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US3686440A
Expired / Lapsed
US
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Telephone calling-station identification
Assignee: Sola Basic Industries Inc
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Filing: 1971-03-26
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Granted: 1972-08-22
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Expires: 1991-03-26
Abstract
Abstract Station-identification apparatus for use in reception of telephone calls from stations at each of which there is repetitively superimposed on the call therefrom a respective series, peculiar to that station, of numeral-representing signals. The received signals are screened in various respects, and the numerals represented by a series thereof are sequentially stored. Output means are actuated to read out the stored signals under conditions which minimize the risk of erroneous read-out.
Inventors
- 👤 James K Kroeger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:14
CPC Classifications
H; H04; H04M; H04M11/00; H04M11/04; H04M1/00; H04M1/57; H04M1/573
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
178 words
Station-identification apparatus for use in the reception of telephone calls from stations at each of which a respective series, peculiar to that station, of a uniform number n of numeral-representing predeterminedly spaced signals extending over a predetermined period of time is repetitively superimposed on the call at an interval of recurrence long relative to said period, comprising A. means for receiving and screening such numeral-representing signals; B. a group of n storing means, connected with said receiving and screening means, for sequentially storing the numerals respectively represented by successive received and screened signals; C. output means; D. means, interposed between said storing means and said output means, actuable to cause said output means to read out the numerals then standing stored in said storing means; and E. means, connected with said receiving and screening means, for delivering an actuation command when a received and screened signal has been followed by (n-1) received and screened signals within a time span much shorter than said interval of recurrence, said actuable means being connected with said command-delivering means for actuation thereby.
Claim 2
Dependent Claim
178 words
Station-identification apparatus for use in the reception of telephone calls from stations at each of which a respective series, peculiar to that station, of a uniform number n of numeral-representing predeterminedly spaced signals extending over a predetermined period of time is repetitively superimposed on the call at an interval of recurrence long relative to said period, comprising A. means for receiving and screening such numeral-representing signals; B. a group of n storing means, connected with said receiving and screening means, for sequentially storing the numerals respectively represented by successive received and screened signals; C. output means; D. means, interposed between said storing means and said output means, actuable to cause said output means to read out the numerals then standing stored in said storing means; and E. means, connected with said receiving and screening means, for delivering an actuation command when a received and screened signal has been followed by (n-1) received and screened signals within a time span much shorter than said interval of recurrence, said actuable means being connected with said command-delivering means for actuation thereby.
Claim 3
Dependent Claim
55 words
The subject matter claimed in claim 1 wherein said element identified as (E) comprises means, connected with said receiving and screening means, for delivering an actuation command when a received and screened signal has been followed by (n-1) received and screened signals within a time span of the order of magnitude of said predetermined period.
Claim 4
Dependent Claim
41 words
The subject matter claimed in claim 1 wherein said receiving and screening means includes means for withholding from storage any signal which has not persisted for at least a predetermined duration without interruption for more than a much shorter predetermined interval.
Claim 5
Dependent Claim
40 words
The subject matter claimed in claim 1 wherein said receiving and screening means includes means for withholding from storage any non-initial signal not preceded by a non-signal interval at least equal to a substantial fraction of the predetermined inter-signal spacing.
Claim 6
Dependent Claim
53 words
The subject matter claimed in claim 1 wherein said element identified as (D) includes a group of n storing means respectively connected with the n storing means of said first-recited group and effective, when said element is actuated, to store the numerals then standing stored in the storing means of said first-recited group.
Claim 7
Dependent Claim
52 words
The subject matter claimed in claim 5 further including means, effective after the first actuation of said element identified as (D) following a period of quiescence, for inhibiting the further actuation of said element so long as the numerals respectively stored in the n storing means of said first-recited group remain constant.
Claim 8
Dependent Claim
48 words
The subject matter claimed in claim 1 further including means, connected with said output means and said command-delivering means, for disabling said output means upon the passage of a predetermined time, long relative to said interval of recurrence, without the delivery of a command by said command-delivering means.
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) | 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 |