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US3768026A
Expired / Lapsed
US
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Retriggerable one-shot multivibrator
Assignee: AT&T Inc
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Filing: 1972-03-09
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Granted: 1973-10-23
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Expires: 1992-03-09
Abstract
Abstract A retriggerable one-shot multivibrator is realized by employing a plurality of inverting logic gates, a digital divider and a clock circuit. A first logic gate is used to control the supply of clock pulses to the divider. A second logic gate responds to the divider output to yield the desired multivibrator output and to control the first logic gate. The one-shot multivibrator is triggered by clearing the divider.
Inventors
- 👤 D Pezzutti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:39
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/027; H03K3/033
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
79 words
A retriggerable one-shot multivibrator which comprises, first means for generating a control signal having a normal interval directly related to a number of reference pulse signals supplied to said first means, said first means being responsive to each one of supplied trigger signals for generating a corresponding control signal, and second means responsive to said control signal for selectively supplying said reference pulse signals to said first means, wherein said control signal is the desired one-shot multivibrator output signal.
Claim 2
Dependent Claim
79 words
A retriggerable one-shot multivibrator which comprises, first means for generating a control signal having a normal interval directly related to a number of reference pulse signals supplied to said first means, said first means being responsive to each one of supplied trigger signals for generating a corresponding control signal, and second means responsive to said control signal for selectively supplying said reference pulse signals to said first means, wherein said control signal is the desired one-shot multivibrator output signal.
Claim 3
Dependent Claim
32 words
The invention as defined in claim 1 wherein said seCond means includes first logic network means responsive to said control signal for selectively supplying said reference pulse signals to said first means.
Claim 4
Dependent Claim
67 words
The invention as defined in claim 2 wherein said first means includes divider means having first and second inputs and an output, said reference pulses being supplied to said first input, said control signal being developed at said output and said trigger signals being supplied to said second input, said divider means being set to a predetermined output state in response to each of said trigger signals.
Claim 5
Dependent Claim
103 words
The invention as defined in claim 2 wherein said first means includes digital divider means having first and second inputs and at least one output, said reference pulse signals being supplied to said first input for generating predetermined signals at said at least one output, said trigger signals being supplied to said second input for setting said divider means to a predetermined output state in response to each of said trigger signals, and second logic network means in circuit relationship with said at least one output for generating said control signal in response to said predetermined signals developed at said divider means output.
Claim 6
Dependent Claim
20 words
The invention as defined in claim 4 wherein said first and second logic network means each includes a coincidence gate.
Claim 7
Dependent Claim
135 words
A digital retriggerable one-shot multivibrator which comprises, digital divider means for generating predetermined output signals in response to reference pulse signals, said divider means being set to a predetermined output state in response to each one of supplied trigger signals, first means selectively responsive to said divider means output signals for generating a control signal having an interval directly related to the number of reference pulses supplied to said divider means, a corresponding control signal being generated in response to each one of said trigger signals, and second means responsive to said control signal for selectively supplying said reference pulse signals to said divider means, said second means being enabled only during intervals in which said divider means is in said predetermined output state, wherein said control signal represents the desired one-shot multivibrator output signal.
Claim 8
Dependent Claim
135 words
A digital retriggerable one-shot multivibrator which comprises, digital divider means for generating predetermined output signals in response to reference pulse signals, said divider means being set to a predetermined output state in response to each one of supplied trigger signals, first means selectively responsive to said divider means output signals for generating a control signal having an interval directly related to the number of reference pulses supplied to said divider means, a corresponding control signal being generated in response to each one of said trigger signals, and second means responsive to said control signal for selectively supplying said reference pulse signals to said divider means, said second means being enabled only during intervals in which said divider means is in said predetermined output state, wherein said control signal represents the desired one-shot multivibrator output signal.
Claim 9
Dependent Claim
46 words
The invention as defined in claim 6 wherein said second means includes first logic network means responsive to said control signal and said reference pulse signals for selectively supplying pulse signals representative of said reference pulse signals to said divider means during said control signal interval.
Claim 10
Dependent Claim
33 words
The invention as defined in claim 7 wherein said first means includes second logic network means for generating said control signal in accordance with a selected code of said divider means output signals.
Claim 11
Dependent Claim
21 words
The invention as defined in claim 8 wherein said first and second logic network means each includes a coincidence logic gate.
Claim 12
Dependent Claim
44 words
The invention as defined in claim 9 wherein said digital divider means generates output signals in a predetermined code directly related to the number of supplied reference pulse signals and wherein said first and second logic network means each includes a NAND logic gate.
References Cited (Backward Citations)
US3614632A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-22 | 1977-04-23 | 1977-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-22 | 1981-04-23 | 1981-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-22 | 1985-04-23 | 1985-10-23 | $7700.00 | Window Closed / Lapsed |