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    Method for optimizing the design and implementation of RFID tags
    61.
    发明专利
    Method for optimizing the design and implementation of RFID tags 未知

    公开(公告)号：AU2004232047A1

    公开(公告)日：2004-11-04

    申请号：AU2004232047

    申请日：2004-04-21

    Applicant: SYMBOL TECHNOLOGIES INC

    Inventor： BRIDGELALL RAJ

    IPC: G06K7/00 ,  G06K19/07 ,  G08C19/04 ,  G06F7/60

    Abstract: A method is provided for optimizing the design parameters of a RFID tag for use with a RFID reader in a RFID system. In the method, a desired frequency band that the RFID tag will operate in is chosen. Additionally, a maximum acceptable cost for the RFID tag, a minimum acceptable data range for the RFID tag and a minimum operating voltage for the RFID tag are chosen. For a given cost, an optimal data rate is calculated by varying a carrier modulation period of an interrogation signal generated by the RFID reader and antenna capacitance of the RFID tag. Next, an optimal range for a given operating voltage is calculated using the optimal data rate.

    Common circuitry and support in a multi-mode r.f. terminal
    65.
    发明专利
    Common circuitry and support in a multi-mode r.f. terminal 未知

    公开(公告)号：GB2379363A

    公开(公告)日：2003-03-05

    申请号：GB0206833

    申请日：2002-03-22

    Applicant: SYMBOL TECHNOLOGIES INC

    Inventor： BRIDGELALL RAJ

    IPC: H04B1/707 ,  H04J11/00 ,  H04Q7/32 ,  H04B1/40

    Abstract: A radiofrequency terminal 100 comprises a support having a predetermined form factor, e.g. such as that of a scan engine module commonly utilized in hand-held bar code scanners (fig 3). Two radio frequency transceivers supported on the support, share a common baseband processor 12 and operate using two different communication standards, e.g. OFDM and WCDMA. An auto ID reader 17 , e.g. bar code reader, smart card reader, biometric fingerprint sensor, OCR reader, etc, may also be supported on the support and common digital processing circuitry is used to process the digital signals generated by the r.f. transceivers and auto ID reader. A single Fast Fourier Transform (FFT) circuit 28 may process each of the digital signals. Data may be communicated from the terminal 100 to computer networks via different r.f. channels. A common support and shared circuitry may also be used in a terminal comprising a single r.f. transceiver and auto ID reader.

    66.
    发明专利
    未知

    公开(公告)号：BR0108933A

    公开(公告)日：2002-12-24

    申请号：BR0108933

    申请日：2001-12-27

    Applicant: SYMBOL TECHNOLOGIES INC

    Inventor： BRIDGELALL RAJ

    IPC: H04L12/28 ,  H04L12/56 ,  H04W36/14 ,  H04Q7/38

    Abstract: A Mobile Station (MS) is able to vertically roam in either direction between two different networks, i.e., WWAN and WLAN. The MS is equipped with a dual mode Radio for WWAN and WLAN transmissions. The WLAN Radio is linked to a WLAN Enterprise Gateway Controller (EGC) via a first air link and the WWAN Radio is linked to a WWAN Base Transceiver Station (BTS) via a second air link. An outgoing VoIP call from the WLAN Radio to a remote party on the WWAN will transition or seamlessly switch over to a WWAN connection when the MS detects packet error rates, frequent scale back or consistent signal degradation.

