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Class Information
Number: 379/56.1
Name: Telephonic communications > Having light wave or ultrasonic link for speech or paging signal
Description: Subject matter wherein a telephone circuit connection is made by a transmitted electromagnetic wave group capable of propagating at the velocity of light (about 186,281 miles per second), or which has sonic vibrations above that of audible sound (16,000 Hz).

Sub-classes under this class:

Class Number Class Name Patents
379/56.2 Including fiber optic link within telephone network 48
379/56.3 Including infra-red link with landline telephone network 53

Patents under this class:

Patent Number Title Of Patent Date Issued
8284701 Response to CS paging request Oct. 9, 2012
8204737 Message recognition using shared language model Jun. 19, 2012
7864928 Infrared communication receiver Jan. 4, 2011
7653411 Electronic apparatus having infrared communication function Jan. 26, 2010
7421203 Method for transmitting packet in wireless access network based on wavelength identification code scheme Sep. 2, 2008
7409159 Wireless wavelength division multiplexed system Aug. 5, 2008
7010098 Ultrasonic proximity detector for a telephone device Mar. 7, 2006
7003321 Mobile communication system and switching apparatus Feb. 21, 2006
6889032 Mobile base station for disseminating information May. 3, 2005
6782199 Optical communications systems with optical subsystem communications links Aug. 24, 2004
6754483 Method and system for generating a secure wireless link between a handset and base station Jun. 22, 2004
6704568 Protection system for an electricity network having an infrared data transmission link using the WAP protocol Mar. 9, 2004
6507734 Method and system which uses sound wave based communication to generate a secure wireless link between a handset and base station Jan. 14, 2003
6363139 Omnidirectional ultrasonic communication system Mar. 26, 2002
6310705 Duplex outdoor base station transceiver subsystem utilizing a hybrid system of a high power amplifier and an optic antenna Oct. 30, 2001
6094146 Method of, and communication system for, sending messages Jul. 25, 2000
6014386 System and method for high speed communication of video, voice and error-free data over in-wall wiring Jan. 11, 2000
5977880 Data communication system and data communication terminal applied thereto Nov. 2, 1999
5966643 Hand-held radiotelephone having two-part construction Oct. 12, 1999
5946394 Isolation amplifier with hook switch control Aug. 31, 1999
5936547 System and method for providing user-selected information to a paging-capable device Aug. 10, 1999
5915207 Mobile and wireless information dissemination architecture and protocols Jun. 22, 1999
5870030 Advertiser pays information and messaging system and apparatus Feb. 9, 1999
H1772 System and method for transmitting information from a paging device to a receiver Jan. 5, 1999
5828311 Circuitry and method for accessing a radio pager Oct. 27, 1998
5815298 System and method for wirelessly communicating a sound signal Sep. 29, 1998
5790291 Beam steering and tracking of laser communication links by dual-quadrant tracker and photodiode assembly Aug. 4, 1998
5774856 User-Customized, low bit-rate speech vocoding method and communication unit for use therewith Jun. 30, 1998
5757277 Wireless selective call receiver and method and system for writing desired data in the same May. 26, 1998
5668852 Automatic caller-associated information provision system, improvement and method for paging system Sep. 16, 1997
5636264 Radio telephone system which utilizes an infrared signal communication link Jun. 3, 1997
5598287 Multiple access telecommunication network Jan. 28, 1997
5463671 Telecommunications network having a distributed network of decentralized local stations Oct. 31, 1995
5410587 Ultrasonic radiotelephone for an automobile Apr. 25, 1995
5315645 Communication apparatus utilizing digital optical signals May. 24, 1994
5251053 Radio communication system Oct. 5, 1993
5067173 Microcellular communications system using space diversity reception Nov. 19, 1991
4969180 Cordless pen telephone handset Nov. 6, 1990
4629828 Signal transmission apparatus for steering operation board Dec. 16, 1986
4558183 Opto-coupler interfacing circuit Dec. 10, 1985
4542262 Subscriber telephone station Sep. 17, 1985
4535441 Communication system for stationary and mobile subscribers Aug. 13, 1985
4421953 Telephone tactile alert system Dec. 20, 1983

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