Patents for H04Q 5 - Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange (6,717) |
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09/25/2012 | US8275862 RFID tag information service system |
09/25/2012 | US8274395 Battery monitoring systems and methods |
09/25/2012 | US8274374 Synchronization method between reader and tag |
09/25/2012 | US8274373 Dual mode transmitter-receiver and decoder for RF transponder tags |
09/25/2012 | US8274370 Modulator and modulation method for a wireless data transmission device |
09/25/2012 | US8274369 Radio frequency identification device having nonvolatile ferroelectric memory |
09/25/2012 | US8274368 Chipless microwave identification tag |
09/25/2012 | US8274367 RFID system and RFID tag |
09/25/2012 | US8274366 Method and apparatus for RF access to system ID and fault information |
09/20/2012 | WO2012125046A1 Method and system for processing telephony calls |
09/20/2012 | US20120235799 Rfid reader/writer, rfid system, and communication method |
09/20/2012 | US20120235791 Transportation route management |
09/20/2012 | US20120234928 Method for encoding contactless communication data from a transponder to a reader via charge modulation, in the form of a set of patterns and device for implementing same |
09/19/2012 | CN202444584U Interconnection converter for digital media receiver (DMR) digital system and NXDN digital system |
09/19/2012 | CN202444583U Wireless storey call system on variable-frequency construction hoist |
09/19/2012 | CN202444582U Digital wired interphone |
09/19/2012 | CN202444488U Digital intercommunication relay equipment |
09/19/2012 | CN102685609A Multi-protocol soft-core digital interphone |
09/19/2012 | CN102684734A Multifunctional two way radio shoulder microphone |
09/18/2012 | US8269630 Methods and systems of a multiple radio frequency network node RFID tag |
09/18/2012 | US8269611 Electronic tag reading/writing station |
09/18/2012 | US8269610 Method for measuring pressure in a tire |
09/18/2012 | US8269609 Devices, systems and methods for portable device location |
09/18/2012 | US8269608 Device and method of coupling a processor to an RFID tag |
09/18/2012 | US8269607 Proximity location system and method thereof for locating a communications device |
09/18/2012 | US8269606 Methods and systems for RFID tag read verification |
09/18/2012 | US8269605 RFID material tracking method and apparatus |
09/18/2012 | US8269604 Remotely monitoring field assets |
09/18/2012 | US8267319 Antenna, and radio frequency identifying device and method |
09/12/2012 | CN202435612U Public mobile data network-based talkback equipment |
09/12/2012 | CN202435544U Building intercom system using GSM mobile communication protocol |
09/12/2012 | CN202435543U Handheld interphone |
09/12/2012 | CN102665175A Method for realizing vehicle-mounted voice intercom by using mobile network |
09/12/2012 | CN102665146A Intercom with camera function |
09/12/2012 | CN102665145A Underground wireless talkback communication system based on photon switching |
09/12/2012 | CN102665144A Communication system consisting of desk-top ground single-channel base station and walkie talkies |
09/12/2012 | CN102664940A Multipoint medical safety calling information system |
09/12/2012 | CN102664780A Wireless interphone monitoring system based on mobile access protocol (MAP) 27 protocol |
09/12/2012 | CN102664651A Wireless calling and answering system with display interface |
09/11/2012 | US8264331 Method and apparatus for detecting container movement by a crane |
09/11/2012 | US8264330 Systems and method for communicating data in a railroad system |
09/11/2012 | US8264329 Method and system for room activity communication |
09/11/2012 | US8264321 System and method for enhanced RFID instrument security |
09/11/2012 | US8264319 Location system and communication system |
09/07/2012 | WO2012118448A1 Communication devices and methods for performing communication |
09/06/2012 | US20120223819 Near Field Communication Event Attendee Tracking System |
09/06/2012 | US20120223818 Data random selection device |
09/06/2012 | US20120223811 Multiple Antenna Localizing |
09/05/2012 | CN202424965U Multimode interphone |
09/05/2012 | CN202424964U Wireless digital talkback microphone system |
09/05/2012 | CN202424842U Network-based interphone system |
09/05/2012 | CN202424793U Frequency conversion circuit for remote interphones with low power consumption, high sensitivity and low distortion |
