Patents
Patents for H04Q 5 - Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange (6,717)
02/2013
02/19/2013US8378824 Image-forming system
02/19/2013US8378790 Reader control system
02/19/2013US8378789 RFID material tracking method and apparatus
02/19/2013US8378788 Variable frequency tag
02/19/2013US8378787 Method and apparatus for disabling a data tag device
02/19/2013US8378786 Security provision in standards-compliant RFID systems
02/14/2013WO2013023079A1 Backscatter stylus for use with touchscreen
02/14/2013US20130041524 Smart trailer rfid system
02/13/2013CN202738050U Building intercommunication system capable of monitoring air PM2.5 concentration values
02/13/2013CN202738049U Bank interphone system
02/13/2013CN202737892U 网络中央控制器系统 Network Central Controller System
02/13/2013CN202737814U Self adaptive power amplifying circuit of UHF (ultra high frequency) band wireless digital interphone
02/13/2013CN102036125B Portable digital radio group navigation system
02/13/2013CN101278570B Truncation, compression, and encryption of rfid tag communications
02/12/2013US8373562 Asset tracking system
02/12/2013US8373545 EPC provisioning system using business rules
02/12/2013US8373544 RFID apparatus
02/12/2013US8373543 RFID transponder using ambient radiation
02/12/2013US8373542 All-in-one radio frequency identification (RFID) system for sale and inventory management
02/06/2013CN102917281A Electronic-type special wireless calling method
02/06/2013CN102917280A Method for automatic commissioning test of interphone
02/06/2013CN102917279A Subaudio frequency matching method and terminal
02/06/2013CN102917278A Regional communication system with unilateral mandatory broadcast function
02/05/2013US8369944 Wearable defibrillator with audio input/output
02/05/2013US8368541 Method for memory mapping in a composite RFID tag facility
02/05/2013US8368540 Wireless tracking system and method utilizing near-field communication devices
02/05/2013US8368519 Packaging a semiconductor wafer
02/05/2013US8368517 RFID privacy-preserving authentication system and method
02/05/2013US8368516 Secure data exchange with a transponder
02/05/2013US8368515 Dual mode RFID communication device operating as a reader or tag
02/05/2013US8368514 Device for wireless operation and method for operating the device
02/05/2013US8368513 Data separation in high density environments
02/05/2013US8368512 RFID tag, method of manufacturing the RFID tag, and method of mounting the RFID tag
02/05/2013US8368511 Method for monitoring a package, sentinel indicator system and logistics system
01/2013
01/31/2013US20130027189 Electronic price label system
01/31/2013US20130027187 Security kiosk
01/31/2013US20130027186 Ultralow-power implantable hub-based wireless implantable sensor communication
01/30/2013CN202713549U Noise and echo eliminating circuit of network broadcast talkback communication station
01/30/2013CN202713548U Hand-held wireless interphone
01/30/2013CN202713547U Digital unidirectional broadcast terminal
01/30/2013CN102904898A Communication method and communication device of building intercom system
01/29/2013US8363254 Document management system
01/29/2013US8362881 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
01/29/2013US8362880 Method and computer program product for loading and executing program code at micro-processor
01/29/2013US8362879 Apparatus and method for integrated reader and tag
01/29/2013US8362878 Towel tracking system
01/23/2013CN202696827U Wireless control microphone
01/23/2013CN202696786U Portable wireless bidirectional intercommunication patrol terminal
01/23/2013CN202694568U Auxiliary taxi calling system
01/22/2013US8358202 Semiconductor device
01/17/2013US20130015959 Rfid tag issuing apparatus and rfid tag misalignment detecting method
01/16/2013CN202679548U Two-way intercommunication system for coal mine
01/16/2013CN202679547U Signal input frequency selector for frequency modulation interphone
01/16/2013CN202679546U Tower operation multichannel multidirection communication system
01/16/2013CN202679545U Industrial sound amplification broadcast intercommunication system
01/16/2013CN202679544U Finance business management infrared intercommunication system apparatus based on phase-locked loop technology
01/16/2013CN202679543U Remote intercommunication connection device and remote intercommunication system
01/16/2013CN202679409U A real-time voice intercom system based on a heterogenous mobile IP network
01/16/2013CN202679354U Frequency selector for frequency modulation interphone
01/16/2013CN202677541U Digital acousto-optic signal device
01/16/2013CN102883233A Building intercom system and indoor machine/door phone
01/15/2013US8354918 Light, sound, and motion receiver devices
01/15/2013US8354917 RFID tag chips and tags complying with only a limited number of remaining commands and methods
01/15/2013US8354916 Radio interrogator system and radio communication method therefor
01/10/2013US20130009749 Method of neighborhood watch implemented in-part with electronic surveillance system
01/09/2013CN202663515U Multifunctional microphone of police vehicle-mounted central control system
01/09/2013CN202663494U Face recognition visible interphone for building
01/09/2013CN102868975A Interphone with embedded global system for mobile communications (GSM) module
01/09/2013CN102868942A Voice transmission method and device based on building intercom system, and building intercom system
01/09/2013CN102868941A Controllable interphone and method for realizing control safety communication of interphones
01/09/2013CN102868940A Simple simplex wireless paging system
01/09/2013CN102868838A Gateway device capable of taking telephone as branch cell interphone and control method thereof
01/08/2013US8350677 System and method for integrating asset tagging with a manufacturing process
01/08/2013US8350676 System and method for allowing multiple RFID reader devices to read RFID tags without collision
01/08/2013US8350674 RFID tag including a loop antenna and RFID system using the RFID tag
01/08/2013US8350673 Methods and apparatus for preserving privacy in an RFID system
01/08/2013US8350668 Smartcard protocol transmitter
01/08/2013US8350665 RFID reader systems detecting pilot tone
01/03/2013US20130002407 Rf-link margin measurement method and system
01/03/2013US20130002406 Electronic label system and operation method thereof
01/03/2013US20130002405 Method and apparatus for sensory tags providing sound, smell and haptic feedback
01/02/2013CN202652476U Hand-held microphone with intercommunication function
01/02/2013CN202652447U Multifunctional interphone for train wireless dispatching
01/02/2013CN202652446U Multipurpose interphone
01/02/2013CN202652445U Hand-held interphone
01/02/2013CN202652444U Multifunctional interphone shoulder microphone
01/02/2013CN202652443U Video intercommunication telephone adapter
01/02/2013CN202652442U Wireless interphone monitoring system based on MAP 27 protocol
01/02/2013CN202652441U Portable Bluetooth cluster full-duplex intercom
01/02/2013CN202652423U Window interphone
01/02/2013CN202652402U Video intercommunication management center machine capable of simultaneously accessing video pictures from four channels
01/02/2013CN202652206U Modular wireless interphone used for teaching
01/02/2013CN202652201U Interphone for railway dangerous situation positioning and safety warning
01/02/2013CN102147605B Scatter centralized control method for equipment monitoring and automatic calling unit
01/02/2013CN101998114B Visual talkback method and system
01/01/2013US8346210 Method and apparatus for managing services using bearer tags
01/01/2013US8344889 Side loaded shorted patch RFID tag
01/01/2013US8344858 Steerable phase array antenna RFID tag locater and tracking system and methods
01/01/2013US8344857 RFID tags with synchronous power rectifier
01/01/2013US8344856 Position detecting system and cable unit
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