H04Q 5 - Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange

Patents for H04Q 5 - Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange (6,717)
12/2004
12/23/2004	US20040257204 RFID communication system and the search method thereof
12/23/2004	US20040257203 Data encoding in radio frequency identification transponders
12/16/2004	WO2004098111A3 Enhancing mobile multiple-access communication networks
12/16/2004	US20040251541 Method, system, and apparatus for high volume assembly of compact discs and volume assembly of compact discs and digital video discs incorporating radio frequency identification tag technology
12/16/2004	US20040250949 Method and apparatus for expanding a semiconductor wafer
12/16/2004	US20040250417 Method, system, and apparatus for transfer of dies using a die plate
12/09/2004	US20040246103 Reusable electronic tag for secure data accumulation
12/08/2004	EP1484931A1 Method for transmitting and receiving SMS and adapted communication terminal
11/2004
11/30/2004	US6825754 Radio frequency identification device for increasing tag activation distance and method thereof
11/25/2004	US20040233043 Communication system
11/18/2004	US20040227619 Electronic circuit for contactless tag, and contactless tag
11/11/2004	WO2004098111A2 Enhancing mobile multiple-access communication networks
11/03/2004	CN1543230A Method for avoiding noise generation in radio interphone at the end of session
11/03/2004	CN1542675A Radio communication system and method, radio communication device and method, program
10/2004
10/28/2004	WO2004092999A2 Multimode wireless local area network/radio frequency identification asset tag
10/28/2004	US20040214523 RF transmission - reception device
10/28/2004	US20040212480 System and method for inventorying multiple remote objects
10/28/2004	US20040212479 Method and system for remote monitoring and control utilizing radio frequency devices
10/28/2004	CA2519970A1 Multimode wireless local area network/radio frequency identification asset tag
10/27/2004	EP1471366A1 RF transceiver
10/27/2004	CN1540996A Method of generating warning signal for radio interphone
10/20/2004	CN2650430Y Head intercom for electrician
10/14/2004	US20040201454 Networked RF tag for tracking freight
10/07/2004	US20040196143 Leveraging standard terminal emulation protocol as a connection mechanism for interfacing with RFID base stations
09/2004
09/29/2004	CN1533189A Radio walkie-talkie capable of producing vibrative prompt
09/28/2004	US6799230 Peripheral device exchanging data with one of higher-order devices by switching interfaces
09/15/2004	CN1529527A Intelligent public traffic system
09/14/2004	US6791451 System and method for improving the security of storage of firearms and other objects, and for aiding the recovery of such if removed from storage
09/08/2004	CN2640162Y Integral visual speakerphone for door
09/08/2004	CN2640161Y Building speakerphone without wiring
09/08/2004	CN2640160Y Raido speakerphone
09/07/2004	US6789105 Multiple-editor authoring of multimedia documents including real-time video and time-insensitive media
09/01/2004	CN2638373Y Communication device for residential building unit door
09/01/2004	CN2638372Y Outdoor intercom
08/2004
08/25/2004	CN2636549Y Indoor apparatus of storied building talk back and information system
08/18/2004	CN2634763Y Visual intercommunication door bell indoor unit with combined push bottom
08/18/2004	CN2634730Y Radio intercommunication door bell
08/18/2004	CN1163084C Multimedia wireless speech intercommunication teaching host machine and student machine
08/11/2004	CN2632965Y Wireless visual intercom doorbell
08/05/2004	WO2004038969A3 Proximity-based automatic id code reconfiguration of wireless input/output systems
08/05/2004	US20040150510 Interrogator and tag of wireless communication system
08/04/2004	CN1518366A Method for processing detection audio frequency signal by digital signal
07/2004
07/28/2004	CN2629374Y Medical visual talkback calling apparatus
07/28/2004	CN2629373Y Multipurpose strap cover for portable radio intercom
07/28/2004	CN2629372Y Visual intercom
07/21/2004	CN2627768Y Small-sized integrated broadcaster
07/07/2004	CN2624557Y Package assembly improvement of walkie-talkie
07/07/2004	CN2624556Y A walkie-talkie block mount structure
06/2004
06/30/2004	CN1509086A Sound signal transmitting device at high-noise
