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Browse by Category: Main > Communications
Class Information
Number: 455/72
Name: Telecommunications > Transmitter and receiver at separate stations > With control signal > Receiver control signal originates at message transmitter > For compression and expansion of message signal (i.e., companding)
Description: Subject matter wherein the range of variation of the modulating parameter is decreased at the transmitter and expanded in the complementary manner in the receiver.










Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
8682244 Underwater communication system Mar. 25, 2014
8665933 Data transmitting and receiving method and device for communication and system thereof Mar. 4, 2014
8599878 Wireless communication apparatus, header compression method thereof, and header decompression method thereof Dec. 3, 2013
8577287 Transmission diversity scheme of multiple cell cooperative communications Nov. 5, 2013
8577288 Subsea transfer system providing wireless data transfer, electrical power transfer and navigation Nov. 5, 2013
8539022 Facilitating server response optimization Sep. 17, 2013
8521098 Receiving apparatus, transmitting apparatus, receiving method, transmitting method, communications system, and communication method Aug. 27, 2013
8515344 Diver communication system Aug. 20, 2013
8515343 Water based vehicle communications system Aug. 20, 2013
8503355 Method, server, and system for managing "push-to-talk" session Aug. 6, 2013
8494182 Feedback limiter with adaptive time control Jul. 23, 2013
8457601 Key responsive record, navigation and marking controls for communications system Jun. 4, 2013
8452239 Radio communication device, program and radio communication method May. 28, 2013
8412105 Electronic devices with radio-frequency collision resolution capabilities Apr. 2, 2013
8406212 Service flow with robust header compression (ROHC) in a WiMAX wireless network Mar. 26, 2013
8385821 Underwater vehicle communications system Feb. 26, 2013
8364078 Communications system Jan. 29, 2013
8358973 Communications system Jan. 22, 2013
8346164 Underwater communication system Jan. 1, 2013
8346165 Diver audio communication system Jan. 1, 2013
8335469 Communications system Dec. 18, 2012
8331912 Updateable messaging Dec. 11, 2012
8326219 Communications system Dec. 4, 2012
8311481 Data format conversion for electronic devices Nov. 13, 2012
8300664 Enhanced allocation and signaling of radio frames containing multimedia broadcast single frequency network subframes Oct. 30, 2012
8249522 Apparatus and method for transmitting/receiving control message in wireless communication system Aug. 21, 2012
8249883 Channel extension coding for multi-channel source Aug. 21, 2012
8223881 Transmitter and receiver for a wireless audio transmission system Jul. 17, 2012
8180301 System and method for encoding and decoding information signals using a priori information May. 15, 2012
8165165 Apparatus for dynamic header compression and method thereof Apr. 24, 2012
8160106 Method, device and system for transmitting Ethernet packets Apr. 17, 2012
8145198 Method of initializing an electronic radio communication module, method of compressing and decompressing calibration parameters, corresponding computer programme product and storage means Mar. 27, 2012
8135039 Method and apparatus for allocating radio resource in communication system Mar. 13, 2012
8131213 Sea vessel tagging apparatus and system Mar. 6, 2012
8131216 Data format conversion for electronic devices Mar. 6, 2012
8116483 Speaker device with the phase changing device for varying the phase of the audio signal Feb. 14, 2012
8107977 Cross-platform messaging Jan. 31, 2012
8045919 Electromagnetic/acoustic underwater communications system Oct. 25, 2011
8046214 Low complexity decoder for complex transform coding of multi-channel sound Oct. 25, 2011
8027328 Header compression in a wireless communication network Sep. 27, 2011
8005424 Communication device and communication method of underwater vehicle Aug. 23, 2011
8001175 Facilitating server response optimization Aug. 16, 2011
7961896 Expander circuit with reduced distortion Jun. 14, 2011
7917094 Method and apparatus for overhead reduction of signaling messages Mar. 29, 2011
7899025 Header suppression in a wireless communication network Mar. 1, 2011
7877059 Underwater communications system comprising relay transceiver Jan. 25, 2011
7873316 Underwater communications system Jan. 18, 2011
7865148 System and method for encoding and decoding information signals using a priori information Jan. 4, 2011
7865139 Method and system for relaying signals from a magneto-inductive system through a voice-band system Jan. 4, 2011
7853206 Underwater communications system with adaptable carrier frequency Dec. 14, 2010

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