公开(公告)号：US06570490B1

公开(公告)日：2003-05-27

申请号：US09079272

申请日：1998-05-15

申请人： Takeshi Saitoh ,  Masaaki Shida ,  Tomoaki Ishifuji

发明人： Takeshi Saitoh ,  Masaaki Shida ,  Tomoaki Ishifuji

IPC分类号： G06K19067

CPC分类号： G06K19/0713 ,  G06K19/0723

摘要： A contactless IC card having an antenna, a transmit/receive circuit for recovering data (clock) and electric power from a carrier signal received by the antenna, a logic circuit operated with the electric power supplied thereto from the transmit/receive circuit, and a memory. The transmit/receive circuit has a rectifier circuit for outputting data (clock) and rectifier circuits for electric power in such a manner that the carrier signal is inputted to each of the rectifier circuit for outputting data (clock) and the rectifier circuit for electric power. With this configuration, high frequency matching can be optimized separately for the rectifier circuit for outputting data (clock) and the rectifier circuit for electric power. It is also possible to separately optimize adjustments to a voltage of recovered data (clock) and a recovered supply voltage.

公开(公告)号：US06527177B1

公开(公告)日：2003-03-04

申请号：US09512325

申请日：2000-02-24

申请人： Tomoaki Ishifuji ,  Masaaki Shida

发明人： Tomoaki Ishifuji ,  Masaaki Shida

IPC分类号： G06K500

CPC分类号： G07F7/1008 ,  G06Q20/341 ,  G06Q20/3576 ,  G07C9/00111

摘要： In a conventional method which defines an authentication key for each record, as the number of the records is increased in an access right management for records in a memory of an IC card, the number of the types of authentication keys is also increased to require a larger memory area for storing the authentication keys, thus causing lower memory efficiency. In order to solve such a problem, terminal types (ex. “0H”-“7H”) are defined for interrogators, so that only the number of authentication keys equal to the number of the terminal types are stored. Each record has the number of access permission bits equal to the number of the terminal types, and specifies terminal types, to which an access is permitted, by setting the bits ON or OFF.

公开(公告)号：US08923908B2

公开(公告)日：2014-12-30

申请号：US13183270

申请日：2011-07-14

申请人： Masaaki Shida

发明人： Masaaki Shida

IPC分类号： H04B7/00 ,  H04B1/40 ,  H04L5/00

CPC分类号： H04B1/40 ,  H04L5/001 ,  H04L5/0023

摘要： A distributed antenna system includes a first antenna disposed covering a predetermined communication range, the first antenna carrying out a communication at least at a low-frequency band, and a plurality of second antennas disposed covering the predetermined communication range, the plurality of second antennas carrying out a communication at a high-frequency band. The distributed antenna system is operable to carry out a communication between the first antenna and the second antennas, and a mobile terminal located within the predetermined communication range by means of carrier aggregation using the low-frequency band and the high-frequency band. The distributed antenna system further includes a BB module equipped in a base station for carrying out a communication within the predetermined communication range, the first antenna and the second antennas being each connected to the one BB module via an RF module.

摘要翻译： 分布式天线系统包括覆盖预定通信范围的第一天线，至少在低频带进行通信的第一天线和覆盖预定通信范围的多个第二天线，所述多个第二天线承载 在高频段进行通信。 分布式天线系统可操作以通过使用低频带和高频带的载波聚合来执行第一天线和第二天线之间的通信，以及位于预定通信范围内的移动终端。 分布式天线系统还包括配备在基站中的用于在预定通信范围内进行通信的BB模块，第一天线和第二天线各自经由RF模块连接到一个BB模块。

公开(公告)号：US20120207065A1

公开(公告)日：2012-08-16

申请号：US13137332

申请日：2011-08-05

申请人： Masaaki Shida

发明人： Masaaki Shida

IPC分类号： H04B7/14

CPC分类号： H04B7/155 ,  H04B7/2606 ,  H04W16/26

摘要： A radio communication system for a communication between a base station and a mobile terminal. The radio communication system repeats a signal transmitted from the base station at repeaters that are multistage-connected by a leaky coaxial cable. Each repeater converts a frequency of an input signal into a different frequency and outputs the frequency-converted signal to the leaky coaxial cable connected to the repeater. The repeaters are provided between the leaky coaxial cables connected in series.

