Patents
Sitemap › H04 - Electric communication technique › H04Q - Selecting › 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)
11/2012
11/14/2012CN202535350U Digital wire interphone
11/14/2012CN102780667A Method and equipment for modulating physical layer of digital interphone
11/14/2012CN102779464A Multifunctional electronic tour-guide flag
11/14/2012CN101527869B Entryway communication system
11/13/2012US8310366 RFID device and related method for providing assistance for locating it
11/13/2012US8310347 Incrementing counter with extended write endurance
11/13/2012US8310346 Verification of movement of items
11/13/2012US8310345 Receiving apparatus
11/13/2012US8310344 Long range radio frequency identification system
11/13/2012US8310343 Binary tree method for multi-tag anti-collision
11/13/2012US8310342 Identification anti-collision method and radio frequency identification system using the same
11/08/2012US20120280799 Rule-based tracking of products based on intelligent identifiers
11/08/2012US20120280794 Method and device for amplitude modulation of an electromagnetic signal emitted by a contactless transceiver system
11/07/2012CN202524522U Telephone building intercom device with secondary identity card gate inhibition function
11/07/2012CN202524436U Belt clip for handheld two-way radio
11/07/2012CN202524412U Ethernet park weak current intelligentization system based on coaxial cable framework
11/07/2012CN102769805A Visual inter-conversation device, visual inter-conversation system and visual inter-conversation signal transmission method
11/06/2012US8305198 Adaptive control for improved RFID transponder read and write performance
11/06/2012US8305197 Article management system, and portable apparatus for communicating with RFID tag
11/06/2012US8305195 Radio frequency identification communication system and method thereof
11/06/2012US8305194 Collision resolution protocol for mobile RFID tag identification
11/06/2012US8305193 RFID protection device, and related methods
11/06/2012US8305192 RFID reader with automatic near/far field interrogation mode switching, and related operating methods
11/06/2012US8305191 Semiconductor device and position detection system using semiconductor device
11/06/2012US8305190 Method and apparatus for power management for a radio frequency identification system
11/01/2012WO2012149008A2 Wireless sensor reader
11/01/2012US20120274449 Method and Apparatus Pertaining to Radio-Frequency Identification Tags
11/01/2012CA2834350A1 Wireless sensor reader
10/2012
10/31/2012CN202514033U Community security intercom system
10/31/2012CN202514027U Multifunctional household set-top box
10/31/2012CN202513981U Building intercom system without indoor dedicated extension
10/31/2012CN202509877U Remote-control talkback type intelligent theftproof lock
10/31/2012CN102761791A Household controllable calling device
10/31/2012CN102761658A Method and device for performing voice talkback through mobile terminal
10/30/2012US8301162 Tag frequency control
10/30/2012US8299900 Anonymous tracking using a set of wireless devices
10/30/2012US8299899 AIMD external programmer incorporating a multifunction RFID reader having a limited transmit time and a time-out period
10/30/2012US8299898 Apparatus and method for managing radio frequency indentification reader
10/25/2012US20120268255 Method and system for managing objects in a plurality of distribution platforms
10/25/2012US20120268251 Wireless identification tag having circularly polarized planar antenna
10/24/2012CN202503629U Digital interphone with digital and analog hybrid receiving function
10/24/2012CN202503628U Digital interphone adopting self-adaption vocoder
10/24/2012CN202503627U Wireless visible dialogue system
10/24/2012CN102752673A Novel interphone
10/23/2012US8294579 Multiple radio frequency network node RFID tag
10/23/2012US8294555 Communication system for inductive power transfer system
10/23/2012US8294554 RFID location systems and methods
10/18/2012US20120262281 System and method for in-box electronic device provisioning
10/18/2012US20120262279 System and method for identifying a genuine printed document
10/17/2012CN202496039U Vehicle communication device integration box
10/17/2012CN202495945U Mine-used broadcast intercommunication system
10/17/2012CN202495085U Service system for elder residents in district
