公开(公告)号：US20080126560A1

公开(公告)日：2008-05-29

申请号：US11954838

申请日：2007-12-12

申请人： Yoshihisa TAKAYAMA ,  Susumu Kusakabe ,  Kazushige Tsurumi ,  Tadashi Morita ,  Kunihide Fujii

发明人： Yoshihisa TAKAYAMA ,  Susumu Kusakabe ,  Kazushige Tsurumi ,  Tadashi Morita ,  Kunihide Fujii

IPC分类号： G06F15/16

CPC分类号： H04B5/0075 ,  G06K7/10237 ,  G06K19/0723 ,  H04B5/0031 ,  H04B5/0056 ,  H04L27/02 ,  H04N21/25808 ,  H04W4/02 ,  H04W4/80 ,  H04W88/06

摘要： The present invention relates to a communication system and communication method which enable various types of near field communication, and a data processing apparatus. NFC communication apparatuses 1 to 3 have two features in that each can perform communication in two communication modes and that each can perform data transmission at a plurality of transfer rates. The two communication modes consist of a passive mode and an active mode. In the passive mode, between the NFC communication apparatuses 1 and 2, for example, the NFC communication apparatus 1 transmits data to the NFC communication apparatus 2 by modulating electromagnetic waves generated by itself, while the NFC communication apparatus 2 transmits data to the NFC communication apparatus 1 by performing load modulation on the electromagnetic waves generated by the NFC communication apparatus 1. Alternatively, in the active mode, either of the NFC communication apparatuses 1 and 2 transmits data by modulating electromagnetic waves generated by itself. The present invention can be applied to, for example, an IC card system, etc.

摘要翻译： 本发明涉及能够进行各种类型的近场通信的通信系统和通信方法，以及数据处理装置。 NFC通信设备1至3具有两个特征，每个功能可以以两种通信模式执行通信，并且每个可以以多个传输速率执行数据传输。 两种通信模式由被动模式和活动模式组成。 在被动模式中，NFC通信装置1例如NFC通信装置1通过调制自身产生的电磁波向NFC通信装置2发送数据，而NFC通信装置2向NFC通信发送数据 装置1通过对NFC通信装置1产生的电磁波进行负载调制。 或者，在活动模式中，NFC通信装置1和2中的任一个通过调制由其自身产生的电磁波来发送数据。 本发明可以应用于例如IC卡系统等

公开(公告)号：US20120231735A1

公开(公告)日：2012-09-13

申请号：US13476673

申请日：2012-05-21

申请人： Yoshihisa TAKAYAMA ,  Susumu Kusakabe ,  Kazushige Tsurumi ,  Tadashi Morita ,  Kunihide Fujii

发明人： Yoshihisa TAKAYAMA ,  Susumu Kusakabe ,  Kazushige Tsurumi ,  Tadashi Morita ,  Kunihide Fujii

IPC分类号： H04B5/00

CPC分类号： H04B5/0075 ,  G06K7/10237 ,  G06K19/0723 ,  H04B5/0031 ,  H04B5/0056 ,  H04L27/02 ,  H04N21/25808 ,  H04W4/02 ,  H04W4/80 ,  H04W88/06

摘要： A communication system and communication method enable various types of near field communication. NFC communication apparatuses have two features in that each can perform communication in two communication modes and that each can perform data transmission at a plurality of transfer rates. The two communication modes consist of a passive mode and an active mode. In the passive mode, between the NFC communication apparatuses, for example, a first NFC communication apparatus transmits data to a second NFC communication apparatus by modulating electromagnetic waves generated by itself, while the second NFC communication apparatus transmits data to the first NFC communication apparatus by performing load modulation on the electromagnetic waves generated by the first NFC communication apparatus. Alternatively, in the active mode, either of the NFC communication apparatuses transmits data by modulating electromagnetic waves generated by itself. The present innovation can be applied to, for example, an IC card system, etc.

摘要翻译： 通信系统和通信方法能够进行各种类型的近场通信。 NFC通信设备具有两个特征，每个功能可以以两种通信模式执行通信，并且每个都可以以多个传输速率执行数据传输。 两种通信模式由被动模式和活动模式组成。 在被动模式中，NFC通信装置之间，例如第一NFC通信装置，通过调制由其自身产生的电磁波，向第二NFC通信装置发送数据，而第二NFC通信装置通过以下方式向第一NFC通信装置发送数据 对由第一NFC通信设备产生的电磁波执行负载调制。 或者，在活动模式中，NFC通信装置中的任一个通过调制由其自身产生的电磁波来发送数据。 本发明可以应用于例如IC卡系统等。

公开(公告)号：US20120052806A1

公开(公告)日：2012-03-01

申请号：US13287622

申请日：2011-11-02

申请人： Yoshihisa TAKAYAMA ,  Tadashi MORITA

发明人： Yoshihisa TAKAYAMA ,  Tadashi MORITA

IPC分类号： H04B7/00

CPC分类号： H04L9/0825 ,  H04L9/0838 ,  H04L9/14 ,  H04L63/045 ,  H04L63/0492 ,  H04L63/18 ,  H04L2209/805 ,  H04W76/14

摘要： A communication apparatus includes a short-range communication unit that receives an inquiry signal from a short-range external communication apparatus and transmits a response signal in response to the inquiry signal. The communication apparatus also includes a long-range communication unit that communicates in a range wider than a communication area of the short-range communication unit. Further, the communication apparatus includes a session key generation unit that generates a session key, and an encrypting unit that encrypts the session key. The communication apparatus uses an encryption key transmitted from an external communication apparatus to encrypt the session key into an encrypted session key, transmits the encrypted session key to the external communication apparatus, and receives from the external communication apparatus a request signal to request a long-range communication, with the session key, by the long-range communication unit by using the short-range communication unit.

