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)
04/2014
04/22/2014US8704640 Passive wireless memory device
04/22/2014US8704639 Management control of household appliances using RFID communication
04/17/2014WO2012103167A3 Design and authorization system for wireless control
04/16/2014CN203554633U Interphone, base station, and Ad-Hoc network system thereof
04/16/2014CN203554469U Wireless broadcast system based on digital interphone
04/16/2014CN103731761A Method and system for building talkback
04/16/2014CN103731560A Electronic device and control method thereof
04/15/2014US8698629 RFID readers with encapsulating commands
04/15/2014US8698605 Determining the validity of a connection between a reader and a transponder
04/15/2014US8698604 Reader control system
04/15/2014US8698601 Method for card-reading anti-collision with automatic frequency hopping
04/15/2014US8698600 Method and circuit for accessing RFID tag
04/15/2014US8698599 Reader/writer, communication processing device, communication processing method, data management system and communication system
04/15/2014US8698595 System and method for enhanced RFID instrument security
04/09/2014CN103716459A Audio system having mobile phone and intercom call functions
04/08/2014US8692654 RFID system with multiple reader transmit frequencies
04/08/2014US8692653 Semiconductor device
04/03/2014WO2014052000A1 Promotional code distribution using mobile devices
04/02/2014CN203522964U Industrial intercom combination and separation apparatus
04/02/2014CN203522963U Building interphone value-added system
04/02/2014CN203522962U Digital hand-held radio designed with double PPT buttons
04/02/2014CN203522961U Interphone
04/02/2014CN203522759U Mining intelligent broadcast intercommunication system
04/02/2014CN203522749U Infrared-ray full-duplex intercom circuit
04/02/2014CN203522737U Multi-party intercommunication bluetooth headset
04/02/2014CN103700166A Access control monitoring method, access control device and access control system
04/01/2014US8686835 Baggage arrangement management method and carrying apparatus
04/01/2014US8686834 Terminal having radio frequency function and method of processing information of the terminal
03/2014
03/26/2014CN203504757U Cluster talkback gateway equipment system
03/26/2014CN203504706U Internal intercom system based on PON
03/26/2014CN203504705U Building intercom terminal with two nonpolar lines
03/26/2014CN203504704U Building intercom system with two nonpolar lines
03/26/2014CN103686461A Method and device for intelligent doorbell talkback on basis of passive optical network (PON) access network
03/26/2014CN103686460A Talkback extension set with wireless router function
03/26/2014CN103686459A Smart building intercom system based on SIP application service unit
03/26/2014CN103685478A Cloud computing based intelligent building intercom system
03/26/2014CN103679907A Biological information identification method and biological information identification system applied to building talk-back
03/26/2014CN102547487B Private network talkback method and private network talkback transmission system based on wireless local area network
03/26/2014CN102158769B Method and system for realizing remote inquiry and control of interphone
03/25/2014US8681001 Method and apparatus for optimizing reader power consumption by varying poll parameters in an automated inventory tracking system
03/25/2014US8680970 RFID systems using distributed exciter network
03/19/2014CN203492185U Audio output circuit of alarm intercom
03/19/2014CN203492163U Wireless communication system in underground mine
03/19/2014CN203492080U Audio detection circuit of alarm intercom
03/19/2014CN103648061A Community local area network and Internet based smartphone and tablet audio and video intercom system
03/19/2014CN103648060A Community internet of things system, public machine and method for calling indoor unit thereof
03/19/2014CN103647594A Wireless communication system applied to building blind area environment
03/18/2014US8674812 Method of controlling communication
03/18/2014US8674811 Control method for RFID tag and RFID system thereof
03/18/2014US8674810 Wearable RFID system
03/18/2014US8674808 Interrogation of RFID communication units
03/18/2014US8674807 Method, system and devices for data acquisition
03/13/2014US20140074667 System and Method for Inventory Control of Mobile Assets
03/12/2014CN203482352U Intercommunication telephone device
03/12/2014CN203482330U Wireless visual doorbell
03/12/2014CN203482193U Helmet individual propaganda megaphone
03/12/2014CN103634705A Outdoor unit mounting and dismounting structure
03/11/2014US8669850 Method for adjusting the transmission time of a continuous wave and reader thereof
03/11/2014US8669849 Methods and systems for using RFID in biological field
03/11/2014US8669848 Methods and systems for using RFID in biological field
03/11/2014US8669847 Method and device for identifying a tag based on the orientation of fibers
03/11/2014US8669846 Wireless devices for process automation and verification
03/05/2014CN203466912U Visual intercom stair portal machine
03/05/2014CN103617575A Construction management system
03/04/2014US8665074 RFID tag chips and tags with alternative behaviors and methods
03/04/2014US8665073 Truncation, compression, and encryption of RFID tag communications
03/04/2014US8665072 Electronic monitoring systems, shipment container monitoring systems and methods of monitoring a shipment in a container
03/04/2014US8665071 Methods and systems for using RFID in biological field
03/04/2014US8665070 Mobile electronic device
03/04/2014US8665069 RFID tag especially for use near conductive objects
03/04/2014US8665068 Systems and/or methods of data acquisition from a transceiver
03/04/2014US8665067 Systems and methods for object localization and path identification based on RFID sensing
03/04/2014US8665066 Reader control system
02/2014
02/27/2014US20140055243 Method and apparatus for secure asset tracking
02/26/2014CN203457270U Bluetooth-based multi-person intercommunication base station
02/26/2014CN203457256U 4g远程视频管理系统 4g remote video management system
02/26/2014CN203457250U Intelligent video intercommunication security system
02/26/2014CN203457114U Signal amplifier of interphone
02/26/2014CN203456927U Hand-operated charging interphone
02/26/2014CN103609137A 背景物体传感器 Background objects sensor
02/26/2014CN103609136A Method for in-situ upgrading RFID readers
02/26/2014CN103607669A Detection method and detection system for audio frequency transmission characteristics of building intercom system
02/25/2014US8660538 Method of communicating business contact information to a wireless user
02/25/2014US8659398 System and method for buffered wireless device enrollment in a security system
02/25/2014US8659397 Method and system for correctly identifying specific RFID tags
02/25/2014US8659395 Container for receiving articles
02/25/2014US8659394 RFID tag and method receiving RFID tag signal
02/25/2014US8659393 Methods and systems for positioning data fields of a radio-frequency identification (RFID) tag
02/19/2014CN203445894U Hand-held broadband line testing instrument
02/19/2014CN203445874U 蓝牙对讲机 Bluetooth interphone
02/19/2014CN203445868U Interphone repeater
02/19/2014CN103595489A Underwater talkback system based on optical fiber sensing technology
02/19/2014CN103595437A Multimedia interphone capable of receiving analog and digital signals in multiple frequency bands simultaneously
02/18/2014US8653955 Method, device and system for exchanging information between a vehicle and a mobile ID provider
02/18/2014US8653948 Reader control system
02/18/2014US8653947 Radio frequency identification system and tag counting ending method for anti-collision thereof
02/18/2014US8653946 Passive RFID reader and operation control method therefor
02/18/2014US8653945 Apparatus for managing the operation of a ship block
02/18/2014US8653944 RFID device and methods for controlling power supply according to connection with host and operation mode
02/18/2014US8653943 Radio frequency identification system provided for access control
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