    METHOD AND SYSTEM FOR COMMUNICATING DATA TO A WIRELESS ACCESS POINT
    68.
    发明申请
    METHOD AND SYSTEM FOR COMMUNICATING DATA TO A WIRELESS ACCESS POINT 审中-公开
    将数据通信到无线接入点的方法和系统

    公开(公告)号：WO2005091654A3

    公开(公告)日：2006-05-04

    申请号：PCT/US2005007715

    申请日：2005-03-09

    Applicant: SYMBOL TECHNOLOGIES INC ,  BRIDGELALL RAJ

    Inventor： BRIDGELALL RAJ

    IPC: H04L12/28 ,  H04M1/725 ,  H04W76/04 ,  H04W84/12 ,  H04W88/10 ,  G06K17/00

    CPC classification number: H04W48/18 ,  H04W88/10

    Abstract: A system for communicating data through a network is disclosed. The system includes at least one access point (104) and at least one mobile unit (102). The access point includes (104) an access point processor (302), a wireless trans­ceiver (306) and an RFID transceiver (310). The wireless transceiver (306) is coupled to the access point processor (302) and the wireless transceiver (306) is configured to receive and transmit data to a mobile unit (102) in the wireless a. local area network. The RFID transceiver (310) is coupled to the access point processor (302)and the RFID transceiver (310) is configured to receive data from at least one mobile unit (102) in the wireless local area network when the wireless transceiver(306) is unavailable. The mobile unit(102) includes a mobile unit processor(306), a mobile unit wireless transceiver(204) and a mobile unit RFID transceiver(202). The mobile unit wireless transceiver(204) is coupled to the mobile unit processor(206) and the mobile unit wireless transceiver(204) is configured to receive and transmit data to the access point(104). The mobile RFI D transceiver(202) is coupled to the mobile unit processor(206) and the mobile

    Abstract translation: 公开了一种通过网络传送数据的系统。 该系统包括至少一个接入点（104）和至少一个移动单元（102）。 接入点包括（104）接入点处理器（302），无线收发器（306）和RFID收发器（310）。 无线收发器（306）耦合到接入点处理器（302），并且无线收发器（306）被配置为接收和发送数据到无线设备（102）中的移动单元（102）。 局域网。 RFID收发器（310）耦合到接入点处理器（302），并且RFID收发器（310）被配置为当无线收发器（306）从无线局域网中的至少一个移动单元（102）接收数据时， 不可用 移动单元（102）包括移动单元处理器（306），移动单元无线收发器（204）和移动单元RFID收发器（202）。 移动单元无线收发器（204）耦合到移动单元处理器（206），并且移动单元无线收发器（204）被配置为接收和发送数据到接入点（104）。 移动RFI D收发器（202）耦合到移动单元处理器（206）和移动设备

    METHOD AND SYSTEM FOR COMMUNICATING DATA TO A WIRELESS ACCESS POINT
    70.
    发明专利
    METHOD AND SYSTEM FOR COMMUNICATING DATA TO A WIRELESS ACCESS POINT 未知

    公开(公告)号：CA2557601C

    公开(公告)日：2014-03-04

    申请号：CA2557601

    申请日：2005-03-09

    Applicant: SYMBOL TECHNOLOGIES INC

    Inventor： BRIDGELALL RAJ

    IPC: H04L12/28 ,  G06K17/00 ,  H04M1/725 ,  H04W76/04 ,  H04W84/12 ,  H04W88/10

    Abstract: A system for communicating data through a network is disclosed. The system includes at least one access point (104) and at least one mobile unit (102). The access point includes (104) an access point processor (302), a wireless trans~ceiver (306) and an RFID transceiver (310). The wireless transceiver (306) is coupled to the access point processor (302) and the wireless transceiver (306) is configured to receive and transmit data to a mobile unit (102) in the wireless a. local area network. The RFID transceiver (310) is coupled to the access point processor (302)and the RFID transceiver (310) is configured to receive data from at least one mobile unit (102) in the wireless local area network when the wireless transceiver(306) is unavailable. The mobile unit(102) includes a mobile unit processor(306), a mobile unit wireless transceiver(204) and a mobile unit RFID transceiver(202). The mobile unit wireless transceiver(204) is coupled to the mobile unit processor(206) and the mobile unit wireless transceiver(204) is configured to receive and transmit data to the access point(104). The mobile RFI D transceiver(202) is coupled to the mobile unit processor(206) and the mobile

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