摘要翻译： 通信装置包括短距离通信单元，其从短距离外部通信装置接收查询信号，并响应于查询信号发送响应信号。 通信装置还包括远程通信单元，其在比短距离通信单元的通信区域宽的范围内进行通信。 此外，通信装置包括生成会话密钥的会话密钥生成单元和加密会话密钥的加密单元。 通信装置使用从外部通信装置发送的加密密钥将会话密钥加密成加密的会话密钥，将加密的会话密钥发送到外部通信装置，并从外部通信装置接收请求信号， 通过远距离通信单元通过远程通信单元与会话密钥进行距离通信。

公开(公告)号：US20090060511A1

公开(公告)日：2009-03-05

申请号：US12199050

申请日：2008-08-27

申请人： Morio TOYOSHIMA ,  Nozomu NISHINAGA ,  Yoshihisa TAKAYAMA ,  Hiroo KUNIMORI

发明人： Morio TOYOSHIMA ,  Nozomu NISHINAGA ,  Yoshihisa TAKAYAMA ,  Hiroo KUNIMORI

IPC分类号： H04J14/00

CPC分类号： H04B10/613 ,  H04B10/61 ,  H04B10/614 ,  H04B10/6165 ,  H04B10/63 ,  H04L7/033

摘要： A coherent optical receiver includes a 90-degree optical hybrid circuit to which a received signal light is input, I-channel and Q-channel photo detectors to which the outputs of the hybrid circuit are input, a clock extraction circuit which reproduces a clock whose speed is the same as a demodulated signal obtained by demodulating the received signal light and which is synchronized therewith, I-channel and Q-channel sampling circuits which sample the signal outputs from the I-channel and Q-channel photo detectors by use of the clock, and a digital signal processing section which digitally processes the sampled signals, converts them to a digital signal, and outputs the digital signal. The digital signal processing section feeds a phase offset signal detected there back to the clock extraction circuit to thereby control the phase of the clock, and compensates dispersion of light within a fiber and phase fluctuation during free-space propagation.

摘要翻译： 相干光接收机包括输入接收信号光的90度光混合电路，输入混合电路的输出的I通道和Q通道光电检测器，再现时钟的时钟提取电路，时钟提取电路 速度与通过解调接收到的信号光并与其同步的解调信号相同，I信道和Q信道采样电路使用I信道和Q信道光检测器对信号输出进行采样， 时钟和数字信号处理部分，数字处理采样信号，将其转换为数字信号，并输出数字信号。 数字信号处理部分将检测到的相位偏移信号馈送到时钟提取电路，从而控制时钟的相位，并补偿光纤在光纤内的色散和自由空间传播期间的相位波动。

公开(公告)号：US20110159816A1

公开(公告)日：2011-06-30

申请号：US13043008

申请日：2011-03-08

申请人： Yoshihisa TAKAYAMA

发明人： Yoshihisa TAKAYAMA

IPC分类号： H04B7/00

CPC分类号： G06K7/0008 ,  G06K7/10297

摘要： The present invention relates to a communication system, a communication device, a communication method, and a program, which make it possible to achieve a reduction in communication time. When performing communication in passive mode, the initiator transmits a polling request frame where a first value is set in time slot information, and when performing communication in simple mode, the initiator transmits a polling request frame where a second value different from the first value is set in time slot information. When the time slot information included in the polling request frame from the initiator has the first value, the target transmits a polling response frame including an ID for identifying the target at the timing of a time slot determined by a random number, and when the time slot information has the second value, the target transmits a polling response frame including real data at the timing of a time slot set in advance. The present invention can be applied to, for example, an IC card system that performs near field communication.

摘要翻译： 通信系统，通信装置，通信方法以及程序技术领域本发明涉及通信系统，通信装置，通信方法以及程序，能够实现通信时间的缩短。 当在被动模式下进行通信时，发起者发送轮询请求帧，其中在时隙信息中设置第一个值，当以简单模式进行通信时，发起者发送轮询请求帧，其中第二个值不同于第一个值 设置时隙信息。 当来自启动器的轮询请求帧中包含的时隙信息具有第一值时，目标在由随机数确定的时隙的定时发送包括用于识别目标的ID的轮询响应帧，并且当时间 时隙信息具有第二值，目标在预先设定的时隙的定时发送包括实际数据的轮询响应帧。 本发明可以应用于例如进行近场通信的IC卡系统。