Patents
Sitemap › H04 - Electric communication technique › H04B - Transmission › H04B 5 - Near-field transmission systems, e.g. inductive loop type
Patents for H04B 5 - Near-field transmission systems, e.g. inductive loop type (17,859)
06/2003
06/04/2003CN1110910C System and method for near-field human-body coupling of encrypted communication with identification cards
06/04/2003CN1110402C Method for transmitting data between small electrical device and supplementary electrical device which connected thereto, and equipment therefor
06/03/2003US6574479 Method and apparatus for sending a message to a pager using a subscriber telephone number
05/2003
05/28/2003EP1314134A1 Identification transponder
05/28/2003EP1314131A1 Zone based radio frequency identification
05/28/2003EP1314130A1 Identification device detection using multiple signal combination
05/28/2003EP1216165B1 Wireless data and energy transmission device
05/28/2003EP0939931B1 Method for communicating with a plurality of contactless data carriers and contactless data carrier for use therein
05/28/2003CN1420432A Household safety informatiou managing method and devcie
05/27/2003US6570490 Contactless IC card
05/27/2003CA2217234C Track-guided transport device having energy and information transmission
05/22/2003WO2003042949A1 Tire sensor unit
05/22/2003WO2003042948A1 Tire monitoring system
05/22/2003WO2003042916A1 Radio frequency identification systems for asset tracking
05/22/2003WO2003042914A1 Data carrier for transmitting data with different transmission parameters
05/22/2003WO2003042913A1 Data carrier for transmitting data with different repetition frequencies
05/22/2003US20030095035 Data carrier for transmitting data with different transmission parameters
05/22/2003US20030095034 Method and apparatus for magnetic induction heating using radio frequency identification of object to be heated
05/22/2003US20030095033 Data carrier for transmitting data with different repetition frequencies
05/22/2003US20030095032 Tag management server
05/22/2003US20030094855 Array for the contact-less transmission of electrical signals or energy
05/22/2003CA2467431A1 Tire sensor unit
05/22/2003CA2467375A1 Tire monitoring system
05/22/2003CA2466681A1 Radio frequency identification systems for asset tracking
05/21/2003EP1312171A2 Energy self-sufficient high frequency transmitter
05/21/2003EP1312032A1 High sensitivity reader for passive transponders
05/21/2003EP1031120B1 System and method for electronic inventory
05/21/2003EP1012899B1 Device for contactless transmission of electrical signals and/or energy
05/21/2003CN1419345A Multi-functional USB bluetooth RF communication module
05/21/2003CN1109319C Contactless energy and data transmission
05/20/2003US6567394 Non-contact IC card and system for performing data communication
05/15/2003WO2003041295A1 Passive device for increasing the transmission effectiveness of radio frequency systems
05/15/2003WO2003041009A1 Data carrier having power dependent data processing modes
05/15/2003WO2003040950A2 Dual antenna coil transponder system
05/15/2003US20030093167 Queue management system
05/15/2003US20030091118 Array for the transmission of electrical energy or signals
05/15/2003US20030089771 Radio frequency identification systems for asset tracking
05/14/2003EP1310909A1 Contactless passive card
05/14/2003EP1310386A2 Sending and/or receiving unit for installation in elastic structures and antennae herefor
05/14/2003EP1309938A1 Antenna generating an electromagnetic field for transponder
05/13/2003US6563425 RFID passive repeater system and apparatus
05/08/2003WO2003038744A1 Ic card, information processing terminal, trilateral data communication system, and method
05/08/2003WO2003038635A1 Communication system and method, information processing terminal and method, and information processing apparatus and method
05/08/2003US20030085802 Smart card fast-clamping receiver for pulsed RF fields
05/08/2003US20030085619 Transmitting and/or receiving unit for incorporation into an elastic structure
05/08/2003US20030085288 Contactless SIM card carrier with detachable antenna and carrier therefore
05/07/2003EP1308886A2 Contactless transaction card with separable antenna and carrier therefor
05/07/2003EP1308884A1 Rfid tag installing structure, rfid tag installing method, and rfid tag communication method
