US3928803A
Expired / Lapsed
US
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Distribution function analyzer for measuring telephone equipment holding times
Assignee: Individual
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Filing: 1974-11-04
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Granted: 1975-12-23
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Expires: 1994-11-04
Abstract
Abstract Analyzer unit for measuring the durations of signals and for classifying in a distribution function the duration measurement values in function of their deviations in relation to a nominal duration value. This analyzer unit includes means for sampling signals all having the same nominal duration value Tau with a preset recurrence period and means for storing a predetermined number of duration measurement values. A duration increment Delta Tau is selected and entered into the unit. This increment and multiples thereof are added and subtracted from the nominal duration value. The stored duration values are applied to a plurality of comparators each having a lower and an upper digital limits and defining adjacent time slots, the upper and lower limits of a given time slot being respectively equal to ( Tau n Delta Tau ) and ( Tau - (n-1) Delta Tau ) where n is an integer. A plurality of counters are respectively associated with the comparators and receive therefrom counting pulses when the durations of the applied duration values respectively fall within the time slots of the comparators.
Inventors
- 👤 Jean H Hugon
- 👤 Jean Brosseron
- 👤 Pierre J Ligneres
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:53
CPC Classifications
G; G04; G04F; G04F10/00; H; H04; H04M; H04M3/00; H04M3/22; H04M3/36
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
195 words
An analyzer unit to measure signal duration values and to classify them in function of their deviations in relation to a nominal duration value, said analyzer unit including means for sampling signals all having the same nominal duration value Tau with a preset recurrence period, means for measuring and storing the successive duration values of the signals, means for counting the signal duration measurements carried out by said unit up to a predetermined number, means for defining a duration increment Delta Tau , means for adding to and substracting from said nominal duration value said duration increment and the multiples thereof, a plurality of comparators each having a lower and an upper digital limits and defining adjacent time slots, the upper and lower limits of a given time slot being respectively equal to ( Tau - n Delta Tau ) and ( Tau - (n-1) Delta Tau ) where n is an integer, means for applying the stored duration values to said comparators and a plurality of counters respectively associated with said comparators and receiving therefrom counting pulses when the durations of the applied duration values respectively fall within the time slots of said comparators.
Claim 2
Dependent Claim
195 words
An analyzer unit to measure signal duration values and to classify them in function of their deviations in relation to a nominal duration value, said analyzer unit including means for sampling signals all having the same nominal duration value Tau with a preset recurrence period, means for measuring and storing the successive duration values of the signals, means for counting the signal duration measurements carried out by said unit up to a predetermined number, means for defining a duration increment Delta Tau , means for adding to and substracting from said nominal duration value said duration increment and the multiples thereof, a plurality of comparators each having a lower and an upper digital limits and defining adjacent time slots, the upper and lower limits of a given time slot being respectively equal to ( Tau - n Delta Tau ) and ( Tau - (n-1) Delta Tau ) where n is an integer, means for applying the stored duration values to said comparators and a plurality of counters respectively associated with said comparators and receiving therefrom counting pulses when the durations of the applied duration values respectively fall within the time slots of said comparators.
Claim 3
Dependent Claim
242 words
An analyzer unit to measure signal duration values and to classify them in function of their deviations in relation to a nominal duration value, said analyzer unit including means for sampling signals all having the same nominal duration value Tau with a preset recurrence period, means for measuring and storing the successive duration values of the signals, means for counting the signal duration measurements carried out by said unit up to a predetermined number, means for defining a duration increment Delta Tau , means for adding to and substracting from said nominal duration value said duration increment and the multiples thereof, a plurality of first comparators each having a lower and an upper digital limits, and defining adjacent time slots, the upper and lower limits of a given time slot being respectively equal to ( Tau - n Delta Tau ) and ( Tau - (n-1) Delta Tau ) where n is an integer, means for applying the the stored duration values to said comparators, a plurality of counters respectively associated with said comparators and receiving therefrom counting pulses when the durations of the applied duration values respectively fall within the time slots of said comparators, a second comparator for comparing the contents in said counters and selecting the two counters having the greater contents and means for substituting for said nominal duration value the common limit of the two time slots defined by the comparators associated with the two selected counters.
Claim 4
Dependent Claim
242 words
An analyzer unit to measure signal duration values and to classify them in function of their deviations in relation to a nominal duration value, said analyzer unit including means for sampling signals all having the same nominal duration value Tau with a preset recurrence period, means for measuring and storing the successive duration values of the signals, means for counting the signal duration measurements carried out by said unit up to a predetermined number, means for defining a duration increment Delta Tau , means for adding to and substracting from said nominal duration value said duration increment and the multiples thereof, a plurality of first comparators each having a lower and an upper digital limits, and defining adjacent time slots, the upper and lower limits of a given time slot being respectively equal to ( Tau - n Delta Tau ) and ( Tau - (n-1) Delta Tau ) where n is an integer, means for applying the the stored duration values to said comparators, a plurality of counters respectively associated with said comparators and receiving therefrom counting pulses when the durations of the applied duration values respectively fall within the time slots of said comparators, a second comparator for comparing the contents in said counters and selecting the two counters having the greater contents and means for substituting for said nominal duration value the common limit of the two time slots defined by the comparators associated with the two selected counters.
Claim 5
Dependent Claim
156 words
An analyzer unit to measure signal duration values and to classify them in function of their deviations in relation to a nominal duration value according to claim 1, in which the means for measuring and storing the successive duration values of the signals comprises clock means generating clock pulses with a preset recurrence period, store means activated by the signals during the whole duration thereof, means for counting the clock pulses, a signal start time register, means for transferring the count of said counting means into said signal start time register when the same is empty and simultaneously the store means is activated, a signal stop time register, means for transferring the count of said counting means into signal stop time register when the same is not empty and simultaneously the store means is inactivated and means for subtracting the contents of said signal start time register from the contents of said signal stop time register.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-22 | 1979-06-23 | 1979-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-22 | 1983-06-23 | 1983-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-22 | 1987-06-23 | 1987-12-23 | $7700.00 | Window Closed / Lapsed |