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    • 8. 发明申请
    • Using read lock capability for secure RFID authentication
    • 使用读取锁定功能进行安全的RFID认证
    • US20080001724A1
    • 2008-01-03
    • US11495673
    • 2006-07-31
    • Mohammad SoleimaniJoseph White
    • Mohammad SoleimaniJoseph White
    • H04Q5/22
    • H04W12/06H04L63/083H04W8/26H04W74/00
    • Methods, systems, and apparatuses for preventing unauthorized reading of identifying data stored in tags are described. A secure access identification number and associated read lock password are received. The secure access identification number and associated read lock passcode are transferred to the tag. The tag stores the secure access identification number and read lock passcode. A read lock command is transmitted to the tag. The tag is locked from being read for selected information, such as identifying information and user information, by the read lock command. In a further aspect, the secure access identification number is read from the read locked tag. The secure access identification number is associated with a passcode. The passcode is transmitted to the read locked tag. The tag disables the read lock if the passcode matches the previously received read lock password.
    • 描述用于防止未经授权读取存储在标签中的识别数据的方法,系统和装置。 接收到安全的访问标识号和相关的读锁密码。 安全访问标识号和相关的读锁密码被传送到标签。 该标签存储安全访问标识号和读取锁定密码。 读取锁定命令被发送到标签。 通过读取锁定命令,锁定标签被读取用于所选择的信息,例如识别信息和用户信息。 在另一方面,从读取锁定的标签中读取安全访问标识号。 安全访问标识号与密码相关联。 密码被传送到读锁定标签。 如果密码与以前收到的读锁密码相匹配,则标签会禁用读锁。
    • 9. 发明授权
    • Method and apparatus for joint timing synchronization and frequency offset estimation
    • 联合定时同步和频偏估计的方法和装置
    • US06363131B1
    • 2002-03-26
    • US09109798
    • 1998-07-02
    • Bassel F. BeidasYezdi F. AntiaMohammad Soleimani
    • Bassel F. BeidasYezdi F. AntiaMohammad Soleimani
    • H04L700
    • H04L7/042H04L27/22H04L2027/0065H04L2027/0093
    • A burst analyzer is useful in a digital communication system in which a signal burst has a plurality of reference segments distributed within the signal burst for transmission of a plurality of reference signals. The burst analyzer includes a filter that compares the received signal, for each reference segment thereof, with each reference signal offset by one of a plurality of time offsets to generate correlation data. The burst analyzer then determines, for each reference segment of the signal burst, a maximum correlation value from the correlation data for each time offset. Then the burst analyzer determines the time offset at which a sum of the maximum correlation values, over the plurality of reference segments, is a maximum. The burst analyzer jointly generates a frequency domain representation of the correlation data associated with the time offset at which the maximum correlation sum is a maximum, and then determines a frequency at which the frequency domain representation is a maximum.
    • 突发分析器在数字通信系统中是有用的,其中信号突发具有分布在信号突发内的多个参考段,用于传输多个参考信号。 突发分析器包括一个滤波器,其对于每个参考信号段的接收信号与多个时间偏移中的一个偏移量的每个参考信号进行比较以产生相关数据。 脉冲串分析器然后根据每个时间偏移的相关数据确定信号脉冲串的每个参考段的最大相关值。 然后,脉冲串分析器确定在多个参考段上的最大相关值之和为最大值的时间偏移。 突发分析器共同地产生与最大相关和为最大的时间偏移相关联的相关数据的频域表示,然后确定频域表示为最大的频率。