06/16/2004	CN1154300C Method for supporting part of routing for integral service digital network user of multiple medium gateway
06/16/2004	CN1154276C Personalized call method for mobile service user
06/09/2004	CN2620448Y Hand-operated button intercom in automatic fire warning system
06/09/2004	CN2620447Y Mainframe using telephone program control exchanger as gate inhibition interphone system for entrance of housing estate
06/03/2004	US20040107255 System for real-time communication between plural users
06/03/2004	US20040107254 Method for real-time communication between plural users
06/03/2004	US20040107253 System for real-time communication between plural users
06/02/2004	CN2619446Y Hand held intercom
06/02/2004	CN1501719A A signal processing method for handheld wireless interphone
05/2004
05/27/2004	US20040103152 Method for real-time communication between plural users
05/13/2004	US20040090310 Electronic identification system with forward error correction system
05/06/2004	WO2004038969A2 Proximity-based automatic id code reconfiguration of wireless input/output systems
05/05/2004	CN1494329A Intercom composite coding group intercommunication method
04/2004
04/29/2004	US20040080426 Proximity-based automatic ID code reconfiguration of wireless input/output systems
04/15/2004	US20040070491 System and method for setting up a universal remote control
03/2004
03/25/2004	WO2004025851A1 Communication system response device
03/17/2004	CN2606986Y Group duplex audio amplifying communication machine
03/03/2004	CN1479532A 低压电力线载波楼宇对讲系统 Low Voltage Power Line Carrier building intercom system
03/03/2004	CN1141001C Video interphone and information releasing system of building
02/2004
02/17/2004	US6693512 Device location and identification system
02/04/2004	CN1472971A Intellectual multiple apartment wireless visual intercom system
02/03/2004	US6686830 Homodyne I/Q transceiver for a spread spectrum reader
02/03/2004	US6686829 Electronic identification system with forward error correction system
12/2003
12/31/2003	CN2596702Y Control panel
12/24/2003	CN2595096Y Automatic speech signal inverter for fire service data
12/04/2003	US20030225832 Creation and editing of multimedia documents in a multimedia collaboration system
12/04/2003	US20030222756 Electronic key system operable with a charge capacitor power
12/03/2003	CN2590313Y Remote teaching control device
11/2003
11/27/2003	US20030220711 Interrogation, monitoring and data exchange using RFID tags
11/26/2003	CN2588710Y Internal communication intercom system used in storeyed-buildings
11/26/2003	CN1458799A Intercommunication system for outdoor recording meter number
11/05/2003	CN2585522Y Telephone set with audio amplifier and intercommunication function
10/2003
10/22/2003	CN2582300Y Semi-conductor laser audio frequency modulation device
10/22/2003	CN2582299Y Internal liaison communication equipment
10/02/2003	US20030187940 Teleconferencing employing multiplexing of video and data conferencing signals
09/2003
09/03/2003	EP1042741A4 Transaction authentication for 1-way wireless financial messaging units
08/2003
08/21/2003	US20030158901 UTP based video conferencing
08/06/2003	EP1332480A1 System for real-time location of people in a fixed environment
08/06/2003	CN2564710Y Building electronic door possessing intercom with protective cover
07/2003
07/15/2003	US6594688 Dedicated echo canceler for a workstation
07/02/2003	CN1113480C Transponder communication device
06/2003
06/18/2003	CN2556881Y Intercom for use in realestate
06/17/2003	US6580358 Dual mode transmitter-receiver and decoder for RF transponder tags
05/2003
05/21/2003	CN2552274Y Multi-channel controllable intercom
05/14/2003	EP0815622B1 Cross-connect method and apparatus
04/2003
04/16/2003	CN1411288A Intercom crystal oscillator digital temperature compensating method and its system
03/2003
03/25/2003	US6539086 System and method for completing two calls using analog interface to telephone network
03/12/2003	CN1402451A Method for supporting part of routing for integral service digital network user of multiple medium gateway
03/11/2003	US6531957 Dual mode transmitter-receiver and decoder for RF transponder tags
03/05/2003	CN2539364Y Synchronous visable intercommunication wireless monitoring system for material hoister
03/05/2003	CN1400768A Line connecting controller

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