中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

19 records (took 0.022 seconds)

    IMPROVED REAL TIME LOCATION SYSTEM
    11.
    发明申请
    IMPROVED REAL TIME LOCATION SYSTEM 审中-公开
    改进的实时定位系统

    公开(公告)号：WO2005020497A3

    公开(公告)日：2005-08-04

    申请号：PCT/US2004028058

    申请日：2004-08-26

    Applicant: SYMBOL TECHNOLOGIES INC ,  ZEGELIN CHRIS

    Inventor： ZEGELIN CHRIS

    IPC: G01S5/00 ,  G01S5/02 ,  G01S19/48 ,  H04L20060101 ,  H04W64/00 ,  H04Q7/20

    CPC classification number: H04W64/00 ,  G01S5/0063 ,  G01S5/0252

    Abstract: Portable devices are provided with location data determined at a server computer by comparing radio signal characteristics to a database of characteristics. In one arrangement the server additionally downloads a portion of the database of radio signal characteristics to the portable device and the portable device uses the downloaded portion of the data base to determine if its location has changed. The portable device may either update the location data that it has previously downloaded from the server or alternately may signal the server to provide either updated location data or an increased rate of location data update.

    Abstract translation: 通过将无线电信号特征与特征数据库进行比较，向便携式设备提供在服务器计算机处确定的位置数据。 在一种布置中，服务器另外将无线电信号特征数据库的一部分下载到便携式设备，并且便携式设备使用数据库的下载部分来确定其位置是否已经改变。 便携式设备可以或者更新其先前从服务器下载的位置数据，或者可以向服务器发送信号以提供更新的位置数据或增加的位置数据更新速率。

    INTERFERENCE MITIGATION IN MOBILE UNITS HAVING LOCATION TRANSMITTERS
    12.
    发明申请
    INTERFERENCE MITIGATION IN MOBILE UNITS HAVING LOCATION TRANSMITTERS 审中-公开
    具有位置发射机的移动单元干扰减轻

    公开(公告)号：WO2005109928A3

    公开(公告)日：2006-09-08

    申请号：PCT/US2005014805

    申请日：2005-04-28

    Applicant: SYMBOL TECHNOLOGIES INC ,  VESUNA SAROSH ,  ZEGELIN CHRIS

    Inventor： VESUNA SAROSH ,  ZEGELIN CHRIS

    IPC: H04L12/28 ,  H04W52/02 ,  H04W88/06

    CPC classification number: H04W48/08 ,  H04W64/00 ,  H04W88/06

    Abstract: A mobile device (10) for data communications has a radio circuit for data communications with a wireless network access point and a radio tag (32) for transmitting location-identifying radio signals. The radio circuit and the radio tag are co-located on a circuit board or are commonly powered. The operation of the radio circuit and the radio tag (32) are segregated in time to avoid interferences. Standard wireless network interface protocol functions are exploited to identify time intervals in which the radio circuit is inactive for data communications. These time intervals are used to operate the radio tag to transmit the location-identifying radio signals.

    Abstract translation: 用于数据通信的移动设备（10）具有用于与无线网络接入点进行数据通信的无线电电路和用于发送位置识别无线电信号的无线电标签（32）。 无线电电路和无线电标签共同位于电路板上或通常被供电。 无线电电路和无线电标签（32）的操作在时间上被隔离以避免干扰。 利用标准无线网络接口协议功能来识别无线电电路对于数据通信不活动的时间间隔。 这些时间间隔用于操作无线电标签以发送位置识别无线电信号。

    SELF CALIBRATION OF SIGNAL STRENGTH LOCATION SYSTEM
    13.
    发明申请
    SELF CALIBRATION OF SIGNAL STRENGTH LOCATION SYSTEM 审中-公开
    信号强度定位系统自校准

