Keypad/dialler interface for telephone test set
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United States of America Patent
Stats
-
Sep 19, 1989
Grant Date -
N/A
app pub date -
Aug 3, 1988
filing date -
Aug 3, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The functionality of the keypad of a telephone test set is augmented by an interface circuit arrangement which enables keys of the keypad to be used to control both dialing signal generation and prescribed test functions, while effectively preventing interference between the operation of a dialing signal generator, to which the keypad is coupled during a first mode of operation, and that of test function signal generator circuitry, provided exclusive of the dialing signal generator, during a second mode of operation. Additionally, the test set includes a ringing signal coupling circuit for enabling the test set microphone, through which a telephone craftsperson voices audio speech signals to a speech signal processing circuit, to be used to audiblize the ringing signal, without impacting the normal voice input functionality of the microphone and associated speech signal processor.
First Claim
Family
- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
- FLUKE CORPORATION
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Faith, Richard W | Oxnard, CA | 9 | 107 |
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Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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