US3852718A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for interpreting numerically coded pulse groupings in a line
Assignee: Individual
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Filing: 1973-10-25
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Granted: 1974-12-03
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Expires: 1993-10-25
Abstract
Abstract An electrical supervisory signaling system employing a plurality of McCulloh-type pulse transmitters which are operable selectively to transmit over a line one or more like groups, or ''''rounds,'''' of time-spaced, numerically coded pulses. Single''''round'''' and multiple-''''round'''' transmissions are used to indicate different monitored conditions. Receiving these pulses in the system is an interpreter which, through examining the time spacings between successive pulses, both distinguishes the transmissions from the different transmitters, and indicates whether a transmission from a given transmitter contains one or more ''''rounds'''' of pulses.
Inventors
- 👤 Lyria K De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:46
CPC Classifications
G; G08; G08B; G08B25/00; G08B25/01; G08B25/04; G08B25/045
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
335 words
An interpreter for use in an electrical signaling system of the type which includes a transmission line and a plurality of coded signalers operatively connected to said line, each signaler being operable selectively to produce and transmit over said line one or more like-coded groups of time-spaced electrical pulses, with each such group including a plurality of pulse sections each containing one or more pulses depending upon the particular code associated with the signaler, with the times between adjacent pulses in a section under all circumstances being shorter than the times between adjacent sections in a group, and with the latter-mentioned times under all circumstances being shorter than the times between successive groups produced by the signaler, said interpreter in operative condition comprising a code-reading circuit operatively coupled to said line and constructed to read the particular code of each coded group of pulses transmitted in the line, a code-discriminating circuit for each different signaler in the system, each operatively connected to said code-reading circuit and operable to indicate a reading by the latter of the particular code associated with the code-reading circuit''s associated signaler, a pulse-group-spacing-monitoring circuit operatively coupled to said line and constructed to respond to the transmission therein of coded groups of pulses, and to generate, following the completion of such a group, a response of one type if another coded group of pulses follows within a preselected time span, and a response of another type if no such successive group follows within said preselected time span, and an output circuit for each code-discriminating circuit operatively connected thereto and to said pulse-group-spacingmonitoring circuit, each operable, with its associated codediscriminating circuit indicating a reading of its associated code, to produce an output signal of one type on said pulsegroup-spacing-monitoring circuit generating a response of said one type, and to produce an output signal of another type on the pulse-group-spacing-monitoring circuit generating a response of said other type, each output circuit including means inhibiting the simultaneous production thereby of both types of output signals.
Claim 2
Dependent Claim
335 words
An interpreter for use in an electrical signaling system of the type which includes a transmission line and a plurality of coded signalers operatively connected to said line, each signaler being operable selectively to produce and transmit over said line one or more like-coded groups of time-spaced electrical pulses, with each such group including a plurality of pulse sections each containing one or more pulses depending upon the particular code associated with the signaler, with the times between adjacent pulses in a section under all circumstances being shorter than the times between adjacent sections in a group, and with the latter-mentioned times under all circumstances being shorter than the times between successive groups produced by the signaler, said interpreter in operative condition comprising a code-reading circuit operatively coupled to said line and constructed to read the particular code of each coded group of pulses transmitted in the line, a code-discriminating circuit for each different signaler in the system, each operatively connected to said code-reading circuit and operable to indicate a reading by the latter of the particular code associated with the code-reading circuit''s associated signaler, a pulse-group-spacing-monitoring circuit operatively coupled to said line and constructed to respond to the transmission therein of coded groups of pulses, and to generate, following the completion of such a group, a response of one type if another coded group of pulses follows within a preselected time span, and a response of another type if no such successive group follows within said preselected time span, and an output circuit for each code-discriminating circuit operatively connected thereto and to said pulse-group-spacingmonitoring circuit, each operable, with its associated codediscriminating circuit indicating a reading of its associated code, to produce an output signal of one type on said pulsegroup-spacing-monitoring circuit generating a response of said one type, and to produce an output signal of another type on the pulse-group-spacing-monitoring circuit generating a response of said other type, each output circuit including means inhibiting the simultaneous production thereby of both types of output signals.
Claim 3
Dependent Claim
58 words
The interpreter of claim 1 which further includes an input circuit operatively connected between said line and said code-reading and pulse-group-spacing-monitoring circuits for processing pulses transmitted in the line for inputting into the latter-mentioned two circuits, said input circuit being constructed to generate, for each pulse transmitted by a signaler in the system, a time-related, controlled-duration follower pulse.
