Telephone keypad matrix
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 16, 1994
Issued Date -
N/A
app pub date -
May 26, 1992
filing date -
Mar 28, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method and apparatus for the conversion of a standard push button telephone keypad into a data entry terminal permitting full alphanumeric DTMF entry through a telephone system to a file server for delivery to a service provider computer. The alphabetical letters are prearranged to enable single or adjacent keypairs to be defined for each alphabetical letter. DTMF signals are generated by the keypairs and are transmitted to conventional voice tone recognition apparatus and storage facilities of the central computer for later or simultaneous delivery to a service provider computer such as a facsimile machine, an E-mail system, a paging system, and/or any data base connected to a telephone line.
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Family
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Cited Art Landscape
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