| 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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| 04/09/2013 | US8416062 Method and apparatus for improving RFID tag reading |
| 04/09/2013 | US8416060 Method and device for reading radio frequency identification (RFID) tags |
| 04/09/2013 | US8416059 RFID system housing |
| 04/03/2013 | CN202856982U Intelligent wireless paging system |
| 04/03/2013 | CN202856927U Railway safety protection operation monitoring system |
| 04/03/2013 | CN202851082U Communication signal control device |
| 04/03/2013 | CN103024355A Video monitoring and walkie-talkie network system used for high-rise building construction |
| 04/02/2013 | US8412261 Coupling apparatus for dividing receiving and transmitting signals and control method thereof |
| 04/02/2013 | US8411764 System and method for multi-protocol radio-frequency identification |
| 04/02/2013 | US8410912 Printing device |
| 04/02/2013 | US8410911 RFID network system |
| 04/02/2013 | US8410910 Passive contactless integrated circuit comprising a flag for monitoring an erase/programming voltage |
| 04/02/2013 | US8410909 Cables and connector assemblies employing a furcation tube(s) for radio-frequency identification (RFID)-equipped connectors, and related systems and methods |
| 04/02/2013 | US8410908 Method and device for emulating multiple RFID tags within a single mobile electronic device |
| 04/02/2013 | US8410907 Event-driven mobile HAZMAT monitoring |
| 04/02/2013 | US8410906 Battery assisted RFID system RF power control and interference mitigation methods |
| 04/02/2013 | US8410905 RFID reader cancelling leakage signal |
| 04/02/2013 | US8410899 Automobile keyless entry system having an RFID interrogator |
| 03/28/2013 | WO2012156988A3 Low power analog fm transceiver for bio-telemetry applications |
| 03/27/2013 | CN202841429U Fully-digital wireless talkback system for elevator |
| 03/27/2013 | CN202841428U Conversation display |
| 03/27/2013 | CN202841427U 语音通讯控制器 Voice Communication Controller |
| 03/27/2013 | CN202841426U 智能楼宇对讲系统 Intelligent building intercom system |
| 03/27/2013 | CN202841425U Underground wireless intercommunication communication system |
| 03/27/2013 | CN202841294U Verbal device and system |
| 03/27/2013 | CN202841174U Double-network digital intercom system |
| 03/27/2013 | CN202839803U Battery opening mechanism of electronic handheld device |
| 03/27/2013 | CN202829184U 施工电梯无线呼叫系统 Construction elevator wireless call system |
| 03/27/2013 | CN103002357A Medical calling talkback system |
| 03/27/2013 | CN101252377B Earphone equipment and method for communication terminal to realize voice intercommunication traffic using the same |
| 03/26/2013 | US8405487 RFID sensor tag and sensor data storing method |
| 03/26/2013 | US8405486 Electric power transmitting and receiving device, electric power transmitting device and electric power receiving device |
| 03/21/2013 | US20130070100 Systems and Methods for Programming a Remote Control Device |
| 03/20/2013 | CN202818572U Card-inserted sound box with intercom function |
| 03/20/2013 | CN202818527U 数字楼宇对讲系统 Digital building intercom system |
| 03/20/2013 | CN202818375U Passenger emergency communication unit and passenger emergency communication system comprising the same |
| 03/20/2013 | CN102984602A Method for generating interphone sub-audio frequency and device for processing digital signal |
| 03/20/2013 | CN102984339A Method capable of increasing mobile phone talkback function and expanding mobile phone use range |
| 03/20/2013 | CN102984291A Addressing method based on building intercom system, terminal and building intercom system |
| 03/19/2013 | US8400307 Radio frequency IC device and electronic apparatus |
| 03/19/2013 | US8400280 Display tag, display tag system having display tag, and method for writing display tag information |
| 03/19/2013 | US8400279 Wireless communication tag and wireless communication system |
| 03/19/2013 | US8400278 Semiconductor device and IC label, IC tag, and IC card having the same |
| 03/19/2013 | US8400276 Monitoring system, terminal device and main control device thereof, and method and program for registering terminal device |
| 03/19/2013 | US8400275 Method and system of utilizing RFID tags for jointly processing task |
| 03/19/2013 | US8400274 Accurate persistent nodes |
| 03/19/2013 | US8400273 Device for reading radio frequency identifiers for volumetric confining of the detection region |
| 03/19/2013 | US8400272 Method and device for improving the signal to noise ratio (SNR) of a backscatter signal received from a radio frequency identification (RFID) tag |
| 03/19/2013 | US8400270 Systems and methods for determining an operating state using RFID |
