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1. 发明授权

US07419096B2 RFID joint acquisition of time sync and timebase 有权
标题翻译： RFID联合获取时间同步和时基
公开(公告)号：US07419096B2
公开(公告)日：2008-09-02
申请号：US11136948
申请日：2005-05-24
申请人： Aanand Esterberg , William T. Colleran , Scott Anthony Cooper
发明人： Aanand Esterberg , William T. Colleran , Scott Anthony Cooper
IPC分类号： G06K7/08 , G06K19/00 , G06K19/06 , H04Q5/22 , G08B13/14
CPC分类号： G06K7/0008
摘要： Systems and methods to determine timebase and timing (i.e., time sync) of received signals in RFID systems. Multiple matched filters corresponding to multiple timebases are used to receive the preambles of signals received from RFID tags. The multiple matched filters define a range of expected timebases of the received signals. The matched filter with the maximum output signal peak is used to derive the timebase and timing of the received signal. Viterbi techniques can be used in determining the timebase and timing to incorporate a portion of the data signal in addition to the preamble. Reconfigurable matched filters can be used so that after a preliminary timebase is determined as described above, the matched filters can be reconfigured to define a new smaller range centered about the preliminary timebase. This allows the timebase to be determined with finer resolution when another preamble portion is received.
摘要翻译：确定RFID系统中接收信号的时基和定时（即，时间同步）的系统和方法。对应于多个时基的多个匹配滤波器被用于接收从RFID标签接收的信号的前导码。多个匹配滤波器定义了接收信号的预期时基的范围。具有最大输出信号峰值的匹配滤波器用于导出接收信号的时基和定时。除了前导码之外，维特比技术可用于确定并入数据信号的一部分的时基和定时。可以使用可重配置匹配滤波器，使得在如上所述确定初步时基之后，可以重新配置匹配滤波器以定义以初步时基为中心的新的较小范围。这允许当接收另一个前同步码部分时，以更精细的分辨率确定时基。

2. 发明授权

US07382257B2 Single RF oscillator single-side band modulation for RFID readers with frequency translation and filtering 有权
标题翻译：用于具有频率转换和滤波的RFID读取器的单RF振荡器单边带调制
公开(公告)号：US07382257B2
公开(公告)日：2008-06-03
申请号：US11073292
申请日：2005-03-04
申请人： Michael H. Thomas , Scott Anthony Cooper , Aanand Esterberg
发明人： Michael H. Thomas , Scott Anthony Cooper , Aanand Esterberg
IPC分类号： G08B13/14
CPC分类号： G06K7/0008
摘要： A transmitter shifts a baseband data signal having a bandwidth of 2ωM using a tone signal having a frequency ωM, which centers a sideband of the data signal at zero frequency. The transmitter then filters the shifted signal to filter out the non-centered sideband, and then adds the tone signal to form a composite signal. The transmitter upconverts the composite signal during a first operational mode using a RF signal having a frequency ωC equal to a center frequency of a channel. In a second operational mode, the transmitter upconverts a DC level using the same RF signal. The upconverted DC level can be used as a continuous wave carrier signal having a frequency ωC. The transmitter has a single RF oscillator to output both a SSB signal centered at frequency ωC during the first mode and a carrier signal of frequency ωC during the second mode.
摘要翻译：发射机使用具有频率ωM M M的音调信号来移动具有2omega M带宽的基带数据信号，该音调信号使数据信号的边带以零频率居中。然后，发射机对移位的信号进行滤波，以滤除非中心边带，然后将音调信号相加以形成复合信号。发射机在第一操作模式期间使用具有等于信道的中心频率的频率ω-C的RF信号来上变频合成信号。在第二种操作模式中，发射器使用相同的RF信号上变频DC电平。上转换的DC电平可以用作具有频率ωC的连续波载波信号。发射机具有单个RF振荡器，以在第一模式期间输出以频率ω-C'为中心的SSB信号，并且在第二模式期间输出频率ωC'C的载波信号。