09/05/2012 | CN202424709U Interphone application circuit |
09/04/2012 | US8260204 Wireless communication system using surface acoustic wave (SAW) second harmonic techniques |
09/04/2012 | US8260201 Dispersive antenna for RFID tags |
09/04/2012 | US8258927 Method and system for inventorying wireless transponders providing anti-eavesdropping anti-collision |
09/04/2012 | US8258926 Method for automatically checking in passengers and their luggage |
09/04/2012 | US8258925 Frequency synthesizer and frequency synthesizing method |
09/04/2012 | US8258924 Merchandise-integral transaction receipt |
09/04/2012 | US8258922 Electronic device with remote control function |
08/30/2012 | US20120218084 Method and apparatus for presenting printed media based on radio frequency memory tag detection |
08/30/2012 | US20120218082 Communications system including display with nfc device associated therewith and associated methods |
08/29/2012 | CN202406248U Digital interphone |
08/29/2012 | CN102651919A Device for realizing communication between 350M analog cluster talkback system and POC (PTT Over Celluar) talkback system |
08/28/2012 | US8253567 Multiple radio frequency network node RFID tag |
08/28/2012 | US8253543 RFID tag identification information management system |
08/28/2012 | US8253542 Method and system for performing affinity transactions |
08/28/2012 | US8253541 Method and apparatus for varying signals transmitted by a tag |
08/28/2012 | US8253540 Method of reading data from transponders through a reader, a transponder, and a reader |
08/28/2012 | US8253539 Rfid reader management system and method |
08/28/2012 | US8253538 Asset management using mobile radio-frequency identification (RFID) readers |
08/28/2012 | US8253537 Apparatus for communicating with RFID tag and article management system |
08/28/2012 | US8253533 Locker system and method |
08/28/2012 | US8251284 Covers having RFID functionality for portable electronic devices |
08/23/2012 | WO2012112843A2 System and method for tracking pipe activity on a rig |
08/23/2012 | US20120212330 Antenna, apparatus and method for identifying and tracking multiple items |
08/23/2012 | US20120212329 Method and apparatus to detect transponder tagged objects, for example during medical procedures |
08/23/2012 | US20120212328 Method and apparatus to detect transponder tagged objects, for example during medical procedures |
08/23/2012 | US20120212326 System and method for tracking pipe activity on a rig |
08/23/2012 | US20120212325 Communication apparatus, communication system, and communication method |
08/22/2012 | CN202395933U Digital duplex remote networking wired interphone |
08/22/2012 | CN202395932U Wireless cluster intercom system and wireless earphone headset and receiver |
08/22/2012 | CN202395931U Digitalized internet protocol (IP) network broadcast system |
08/22/2012 | CN202395822U Multifunctional integrated interphone |
08/22/2012 | CN102647652A Audio acquisition and processing circuit for vehicle-mounted talkback system |
08/21/2012 | US8248239 Multiple radio frequency network node RFID tag |
08/21/2012 | US8248238 Multiple radio frequency network node RFID tag |
08/21/2012 | US8248214 Adjustable lighting for displaying products |
08/21/2012 | US8248213 Deterministic method for efficiently querying and identifying multiple items on a communication channel |
08/21/2012 | US8248212 Pipelining processes in a RF reader |
08/21/2012 | US8248211 Selective RF device activation |
08/21/2012 | US8248210 Method and system to determine the position, orientation, size, and movement of RFID tagged objects |
08/21/2012 | US8248209 Device for communicating between a mobile element and a fixed element |
08/21/2012 | US8248208 RFID-based active labeling system for telecommunication systems |
08/21/2012 | US8248204 Tag detecting system, moving object detecting method, and entrance/exit management system |
08/16/2012 | US20120206238 Antenna for protecting radio frequency communications |
08/16/2012 | US20120206237 On-premises restaurant communication system and method |
08/15/2012 | CN102640516A Apparatus and method using histogram-based techniques for avoiding overpolling |
08/15/2012 | CN102638732A Building intercom system with resident cellphone used for intercommunicating with visitors and opening gate at stairs |
08/15/2012 | CN102638287A Compact type interphone convenient to use |