05/07/2003EP1307853A1 Detection of an electric signature of an electromagnetic transponder
05/07/2003EP0772839B1 Supply voltage processing circuit and a data carrier with a supply voltage processing circuit
05/06/2003US6559755 Storage device and method, information processing apparatus and method, and provision medium therefor
05/06/2003US6559754 System for the transmission of data from a data carrier to a station by means of one or at least one other auxiliary carrier signal
05/06/2003CA2411309A1 Contactless transaction card with separable antenna and carrier therefor
05/01/2003WO2002041086A9 Control system methods and apparatus for inductive communication across an isolation barrier
04/2003
04/30/2003CN1107279C Contactless energy and data transmission system
04/29/2003US6556175 Non-contact type IC card, antenna and antenna frame for IC card
04/24/2003WO2002103645A3 Wireless identification system and protocol
04/24/2003US20030078004 Method and apparatus for transmission and reception of an analog magnetic resonance signal
04/24/2003US20030078003 Surgical communication and power system
04/23/2003EP1025620B1 Coaxial radiating cable
04/23/2003CN1413408A 非接触信号分析器 Non-contact signal analyzer
04/23/2003CN1413389A Information communication system, noncontactic IC card and IC chip
04/22/2003US6552661 Zone based radio frequency identification
04/17/2003WO2003032240A2 Methods and apparatuses for identification
04/17/2003WO2003032224A1 Rfid time tracking
04/17/2003US20030071718 Anti-tear protection for smart card transactions
04/17/2003CA2462878A1 Rfid time tracking
04/16/2003EP1301898A1 Low-power passive transponder
04/16/2003EP1076876B1 Device for the contactless transmission of data
04/16/2003EP0800727B1 Method and apparatus for radio telephone call handover in an underground railway communications system
04/16/2003CN2545758Y Blue tooth digital remote sensing remote-controller
04/16/2003CN1106084C Cradle device having totating hinge in pager
04/15/2003US6549064 Efficient charge pump apparatus
04/10/2003WO2002082634A3 Demodulator for amplitude shift key (ask)-modulated signals
04/10/2003US20030069815 RFID time tracking
04/10/2003US20030067840 Free-floating altitude stabilized system
04/09/2003EP1299929A2 Self-diagnosing transmission system
04/09/2003EP1099200A4 Rfid system for detecting low power resonant tags
04/09/2003CN2544476Y Blueteeth technology based embedded type public telephone network gateway
04/09/2003CN2544472Y Blueteeth technology based LAN radio connection equipment
04/09/2003CN2543437Y Multi-function baby speech sound paging pllow
04/03/2003WO2003028243A1 Communication system using leakage transmission line
04/03/2003US20030063034 Radio guidance antenna, data communication method, and non-contact data communication apparatus
04/02/2003EP1298761A2 Radio guidance antenna, data communication method, and non-contact data communication apparatus
04/02/2003CN1407733A Portable digital tourist device systems
04/01/2003US6542717 System and method for optimizing personal area network (PAN) electrostatic communication
04/01/2003US6540147 Inductive coupling data send/receive circuit
03/2003
03/27/2003WO2003026350A2 Audio distributor
03/27/2003WO2003025832A1 Modulator for electromagnetic signals transmitted by a contactless transmission/reception system
03/27/2003WO2002091616A3 Electromagnetically coupled interconnect system architecture
03/27/2003US20030061066 Apparatus for settling accounts and method of settling accounts
03/26/2003EP1153317B1 Method of interrogating a radio frequency identification device
03/26/2003CN1406311A Choke inductor for wireless communication and control in a well
03/26/2003CN1104149C Multichannel selective call receiver and its channel identification method
03/25/2003US6538569 Container with sensor
03/25/2003US6536673 Circuit for detecting presence or absence of proximity IC card device
03/20/2003US20030054805 Portable information unit, control method for portable information unit, recording medium, and control program
03/20/2003US20030053637 Audio distributor
03/20/2003US20030051881 Electro-hydraulically pressurized downhole valve actuator
03/19/2003EP0977398B1 Data communication equipment, data communication system, and data communication method
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