Method and apparatus for verifying RFID tags
    92.
    发明授权
    Method and apparatus for verifying RFID tags 有权
    用于验证RFID标签的方法和装置

    公开(公告)号:US06784789B2

    公开(公告)日:2004-08-31

    申请号:US09349683

    申请日:1999-07-08

    IPC分类号: H04Q522

    摘要: An RFID tag verifier includes an RF interrogator that transmits a first and second interrogation signal each having a first operational characteristic that differs from the other by a known amount. The RF interrogator receives a first and second return signal corresponding to the respective interrogation signals. A processor determines a response of the RFID tag as defined by a second operational characteristic of the first and second return signals. The verifier can determine the signal strength of the return signal for varying strengths of the interrogation signal. Typically, a flat response is desired Additionally, or alternatively, the verifier can determine the response in terms of signal strength of the response signals for interrogation signals having different frequencies. In some applications frequency selectivity may be desirable. Additionally, or alternatively, the verifier can determine the response in terms of frequency for interrogation signals having varying strengths. A machine-readable symbol verifier can be coupled to, or formed as part of, the RFID verifier. A printer can be coupled to, or formed as part of, the RFID tag verifier.

    摘要翻译: RFID标签验证器包括RF询问器,RF询问器发送具有不同于已知量的第一操作特征的第一和第二询问信号。 RF询问器接收对应于各个询问信号的第一和第二返回信号。 处理器确定由第一和第二返回信号的第二操作特性定义的RFID标签的响应。 验证者可以确定询问信号的不同强度的返回信号的信号强度。 通常,需要平坦响应另外,或者,或者,验证者可以根据具有不同频率的询问信号的响应信号的信号强度确定响应。 在一些应用中,频率选择性可能是期望的。 另外或替代地,验证者可以根据具有不同强度的询问信号的频率来确定响应。 机器可读符号验证器可以耦合到RFID验证器,或者形成为RFID验证器的一部分。 打印机可以耦合到或者作为RFID标签验证器的一部分。

    Method and apparatus for accessing product information using bar code data
    93.
    发明授权
    Method and apparatus for accessing product information using bar code data 有权
    使用条形码数据访问产品信息的方法和装置

    公开(公告)号:US06669087B2

    公开(公告)日:2003-12-30

    申请号:US09785851

    申请日:2001-02-16

    IPC分类号: G06K1500

    摘要: A method and apparatus for providing a user product information via scanning of a machine readable symbology on a product. A symbology, for example a bar code, is scanned and the data therein passed into a URL which is used to present related product information to a user via the internet. The URL may directly link to the information or be a look up database for further redirection.

    摘要翻译: 一种通过扫描产品上的机器可读符号来提供用户产品信息的方法和装置。 扫描符号系统,例如条形码,并将其中的数据传递到用于经由因特网向用户呈现相关产品信息的URL。 URL可以直接链接到该信息,或者是查找数据库以进一步重定向。

    Hand-held, dual-mode asset tracking reader with light-activated switch
    94.
    发明授权
    Hand-held, dual-mode asset tracking reader with light-activated switch 失效
    带有启动开关的手持双模资产跟踪读卡器

    公开(公告)号:US06357662B1

    公开(公告)日:2002-03-19

    申请号:US09247165

    申请日:1999-02-09

    IPC分类号: G06K710

    CPC分类号: G06K7/10851

    摘要: One or more reading devices are disposed within a hollow case sized and shaped to be held in a user's hand. A supplemental switch is also disposed in the case and is manually activatable by a user, such as by the user's thumb. Logic disposed in the case is connected to a reading device and the supplemental switch for taking a first action when the switch is activated and taking a second action when it is not. The first and second actions may comprise first and second modes of operation of the reading device. When two or more reading devices are provided, the first and second actions may include reading operations of the first and second devices, respectively. Types of reading devices that may be incorporated into embodiments of the invention include bar code scanners, RF ID interrogators, and smart card scanners.

    摘要翻译: 一个或多个读取装置设置在中空壳体内,其尺寸和形状被保持在使用者的手中。 辅助开关还设置在壳体中并且可由用户例如由用户的拇指手动激活。 设置在壳体中的逻辑被连接到读取装置和辅助开关,用于当开关被激活时采取第一动作,并且当不是时采取第二动作。 第一和第二动作可以包括读取装置的第一和第二操作模式。 当提供两个或更多个读取装置时,第一和第二动作可以分别包括第一和第二装置的读取操作。 可以结合到本发明的实施例中的读取装置的类型包括条形码扫描器,RF ID询问器和智能卡扫描器。

    Spectral scanner employing light paths of multiple wavelengths for scanning objects, such as bar code symbols, and associated method
    95.
    发明授权
    Spectral scanner employing light paths of multiple wavelengths for scanning objects, such as bar code symbols, and associated method 有权
    光谱扫描仪采用多个波长的光路进行扫描对象,如条形码符号和相关方法

    公开(公告)号:US06345765B1

    公开(公告)日:2002-02-12

    申请号:US09608999

    申请日:2000-06-30

    IPC分类号: G06K710

    摘要: An optical system, such as a bar code scanner, illuminates an image with a multi-wavelength device. Under a first embodiment, a tunable laser is optically coupled with a prism or other wavelength separation device. As the laser beam wavelength varies, the transmission path through the prism changes, resulting in a scanning of the beam across an image. A photodetector captures light reflected from the image and sends it to a microprocessor for decoding. Under another embodiment, a broad band light source transmits light through a prism, thus shining a “rainbow” on the image. A spectrometer measures reflected light as a function of wavelength and sends the resultant signal to a microprocessor for decoding. Neither embodiment relies on moving parts to scan the image.

