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1.发明授权公开(公告)号：US08224243B2
公开(公告)日：2012-07-17
申请号：US11954838
申请日：2007-12-12
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 performs, by first and second data processing apparatuses, an electromagnetic-induction communication using a carrier having a single frequency. A transfer rate for use between the first and second data processing apparatuses is changeable in one transaction. The first data processing apparatus determines whether a transfer rate can be changed based on data transmitted from the second data processing apparatus. When the first data processing apparatus determines that the transfer rate can be changed, the first data processing apparatus transmits to the second data processing apparatus a request to change the transfer rate to one of a plurality of transfer rates.
摘要翻译： 通信系统通过第一和第二数据处理装置执行使用具有单一频率的载波的电磁感应通信。 第一和第二数据处理装置之间使用的传送速率在一个事务中是可变的。 第一数据处理装置基于从第二数据处理装置发送的数据确定传送速率是否可以改变。 当第一数据处理装置确定可以改变传送速率时，第一数据处理装置向第二数据处理装置发送将传送速率改变为多个传送速率之一的请求。
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公开(公告)号：US08200153B2
公开(公告)日：2012-06-12
申请号：US11954838
申请日：2007-12-12
摘要： A communication system performs, by first and second data processing apparatuses, an electromagnetic-induction communication using a carrier having a single frequency. A transfer rate for use between the first and second data processing apparatuses is changeable in one transaction. The first data processing apparatus determines whether a transfer rate can be changed based on data transmitted from the second data processing apparatus. When the first data processing apparatus determines that the transfer rate can be changed, the first data processing apparatus transmits to the second data processing apparatus a request to change the transfer rate to one of a plurality of transfer rates.
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3.发明申请公开(公告)号：US20050077356A1
公开(公告)日：2005-04-14
申请号：US10503936
申请日：2003-10-28
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通过对由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
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4.发明授权公开(公告)号：US07346061B2
公开(公告)日：2008-03-18
申请号：US10503936
申请日：2003-10-28
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
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公开(公告)号：US08417184B2
公开(公告)日：2013-04-09
申请号：US13476673
申请日：2012-05-21
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.
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公开(公告)号：US07209706B2
公开(公告)日：2007-04-24
申请号：US10715447
申请日：2003-11-19
IPC分类号： H04B7/00
CPC分类号： G06K7/10237 , G06K7/0008 , G06K7/10029 , G06K19/0723
摘要： A communication apparatus and a communication method prevent responses from being simultaneously received from two or more communicating parties. A first NFC apparatus transmits data for requesting IDs, and acquires IDs sent from second and third NFC apparatuses in reply to the request. After acquiring the IDs of the second and third NFC apparatuses, the first NFC apparatus transmits data that includes their IDs as the data for the second and third NFC apparatuses. If the first NFC apparatus cannot properly acquire the IDs of the second and third NFC apparatuses, then it sends the data for requesting their IDs again. Upon receipt of the request for the IDs, the second and third NFC apparatuses generate their own IDs by using random numbers and send the generated IDs. If the second and third NFC apparatuses receive the request for their IDs again, then they re-generate their own IDs by using random numbers, and send the re-generated IDs again. The present invention can be applied to, for example, an IC card system.
摘要翻译： 通信装置和通信方法防止从两个或更多个通信方同时接收响应。 第一NFC设备发送用于请求ID的数据，并且从第二NFC设备和第三NFC设备发送的ID接收请求。 在获取第二和第三NFC设备的ID之后，第一NFC设备将包括其ID的数据作为第二和第三NFC设备的数据发送。 如果第一NFC设备不能正确地获取第二和第三NFC设备的ID，则再发送用于请求其ID的数据。 在接收到对ID的请求时，第二和第三NFC设备通过使用随机数生成自己的ID并发送所生成的ID。 如果第二和第三NFC设备再次接收到他们的ID的请求，则通过使用随机数来重新生成自己的ID，并再次发送重新生成的ID。 本发明可以应用于例如IC卡系统。
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公开(公告)号：US08514688B2
公开(公告)日：2013-08-20
申请号：US10538659
申请日：2003-12-08
IPC分类号： H04J9/00 , H04L12/413
CPC分类号： H04B5/0056 , H04B5/0031 , H04W74/0808
摘要： An RF (radio frequency) signal is generated at a first communication device and is modulated. A second RF signal provided to the first communication device from the second communication device is demodulated. The second RF signal is detected. The generating is actuated to initiate an active or a passive mode communication, when the detecting does not detect the second RF signal at a level of a first threshold or more, the active mode including a transmission of modulated data at the first communication device and the second communication device, the passive mode providing load modulated communication from the second communication device to the first communication device. When the first communication device receives an indication to start a communication of the active mode from the second communication device, the demodulating receives data at a level of a second threshold or higher, the second threshold being higher than the first threshold.