摘要翻译： 一种用于基站和移动终端之间的通信的无线电通信系统。 无线电通信系统重复从基站通过泄漏同轴电缆多级连接的转发器发送的信号。 每个中继器将输入信号的频率转换成不同的频率，并将频率转换的信号输出到与中继器连接的泄漏同轴电缆。 中继器设置在串联连接的泄漏同轴电缆之间。

公开(公告)号：US07773686B2

公开(公告)日：2010-08-10

申请号：US11783706

申请日：2007-04-11

申请人： Masaaki Shida ,  Shigenori Hayase ,  Keisuke Yamamoto

发明人： Masaaki Shida ,  Shigenori Hayase ,  Keisuke Yamamoto

IPC分类号： H04B7/02 ,  H04L1/02

CPC分类号： H04L1/1867 ,  H04B7/0417 ,  H04B7/0626 ,  H04L1/0003 ,  H04L1/06 ,  H04L1/1812

摘要： A MIMO wireless data transmission system including a data arrangement in which data to be sent is divided for each transmission stream of MIMO with adding an error detection code thereto and thereby resending a subframe's worth of data when an error occurred at the time of resending. It therefore becomes to avoid the same frame being sent again at the time of resending.

摘要翻译： 一种MIMO无线数据传输系统，包括数据排列，其中，为每个MIMO发送流划分要发送的数据，并添加错误检测码，从而在重新发送时发生错误时重新发送子帧的数据。 因此，避免在重新发送时再次发送相同的帧。

公开(公告)号：US07493092B2

公开(公告)日：2009-02-17

申请号：US11211690

申请日：2005-08-26

申请人： Masaaki Shida ,  Tatemi Ido

发明人： Masaaki Shida ,  Tatemi Ido

IPC分类号： H04B1/02

CPC分类号： H04B7/0689 ,  H04B7/0413 ,  H04B7/0871 ,  H04L1/0001 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0625 ,  H04W88/06

摘要： In a MIMO wireless transceiver, priority control that judges priority of transmit data and a transmission mode table are provided to control an option as to which transmission system SDM or STBC is selected, coding rate and modulation method based on a transmission mode for a transmission destination that is determined by priority of transmission data and status of a communication matrix at the time of data transmission.With such arrangement, a wireless communication system composed of the MIMO wireless transceiver can control coding, MIMO signal processing and modulation methods according to priority of transmit data. More specifically, it is possible to ensure transmission of data having higher priority and improve throughput in total when a plurality of types of data are transmitted.

摘要翻译： 在MIMO无线收发机中，提供判断发送数据的优先级的优先级控制和发送模式表，以控制对于选择哪个发送系统SDM或STBC的选项，基于发送目的地的发送模式的编码率和调制方法 由数据传输时的传输数据的优先级和通信矩阵的状态决定。 通过这样的布置，由MIMO无线收发器构成的无线通信系统可以根据发送数据的优先级来控制编码，MIMO信号处理和调制方式。 更具体地，当发送多种类型的数据时，可以确保具有较高优先级的数据的传输和总体上的总吞吐量。

公开(公告)号：US20080056140A1

公开(公告)日：2008-03-06

申请号：US11783706

申请日：2007-04-11

申请人： Masaaki Shida ,  Shigenori Hayase ,  Keisuke Yamamoto

发明人： Masaaki Shida ,  Shigenori Hayase ,  Keisuke Yamamoto

IPC分类号： H04L1/12

CPC分类号： H04L1/1867 ,  H04B7/0417 ,  H04B7/0626 ,  H04L1/0003 ,  H04L1/06 ,  H04L1/1812

摘要： A MIMO wireless data transmission system including a data arrangement in which data to be sent is divided for each transmission stream of MIMO with adding an error detection code thereto and thereby resending a subframe's worth of data when an error occurred at the time of resending. It therefore becomes to avoid the same frame being sent again at the time of resending.

