System and method for radio frequency tag group select
    3.
    发明申请
    System and method for radio frequency tag group select 有权
    射频标签组选择的系统和方法

    公开(公告)号:US20050168348A1

    公开(公告)日:2005-08-04

    申请号:US10979866

    申请日:2004-11-02

    摘要: A master entity is capable of broadcasting commands to a plurality of three-state-selection machine slaves. Transitions from one state to another are effected on instruction from commands in a sequence of commands broadcast from the master. Slaves move to another state when they satisfy a primitive condition specified in the command. By moving slaves among the three sets, a desired subset of slaves can be isolated in one of the sets. This desired subset of slaves then can be moved to one of the states that is unaffected by commands that cause the selection of other desirable subsets of slaves. In the embodiments of the incorporated U.S. Pat. No. 5,673,037, certain subgroups of radio frequency (RF) tags are selected for querying, communicating, and/or identifying by commands from a base station. Commands from the base station may cause the tags to change state which either prevents or allows a given tag to participate in an identification process. In this way, a given subgroup(s) of tags meeting certain criteria can be selected for querying, communicating, and/or identifying.

    摘要翻译: 主实体能够向多个三状态选择机器从站广播命令。 从一个状态到另一个状态的转换是根据从主机广播的命令序列中的命令的指令来实现的。 当它们满足命令中指定的原始条件时,从机将移动到另一个状态。 通过在三组中移动从属,可以在其中一个组中隔离所需的从属子集。 然后,所需的从属子集可以移动到不受引起选择其他所需从属子集的命令影响的状态之一。 在结合的美国专利 选择射频(RF)标签的某些子组用于通过来自基站的命令进行查询,通信和/或识别。 来自基站的命令可能导致标签改变状态,这阻止或允许给定的标签参与识别过程。 以这种方式,可以选择满足特定标准的给定子组(用于查询,通信和/或识别)。

    Diode receiver for radio frequency transponder
    5.
    发明申请
    Diode receiver for radio frequency transponder 有权
    射频应答器二极管接收器

    公开(公告)号:US20050001724A1

    公开(公告)日:2005-01-06

    申请号:US10770341

    申请日:2004-02-02

    摘要: A passive radio frequency transponder (RF tag) having a diode rectifier receiver circuit outside the tag power rectification circuit, the tag power rectification circuit supplying power to the electronics of the RF tag. An additional innovative low current circuit protect the signal capacitor from overvoltage produced by the signal diode. An innovative circuit also clips the signal and sharpens it. An innovative low current circuit is used as a comparator to sharpen the signal pulses.

    摘要翻译: 一种在标签电源整流电路外部具有二极管整流器接收器电路的无源射频转发器(RF标签),标签电力整流电路向RF标签的电子设备供电。 额外的创新的低电流电路保护信号电容免受信号二极管产生的过压。 创新的电路也会剪辑信号并使其变亮。 创新的低电流电路用作比较器来锐化信号脉冲。

    Optoelectronic reader and method for reading machine-readable symbols
    6.
    发明申请
    Optoelectronic reader and method for reading machine-readable symbols 审中-公开
    光电阅读器和阅读机读符号的方法

    公开(公告)号:US20070063043A1

    公开(公告)日:2007-03-22

    申请号:US11520447

    申请日:2006-09-12

    申请人: Harley Heinrich

    发明人: Harley Heinrich

    IPC分类号: G06K7/10

    CPC分类号: G06K7/10722 G06K7/10732

    摘要: An optoelectronic reader for reading machine-readable symbols such as barcode symbols employs an optical assembly to focus a non-Gaussian image on an image sensor. The optical assembly may include a substantially diffraction free optical element, such as an annular slit aperture or a conical lens element, for example a conical refracting surface or axicon lens element.