摘要翻译： 在第一通信设备处产生RF（射频）信号并被调制。 解调从第二通信设备提供给第一通信设备的第二RF信号。 检测第二RF信号。 当检测不检测到处于第一阈值或更高级别的第二RF信号时，产生被激活以启动主动或被动模式通信，所述活动模式包括在第一通信设备处的调制数据的传输和 第二通信设备，被动模式提供从第二通信设备到第一通信设备的负载调制通信。 当第一通信装置从第二通信装置接收到开始活动模式的通信的指示时，解调以第二阈值或更高的水平接收数据，第二阈值高于第一阈值。
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公开(公告)号：US20060245402A1
公开(公告)日：2006-11-02
申请号：US10538659
申请日：2003-12-08
IPC分类号： H04Q7/24
CPC分类号： H04B5/0056 , H04B5/0031 , H04W74/0808
摘要： The present invention relates to a communication system, a communication device, and a communication method for easily solving a problem of a hidden terminal. Communication devices 1 and 3 determine whether or not an electromagnetic wave at the level of a magnetic-flux density TH1 or more for determining the suppression of the output of carrier. When the electromagnetic wave at the level of the magnetic-flux density TH1 or more for determining the suppression of the output of the carrier is not detected, the communication devices 1 and 3 start the output of the electromagnetic wave. A communication device 2 needs the electromagnetic wave at the level of a magnetic-flux density TH2 or more of the carrier at an operating limit, which is higher than the magnetic-flux density TH1 for determining suppression of the output of carrier so as to obtain data via the electromagnetic wave. The present invention is applied to, e.g., an IC (Integrated Circuit) card system.
摘要翻译： 本发明涉及一种用于容易解决隐藏终端问题的通信系统，通信设备和通信方法。 通信装置1和3确定用于确定抑制载波输出的磁通密度TH 1以上的电磁波。 当没有检测到用于确定对载波输出的抑制的磁通密度TH 1或更大的电磁波时，通信装置1和3开始电磁波的输出。 通信装置2需要在比载波的输出抑制的磁通密度TH 1高的运转极限的载流子的磁通密度TH 2以上的电磁波的电磁波， 通过电磁波获取数据。 本发明应用于例如IC（集成电路）卡系统。
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公开(公告)号：US08818312B2
公开(公告)日：2014-08-26
申请号：US13614832
申请日：2012-09-13
IPC分类号： H04B1/06
CPC分类号： H04B5/0056 , H04B5/0031 , H04W74/0808
摘要： A method for a communication device includes determining whether a first radio frequency (RF) signal at a level of at least a first predetermined field threshold is detected. The method also includes generating a second RF signal at a level of at least a second predetermined field threshold greater than the first predetermined field threshold, when the communication device receives an instruction to generate the second RF signal and the determining determines that the first RF signal at the level of at least the first predetermined field threshold is not detected. The method further includes receiving a load modulated RF signal in response to the second RF signal.
摘要翻译： 一种用于通信设备的方法包括确定是否检测到处于至少第一预定场阈值的级别的第一射频（RF）信号。 该方法还包括当通信设备接收到产生第二RF信号的指令并且确定确定第一RF信号时，产生大于第一预定场阈值的至少第二预定场阈值的水平的第二RF信号 至少处于第一预定场阈值的水平。 该方法还包括响应于第二RF信号接收负载调制的RF信号。
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公开(公告)号：US20130005287A1
公开(公告)日：2013-01-03
申请号：US13614832
申请日：2012-09-13
CPC分类号： H04B5/0056 , H04B5/0031 , H04W74/0808
摘要： A method for a communication device includes determining whether a first radio frequency (RF) signal at a level of at least a first predetermined field threshold is detected. The method also includes generating a second RF signal at a level of at least a second predetermined field threshold greater than the first predetermined field threshold, when the communication device receives an instruction to generate the second RF signal and the determining determines that the first RF signal at the level of at least the first predetermined field threshold is not detected. The method further includes receiving a load modulated RF signal in response to the second RF signal.
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