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)
05/1997
05/09/1997WO1997016892A1 Method and apparatus for radio telephone call handover in an underground railway communications system
05/02/1997EP0770885A1 Transmitting and receiving system
04/1997
04/30/1997CN1148781A Wide-zone beeping business treatment method for wireless beeping system
04/29/1997US5625883 System for wireless information transmission between two different rooms
04/24/1997WO1997015125A1 Embedded data link and protocol
04/23/1997CN2253075Y Servant calling device
04/16/1997EP0768620A2 Radio frequency identification transponder and method of making same
04/15/1997US5621199 RFID reader
04/10/1997DE19641056A1 Schlüsselidentifizierungssystem Key identification system
04/09/1997CN1147185A Audio paging apparatus and method for cordless paging receiver
04/08/1997US5619582 Enhanced concert audio process utilizing a synchronized headgear system
04/08/1997US5619078 Primary inductive pathway
04/02/1997EP0766200A2 Antenna for reader/writer
03/1997
03/27/1997DE19542214C1 Kommunikationssystem Communication system
03/26/1997EP0765002A2 Radiating coaxial cable and radio communication system using the same
03/26/1997EP0764920A2 Wireless communication data storing medium for receiving a plurality of carriers of proximate frequencies and a transmission/receiving method
03/26/1997CN1146125A Method of recovering erased calling message in radio pager
03/25/1997US5615229 Short range inductively coupled communication system employing time variant modulation
03/20/1997DE19534188A1 Cordless transmission device adapting method especially to ETSI appropriate frequency band
03/13/1997WO1997009798A1 Airplane pilot communication aid
03/13/1997WO1997009200A1 Audio device for vehicles, especially motor vehicles
03/12/1997EP0762308A1 Arrangement for remote information exchange between a passive portable object and a station, corresponding object and station
03/12/1997EP0760990A1 Arrangement, in particular in vehicles, for transmitting electric signals by connecting lines
03/11/1997US5610384 Magnetic coupling circuit-driving system
03/06/1997WO1997008914A1 Monitoring and/or control system
03/05/1997CN1144424A Portable wireless installation
03/05/1997CN1144421A Filter device and dual-band radio system in which filter device is used
03/04/1997US5608417 RF transponder system with parallel resonant interrogation series resonant response
02/1997
02/27/1997DE19633954A1 Filter device esp. for two band radio system for mobile phones
02/27/1997DE19607500A1 Filter device esp. for two band radio system
02/27/1997DE19530640A1 Stored data inductive reading method e.g. for smart cards
02/26/1997CN2248426Y Micro-wireless earphone
02/26/1997CN1143887A Battery saving method of paging receiver
02/26/1997CN1143784A Alert control circuit and method of paging receiver
02/25/1997CA2168919A1 Intelligent shopping cart
02/11/1997US5603080 Radio coverage in closed environments
02/11/1997US5602834 Linear coverage area antenna system for a CDMA communication system
02/04/1997US5600330 Device for measuring position and orientation using non-dipole magnet IC fields
01/1997
01/28/1997US5598169 Detector and modulator circuits for passive microwave links
01/22/1997CA2181309A1 Power supply circuitry for a transponder and operable with infinitesimal power
01/16/1997WO1997001891A1 Data-transfer method and device with multi-channel transmitters and wide-band portable receivers
01/09/1997WO1996038805A3 Supply voltage processing circuit and a data carrier with a supply voltage processing circuit
01/08/1997CN1139998A 接收电路 Receiving circuit
01/03/1997WO1997000501A1 Non-contacting type radio frequency recognizing credit card system
01/01/1997CN1139364A Paging receiver with performed sentence displaying function
12/1996
12/27/1996EP0750276A2 Contactless passive card
12/24/1996US5587578 Method and apparatus for optimizing magnetic flux through an electronic label of a contact-free identification system
12/19/1996WO1996041430A1 Linear coverage area antenna system for a cdma communication system
12/19/1996DE19521215A1 Bidirectional communication line for high frequency signals
12/18/1996EP0749092A2 An electronic price label (EPL) system
12/18/1996EP0748491A1 Electronic identification system
12/18/1996CN2243143Y Integrated infrared frequency-modulation earphone
12/18/1996CN2242601Y Cap-type moveable communication device
12/12/1996DE19520824A1 Data transmission device for track-to-train communications
12/10/1996US5583525 Capacitive coupling
12/05/1996WO1996038805A2 Supply voltage processing circuit and a data carrier with a supply voltage processing circuit
12/04/1996EP0745747A1 A data transfer system and a demodulator therefor
11/1996
11/28/1996DE4441083C1 Fever monitoring appts. for continually monitoring temp. of patient in intensive care
11/27/1996EP0744750A2 Capacitive interface for coupling between a music chip and audio player
11/27/1996EP0627106B1 Method and device for electronic identification
11/27/1996CN1136755A Method and equipment for receiving selective paging signal
11/21/1996WO1996037052A1 Short-range magnetic communication system
11/21/1996CA2221364A1 Short-range magnetic communication system
11/20/1996EP0743761A2 Holder for a paging receiver
11/20/1996EP0743698A1 Transmitting device for traffic communication systems
11/14/1996WO1996036134A1 System for non-contact sensing and signalling using human body as signal transmission medium
11/13/1996EP0742647A1 Receiving circuit
11/13/1996CN1135702A Portable radio device weared on wrist
11/12/1996US5574470 Radio frequency identification transponder apparatus and method
11/12/1996US5574439 Paging receiver which displays canned and general messages
11/06/1996EP0740894A1 Infrared communication systems
10/1996
10/31/1996WO1996034428A1 Coaxial cable tap
10/31/1996WO1996034299A1 Interrogator for electronic identification system
10/31/1996CA2219229A1 Interrogator for electronic identification system
10/31/1996CA2219125A1 Coaxial cable tap
10/30/1996CN2239103Y Radio karaoke device for videocorder
10/30/1996CN1134766A Cable-less data-enquiry method and device
10/24/1996DE19512107A1 Track-guided transport system for goods conveying
10/23/1996EP0738984A1 Object identification system
10/23/1996CN1033130C 寻呼接收机 Paging receiver
10/22/1996US5568516 For transmitting audio signals between first and second location
10/22/1996CA1338675C Actuator and communication systems
10/19/1996CA2174392A1 Object identification system
10/17/1996WO1996032755A1 Antenna system, in particular an antenna system for traffic communications systems
10/17/1996CA2218053A1 Antenna systems, in particular an antenna system for traffic communications systems
10/16/1996CN2237908Y Wireless remote-control electric bell
10/10/1996WO1996031787A1 Radio frequency identification reader
10/10/1996WO1996031381A1 Track-guided transport system with power and data transmission
10/10/1996CA2217158A1 Radio frequency identification reader
10/09/1996CN1132962A Highly stable frequency generator
10/01/1996US5561430 Inductor/antenna for a recognition system
09/1996
09/25/1996EP0733914A1 Detector and modulator circuits for passive microwave links
09/25/1996CN1131885A Reference channel maintaining method of wide area paging system
09/18/1996EP0732663A2 Data carrier capable of increasing data transmission rate
09/18/1996EP0732600A2 Active impulse magnetometer
09/18/1996EP0732011A1 Cable-less data-enquiry method and device
09/17/1996US5557085 Method and device for electronic identification
09/11/1996CN2235175Y Improved sound collector
09/10/1996US5555337 Surface wave guideline and object detecting device using surface wave guideline
08/1996
08/21/1996CN2233643Y Safety wireless remote controller for distributing in mechanical kiln
1 ... 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179