失总数。

    Coding system
    35.
    发明授权
    Coding system 失效
    编码系统

    公开(公告)号：US5307062A

    公开(公告)日：1994-04-26

    申请号：US990377

    申请日：1992-12-15

    申请人： Fumitaka Ono ,  Tomohiro Kimura ,  Masayuki Yoshida ,  Shigenori Kino

    发明人： Fumitaka Ono ,  Tomohiro Kimura ,  Masayuki Yoshida ,  Shigenori Kino

    IPC分类号： H03M7/40 ,  H03M7/00

    CPC分类号： H03M7/4006

    摘要： A coding system comprises the comparing circuit which compares a magnitude of the range on the number line which is allocated to the most probability symbol with a magnitude of the fixed range on the number line which is allocated to the Less Probability Symbol. If the range allocated to the MPS is smaller than that to the LPS, and when the symbol is the MPS, the range allocated to the LPS is generated. If the range allocated to the MPS is smaller than that to the LPS, and when the symbol is the LPS, the range allocated to the MPS is generated. By the system, a coding efficiency is improved especially when a probability of occurrence of LPS (Less Probability Symbol) is approximate to 1/2.

    摘要翻译： 编码系统包括比较电路，其将分配给最大概率符号的号线上的范围的大小与分配给较小概率符号的号线上的固定范围的大小进行比较。 如果分配给MPS的范围小于LPS的范围，并且当符号是MPS时，则生成分配给LPS的范围。 如果分配给MPS的范围小于LPS的范围，并且当符号是LPS时，生成分配给MPS的范围。 通过该系统，当LPS的发生概率（Less概率符号）近似为1/2时，编码效率得到改善。

    System and method for acquiring and correction lifetime information within SA information when transitioning between power modes
    36.
    发明授权
    System and method for acquiring and correction lifetime information within SA information when transitioning between power modes 有权
    用于在功率模式之间转换时获取和校正SA信息内的生命周期信息的系统和方法

    公开(公告)号：US09329624B2

    公开(公告)日：2016-05-03

    申请号：US13451731

    申请日：2012-04-20

    申请人： Tomohiro Kimura

    发明人： Tomohiro Kimura

    IPC分类号： G06F1/32 ,  G06F1/00 ,  G06F1/14

    CPC分类号： G06F1/14 ,  G06F1/3206 ,  G06F1/3278 ,  G06F1/3293 ,  Y02D10/122 ,  Y02D10/157

    摘要： A communication apparatus that is capable of enabling communication even when IPsec life time information is taken over. The communication apparatus is connected to a network via a network interface device and operates in a first power mode or a second power mode with less power consumption. A notification unit notifies the network interface device of IPsec life time information when shifting to the second power mode from the first power mode. A storage unit stores first time information showing time of shifting to the second power mode from the first power mode. An acquisition unit acquires the life time information from the network interface device when shifting to the first power mode from the second power mode. A correction unit corrects the life time information based on second time information showing time of shifting to the first power mode from the second power mode and the first time information.

    摘要翻译： 即使在IPsec生命周期信息被接管时也能够进行通信的通信装置。 通信设备经由网络接口​​设备连接到网络，并以较少功耗的第一功率模式或第二功率模式工作。 当从第一功率模式切换到第二功率模式时，通知单元向网络接口设备通知IPsec寿命信息。 存储单元从第一功率模式存储表示从第二功率模式转换到第二功率模式的时间的第一时间信息。 从第二功率模式切换到第一功率模式时，采集单元从网络接口装置获取寿命信息。 校正单元根据表示从第二功率模式切换到第一功率模式的时间的第二时间信息和第一时间信息来校正寿命信息。

    Precoding method, and transmitting device
    37.
    发明授权
    Precoding method, and transmitting device 有权
    预编码方法和发送装置

    公开(公告)号：US09287946B2

    公开(公告)日：2016-03-15

    申请号：US13810783

    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 ,  H04L25/03 ,  H04B7/06

    CPC分类号： H04B7/0456 ,  H04B7/0469 ,  H04B7/06 ,  H04B7/0606 ,  H04B7/0689 ,  H04L25/03898

    摘要： Disclosed is a transmission scheme for transmitting a first modulated signal and a second modulated signal in the same frequency at the same time. According to the transmission scheme, a precoding weight multiplying unit multiplies a precoding weight by a baseband signal after a first mapping and a baseband signal after a second mapping and outputs the first modulated signal and the second modulated signal. In the precoding weight multiplying unit, precoding weights are regularly hopped.

    摘要翻译： 公开了一种用于同时发送相同频率的第一调制信号和第二调制信号的传输方案。 根据传输方案，预编码权重乘法单元在第一映射之后将预编码权重乘以基带信号和在第二映射之后将基带信号相乘，并输出第一调制信号和第二调制信号。 在预编码权重乘法单元中，规则地跳跃预编码权重。

    Signal generating method and signal generating apparatus
    40.
    发明授权
    Signal generating method and signal generating apparatus 有权
    信号产生方法和信号发生装置

    公开(公告)号：US09054757B2

    公开(公告)日：2015-06-09

    申请号：US14241130

    申请日：2012-09-06

    申请人： Yutaka Murakami ,  Tomohiro Kimura ,  Mikihiro Ouchi

    发明人： Yutaka Murakami ,  Tomohiro Kimura ,  Mikihiro Ouchi

    IPC分类号： H04B7/04 ,  H04L5/00

    CPC分类号： H04B7/0469 ,  H04B1/0057 ,  H04B7/0417 ,  H04B7/0426 ,  H04B7/0456 ,  H04B7/0465 ,  H04L5/00 ,  H04L5/0023 ,  H04L5/0044 ,  H04L5/0048 ,  H04L25/0222 ,  H04L27/20 ,  H04L27/34 ,  H04L27/36

    摘要： A transmission method for simultaneously transmitting a first modulated signal and a second modulated signal at the same frequency includes performing precoding on both signals using a fixed precoding matrix and regularly changing the phase of at least one of the signals. In this method, the power ratio between a plurality of signals transmitted from a plurality of antennas at the same frequency and at the same time differs from the power ratio between a plurality of pilot signals transmitted from the plurality of antennas at the same frequency and at the same time, whereby the accuracy of channel estimation by a reception device is improved.

    摘要翻译： 用于以相同频率同时发射第一调制信号和第二调制信号的传输方法包括使用固定预编码矩阵对两个信号执行预编码，并定期改变至少一个信号的相位。 在该方法中，以相同频率和同一时间从多个天线发送的多个信号之间的功率比与在相同频率和相同频率下从多个天线发送的多个导频信号之间的功率比不同 同时，提高了接收装置的信道估计精度。