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)
12/1999
12/22/1999EP0965933A2 Shelf talker management system and method
12/22/1999EP0964803A2 Transmitter unit for an anti-theft system in a motor vehicle
12/22/1999EP0949576B1 Data carrier and method for wireless reception of data and energy
12/22/1999EP0788637B1 Contactless energy and data transmission system
12/21/1999US6005475 Communication method and apparatus for conveyor carriages
12/16/1999WO1999038272A3 Short range magnetic inductive communication
12/15/1999EP0964379A2 Moving body detection system
12/15/1999EP0820646B1 Antenna system, in particular an antenna system for traffic communications systems
12/14/1999US6002917 Reference channel maintenance method for a wide area paging system
12/14/1999US6002344 System and method for electronic inventory
12/09/1999WO1999050738A3 Passive data carrier having means for reducing the power consumption
12/07/1999US5999409 Contactless IC card
12/02/1999WO1999062082A1 Inductive textile and use of such a textile in inductive devices
12/02/1999DE19824290A1 Energy transmission system for charging road or rail vehicle traction battery
12/01/1999EP0960486A1 Method for contactless information and power transmission
11/1999
11/30/1999US5992739 Movable object carrying electronically stored data to be read and or/overwritten by a non-contact reading/writing device
11/25/1999WO1999060509A1 Device for the contactless transmission of data
11/25/1999DE19824643A1 Personal data ring with several independent data storage spaces
11/24/1999EP0958553A1 Queue management system
11/18/1999WO1999037039A3 A multi-frequency voltage regulating circuit incorporating a magnetic field sensor and programmable magnetic field detection
11/11/1999WO1999057681A1 Data carrier having rectifier means and having improved voltage limiting means
11/11/1999WO1999057676A1 System for encoded rf and encoded magnetic field communication and method therefor
11/11/1999WO1999044307A3 Antenna-gain diversity
11/11/1999WO1999038273A3 Vector measuring aerial arrays for magnetic induction communication systems
11/10/1999EP0954756A1 Radioelectric transponder equipped with frequency detuning antenna and circuit
11/09/1999US5983076 Antenna unit for communication system for movable body
11/09/1999US5983075 Radio communication system between a vehicle and a roadside station
11/09/1999US5982764 Time-multiplexed short-range magnetic communications
11/03/1999EP0953225A1 Arrangement for the contactless transmission of electric energy and/or electric signals
10/1999
10/28/1999WO1999054096A1 Method for transmitting data between a small electrical device and a supplementary electrical device which can be connected thereto, and devices configured accordingly
10/28/1999DE19820882C1 Noncontact torque measurement arrangement
10/27/1999EP0952543A1 Semiconductor device and method for manufacturing the same
10/27/1999CN1233361A Data-transmission circuit with a station and a response circuit
10/27/1999CN1046068C Digital selecting-pass radio microphone aid system for electrical teaching
10/26/1999US5974326 System and method for channel allocation in a radio telephone system for an underground railway
10/21/1999DE19916757A1 Tag esp. bi-directional RF tag attached to tooling components within stamping or drawing press
10/21/1999DE19817273A1 Data transmission between one electrical unit and another
10/20/1999EP0951090A2 Antenna apparatus
10/20/1999EP0950339A1 Hearing enhancement system
10/20/1999EP0950288A1 Wireless communication system including a plurality of selectable antennas and wireless communications methods
10/20/1999CN1232362A Auricular device for hypoacusic patients
10/19/1999US5969636 Messaging terminal with voice notification
10/17/1999CA2267717A1 Rf tag attached to die assembly for use in press machine
10/14/1999WO1999052223A1 Non-contact moving object identifying device
10/13/1999EP0949576A1 Data carrier and method for wireless reception of data and energy
10/13/1999EP0688454A4 Multi-mode identification system
10/13/1999EP0640255B1 A primary inductive pathway
10/13/1999CN1231457A Electronic identification system
10/13/1999CN1045703C 接收机 Receiver
10/12/1999US5966647 Portable receiver having pivotally connected case arranged to shield antenna
10/12/1999US5966641 Aerial arrays for inductive communications systems
