Patent US3636264A successfully refreshed from Google Patents.
US3636264A
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Dial pulse sending arrangement
Assignee: AT&T Inc
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Filing: 1969-04-03
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Granted: 1972-01-18
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Expires: 1989-04-03
Abstract
Abstract A dial pulse sender is described wherein a common generator supplies dial pulse timing signals to a group of dial pulse transmitters. Control apparatus connected to each transmitter gates a predetermined number of timing signals in accordance with stored calling signal information. The occurrence of gated timing pulses alters a stored calling signal code, and gating of timing pulses is inhibited after a predetermined code is obtained.
Inventors
- 👤 Thomas M Quinn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:33
CPC Classifications
H; H04; H04Q; H04Q3/00; H04Q3/42; H04Q3/54; H04Q3/545
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
160 words
In a telephone switching system having a call store, a plurality of trunks, a plurality of gating means connected to said trunks, and a source of timing pulses, a dial pulse signaling method comprising the steps of 1. generating repetitive pairs of timing pulses defining dial pulse intervals, 2. storing a signal code and a signaling control code corresponding to signals received from an associated station in a call store, 3. selecting one of a plurality of gating means in response to said signaling control code, 4. enabling said gating means in synchronism with said timing pulse pairs to pass said timing pulse pairs in response to one value of said signaling code, 5. producing a dial pulse in response to each gated pulse pair, 6. altering said signaling code upon the occurrence of each gated pulse pair, and 7. disabling said gating means in sYnchronism with said timing pulse pairs responsive to a second value of said signaling code.
Claim 2
Dependent Claim
160 words
In a telephone switching system having a call store, a plurality of trunks, a plurality of gating means connected to said trunks, and a source of timing pulses, a dial pulse signaling method comprising the steps of 1. generating repetitive pairs of timing pulses defining dial pulse intervals, 2. storing a signal code and a signaling control code corresponding to signals received from an associated station in a call store, 3. selecting one of a plurality of gating means in response to said signaling control code, 4. enabling said gating means in synchronism with said timing pulse pairs to pass said timing pulse pairs in response to one value of said signaling code, 5. producing a dial pulse in response to each gated pulse pair, 6. altering said signaling code upon the occurrence of each gated pulse pair, and 7. disabling said gating means in sYnchronism with said timing pulse pairs responsive to a second value of said signaling code.
Claim 3
Dependent Claim
21 words
storing a signal code and a signaling control code corresponding to signals received from an associated station in a call store,
Claim 4
Dependent Claim
21 words
storing a signal code and a signaling control code corresponding to signals received from an associated station in a call store,
Claim 5
Dependent Claim
91 words
The method set forth in claim 1 wherein the steps of generating the repetitive pairs of timing pulses and enabling and disabling of the gating means in synchronism comprise the steps of: generating a plurality of recurring clock pulses defining discrete time periods, generating the repetitive pulse pairs in response to a noncoincident pair of recurring clock pulses, and enabling and disabling said gating means in response to recurring clock pulses which coincide with neither of the noncoincident pair of clock pulses employed in the generation of the repetitive pulse pairs.
Claim 6
Dependent Claim
15 words
selecting one of a plurality of gating means in response to said signaling control code,
Claim 7
Dependent Claim
15 words
selecting one of a plurality of gating means in response to said signaling control code,
Claim 8
Dependent Claim
26 words
enabling said gating means in synchronism with said timing pulse pairs to pass said timing pulse pairs in response to one value of said signaling code,
Claim 9
Dependent Claim
26 words
enabling said gating means in synchronism with said timing pulse pairs to pass said timing pulse pairs in response to one value of said signaling code,
Claim 10
Dependent Claim
11 words
producing a dial pulse in response to each gated pulse pair,
Claim 11
Dependent Claim
11 words
producing a dial pulse in response to each gated pulse pair,
Claim 12
Dependent Claim
13 words
altering said signaling code upon the occurrence of each gated pulse pair, and
Claim 13
Dependent Claim
13 words
altering said signaling code upon the occurrence of each gated pulse pair, and
Claim 14
Dependent Claim
20 words
disabling said gating means in sYnchronism with said timing pulse pairs responsive to a second value of said signaling code.
Claim 15
Dependent Claim
20 words
disabling said gating means in sYnchronism with said timing pulse pairs responsive to a second value of said signaling code.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-17 | 1975-07-19 | 1976-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-17 | 1979-07-19 | 1980-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-17 | 1983-07-19 | 1984-01-18 | $7700.00 | Window Closed / Lapsed |