    摘要翻译: 用于读取诸如条形码符号的机器可读符号的光电读取器使用光学组件来将非高斯图像聚焦在图像传感器上。 光学组件可以包括基本上无衍射的光学元件,例如环形狭缝孔或锥形透镜元件,例如锥形折射表面或旋转透镜元件。

    RFID readers with encapsulating commands
    7.
    发明授权
    RFID readers with encapsulating commands 有权
    具有封装命令的RFID读写器

    公开(公告)号:US08698629B1

    公开(公告)日:2014-04-15

    申请号:US13164593

    申请日:2011-06-20

    IPC分类号: G08B13/14 H04Q5/22 H02J13/00

    摘要: Radio Frequency Identification (RFID) readers may transmit one or more encapsulated commands within the payload of an encapsulating command. An encapsulated command includes at least a command code and an instruction. A reader may instruct a tag to store the encapsulated command(s) or instruction(s) for later execution. A sequence of encapsulated commands may be contained within one encapsulating command or spread across multiple encapsulating commands. The sequence of encapsulated commands, or the sequence of instructions associated with the encapsulated commands, may form a program. The reader may cause the tag to execute the instructions or program upon receipt, upon a trigger event, serially or in parallel, and/or may cause the tag to modify the instructions or program by adjusting parameters. The reader may later instruct a tag to execute the instructions or program via another command which, in some cases, may be sent prior to tag singulation.

    摘要翻译: 射频识别(RFID)读取器可以在封装命令的有效载荷内传送一个或多个封装的命令。 封装的命令至少包括命令代码和指令。 读取器可以指示标签存储封装的命令或指令以供稍后执行。 封装命令的序列可以包含在一个封装命令中或分散在多个封装命令之间。 封装命令的顺序或与封装命令相关联的指令序列可以形成程序。 读取器可以使得标签在接收到触发事件时,串行或并行地执行指令或程序,和/或可以通过调整参数来使标签修改指令或程序。 读者可以稍后指示标签通过另一命令来执行指令或程序,该命令在某些情况下可以在标签分割之前被发送。

    Encapsulating commands for RFID tags

    公开(公告)号:US08669872B1

    公开(公告)日:2014-03-11

    申请号:US13164578

    申请日:2011-06-20

    IPC分类号: G08B13/14

    摘要: Radio Frequency Identification (RFID) tags may receive one or more encapsulated commands within the payload of an encapsulating command. An encapsulated command includes at least a command code and an instruction. A tag may store the encapsulated command(s) or the instruction portion of the encapsulated command(s) for later execution. A sequence of encapsulated commands may be contained within one encapsulating command or spread across multiple encapsulating commands. The sequence of encapsulated commands, or the sequence of instructions associated with the encapsulated commands, may form a program. The tag may execute the instructions or program upon receipt, upon a trigger event, serially or in parallel, and/or may modify the instructions or program by adjusting parameters. The tag may later be told by a reader to execute the instructions or program via another command which, in some cases, may be sent prior to tag singulation.

    Laser barcode scanner employing heterodyning techniques
    9.
    发明授权
    Laser barcode scanner employing heterodyning techniques 有权
    激光条形码扫描仪采用外差技术

    公开(公告)号:US08087589B2

    公开(公告)日:2012-01-03

    申请号:US12254733

    申请日:2008-10-20

    IPC分类号: G06K7/10

    CPC分类号: G06K7/10584 G06K7/10732

    摘要: A system and method of scanning machine-readable symbols with a signal source modulated by a local oscillator to create by heterodyne mixing upconverted signals at the sum and difference frequencies of the local oscillator frequency and the frequency of the time-varying reflectance off the scanned symbols is disclosed. The reflected heterodyned signal is detected by a receiver. Ambient noise is filtered out from the reflected signal, and the received signal at the sum and difference frequencies is processed.

    摘要翻译: 一种用本地振荡器调制的信号源扫描机器可读符号的系统和方法,以通过外差来混合在本地振荡器频率的和频和差分频率上的上变频信号以及扫描符号上的时变反射率的频率 被披露。 反射的外差信号由接收机检测。 从反射信号中滤除环境噪声,处理和差和差频的接收信号。