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Class Information
Number: 379/93.08
Name: Telephonic communications > Telephone line or system combined with diverse electrical system or signalling (e.g., composite) > Having transmission of a digital message signal over a telephone line > Transmission scheme (e.g., compression/decompression, transmission rate)
Description: Subject matter including a particular detail of a methodology in which the message signal is conveyed.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 5883941 |
HDSL and POTS carrier system |
Mar. 16, 1999 |
| 5878119 |
Idle suppression and signal threshold determination therefor |
Mar. 2, 1999 |
| 5848134 |
Method and apparatus for real-time information processing in a multi-media system |
Dec. 8, 1998 |
| 5841841 |
Networking computers via shared use of voice telephone lines |
Nov. 24, 1998 |
| 5841840 |
Multiple line modem and method for providing voice on demand |
Nov. 24, 1998 |
| 5835571 |
Automated telephone service interface |
Nov. 10, 1998 |
| 5835574 |
Dual-tone multi-frequency signal transfer protocol |
Nov. 10, 1998 |
| 5832065 |
Synchronous voice/data message system |
Nov. 3, 1998 |
| 5822404 |
System and method for identifying remote communications formats |
Oct. 13, 1998 |
| 5818603 |
Method and system for controlling and communicating with machines using multiple communication formats |
Oct. 6, 1998 |
| 5818913 |
Method and Apparatus for multiplexing voice data over a single DTE/DCE link |
Oct. 6, 1998 |
| 5802471 |
Mobile communication system, automatic call receiving method, and mobile station |
Sep. 1, 1998 |
| 5801757 |
Interactive communication device |
Sep. 1, 1998 |
| 5781617 |
Communication server apparatus using frequency multiplexing and method |
Jul. 14, 1998 |
| 5774527 |
Integrated telephone and cable communication networks |
Jun. 30, 1998 |
| 5768350 |
Real-time and non-real-time data multplexing over telephone lines |
Jun. 16, 1998 |
| 5764279 |
Method and apparatus for instantaneous in-band document exchange during a video conference |
Jun. 9, 1998 |
| 5751339 |
Television conversation/monitoring system changing transmission capacity responsive to state change in remote location |
May. 12, 1998 |
| 5710761 |
Error control negotiation based on modulation |
Jan. 20, 1998 |
| 5657379 |
Data communication apparatus and method for performing noiseless data communication using a spread spectrum system |
Aug. 12, 1997 |
| 5657378 |
Digital screen phone terminal with graphical user interface |
Aug. 12, 1997 |
| 5625678 |
Method and system for allowing switched voice and data communication among multiple application programs |
Apr. 29, 1997 |
| 5619508 |
Dual port interface for a computer-based multifunction personal communication system |
Apr. 8, 1997 |
| 5617220 |
Facsimile apparatus |
Apr. 1, 1997 |
| 5617561 |
Message sequence number control in a virtual time system |
Apr. 1, 1997 |
| 5617423 |
Voice over data modem with selectable voice compression |
Apr. 1, 1997 |
| 5592538 |
Telecommunication device and method for interactive voice and data |
Jan. 7, 1997 |
| 5568489 |
Method and apparatus for processing data received at a remote workstation |
Oct. 22, 1996 |
| 5564001 |
Method and system for interactively transmitting multimedia information over a network which requires a reduced bandwidth |
Oct. 8, 1996 |
| 5553063 |
Voice over data communication system |
Sep. 3, 1996 |
| 5537441 |
Controlled simultaneous analog and digital communication |
Jul. 16, 1996 |
| 5533108 |
Method and system for routing phone calls based on voice and data transport capability |
Jul. 2, 1996 |
| 5524141 |
System and method for providing directory information over a telephony network using ADSI |
Jun. 4, 1996 |
| 5519731 |
ADSL compatible discrete multi-tone apparatus for mitigation of T1 noise |
May. 21, 1996 |
| 5517490 |
Telecommunication terminal operating at alternative data throughput rates |
May. 14, 1996 |
| 5513212 |
Conversion of a fax modulation to a data modulation |
Apr. 30, 1996 |
| 5502727 |
Image and audio communication system having graphical annotation capability |
Mar. 26, 1996 |
| 5495529 |
Digital sound level control apparatus |
Feb. 27, 1996 |
| 5493609 |
Telecommunication system for automatic switching between voice and data communications |
Feb. 20, 1996 |
| 5490209 |
Autobaud rate detection mechanism |
Feb. 6, 1996 |
| 5488610 |
Communication system |
Jan. 30, 1996 |
| 5479411 |
Multi-media integrated message arrangement |
Dec. 26, 1995 |
| 5473613 |
Digital added main line system |
Dec. 5, 1995 |
| 5473675 |
Call establishment for simultaneous analog and digital communications |
Dec. 5, 1995 |
| 5463616 |
Method and apparatus for establishing a full-duplex, concurrent, voice/non-voice connection between two sites |
Oct. 31, 1995 |
| 5459730 |
Digital added main line system |
Oct. 17, 1995 |
| RE35050 |
Personal computer-as an interface between a telephone station set and a business communication system |
Oct. 3, 1995 |
| 5452289 |
Computer-based multifunction personal communications system |
Sep. 19, 1995 |
| 5438614 |
Modem management techniques |
Aug. 1, 1995 |
| 5428608 |
Call connection technique |
Jun. 27, 1995 |
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