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Class Information
Number: 379/93.27
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) > Alphanumeric
Description: Subject matter including a structure particularly adapted for recognition of tone codes generated via dual-tone, multi-frequency signals into letters or numbers.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7574237 |
Method and apparatus for changing at least one communication parameter for a communication device |
Aug. 11, 2009 |
| 7450970 |
Apparatus and method for managing user data in a mobile terminal |
Nov. 11, 2008 |
| 7437413 |
Text messaging system and method |
Oct. 14, 2008 |
| 7274779 |
Telephone to telephone data passing system |
Sep. 25, 2007 |
| 7224292 |
Reduced keyboard letter selection system and method |
May. 29, 2007 |
| 7158618 |
Apparatus and method for recording URL together with voice message in a browser equipped telephone |
Jan. 2, 2007 |
| 7145991 |
Superposition of data over voice |
Dec. 5, 2006 |
| 7110520 |
Method and system for directory assistance services |
Sep. 19, 2006 |
| 7106837 |
Split browser |
Sep. 12, 2006 |
| 7088804 |
Systems and methods for information exchange and synchronization using DTMF over telephone communication channels |
Aug. 8, 2006 |
| 6996213 |
Superposition of data over voice |
Feb. 7, 2006 |
| 6909382 |
Polyphonic/chordic annotation method |
Jun. 21, 2005 |
| 6879669 |
Method and apparatus for enabling a privacy feature in a communications network |
Apr. 12, 2005 |
| 6847310 |
Keyboard |
Jan. 25, 2005 |
| 6847706 |
Method and apparatus for alphanumeric data entry using a keypad |
Jan. 25, 2005 |
| 6792146 |
Method and apparatus for entry of multi-stroke characters |
Sep. 14, 2004 |
| 6778648 |
Systems and methods for wireline ring tone service |
Aug. 17, 2004 |
| 6771751 |
Systems and methods for information exchange and synchronization using DTMF over telephone communication channels |
Aug. 3, 2004 |
| 6765556 |
Two-key input per character text entry apparatus and method |
Jul. 20, 2004 |
| 6751303 |
Data communication over telephone voice channel using DTMF interface |
Jun. 15, 2004 |
| 6728369 |
Method and device for distinguishing among a plurality of devices and data elements with a sequence of signals |
Apr. 27, 2004 |
| 6681002 |
Directionally-mapped, keyed alpha -numeric data input/output system |
Jan. 20, 2004 |
| 6594348 |
Voice browser and a method at a voice browser |
Jul. 15, 2003 |
| 6459777 |
Directionally-mapped, keyed alpha-numeric data input/output system |
Oct. 1, 2002 |
| 6346894 |
Method and system for intelligent text entry on a numeric keypad |
Feb. 12, 2002 |
| 6320942 |
Directionally-mapped, keyed alpha-numeric data input/output system |
Nov. 20, 2001 |
| 6282272 |
Telephone web browser arrangement and method |
Aug. 28, 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 |
| 6150962 |
Predictive data entry method for a keyboard |
Nov. 21, 2000 |
| 6137867 |
Alphanumeric message composing method using telephone keypad |
Oct. 24, 2000 |
| 6133940 |
Telephone web browser arrangement and method |
Oct. 17, 2000 |
| 6081584 |
Data transmitting/receiving apparatus and data communication system |
Jun. 27, 2000 |
| 6078660 |
Method and device for decoding a sequence of signals |
Jun. 20, 2000 |
| 6049697 |
Translator for messages transmitted to and received by a numeric pager |
Apr. 11, 2000 |
| 6009164 |
Telephone with a detachable key pad and method for operating it |
Dec. 28, 1999 |
| 6005495 |
Method and system for intelligent text entry on a numeric keypad |
Dec. 21, 1999 |
| 5999600 |
Facsimile mail system and method for controlling the same |
Dec. 7, 1999 |
| 5995557 |
Tone detection with aliasing bandpass filters |
Nov. 30, 1999 |
| 5949857 |
Telephone DTMF signal accessible data processor with calculator program |
Sep. 7, 1999 |
| 5903630 |
Method and apparatus for specifying alphanumeric information with a telephone keypad |
May. 11, 1999 |
| 5872837 |
System and method for transmitting data and commands using a telephone |
Feb. 16, 1999 |
| 5828991 |
Sentence reconstruction using word ambiguity resolution |
Oct. 27, 1998 |
| 5809112 |
Telecommunications relay system |
Sep. 15, 1998 |
| 5793846 |
Telephonic-interface game control system |
Aug. 11, 1998 |
| 5761280 |
Telephone web browser arrangement and method |
Jun. 2, 1998 |
| 5745882 |
Electronic classified advertising interface method and instructions with continuous search notification |
Apr. 28, 1998 |
| 5561710 |
Interactive voice communication terminal with alpha and numeric keypad |
Oct. 1, 1996 |
| 5548634 |
Alphanumeric registration method and device of a system with alphanumeric entry keys |
Aug. 20, 1996 |
| 5488650 |
Configurable telephone interface for electronic devices |
Jan. 30, 1996 |
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