    公开(公告)号：WO2004106964A3

    公开(公告)日：2006-05-26

    申请号：PCT/US2004016161

    申请日：2004-05-24

    Applicant: SYMBOL TECHNOLOGIES INC ,  ZEGELIN CHRIS ,  GOREN DAVID P

    Inventor： ZEGELIN CHRIS ,  GOREN DAVID P

    IPC: G01S20060101 ,  H04Q7/00 ,  H04B17/00

    CPC classification number: G01N33/6842

    Abstract: A system for locating mobile units in a data communications system based on signal strength measurements of mobile unit transmissions is calibrated for variations in mobile unit transmitter power by determining range of a mobile unit from an access point using two way time ranging. The time ranging is compared to the value for range based on signal strength and a correction value for the mobile unit is updated based on the difference between range based on time ranging and the range based on signal strength.

    Abstract translation: 基于移动单元传输的信号强度测量，在数据通信系统中定位移动单元的系统通过使用双向时间范围从接入点确定移动单元的范围来校准移动单元发射机功率的变化。 将时间范围与基于信号强度的范围值进行比较，并且基于基于时间范围的范围与基于信号强度的范围之间的差异来更新移动单元的校正值。

    IMPROVED WLAN ROAMING BASED ON LOCATION
    15.
    发明申请
    IMPROVED WLAN ROAMING BASED ON LOCATION 审中-公开
    基于位置的改进的WLAN漫游

    公开(公告)号：WO2005048074A3

    公开(公告)日：2005-12-29

    申请号：PCT/US2004037683

    申请日：2004-11-10

    Applicant: SYMBOL TECHNOLOGIES INC ,  ZEGELIN CHRIS

    Inventor： ZEGELIN CHRIS

    IPC: G06F20060101 ,  G06F15/173 ,  H04L12/28 ,  H04L12/56 ,  H04W36/08 ,  H04W36/22 ,  H04W36/32 ,  H04W48/20 ,  H04W64/00 ,  H04W84/12 ,  H04Q7/20

    CPC classification number: H04W48/20

    Abstract: A wireless data communications system has mobile units which become associated with access points. Association between a mobile unit and an access point is changed as mobile units move within an area having a plurality of access points. Selection of an access point for association with a mobile unit is made according to selection criteria including a plurality of selection parameters. The system includes arrangements for determining location of a mobile unit within the area. The selection parameters include location of the mobile unit or direction of movement of the mobile unit when there are a plurality of access points available for association with the mobile unit.

    Abstract translation: 无线数据通信系统具有与接入点相关联的移动单元。 当移动单元在具有多个接入点的区域内移动时，移动单元和接入点之间的关联被改变。 根据包括多个选择参数的选择标准来选择与移动单元相关联的接入点。 该系统包括用于确定该区域内的移动单元的位置的布置。 当存在可用于与移动单元关联的多个接入点时，选择参数包括移动单元的位置或移动单元的移动方向。

    IMPROVED WLAN ROAMING BASED ON LOCATION
    19.
    发明公开
    IMPROVED WLAN ROAMING BASED ON LOCATION 有权
    改进WLAN ROAMING标准实施BASIS

    公开(公告)号：EP1695569A4

    公开(公告)日：2010-07-28

    申请号：EP04800994

    申请日：2004-11-10

    Applicant: SYMBOL TECHNOLOGIES INC

    Inventor： ZEGELIN CHRIS

    IPC: G06F20060101 ,  G06F15/173 ,  H04L12/28 ,  H04L12/56 ,  H04W36/08 ,  H04W36/22 ,  H04W36/32 ,  H04W48/20 ,  H04W64/00 ,  H04W84/12

    CPC classification number: H04W48/20

    Abstract: A wireless data communications system has mobile units which become associated with access points. Association between a mobile unit and an access point is changed as mobile units move within an area having a plurality of access points. Selection of an access point for association with a mobile unit is made according to selection criteria including a plurality of selection parameters. The system includes arrangements for determining location of a mobile unit within the area. The selection parameters include location of the mobile unit or direction of movement of the mobile unit when there are a plurality of access points available for association with the mobile unit.

Patent Agency Ranking