Touch tone decoder
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 22, 1986
Grant Date -
N/A
app pub date -
Feb 1, 1985
filing date -
Feb 1, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A programmable tone decoder for standard bell system DTMF tone pairs is presented which comprises an integrated DTMF receiver and a means for programming a sequence of digits which are compared to the output of the DTMF receiver. The decoding means provides an output for an exact comparison of the complete sequence, the output being indicative of the reception of a proper telephone code sequence.
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Family
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Cited Art Landscape
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