| 03/19/2013 | US8400269 Methods and systems using polarization modulated electromagnetic waves |
| 03/13/2013 | CN202799019U Mine locomotive voice communication device |
| 03/13/2013 | CN202796682U Multifunctional switch adjusting mechanism of electronic handheld device |
| 03/13/2013 | CN202788044U Police room |
| 03/13/2013 | CN102970620A Network-based visual voice intercom method |
| 03/12/2013 | US8395525 Extending the read range of passive RFID tags |
| 03/12/2013 | US8395506 Method and system for identifying missing items |
| 03/12/2013 | US8395488 Method for storing data as well as a transponder, a read/write-device, a computer readable medium including a program element and such a program element adapted to perform this method |
| 03/12/2013 | US8395487 Data carrier with sensor |
| 03/12/2013 | US8395486 System and method for interactive user-directed interfacing between handheld devices and RFID media |
| 03/12/2013 | US8395485 Inductive evaluation of the coupling factor of an electromagnetic transponder |
| 03/12/2013 | US8395484 System and method for monitoring objects, people, animals or places |
| 03/12/2013 | US8395483 Power controller for an electronic reader device |
| 03/12/2013 | US8395482 RFID systems using distributed exciter network |
| 03/12/2013 | US8395481 Apparatus for recognizing radio frequency identification (RFID) and method thereof, and data processing method of RFID |
| 03/12/2013 | US8395480 Low-frequency tag system and method |
| 03/12/2013 | US8395477 Geographic based remote control |
| 03/12/2013 | US8393532 Use of peer maintained file to improve beacon position tracking utilizing spatial probabilities |
| 03/07/2013 | US20130057394 Method and Apparatus for Providing Context Sensing and Fusion |
| 03/06/2013 | CN202773029U Single data bus transmitting and receiving circuit |
| 03/06/2013 | CN202773028U Single sound line anti-sidetone circuit |
| 03/06/2013 | CN202773027U Voice transmission device based on building intercom system, and building intercom system |
| 03/06/2013 | CN202771509U Intelligent building visual intercom system adopting finger vein recognition |
| 03/05/2013 | US8391824 End of modulation detection |
| 03/05/2013 | US8390456 RFID tag facility with access to external devices |
| 03/05/2013 | US8390433 Method and system for low cost, power efficient, wireless transponder devices with enhanced functionality |
| 03/05/2013 | US8390431 RFID tags that backscatter more codes |
| 03/05/2013 | US8390430 RFID readers mitigating colored noise |
| 03/05/2013 | US8390429 Mobile RFID monitoring system and method thereof |
| 03/05/2013 | US8390425 RFID reader systems with double conversion and methods |
| 02/28/2013 | US20130049967 System and method for controlling and managing medical supplies stored inside medical refrigerator or freezer |
| 02/27/2013 | CN102946572A Wireless interphone signal transmission method based on transfer platform |
| 02/27/2013 | CN102946304A TDD (Time Division Duplex) transmission method for digital interphone |
| 02/26/2013 | US8384525 Contactless programming and testing of memory elements |
| 02/26/2013 | US8384524 Passive surface acoustic wave sensing system |
| 02/26/2013 | US8384523 Battery assisted RFID system command set |
| 02/26/2013 | US8384522 Radio frequency identification triangulation systems for communications patching systems and related methods of determining patch cord connectivity information |
| 02/26/2013 | US8384521 Systems, methods, and apparatus for RFID tag detection |
| 02/26/2013 | US8384520 Glazing comprising an electronic device and method of reading/writing information in said device |
| 02/26/2013 | US8384519 Reader device for radio frequency identification transponder with transponder functionality |
| 02/26/2013 | US8381974 Emulated radio frequency identification |
| 02/21/2013 | US20130043983 Printed Label-to-RFID Tag Data Translation Apparatus and Method |
| 02/21/2013 | US20130043981 Encoded information reading terminal with multi-directional antenna |
| 02/21/2013 | US20130043980 Encoded information reading terminal with micro-electromechanical radio frequency front end |
| 02/21/2013 | US20130043979 Display method for electronic paper label apparatus |
| 02/20/2013 | CN202750150U Gateway apparatus using telephone set as residential quarter interphone extension set |
| 02/20/2013 | CN202750144U Walkie-talkie mobile phone |
| 02/20/2013 | CN202748781U Direct-press host system |
| 02/20/2013 | CN102938747A Digital interphone signal demodulation device |
| 02/19/2013 | US8379859 Method and apparatus for ciphering data in wireless communication system |
| 02/19/2013 | US8378827 Two-dimensional antenna configuration |