US3562436A
Expired / Lapsed
US
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Method for supervision to determine the states of communication lines
Assignee: Siemens AG
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Filing: 1967-10-13
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Granted: 1971-02-09
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Expires: 1987-10-13
Abstract
Abstract A supervisory control method and circuit therefor wherein supervisory and evaluation circuits are employed to determine the states of a plurality of signal lines. Inquiry elements are operatively associated with the signal lines and are selectively connected in cyclic manner to the supervisory and evaluation circuits to provide a scanning method for successive evaluation of the signal lines. A reset pulse series is employed wherein every second inquiry pulse is preceded by a first reset pulse, and succeeded by a second reset pulse. The supervisory and evaluation apparatus provides for the evaluation of each signal line using inquiry results obtained at four different times over two reset pulse series.
Inventors
- 👤 Rudolf O H Lutgenau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:57
CPC Classifications
H; H04; H04M; H04M15/00; H04M15/10; H04M15/12; H04M15/18
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
225 words
A method of supervising a plurality of signal lines having assigned bistable magnetic cores to evaluate time spaced signal pulses applied thereto comprising: sampling the plurality of signal lines periodically in time multiplex manner at a predetermined sampling frequency having a corresponding time period between successive samplings equal to tFab; storing sampled signal pulses by driving the assigned magnetic cores to a magnetically stable condition in response thereto; resetting the assigned magnetic cores to their original magnetic condition by applying a reset pulse series thereto having first and second reset pulses of the same polarity at a predetermined frequency having a corresponding time period between successive reset pulse series equal to tFR; deriving inquiry result control signals in response to resetting of the assigned magnetic cores to their original magnetic conditions; synchronizing sampling of the signal lines and applying reset pulse series to the magnetic cores so that every second sampling is preceded by the first reset pulse and succeeded by the second reset pulse of a reset pulse series; evaluating simultaneously the iNquiry result control signals derived in response to the first and second reset pulses of n reset pulse series to determine when signal pulses are applied to the signal lines: and causing registration of evaluated signal pulses to provide an indication of the number of signal pulses applied to each signal line.
Claim 2
Independent Claim
225 words
A method of supervising a plurality of signal lines having assigned bistable magnetic cores to evaluate time spaced signal pulses applied thereto comprising: sampling the plurality of signal lines periodically in time multiplex manner at a predetermined sampling frequency having a corresponding time period between successive samplings equal to tFab; storing sampled signal pulses by driving the assigned magnetic cores to a magnetically stable condition in response thereto; resetting the assigned magnetic cores to their original magnetic condition by applying a reset pulse series thereto having first and second reset pulses of the same polarity at a predetermined frequency having a corresponding time period between successive reset pulse series equal to tFR; deriving inquiry result control signals in response to resetting of the assigned magnetic cores to their original magnetic conditions; synchronizing sampling of the signal lines and applying reset pulse series to the magnetic cores so that every second sampling is preceded by the first reset pulse and succeeded by the second reset pulse of a reset pulse series; evaluating simultaneously the iNquiry result control signals derived in response to the first and second reset pulses of n reset pulse series to determine when signal pulses are applied to the signal lines: and causing registration of evaluated signal pulses to provide an indication of the number of signal pulses applied to each signal line.
Claim 3
Dependent Claim
46 words
The method as recited in claim 1 further comprising: storing intermediately the inquiry result control signals successively derived during the (n-1) reset pulse series immediately preceeding the nth reset pulse series; and evaluating simultaneously the inquiry result control signals derived over n successive reset pulse series.
Claim 4
Dependent Claim
27 words
The method as recited in claim 2 further comprising: maintaining the sampling frequency time period where tj represents the time duration of the shortest undistorted signal pulse.
Claim 5
Dependent Claim
115 words
The method as recited i claim 1 further comprising: maintaining the sampling frequency time period where tj represents the time duration of the shortest undistorted signal pulse; producing a single intermediate signal from the inquiry result control signals derived during each of the (n-1) reset pulse series immediately preceding the nth reset pulse series when production of said signal is indicative of the continued application of a signal pulse; storing intermediately single intermediate signals: and evaluating simultaneously the inquiry result control signals derived in response to the first and second reset pulses of the nth reset pulse series and the stored single intermediate signals to determine when signal pulses are applied to the signal lines.
Claim 6
Dependent Claim
20 words
The method recited in claim 1 further comprising: evaluating simultaneously inquiry result control signals over n 2 reset pulse series.
Claim 7
Dependent Claim
17 words
The method recited in claim 1 further comprising blocking signals of a predetermined polarity from being evaluated.
Claim 8
Dependent Claim
9 words
The method recited in claim 1 wherein tFR 2(tFab).
Claim 9
Dependent Claim
26 words
The method as recited in claim 4 wherein only a succession of binary one inquiry result signals will permit a binary one to be intermediately stored.
References Cited (Backward Citations)
US2924665A
Cited
US3342939A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-08 | 1974-08-10 | 1975-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-08 | 1978-08-10 | 1979-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-08 | 1982-08-10 | 1983-02-09 | $7700.00 | Window Closed / Lapsed |