3. 发明授权

US07107022B1 Single RF oscillator single-side band modulation for RFID readers using tone insertion during reader reception 有权
标题翻译：用于RFID读取器的单RF振荡器单边带调制器，在读卡器接收期间使用音频插入
公开(公告)号：US07107022B1
公开(公告)日：2006-09-12
申请号：US11073340
申请日：2005-03-04
申请人： Michael H. Thomas , Scott Anthony Cooper , Aanand Esterberg
发明人： Michael H. Thomas , Scott Anthony Cooper , Aanand Esterberg
IPC分类号： H04B1/68
CPC分类号： H04B1/68 , H03C1/60 , H03C2200/007
摘要： A transmitter upconverts a SSB data signal during a first operational mode using a RF upconverting signal having a frequency that is offset from a center frequency of a channel (ωC) by an amount that depends on the data signal's SSB bandwidth (ωM). In a second operational mode, the transmitter upconverts a tone signal having a frequency ωM using the same RF upconverting signal. The upconverted tone signal can be used as a continuous wave (CW) carrier signal having a frequency ωC. The transmitter has a single RF oscillator to output both a SSB signal centered at frequency ωC during the first mode and a carrier signal of frequency ωC during the second mode.
摘要翻译：发射机在第一操作模式期间使用具有偏离信道的中心频率（ω）的频率的RF上变频信号来上变频SSB数据信号，该频率取决于数据信号 SSB带宽（Ω-M）。在第二操作模式中，发射器使用相同的RF上变频信号来上变频具有ωωM的频率信号。上转换的音调信号可以用作具有频率ωC的连续波（CW）载波信号。发射机具有单个RF振荡器，以在第一模式期间输出以频率ω-C'为中心的SSB信号，并且在第二模式期间输出频率ωC'C的载波信号。

4. 发明授权

US08390425B1 RFID reader systems with double conversion and methods 有权
标题翻译： RFID读写器系统具有双重转换和方法
公开(公告)号：US08390425B1
公开(公告)日：2013-03-05
申请号：US11742650
申请日：2007-05-01
申请人： Scott Anthony Cooper , Kurt Eugene Sundstrom
发明人： Scott Anthony Cooper , Kurt Eugene Sundstrom
IPC分类号： G05B23/02 , H04Q5/22 , H04B7/14 , G06F7/00 , H03D3/00
CPC分类号： G06K7/0008
摘要： RFID readers, reader systems, and methods are provided that utilize double conversion for received tag response signals. A digitized signal is derived from the tag response signal by first shifting the response signal to about DC. The components of the digitized signal are then up converted and down converted and filtered such that only components around DC remain. The up converted and down converted signals may then be compared and one selected or the two combined after weighting to enhance demodulation and reduce circuit complexity.
摘要翻译：提供RFID读取器，读取器系统和方法，其对于接收到的标签响应信号使用双重转换。通过首先将响应信号移动到约DC，从标签响应信号导出数字化信号。然后，数字化信号的分量被上变频和下变频和滤波，使得仅在DC周围的分量保持不变。然后可以比较上变频和下变频信号，一个被选择或两个加权后组合以增强解调并降低电路复杂度。

5. 发明授权

US07246751B2 RFID tags calibrating backscattering period also for non-integer divide ratios 有权
标题翻译： RFID标签校准后向散射周期也用于非整数分频比
公开(公告)号：US07246751B2
公开(公告)日：2007-07-24
申请号：US11258521
申请日：2005-10-24
申请人： Christopher J. Diorio , Todd E. Humes , Scott Anthony Cooper
发明人： Christopher J. Diorio , Todd E. Humes , Scott Anthony Cooper
IPC分类号： G06K19/06
CPC分类号： G06K19/0723
摘要： An RFID tag that receives a calibration instruction from a reader can determine the basic backscatter period of the symbols to be backscattered. According to some embodiments, when the instruction includes a calibration feature that is to be divided by a divide ratio, the tag measures the duration of the feature in terms of numbers of internal pulses, resulting in a binary L-number. Then at least two versions of the L-number (PR1-number, PR2-number) are combined, so as to yield the effective result of the division alternately, even when the divide ratio is a non-integer. The backscatter period can then be determined from the BP-number and the period of the internal pulses.
摘要翻译：从读取器接收校准指令的RFID标签可以确定要反向散射的符号的基本反向散射周期。根据一些实施例，当指令包括要由分频比除除的校准特征时，标签以内部脉冲数量来测量特征的持续时间，得到二进制L数。然后组合L个号码（PR 1号，PR 2号码）的至少两个版本，以便即使分频比是非整数也可以交替地产生除法的有效结果。然后可以根据BP号和内部脉冲的周期来确定反向散射周期。

