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Class Information
Number: 379/93.26
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 > By voice frequency signal (e.g., tone code)
Description: Subject matter wherein the pulse or data signal is specifically described as converted into one or more tones lying within the audible frequency spectrum.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7567548 |
Method to reduce the distortion in a voice transmission over data networks |
Jul. 28, 2009 |
| 7561873 |
Mobile handset as TTY device |
Jul. 14, 2009 |
| 7529363 |
Tone detector and method therefor |
May. 5, 2009 |
| 7486665 |
Transport of DTMF tones over VOATM/VOIP networks |
Feb. 3, 2009 |
| 7454005 |
Method and system for creating automated voice response menus for telecommunications services |
Nov. 18, 2008 |
| 7289491 |
Internet telephony arrangement and method |
Oct. 30, 2007 |
| 7280643 |
Audio status communication from an embedded device |
Oct. 9, 2007 |
| 7274779 |
Telephone to telephone data passing system |
Sep. 25, 2007 |
| 7245708 |
Acoustic coupling product label |
Jul. 17, 2007 |
| 7092379 |
Internet telephony arrangement and method |
Aug. 15, 2006 |
| 7088804 |
Systems and methods for information exchange and synchronization using DTMF over telephone communication channels |
Aug. 8, 2006 |
| 7076460 |
Interactive remote auction bidding system |
Jul. 11, 2006 |
| 7069243 |
Interactive remote auction bidding system |
Jun. 27, 2006 |
| 7054421 |
Enabling legacy interactive voice response units to accept multiple forms of input |
May. 30, 2006 |
| 7013393 |
Universal intelligent card for secure access to system functions |
Mar. 14, 2006 |
| RE38741 |
Audio communication system |
Jun. 7, 2005 |
| 6891944 |
System and method of autodialing for long-distance access |
May. 10, 2005 |
| 6771751 |
Systems and methods for information exchange and synchronization using DTMF over telephone communication channels |
Aug. 3, 2004 |
| 6751303 |
Data communication over telephone voice channel using DTMF interface |
Jun. 15, 2004 |
| 6741682 |
Method, computer system and program for processing bets and games of chance |
May. 25, 2004 |
| 6697466 |
Audio status communication from an embedded device |
Feb. 24, 2004 |
| 6683944 |
Voice transmitter |
Jan. 27, 2004 |
| 6668043 |
Systems and methods for transmitting and receiving text data via a communication device |
Dec. 23, 2003 |
| 6665383 |
Remote control module for computer and method thereof |
Dec. 16, 2003 |
| 6643358 |
Telephone answering apparatus and method for confirming an acoustic command signal |
Nov. 4, 2003 |
| 6560320 |
Adaptable subscriber unit for interactive telephone applications |
May. 6, 2003 |
| 6430284 |
System and method for redirecting control of in-band signaling |
Aug. 6, 2002 |
| 6415269 |
Interactive remote auction bidding system |
Jul. 2, 2002 |
| 6411688 |
Method for transferring dial tone in real time in computer communication system |
Jun. 25, 2002 |
| 6396921 |
Method and system for encoding and decoding typographic characters |
May. 28, 2002 |
| RE37569 |
High-speed modem synchronized to a remote codec |
Mar. 5, 2002 |
| 6259788 |
Technique for balancing loads in a communication network |
Jul. 10, 2001 |
| 6259691 |
System and method for efficiently transporting dual-tone multi-frequency/multiple frequency (DTMF/MF) tones in a telephone connection on a network-based telephone system |
Jul. 10, 2001 |
| 6243442 |
Telephone exchange apparatus |
Jun. 5, 2001 |
| 6236724 |
Methods and apparatus for encoding and decoding data transmitted over telephone lines |
May. 22, 2001 |
| 6233323 |
DTMF download technique for digital telephone devices |
May. 15, 2001 |
| 6215515 |
Videocommunicating device with an on-screen telephone keypad user-interface method and arrangement |
Apr. 10, 2001 |
| 6160873 |
System and method for remotely initializing, operating and monitoring a general-purpose computer |
Dec. 12, 2000 |
| 6104789 |
Method and system for transmitting text messages from a caller to a subscriber at an unknown address |
Aug. 15, 2000 |
| 6091805 |
Computerized voice response system |
Jul. 18, 2000 |
| 6052443 |
Alphanumeric message composing method using telephone keypad |
Apr. 18, 2000 |
| 6011836 |
In-line control of telephony device |
Jan. 4, 2000 |
| 5999597 |
Method and apparatus for minimizing system oscillations caused by acoustical coupling |
Dec. 7, 1999 |
| 5995557 |
Tone detection with aliasing bandpass filters |
Nov. 30, 1999 |
| 5974121 |
Alphanumeric message composing method using telephone keypad |
Oct. 26, 1999 |
| 5960067 |
Apparatus and method for parallel transmission of data over a telephone line |
Sep. 28, 1999 |
| 5949874 |
Method and system for compensating for signal deviations in tone signals over a transmission channel |
Sep. 7, 1999 |
| 5910980 |
Calling subscriber information notification |
Jun. 8, 1999 |
| 5905780 |
Electronic mail system |
May. 18, 1999 |
| 5903302 |
Automated video call distribution |
May. 11, 1999 |
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