    摘要翻译: 诸如条形码扫描器的光学系统用多波长装置照射图像。 在第一实施例中,可调谐激光器与棱镜或其它波长分离装置光学耦合。 随着激光束波长的变化,通过棱镜的传输路径发生变化,导致横跨图像的扫描。 光电检测器捕获从图像反射的光并将其发送到微处理器进行解码。 在另一个实施例中,宽带光源通过棱镜传输光,从而在图像上照亮“彩虹”。 光谱仪测量作为波长的函数的反射光,并将所得到的信号发送到微处理器进行解码。 两个实施例都不依赖于移动部件来扫描图像。

    Error correction enhancement for code 93i and other machine-readable symbologies
    96.
    发明授权
    Error correction enhancement for code 93i and other machine-readable symbologies 有权
    代码93i和其他机器可读符号的纠错增强

    公开(公告)号:US06330972B1

    公开(公告)日:2001-12-18

    申请号:US09177679

    申请日:1998-10-22

    IPC分类号: G06K710

    摘要: A method and apparatus for error correction enhancement for decoding data collection symbols encoding data characters, special function characters, and error correction characters comprising: (i) reading a machine readable symbol; (ii) attempt to decode the symbol; (iii) selecting a group of n successive characters, where n is equal to the number of error correction characters in the symbol; (iv) attempt to solve an error correction equation while treating the group of characters as erasures; and (v) repeatedly selecting groups of successive characters and attempting to solve the error correction equation until the equation is solved or until there are no more groups of n successive characters. The method may further comprise: (vi) selecting a combination of n characters; (vii) attempting to solve the error correction equation while treating the combination of characters as erasures; and (viii) repeatedly selecting combinations of n characters and attempting to solve the error correction equation until the error correction equation solves, or until there are no more combinations of n characters, or until a timeout condition is reached.

    摘要翻译: 一种用于对用于解码数据字符,特殊功能字符和纠错字符的数据采集符号进行解码的方法和装置,包括:(i)读取机器可读符号; (ii)尝试解码符号; (iii)选择一组n个连续字符,其中n等于符号中的纠错字符的数量; (iv)尝试解决纠错方程,同时将字符组视为擦除; 和(v)重复选择连续字符组并试图求解纠错方程,直到解等式或直到没有更多的n个连续字符组为止。 该方法还可以包括:(vi)选择n个字符的组合; (vii)尝试在将字符组合处理为擦除时解决纠错方程; 和(viii)重复地选择n个字符的组合,并尝试解决纠错方程直到纠错方程解决,或者直到没有更多的n个字符的组合,或者直到达到超时条件。

    Performance optimized smart label printer
    97.
    发明授权
    Performance optimized smart label printer 有权
    性能优化的智能标签打印机

    公开(公告)号:US06246326B1

    公开(公告)日:2001-06-12

    申请号:US09305393

    申请日:1999-05-05

    IPC分类号: G08B2300

    摘要: A smart label printing system and method for printing smart labels is provided. The smart label printing system enables the expedited programming of the RFID tag component of the smart label so that delays due to the unequal time between printing the exterior of the smart label and encoding the smart label are avoided. The smart label printing system comprises a thermal printing unit to print the exterior of the smart label as well as an RF driver to program the RFID tag embedded inside the smart label. Methods are provided to increase overall throughput speed of the smart label, including prioritizing RFID tag data over exterior printing data in a RAM, compressing RFID tag data sent from a host computer, pre-loading fixed and regularly varying data, and predicting variable unknown data through the use of an artificial intelligence model. In addition, methods for uniquely arranging programming antennas and media pathways which act to speed up overall programming speed are also provided.

    摘要翻译: 提供了一种用于打印智能标签的智能标签打印系统和方法。 智能标签打印系统使得能够对智能标签的RFID标签组件进行快速编程,从而避免了在打印智能标签的外部和编码智能标签之间的时间不相等的延迟。 智能标签打印系统包括热敏打印单元,用于打印智能标签的外部,以及RF驱动器,用于对嵌入在智能标签内的RFID标签进行编程。 提供了提高智能标签总体吞吐速度的方法,包括将RFID标签数据优先于RAM中的外部打印数据,压缩从主计算机发送的RFID标签数据,预加载固定和规则变化的数据以及预测可变未知数据 通过使用人工智能模型。 此外,还提供了用于唯一布置编程天线和媒体路径以用于加速总体编程速度的方法。