摘要翻译： 一种MIMO无线数据传输系统，包括数据排列，其中，为每个MIMO发送流划分要发送的数据，并添加错误检测码，从而在重新发送时发生错误时重新发送子帧的数据。 因此，避免在重新发送时再次发送相同的帧。

公开(公告)号：US20070263745A1

公开(公告)日：2007-11-15

申请号：US11785376

申请日：2007-04-17

申请人： Shigenori Hayase ,  Masaaki Shida ,  Keisuke Yamamoto

发明人： Shigenori Hayase ,  Masaaki Shida ,  Keisuke Yamamoto

IPC分类号： H04L1/02

CPC分类号： H04B7/0854 ,  H04B7/0615

摘要： In a MIMO wireless communication system, the transformation process synthesizes the eigenmodes having a large singular value (i.e. a high effective SNR) and the eigenmodes having a small singular value (i.e. a low effective SNR). Thereby, the former eigenmodes are converted into modes having suppressed effective SNR which do not require a large number of levels of modulation, and the latter eigenmodes are converted into modes having increased effective SNR instead. In a MIMO wireless communication system for eigenmode transmission, a large communication capacity is realized without increasing the number of levels of modulation even in a communication environment capable of achieving a high SNR.

摘要翻译： 在MIMO无线通信系统中，变换过程合成具有大奇异值（即高有效SNR）的本征模和具有小奇异值的本征模（即低有效SNR）。 因此，前者本征模式被转换为具有抑制的有效SNR的模式，其不需要大量的调制电平，并且后者本征模式被转换成具有增加的有效SNR的模式。 在用于本征模式传输的MIMO无线通信系统中，即使在能够实现高SNR的通信环境中也可实现大的通信容量而不增加调制电平的数量。

公开(公告)号：US20060270427A1

公开(公告)日：2006-11-30

申请号：US11211690

申请日：2005-08-26

申请人： Masaaki Shida ,  Tatemi Ido

发明人： Masaaki Shida ,  Tatemi Ido

IPC分类号： H04Q7/20 ,  H04B7/00

CPC分类号： H04B7/0689 ,  H04B7/0413 ,  H04B7/0871 ,  H04L1/0001 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0625 ,  H04W88/06

摘要： In a MIMO wireless transceiver, priority control that judges priority of transmit data and a transmission mode table are provided to control an option as to which transmission system SDM or STBC is selected, coding rate and modulation method based on a transmission mode for a transmission destination that is determined by priority of transmission data and status of a communication matrix at the time of data transmission. With such arrangement, a wireless communication system composed of the MIMO wireless transceiver can control coding, MIMO signal processing and modulation methods according to priority of transmit data. More specifically, it is possible to ensure transmission of data having higher priority and improve throughput in total when a plurality of types of data are transmitted.

摘要翻译： 在MIMO无线收发机中，提供判断发送数据的优先级的优先级控制和发送模式表，以控制对于选择哪个发送系统SDM或STBC的选项，基于发送目的地的发送模式的编码率和调制方法 由数据传输时的传输数据的优先级和通信矩阵的状态决定。 通过这样的布置，由MIMO无线收发器构成的无线通信系统可以根据发送数据的优先级来控制编码，MIMO信号处理和调制方式。 更具体地，当发送多种类型的数据时，可以确保具有较高优先级的数据的传输和总体上的总吞吐量。

公开(公告)号：US07016665B2

公开(公告)日：2006-03-21

申请号：US10157393

申请日：2002-05-30

申请人： Tsuyoshi Tamaki ,  Masaaki Shida ,  Tomoaki Ishifuji ,  Nobukazu Doi ,  Kazuko Hamaguchi

发明人： Tsuyoshi Tamaki ,  Masaaki Shida ,  Tomoaki Ishifuji ,  Nobukazu Doi ,  Kazuko Hamaguchi

IPC分类号： H04M11/00

CPC分类号： H04W4/24 ,  H04L12/14 ,  H04L12/1496 ,  H04W40/246 ,  H04W40/248 ,  H04W40/28 ,  H04W84/04 ,  H04W84/18 ,  H04W88/02 ,  H04W88/04 ,  H04W88/06

摘要： A charging system for use in a network composed of wireless terminals with a repeater function. As each terminal with a repeater function receives a communication session start request from a user terminal, it searches for a destination user terminal; when it finds the destination user terminal, it transfers the signal sent from the requesting user terminal to the destination user terminal without the mediation of base stations. The information about the amount of data thus transferred or communication time for transferring data is sent to the charging system which is under the control of the communications service provider concerned.