US4446339A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary dial decoder
Assignee: InterDigital Technology Corp
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Filing: 1982-04-26
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Granted: 1984-05-01
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Expires: 2002-04-26
Abstract
Abstract A telephone system for actuating a function-generating device such as ringing a telephone bell, lighting a lamp, reading a meter, and the like, the system being adapted to be directly operated by a pulse-generating means such as a rotary telephone dial.
Inventors
- 👤 Duane R. Bolgiano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:54
CPC Classifications
H; H04; H04M; H04M19/00; H04M19/02; H04M19/04; H04M11/00; H04M11/007; H04M3/00; H04M3/42
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
91 words
In a rotary dial actuated telephone system, means for detecting frequency transients produced by the rotation of a telephone dial, means for determining a fixed time period for passage of said transients from the dial to a telephone receiver network, means for counting the quantity of said transients passing to said receiver network within said fixed time period, means for translating the quantity of transients passed to said receiver network within said time period into an actuating signal, and generating means to utilize said actuating signal to generate a desired function.
Claim 2
Dependent Claim
91 words
In a rotary dial actuated telephone system, means for detecting frequency transients produced by the rotation of a telephone dial, means for determining a fixed time period for passage of said transients from the dial to a telephone receiver network, means for counting the quantity of said transients passing to said receiver network within said fixed time period, means for translating the quantity of transients passed to said receiver network within said time period into an actuating signal, and generating means to utilize said actuating signal to generate a desired function.
Claim 3
Dependent Claim
81 words
The system of claim 1 wherein said system includes a pair of counters, one of said counters being adapted to count and store an initial quantity of transients generated by an initial full rotation of the dial, said quantity of transients representing the speed of the dial and comprising said fixed time period, and the other of said counters being adapted to count and store subsequent quantities of transients generated by subsequent rotations of the dial during said fixed time period.
Claim 4
Dependent Claim
72 words
The system of claim 2 wherein said one of said counters is operated by a first clock at a first speed and said other of said counters is operated by a second clock at a second speed, and means to compare the output of said counters and to produce pulses based on the speed of the first clock divided by the speed of said second clock, said pulses comprising said actuating signal.
Claim 5
Dependent Claim
14 words
The system of claim 1 wherein said transients are in the audible frequency range.
Claim 6
Dependent Claim
17 words
The system of claim 1 wherein means are provided for modulating said transients at a predetermined rate.
Claim 7
Dependent Claim
26 words
The system of claim 1 wherein there is provided a memory means for storing the quantity of transients prior to passage thereof to said generating means.
References Cited (Backward Citations)
US4006316A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-05-01 | 1987-10-31 | 1988-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-01 | 1991-10-31 | 1992-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-01 | 1995-10-31 | 1996-05-01 | $7700.00 | Window Closed / Lapsed |