会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 45. 发明授权
    • RFID system with multiple tag transmit frequencies
    • 具有多个标签发射频率的RFID系统
    • US08937531B2
    • 2015-01-20
    • US13532821
    • 2012-06-26
    • Donald Saul RimaiMark P. Hinman
    • Donald Saul RimaiMark P. Hinman
    • H04Q5/22
    • G06K7/10069
    • An RFID system has an active tag with one antenna inside, and one outside, an RF-blocking enclosure having a port with a selected shortest dimension. The RFID reader is located outside the enclosure and uses a selected RF read frequency range. The RFID tag simultaneously transmits on a plurality of frequencies corresponding to respective wavelengths smaller than the selected shortest dimension, so that a respective beat frequency is defined between two of the frequencies. The beat frequency is within the selected RF uplink frequency range. The tag transmits a first signal at a first one of the plurality of frequencies using the interior antenna and a second signal at a second, different one of the plurality of frequencies using the exterior antenna.
    • RFID系统具有内部具有一个天线的有源标签,以及一个外部的具有选定的最短尺寸的端口的RF阻挡外壳。 RFID读取器位于机箱外部,并使用选定的RF读取频率范围。 RFID标签同时在对应于小于所选择的最短维度的波长的多个频率上发送,从而在两个频率之间定义相应的拍频。 节拍频率在选定的RF上行链路频率范围内。 标签使用内部天线以多个频率中的第一个频率发射第一信号,并使用外部天线以第二个不同的一个频率发送第二信号。
    • 46. 发明授权
    • Method for card-reading anti-collision with automatic frequency hopping
    • 自动跳频卡读卡防冲突方法
    • US08698601B2
    • 2014-04-15
    • US13102816
    • 2011-05-06
    • Yingtong SunJianhui Liu
    • Yingtong SunJianhui Liu
    • H04Q5/22
    • G06K7/0008G06K7/10069H04W74/08
    • A method for card-reading anti-collision with automatic frequency hopping is provided, which is used for a system in which a card reader simultaneously reads a plurality of cards in radio frequency identification technologies. The method comprises: both the card reader and the cards to be read are configured to have an automatic frequency-sweep function and a function of hopping from a current channel to another channel, and to store access addresses and transaction addresses; when the card reader is in a frequency-hopping card-seeking state, it is in an n-channel frequency-hopping working state, in which, the access address of each channel is the same, and the card reader reads the cards by means of hopping frequencies in a sequence iteratively through n channels. When the card reader detects that two or more cards collide, the card reader sends a command of random frequency hopping, making all the conflicting cards to hop to other channels randomly and to wait to access those channels. The beneficial effects of said method includes: it can quickly realize a card-reading anti-collision mechanism and improve the card-reading speed.
    • 提供了一种用于读卡自动跳频抗冲突的方法,其用于读卡器同时在射频识别技术中读取多张卡的系统。 该方法包括:读卡器和要读取的卡都被配置为具有自动频率扫描功能和从当前频道跳到另一个频道的功能,并且存储访问地址和交易地址; 当读卡器处于跳频卡寻求状态时,它处于n信道跳频工作状态,其中每个信道的访问地址相同,并且读卡器通过装置读取卡 跳频通过n个通道迭代。 当读卡器检测到两个或多个卡碰撞时,读卡器发送随机跳频命令,使所有冲突卡随机跳到其他通道并等待访问这些通道。 所述方法的有益效果包括:可以快速实现读卡防冲突机制,提高读卡速度。