10/17/2012CN102735981A Talkback wire corrector
10/17/2012CN102735236A Mutual positioning system for multi-vehicle trip
10/17/2012CN101754052B Network fault-tolerant intercom equipment, security intercom system and realization method thereof
10/16/2012US8290601 Plant control system
10/16/2012US8289138 Wireless communications unit operating as a tag when a host device is turned off
10/11/2012US20120256731 Golf ball with rfid inlay in a molded impression
10/11/2012US20120256726 Method, apparatus, and computer program product for special dedicated inquiry and inquiry response process for dedicated device search
10/10/2012CN202488625U Digital visible building intercommunication device based on plastic fiber transmission data
10/10/2012CN202488445U Novel interphone
10/10/2012CN202488442U Pluggable wireless transceiver card with proprietary definition
10/10/2012CN202488441U Receiver and signal transmission devices in interphone
10/10/2012CN202488440U Modulator-demodulator decoding deck
10/10/2012CN102724358A Method for implementing door control talkback, mobile terminal and door control interphone
10/09/2012US8284055 Multiple radio frequency network node RFID tag
10/09/2012US8284034 Methods and apparatuses to identify devices
10/09/2012US8284033 Object tracking
10/09/2012US8284032 Method and apparatus for signal detection in radio frequency identification system
10/09/2012US8284031 Systems and methods for providing quality of service to RFID
10/09/2012US8284030 Method and device for recognizing functional states in RFID or remote sensor systems
10/09/2012US8284028 Method of manufacturing an identifiable roofing product including a roofing product and a process plant for carrying out the method
10/09/2012US8284027 Position detecting system, responder and interrogator, wireless communication system, position detecting method, position detecting program, and information recording medium
10/04/2012US20120249305 Wireless tag processor
10/04/2012US20120249304 Document with Inductive Charging and Data Storage and Transmission
10/03/2012CN202475701U Building intercom system with call forwarding function
10/03/2012CN202475700U Interphone with flashlight
10/03/2012CN202475699U Building intercommunication device about network voice protocol and public switched telephone network
10/03/2012CN202475698U Building intercommunication device about network voice protocol
10/03/2012CN202475574U Echo-cancelling talkback equipment
10/03/2012CN202472773U Talkback-based single-family entrance guard
10/03/2012CN102711007A Handheld microphone with talkback function
10/03/2012CN102710995A Talkback and video data transmitting method based on wireless local area network, and talkback commutator
10/03/2012CN102710932A Underground wireless communication system
10/03/2012CN102710843A Visual fixed-line telephone
10/03/2012CN102710821A Hand microphone for interphone and interphone
10/02/2012US8279072 System to monitor a consumable part and method to monitor performance life and predict maintenance thereof
10/02/2012US8279068 Automatic surgical sponge counter and blood loss determination system
10/02/2012US8279065 Methods and systems of a multiple radio frequency network node RFID tag
10/02/2012US8279048 RFID tag with piezoelectric sensor for power and input data
10/02/2012US8279047 Methods and apparatus for anti-collision for radio frequency communication
10/02/2012US8279046 Radio communication apparatus, radio communication method, and radio communication system
10/02/2012US8279045 RFID tag chips and tags refraining from participating in a subsequent inventorying attempt and methods
09/2012
09/27/2012US20120242460 Method and system for identifying items
09/27/2012US20120242456 Rfid module
09/27/2012US20120242455 Apparatus, systems and methods for pairing a controlled device with an rf remote control using an rfid tag
09/27/2012US20120242454 Method and system for wireless communications in a waveguide environment
09/26/2012CN202455486U 施工升降机呼叫装置 Construction elevator call device
09/26/2012CN102695125A Wireless interphone sending positional information and identity code and method therefor
09/26/2012CN102695100A Position interaction talkback terminal based on interphone network and application system thereof
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