6. 发明授权

US07472835B2 RFID system components implementing adjusted backscatter calculations and methods 有权
标题翻译： RFID系统组件实现调整后向散射计算和方法
公开(公告)号：US07472835B2
公开(公告)日：2009-01-06
申请号：US11114614
申请日：2005-04-25
申请人： Christopher J. Diorio , Kurt E. Sundstrom , Scott Anthony Cooper , Todd E. Humes
发明人： Christopher J. Diorio , Kurt E. Sundstrom , Scott Anthony Cooper , Todd E. Humes
IPC分类号： G06K19/06
CPC分类号： G06K19/0723 , G06K7/0008 , H03J1/0058
摘要： RFID system components, such as readers and tags, communicate by a reader transmitting waveforms that encode a calibration symbol and a divide ratio. Tags include a processor to determine a backscatter link period result by dividing a count value representing the calibration symbol by the divide ratio and adding an adjustment. Tags modulate a backscatter waveform that includes symbols using a link period determined from the result.
摘要翻译：诸如读取器和标签的RFID系统组件由读取器传送，该读取器发送编码校准符号和分频比的波形。标签包括通过将表示校准符号的计数值除以除法比率并且添加调整来确定反向散射链路周期结果的处理器。标签使用从结果确定的链路周期调制包括符号的反向散射波形。

7. 发明授权

US07307529B2 RFID tags with electronic fuses for storing component configuration data 有权
标题翻译：带有电子保险丝的RFID标签，用于存储组件配置数据
公开(公告)号：US07307529B2
公开(公告)日：2007-12-11
申请号：US11016546
申请日：2004-12-17
申请人： Vadim Gutnik , John D. Hyde , David D. Dressler , Alberto Pesavento , Ronald A. Oliver , Scott Anthony Cooper , Kurt Eugene Sundstrom
发明人： Vadim Gutnik , John D. Hyde , David D. Dressler , Alberto Pesavento , Ronald A. Oliver , Scott Anthony Cooper , Kurt Eugene Sundstrom
IPC分类号： G08B13/14
CPC分类号： G11C17/18 , G06K19/0723 , G06K19/073
摘要： An RFID tag has a fuse that is adapted to store configuration data in a way that survives loss of power. The fuse can be one time programmable or many times programmable, and be implemented with a non-volatile memory. The configuration data becomes available to an operational component of the tag, such as at power up, controlling its performance.
摘要翻译： RFID标签具有适于以丧失功率的方式存储配置数据的熔丝。保险丝可以是一次可编程或多次可编程，并且可以用非易失性存储器实现。配置数据可用于标签的操作组件，例如上电时，控制其性能。

8. 发明授权

US07501953B2 RFID readers transmitting preambles denoting communication parameters and RFID tags interpreting the same and methods 有权
标题翻译： RFID读取器传输表示通信参数的前导码和解释相同的方法的RFID标签
公开(公告)号：US07501953B2
公开(公告)日：2009-03-10
申请号：US10890976
申请日：2004-07-13
申请人： Christopher J. Diorio , Scott Anthony Cooper
发明人： Christopher J. Diorio , Scott Anthony Cooper
IPC分类号： H04Q5/22 , H04Q1/30 , G08B13/14 , G08B5/22 , H04L7/00
CPC分类号： G06K7/10297 , G06K7/0008
摘要： RFID readers transmit data to query RFID tags. Before transmitting the data, the RFID readers also transmit special preambles that inform of parameters of communication that are to be used. RFID tags decode the preamble, and adjust accordingly to optimize the communication. The preambles of the invention start with a delimiter that has a substantially constant duration regardless of the communication parameters that will be used, such as transmission data rate.
摘要翻译： RFID读取器传输数据以查询RFID标签。在发送数据之前，RFID阅读器还传送特殊的前导码，通知要使用的通信参数。 RFID标签对前导码进行解码，并进行相应调整以优化通信。本发明的前序开始于具有基本上恒定的持续时间的分隔符，而与要使用的通信参数无关，例如传输数据速率。

9. 发明授权

US07183926B2 Adaptable bandwidth RFID tags 有权
标题翻译：适应带宽RFID标签
公开(公告)号：US07183926B2
公开(公告)日：2007-02-27
申请号：US10823991
申请日：2004-04-13
申请人： Christopher J. Diorio , Scott Anthony Cooper , John D. Hyde , Amir Sarajedini , Kurt Eugene Sundstrom
发明人： Christopher J. Diorio , Scott Anthony Cooper , John D. Hyde , Amir Sarajedini , Kurt Eugene Sundstrom
IPC分类号： H04B1/06 , H04B7/00 , G01S13/75
CPC分类号： G06K19/0723
摘要： RFID tags, tag circuits, and methods adapting the reception bandwidth. A tag has a decoder for decoding a first received wireless signal subject to a reception bandwidth setting. The tag also has a selector switch for transitioning to a different setting, such as by switching to using a different filter. A subsequently received second signal is decoded subject to the new reception bandwidth setting.
摘要翻译： RFID标签，标签电路和适应接收带宽的方法。标签具有解码器，用于对接收带宽设置的第一接收无线信号进行解码。标签还具有用于转换到不同设置的选择器开关，例如通过切换到使用不同的滤镜。经过新的接收带宽设置，随后接收的第二信号被解码。

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