10/07/1999WO1999050930A1 Device for controlling the impedance returned on an electronic label antenna
10/07/1999WO1999050780A1 Device for generating a rotating magnetic field in space for powering contactless electronic labels
10/07/1999WO1999050738A2 Passive data carrier having means for reducing the power consumption
10/07/1999WO1999036798A3 Rf identification process and apparatus
10/07/1999CA2324896A1 Device for controlling the impedance returned on an electronic label antenna
10/06/1999EP0948083A2 Loop antenna device and its use in a data processing apparatus with a removal data storing medium
10/06/1999EP0947951A1 Teletransmission apparatus using inductive coupling
10/06/1999CN1231084A Wireless energy and data transfer for modular peripheral system
10/06/1999CN1231043A Pager with voice and data messages
10/05/1999US5963177 Methods of enhancing electronmagnetic radiation properties of encapsulated circuit, and related devices
10/05/1999CA2197347C Non-contacting type radio frequency recognizing credit card system
09/1999
09/30/1999WO1999049437A1 Theft preventive tag and method for attaching the same
09/30/1999WO1999049410A1 System and method for producing particular functions in contactless labels
09/30/1999DE19813210A1 Signal transmission device for combination of telephone and hearing aid
09/30/1999DE19812728A1 Anordnung für einen Antennenschwingkreis für kontaktlose Übertragungssysteme Arrangement for an antenna resonant circuit for contactless transmission systems
09/30/1999DE19812540A1 Method of inductive transmission of energy
09/29/1999EP0945829A2 Arrangement for a resonant circuit coil for contactless communicationsystems
09/29/1999EP0760990B1 Arrangement, in particular in vehicles, for transmitting electric signals by connecting lines
09/29/1999CN2341325Y Pager on service place
09/23/1999WO1999048225A1 Contactless communication system using an induction method between a terminal and portable objects, comprising terminal functional testing means
09/23/1999DE19809570A1 Electric signal line e.g. for TTL integrated circuit connection to optocoupler
09/23/1999DE19809567A1 Hearing aid
09/22/1999EP0944015A2 Interrogator with variable maximum output power
09/21/1999CA2169904C System and method for determining epl message transmission retries
09/16/1999WO1999046722A1 Method, system and device for transferring, by electromagnetic linkage, data between readers and nomadic objects
09/15/1999EP0942387A1 Procedure and system for multiple reading of a dynamic collection of labels
09/10/1999WO1999045499A1 Data medium for contactless reception of amplitude-modulated signals
09/10/1999WO1999045405A1 Magnetic digital signal coupler
09/10/1999CA2320311A1 Magnetic digital signal coupler
09/08/1999EP0940769A1 Data carrier for contacless reception of amplitude modulated signals
09/08/1999EP0940763A1 Passsenger, baggage, and cargo reconciliation system
09/08/1999EP0939931A1 Method for communicating with a plurality of contactless data carriers and contactless data carrier for use therein
09/02/1999WO1999044307A2 Antenna-gain diversity
09/02/1999WO1999044177A1 Radio frequency identification tag system using tags arranged for coupling to ground
08/1999
08/31/1999US5946343 Digital wireless speaker system
08/31/1999US5945958 Loop antenna
08/31/1999US5945634 Coaxial cable tap with slitted housing and non-piercing tap insert
08/26/1999WO1999042948A1 Data carrier for contactless reception of data and energy and method for operating the same
08/25/1999CN1227019A System and method for providing useful information for moving object
08/25/1999CN1227014A Selective call radio with contraposed touchpad
08/24/1999CA2178382C Combined antenna apparatus and method for receiving and transmitting radio frequency signals
08/19/1999WO1999016015A3 Contactless proximity automated data collection system and method
08/18/1999EP0936841A1 Auricular device for patients with hypoacusis
08/18/1999EP0936574A2 IC card and IC card system
08/18/1999EP0936571A2 IC card, IC card processor and IC card system
08/17/1999US5940447 Wireless powered communication device using power signal sampling and method
08/17/1999US5938151 Communication systems employing power cables for conveyor carriages
08/12/1999WO1999029542A3 Transmitter unit for an anti-theft system in a motor vehicle
08/12/1999WO1999026462A3 System and method for electronic inventory
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