US3686657A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for distributing high-safety time bases
Assignee: LANNIONNAIS ELECTRONIQUE
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Filing: 1971-02-26
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Granted: 1972-08-22
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Expires: 1991-02-26
Abstract
Abstract The invention pertains to the field of high-reliability time bases which are indispensable in certain installations for the processing of information for which no breakdown or malfunction can be tolerated and which comprise for this reason a combination of several generators of clock signals and a circuit producing a majority decision concerning the several signals generated to provide a corrected signal which can be compared to the output of each generator.
Inventors
- 👤 Roger Renoulin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:07
CPC Classifications
G; G06; G06F; G06F11/00; G06F11/07; G06F11/16; G06F11/1604; G06F11/18; G06F11/183; H; H03; H03K; H03K19/00; H03K19/003; H03K19/00392; H03K3/00; H04; H04L; H04L7/00; H04L7/0079; H04L7/0083
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
141 words
A device for generating signals with high reliability comprising a plurality of identical signal generators, each generating identical signals in synchronism, amplifier means connected to the output of each signal generator for producing a direct signal and inverted signal from the output of each signal generator, majority decision receiver means having a first input receiving the sum of said direct signals and a second input receiving the sum of said inverted signals for generating a first direct signal and a second inverted signal corresponding to a majority decision of the outputs of said plurality of signal generators, and an individual control circuit connected to each of said amplifier means and to said majority decision receiver means for logically comparing said first and second signals from said majority decision receiver means with said direct and inverted signals from the respective amplifier means.
Claim 2
Independent Claim
141 words
A device for generating signals with high reliability comprising a plurality of identical signal generators, each generating identical signals in synchronism, amplifier means connected to the output of each signal generator for producing a direct signal and inverted signal from the output of each signal generator, majority decision receiver means having a first input receiving the sum of said direct signals and a second input receiving the sum of said inverted signals for generating a first direct signal and a second inverted signal corresponding to a majority decision of the outputs of said plurality of signal generators, and an individual control circuit connected to each of said amplifier means and to said majority decision receiver means for logically comparing said first and second signals from said majority decision receiver means with said direct and inverted signals from the respective amplifier means.
Claim 3
Dependent Claim
107 words
A device for generating signals as defined in claim 1, wherein said majority decision receiver means includes a differential amplifier having first and second inputs, said first input being connected through a first capacitor to a summing point for the direct signal outputs of all of said amplifier means and said second input being connected through a second capacitor to a summing point for the inverted signal outputs of all of said amplifier means, a first resistance connected between one of said inputs of said differential amplifier and ground, and a second resistance connected between the other input of said differential amplifier and a source of voltage.
Claim 4
Dependent Claim
49 words
A device for generating signals as defined in claim 1, wherein said control means includes alarm signal generating means responsive to detection of lack of correspondence between said first and second signals from said majority decision receiver and said direct and inverted signals from the respective amplifier means, respectively.
Claim 5
Dependent Claim
35 words
A device for generating signals as defined in claim 1, wherein said majority decision receiver means includes means responsive only to a minimum signal level equal to the output level of a single signal generator.
Claim 6
Dependent Claim
49 words
A device for generating signals as defined in claim 4, wherein said control means includes alarm signal generating means responsive to detection of lack of correspondence between said first and second signals from said majority decision receiver and said direct and inverted signals from the respective amplifier means, respectively.
Claim 7
Dependent Claim
107 words
A device for generating signals as defined in claim 5, wherein said majority decision receiver means includes a differential amplifier having first and second inputs, said first input being connected through a first capacitor to a summing point for the direct signal outputs of all of said amplifier means and said second input being connected through a second capacitor to a summing point for the inverted signal outputs of all of said amplifier means, a first resistance connected between one of said inputs of said differential amplifier and ground, and a second resistance connected between the other input of said differential amplifier and a source of voltage.
Claim 8
Independent Claim
125 words
A device for generating signals with high reliability comprising a plurality of signal generators each generating in synchronism identical signals having a first reference level and a second level, summing means for summing the outputs of said plurality of signal generators, majority decision receiver means connected to said summing means and responsive only to a minimum signal level equal to said second level for generating an output signal equal to the majOrity decision of the summed outputs of said plurality of signal generators, and individual control means connected to a respective signal generator and the output of said majority decision receiver means for generating an alarm signal when said majority decision output signal does not correspond to the signal generated by a respective signal generator.
Claim 9
Independent Claim
125 words
A device for generating signals with high reliability comprising a plurality of signal generators each generating in synchronism identical signals having a first reference level and a second level, summing means for summing the outputs of said plurality of signal generators, majority decision receiver means connected to said summing means and responsive only to a minimum signal level equal to said second level for generating an output signal equal to the majOrity decision of the summed outputs of said plurality of signal generators, and individual control means connected to a respective signal generator and the output of said majority decision receiver means for generating an alarm signal when said majority decision output signal does not correspond to the signal generated by a respective signal generator.
Claim 10
Dependent Claim
40 words
A device for generating signals as defined in claim 7, wherein each of said individual control means includes comparison means for comparing the output of the generator to which said control means is connected to said majority decision output signal.
Claim 11
Dependent Claim
107 words
A device for generating signals as defined in claim 8, wherein said majority decision receiver means includes a differential amplifier having first and second inputs, said first input being connected through a first capacitor to a summing point for the direct signal outputs of all of said amplifier means and said second input being connected through a second capacitor to a summing point for the inverted signal outputs of all of said amplifier means, a first resistance connected between one of said outputs of said differential amplifier and ground, and a second resistance connected between the other input of said differential amplifier and a source of voltage.
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) | 1975-08-22 | 1976-02-21 | 1976-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-22 | 1980-02-21 | 1980-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-22 | 1984-02-21 | 1984-08-22 | $7700.00 | Window Closed / Lapsed |