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    51.
    发明专利
    未知

    公开(公告)号：DE60216209T2

    公开(公告)日：2007-09-13

    申请号：DE60216209

    申请日：2002-09-25

    Applicant: SYMBOL TECHNOLOGIES INC

    Inventor： WILLINS BRUCE A ,  GOREN DAVID ,  VOLKOMMER RICHARD M

    IPC: G01S5/06 ,  G01S15/46 ,  G01S5/22 ,  H04R5/033

    Abstract: An object locator system (100) generates an audio signal as if emanating from the object (118) as a user (102) varies angular orientation and distance from an object (118) or site to be located within an area. A computer (106) linked to an access transceiver (110,112) receives transmissions from a user (102) wearing a headset (104) including a transceiver (202) and electronic compass (122). The compass (122) provides a signal indicative of the user orientation. An access transceiver (110,112) receives the signal and calculates the location of the user (102) based on the time difference of arrival of the RF signal and triangulation of the user movement. An accelerometer (204) in the headset (104) continuously tracks user movement. The location of the object (118) in a vertical direction is provided by a directory or other reference source stored in the computer (106). Based on the angular orientation, horizontal and vertical distance of the object (118) or site relative to the user (102), the computer (106) maps the location information into sounds in the form of pulse amplitude or frequency modulated sound. The audio signal is perceived by the user (102) as emanating from the object (118) or site.

    DIGITIZER FOR BAR CODE READER
    54.
    发明专利
    DIGITIZER FOR BAR CODE READER 未知

    公开(公告)号：CA2134698A1

    公开(公告)日：1995-05-18

    申请号：CA2134698

    申请日：1994-10-31

    Applicant: SYMBOL TECHNOLOGIES INC

    Inventor： BRIDGELALL RAJ ,  GOREN DAVID

    IPC: G06K7/00 ,  G06K7/10 ,  G06K9/18

    Abstract: 26 A multi-bit digitizer (30) for a barcode reader detects the presence of edges of a scanned barcode symbol, and also measures the strength of each detected edge. A polarity or edge direction signal (8) indicates the direction of each detected edge, and a timing signal (6) is representative of the timing and also, by means of a variable pulse width, the strength of each edge. A gating signal (200) indicates that the data are unreliable and invalid if the measured voltage applied to the scanner motor of the barcode reader is higher or lower than defined limit values. Any scans made at a speed which were too high or too low are rejected.

    56.
    发明专利
    未知

    公开(公告)号：BR9102294A

    公开(公告)日：1992-04-28

    申请号：BR9102294

    申请日：1991-05-29

    Applicant: SYMBOL TECHNOLOGIES INC

    Inventor： METLITSKY BORIS ,  SWARTZ JEROME ,  BARKAN EDWARD ,  SHEPARD HOWARD M ,  GOREN DAVID ,  BIUSO TONY

    IPC: G02B26/10 ,  G06K7/10 ,  G06K9/18

    Abstract: A portable scanning head emits and receives light from a light-emitting diode (10) to read symbols, such as bar-code symbols. The optics (12,18) within the scanner are operative for focusing a light beam (11) and the view of a light sensor (17) in different planes (13,22) exteriorly of a scanner housing. Imaging means are provided in the unit for imaging a viewing window. The viewing window has an area smaller than that of the scan spot. The system can employ an LED (10) as a light source and tolerate the relatively large-sized (on the order of millimeters) scan spot without sacrificing reading performance since the photodiode (17) "sees" only that portion of the scan spot visible through the viewing window.

    SINGLE FREQUENCY LOW POWER RFID DEVICE
    58.
    发明申请
    SINGLE FREQUENCY LOW POWER RFID DEVICE 审中-公开
    单频低功率RFID设备

    公开(公告)号：WO2007109451A3

    公开(公告)日：2008-04-24

    申请号：PCT/US2007063805

    申请日：2007-03-12

    Applicant: SYMBOL TECHNOLOGIES INC ,  DURON MARK ,  GIEBEL JAMES ,  GOREN DAVID ,  WULFF THOMAS ,  KNADLE RICHARD T JR ,  BROCK CHRISTOPHER

    Inventor： DURON MARK ,  GIEBEL JAMES ,  GOREN DAVID ,  WULFF THOMAS ,  KNADLE RICHARD T JR ,  BROCK CHRISTOPHER

    IPC: H01Q21/00

    CPC classification number: G06K7/0008

    Abstract: Methods, systems, and apparatuses for a reader transceiver circuit are described. The reader transceiver circuit incorporates a frequency generator, such as a surface acoustic wave (SAW) oscillator. A reader incorporating the reader transceiver circuit is configured to read a tag at very close range, including while being in contact with the tag. The transceiver can be coupled to various host devices in a variety of ways, including being located in a RFID reader (e.g., mobile or fixed position), a computing device, a barcode reader, etc. The transceiver can be located in an RFID module that is attachable to a host device, can be configured in the host device, or can be configured to communicate with the host device over a distance. The RFID module may include one or more antennas. The RFID module may include a detector that is configured to determine proximity. The detector may act as a trigger.

    Abstract translation: 描述了用于读取器收发器电路的方法，系统和装置。 读取器收发器电路包括频率发生器，例如表面声波（SAW）振荡器。 包括读取器收发器电路的读取器被配置为在非常接近的范围读取标签，包括在与标签接触的同时。 收发器可以以各种方式耦合到各种主机设备，包括位于RFID读取器（例如，移动或固定位置），计算设备，条形码读取器等中。收发器可以位于RFID模块中 可附接到主机设备，可以在主机设备中配置，或者可以被配置为在一定距离上与主机设备进行通信。 RFID模块可以包括一个或多个天线。 RFID模块可以包括被配置为确定接近度的检测器。 检测器可以用作触发器。

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