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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:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 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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