Detection signal generator circuit for an RFID reader
    111.
    发明授权
    Detection signal generator circuit for an RFID reader 有权
    用于RFID读取器的检测信号发生器电路

    公开(公告)号:US07782209B2

    公开(公告)日:2010-08-24

    申请号:US11396290

    申请日:2006-03-31

    IPC分类号: G08B13/14

    摘要: An RFID transponder detector is provided having a coupled oscillator system. Coupled first and second LC of the system produce a detection signal each time a combination of pulses is applied to the LC pairs. Application of the pulses is repeated periodically to produce a sequence for detection signals having two different first and second detection frequencies. Transmitting the sequence of detection signals results in corresponding first and second response signals having the first and second detection frequencies at the LC pairs. Values of a preselected detection parameter for the detection signals are compared to the values of the detection parameter for the response signals to determine if a transponder having a transponder resonant frequency corresponding to the first or second detection frequency is present in a proximal space of the transponder detector.

    摘要翻译: 提供了具有耦合振荡器系统的RFID应答器检测器。 每当脉冲组合施加到LC对时,系统的耦合的第一和第二LC产生检测信号。 周期性重复脉冲的应用以产生具有两个不同的第一和第二检测频率的检测信号的序列。 发送检测信号的序列导致在LC对具有第一和第二检测频率的对应的第一和第二响应信号。 将检测信号的预选检测参数的值与响应信号的检测参数的值进行比较,以确定具有与第一或第二检测频率相对应的应答器谐振频率的应答器是否存在于应答器的近端空间中 探测器。

    METHOD FOR COMPUTING THE ENTROPIC VALUE OF A DYNAMICAL MEMORY SYSTEM
    113.
    发明申请
    METHOD FOR COMPUTING THE ENTROPIC VALUE OF A DYNAMICAL MEMORY SYSTEM 审中-公开
    计算动态记忆系统熵值的方法

    公开(公告)号:US20090135817A1

    公开(公告)日:2009-05-28

    申请号:US12120075

    申请日:2008-05-13

    IPC分类号: H04L12/56

    摘要: Methods, devices, and systems are provided for optimizing the dissemination of information in an access control system. More specifically, there are provided various mechanisms to increase the efficiency with which system updates and other types of information are spread throughout an access control system having at least one non-networked reader.

    摘要翻译: 提供了方法,设备和系统,用于优化访问控制系统中信息的传播。 更具体地,提供了用于提高系统更新和其他类型的信息在具有至少一个非联网读取器的访问控制系统中传播的效率的各种机制。

    Tuning an RFID reader with electronic switches
    114.
    发明授权
    Tuning an RFID reader with electronic switches 有权
    调整带有电子开关的RFID阅读器

    公开(公告)号:US07539465B2

    公开(公告)日:2009-05-26

    申请号:US11581801

    申请日:2006-10-16

    申请人: Ralph W. Quan

    发明人: Ralph W. Quan

    IPC分类号: H04B1/04 H04B7/00

    摘要: A reader for an RFID system includes a signal driver for generating an excitation signal and a resonant circuit having an adjustable resonant circuit capacitance for retuning the resonant circuit in response to detuning. The resonant circuit has a capacitance tuning circuit which includes a fine-tuning capacitor having a fine-tuning capacitance and a fine-tuning capacitor switch having an open position and a closed position. The fine-tuning capacitance is added to the adjustable resonant circuit capacitance when the fine-tuning capacitor switch is in the closed position and is removed from the adjustable resonant circuit capacitance when the fine-tuning capacitor switch is in the open position.

    摘要翻译: 用于RFID系统的读取器包括用于产生激励信号的信号驱动器和具有可调节谐振电路电容的谐振电路,用于响应于失谐而重新谐振谐振电路。 谐振电路具有电容调谐电路,其包括具有微调电容的微调电容器和具有打开位置和闭合位置的微调电容器开关。 当微调电容器开关处于闭合位置时,微调电容被添加到可调谐谐振电路电容,并且当微调电容器开关处于打开位置时,微调电容被从可调谐谐振电路电容中移除。

    ACCESS CONTROL DEVICE
    115.
    发明公开

    公开(公告)号:US20240355163A1

    公开(公告)日:2024-10-24

    申请号:US18687417

    申请日:2022-09-21

    申请人: ASSA ABLOY AB

    IPC分类号: G07C9/29

    CPC分类号: G07C9/29

    摘要: It is provided an electronic lock for controlling access to a restricted physical space. The electronic lock comprises: a first credential interface for accepting a credential from a user for evaluating whether access for the user should be granted; and a second credential interface for accepting a credential from a user for evaluating whether access for the user should be granted. The first credential interface is configured to be activated when the user causes an interaction with the first credential interface, without activating any other credential interfaces. The second credential interface is configured to be activated when a user causes an interaction with the second credential interface, without activating any other credential interfaces.

    ENABLING ACCESS USING A TEMPORARY PASSCODE
    117.
    发明公开

    公开(公告)号:US20240265760A1

    公开(公告)日:2024-08-08

    申请号:US18258654

    申请日:2021-12-16

    申请人: ASSA ABLOY AB

    IPC分类号: G07C9/33 G07C9/00

    摘要: It is provided a method for enabling access, using a temporary passcode (25. 25a-f), to a physical space (16) secured by an electronic lock (12). The method is performed in a passcode provider (1). The method comprises: synchronising (40) with the electronic lock (12) to align times for temporary passcode generation: receiving (42) a signal to provide a temporary passcode for unlocking the electronic lock: determining (44) a temporary passcode, the temporary passcode being valid only until an end time at the electronic lock (12); and providing (46) the temporary passcode for forwarding to a temporary passcode recipient.

    Configuring a target device
    118.
    发明授权

    公开(公告)号:US12047229B2

    公开(公告)日:2024-07-23

    申请号:US17777374

    申请日:2020-11-18

    申请人: ASSA ABLOY AB

    摘要: It is provided a method for configuring a target device. The method comprises the steps of: transmitting a configuration request message to the target device, the configuration request message comprising a configuration request and a request signature, wherein the request signature is based on the configuration request; receiving a configuration response message from the target device, the configuration response message comprising a configuration response and a response signature, wherein the response signature is based on the configuration response and the request signature; verifying the response signature to determine whether the configuration response message is valid, based on the configuration response, the request signature and a public key for the target device; and transmitting a configuration commit message to the target device only when the configuration response message is valid, the configuration commit message comprising a configuration commit indicator and a commit signature.

    LOCK DEVICE FOR AN ELECTRONIC LOCKING SYSTEM, ELECTRONIC LOCKING SYSTEM AND METHOD

    公开(公告)号:US20240218703A1

    公开(公告)日:2024-07-04

    申请号:US18598124

    申请日:2024-03-07

    申请人: ASSA ABLOY AB

    摘要: Lock device for an electronic locking system, the lock device comprising an input member arranged to rotate about an input rotational axis; an output member arranged to rotate about an output rotational axis; an energy harvesting arrangement configured to generate electric energy from rotation of the input member in a first direction about the input rotational axis; and a selective transfer device movable between a locking state, in which the output member cannot be rotated about the output rotational axis by means of rotation of the input member about the input rotational axis, and an unlocking state, in which the output member can be rotated about the output rotational axis by means of rotation of the input member in the first direction about the input rotational axis; wherein the transfer device is powered by the energy harvesting arrangement. An electronic locking system and a method are also provided.