    Machine-readable symbology and method and apparatus for printing and
reading same
    98.
    发明授权
    Machine-readable symbology and method and apparatus for printing and reading same 失效
    机器可读符号系统及其印刷和读取方法和装置

    公开(公告)号:US6012638A

    公开(公告)日:2000-01-11

    申请号:US914324

    申请日:1997-08-19

    摘要: A new bar code symbology in an exemplary embodiment employs three bars (and spaces) within nine modules, similar to Code 93. Fifty-three data characters are defined, including several special mode characters. By employing these special mode characters, together with certain routines, three symbol characters can represent two 8-bit bytes, or one 16-bit word. As a result, the symbology can efficiently encode 8-bit bytes for use in computer processing, or encode 16-bit character sets such as Unicode. Symbology encodes extended channel interpretation (ECI) numbers, provides multiple numeric compression modes, provides a structured append using a single mode character, as well as other features. Additionally, the symbology includes error correction, with a Special Features Flag character indicating use of error correction in a symbol.

    摘要翻译: 示例性实施例中的新的条形码符号系统在与代码93类似的九个模块内使用三个条(和空格)。定义了五十三个数据字符,包括几个特殊模式字符。 通过采用这些特殊模式字符,连同某些例程,三个符号字符可以表示两个8位字节,或一个16位字。 因此,符号系统可以有效地编码用于计算机处理的8位字节,或编码16位字符集,如Unicode。 符号学编码扩展通道解释(ECI)数字,提供多个数字压缩模式,使用单一模式字符以及其他功能提供结构化的追加。 此外,符号系统包括错误校正,特殊功能标志字符指示符号中使用错误校正。

    Thermal printhead with enhanced remote voltage sense capability
    99.
    发明授权
    Thermal printhead with enhanced remote voltage sense capability 失效
    具有增强的远程电压检测能力的热敏打印头

    公开(公告)号:US5714995A

    公开(公告)日:1998-02-03

    申请号:US715993

    申请日:1996-09-19

    IPC分类号: B41J2/345 B41J2/335

    CPC分类号: B41J2/345

    摘要: A thermal printhead formed on a substrate. The plurality of thermal print elements in the thermal printhead are formed in a linear array. Each of the plurality of thermal print elements is respectively connected to a plurality of common electrode traces and a plurality of ground electrode traces. The common electrode traces are switchably connected to a single common electrode and the ground electrode traces are connected to a single ground electrode. The common electrode is held at a common voltage and the ground electrode is held at a ground voltage. The electrical circuit includes at least one common remote sense electrode connected to the single common electrode and, optionally, at least one ground remote sense electrode connected to the single ground electrode.

    摘要翻译: 形成在基板上的热打印头。 热打印头中的多个热敏打印元件形成为线性阵列。 多个热敏打印元件中的每一个分别连接到多个公共电极迹线和多个接地电极迹线。 公共电极迹线可切换地连接到单个公共电极,并且接地电极迹线连接到单个接地电极。 公共电极保持在公共电压,接地电极保持接地电压。 电路包括连接到单个公共电极的至少一个公共远程感测电极和可选地连接到单个接地电极的至少一个接地远程感测电极。

    Method and apparatus for zero form loss on continuous form printing
    100.
    发明授权
    Method and apparatus for zero form loss on continuous form printing 失效
    连续印刷时零形损失的方法和装置

    公开(公告)号:US5581293A

    公开(公告)日:1996-12-03

    申请号:US47237

    申请日:1993-04-13

    摘要: An electrophotographic printer especially for bar code printing having an image transfer drum for placing an image onto a continuous form to be printed moved along a path by a form feed. A fusing roller is located downstream to fix the image on the form. The form is fed along a path past the transfer drum and fusing roller and after printing the last printed form is separated from the continuous form downstream of the image transfer drum leaving a leading edge on the unprinted form. The separation of the printed form is signaled to a controller which disables the image transfer device and fusing roller and causes the form feed to reverse moving the new leading edge upstream to a location immediately adjacent the image transfer drum. Various forms of printing, fixing the image onto the form, feeding the form and various types of forms such as barcoded labels on a carrier continuous form are disclosed. A method of printing and retracting a continuous form to utilize the unprinted portion of a form adjacent the last printed portion of a form at the end of a print run.

    摘要翻译: 特别是用于条形码打印的电子照相打印具有用于将图像放置在要被印刷的连续形式上的图像转印鼓,其通过成形进给沿着路径移动。 定影辊位于下游,以将图像固定在表面上。 该形式沿着经过转印鼓和定影辊的路径进给,并且在打印之后,最后打印的形式与图像转印鼓下游的连续形式分离,留下未打印形式的前缘。 打印形式的分离被发送到控制器,该控制器禁用图像传送装置和定影辊,并使成形进给将新的前缘上游反向移动到紧邻图像转印鼓的位置。 公开了各种形式的印刷,将图像固定在表格上,将形式和各种类型的形式,如条形码标签固定在载体连续形式上。 打印和缩回连续形式以在打印结束时使用与形式的最后打印部分相邻的形式的未打印部分的方法。