Claim 4
Dependent Claim
145 words
The interpreter of claim 1, wherein said code-reading circuit includes: a timing circuit for discerning and identifying the different pulse sections in a coded group of pulses through monitoring the time spacings between successive pulses in a group to locate a spacing greater than that expected between adjacent pulses in a section but less than that expected between adjacent sections in a group; a read pulse generator operatively connected to said timing circuit for generating a read pulse on the timing circuit identifying a section in a group; a resettable pulse counter operatively connected both to said line and to said read pulse generator, constructed to count pulses transmitted in the line, and to be reset to a zero-count condition on each occurrence of a read pulse; and a resettable section counter operatively connected to said read pulse generator for counting read pulses generated thereby.
Claim 5
Dependent Claim
68 words
The interpreter of claim 3, wherein each code-discriminating circuit comprises a memory programmed in accordance with the code associated with the code-discriminating circuit, each memory being operatively connected to said read pulse generator and to said counters, and being operable to produce a sustained indication following, but only following, receipt over said line of a group of pulses coded in accordance with the code associated with the memory.
Claim 6
Dependent Claim
143 words
The interpreter of claim 1, wherein said pulse-group-spacing-monitoring circuit includes: a timing circuit for discerning and identifying different successive coded groups of pulses through monitoring the time spacings between successive pulses transmitted in the line to locate a spacing greater than that expected between adjacent sections in a group but less than that expected between successive like groups transmitted by a signaler; and an interval decision circuit operatively connected to said timing circuit for following the intervals between successive pulse group identifications by said timing circuit, said interval decision circuit effecting generation by said pulse-group-spacing-monitoring circuit of a response of said one type on said timing circuit identifying the beginning of a new pulse group within a preselected interval following its previous identification of a pulse group, and effecting a response by said pulse-group-spacing-monitoring circuit of said other type under all other circumstances.
Claim 7
Dependent Claim
328 words
In an electrical signaling system of the type which includes a transmission line, and a plurality of coded signalers operatively connected to said line, each signaler being operable selectively to produce and transmit over said line one or more like-coded groups of time-spaced electrical pulses, with each such group including a plurality of pulse sections each containing one or more pulses depending upon the particular code associated with the signaler, with the times between adjacent pulses in a section under all circumstances being shorter than the times between adjacent sections in a group, and with the latter-mentioned times under all circumstances being shorter than the times between successive groups produced by the signaler, an interpreter comprising a code-reading circuit operatively coupled to said line and constructed to read the particular code of each coded group of pulses transmitted in the line, a code-discriminating circuit for each different signaler in the system, each operatively connected to said code-reading circuit and operable to indicate a reading by the latter of the particular code associated with the code-reading circuit''s associated signaler, a pulse-group-spacing-monitoring circuit operatively coupled to said line and constructed to respond to the transmission therein of coded groups of pulses, and to generate, following the completion of such a group, a response of one type if another coded group of pulses follows within a preselected time span, and a response of another type if no such successive group follows within said preselected time span, and an output circuit for each code-discriminating circuit operatively connected thereto and to said pulse-group-spacing-monitoring circuit, each operable, with its associated code-discriminating circuit indicating a reading of its associated code, to produce an output signal of one type on said pulse-group-spacing-monitoring circuit generating a response of said one type, and to produce an output signal of another tyPe on the pulse-group-spacing-monitoring circuit generating a response of said other type, each output circuit including means inhibiting the simultaneous production thereby of both types of output signals.
Claim 8
Dependent Claim
328 words
In an electrical signaling system of the type which includes a transmission line, and a plurality of coded signalers operatively connected to said line, each signaler being operable selectively to produce and transmit over said line one or more like-coded groups of time-spaced electrical pulses, with each such group including a plurality of pulse sections each containing one or more pulses depending upon the particular code associated with the signaler, with the times between adjacent pulses in a section under all circumstances being shorter than the times between adjacent sections in a group, and with the latter-mentioned times under all circumstances being shorter than the times between successive groups produced by the signaler, an interpreter comprising a code-reading circuit operatively coupled to said line and constructed to read the particular code of each coded group of pulses transmitted in the line, a code-discriminating circuit for each different signaler in the system, each operatively connected to said code-reading circuit and operable to indicate a reading by the latter of the particular code associated with the code-reading circuit''s associated signaler, a pulse-group-spacing-monitoring circuit operatively coupled to said line and constructed to respond to the transmission therein of coded groups of pulses, and to generate, following the completion of such a group, a response of one type if another coded group of pulses follows within a preselected time span, and a response of another type if no such successive group follows within said preselected time span, and an output circuit for each code-discriminating circuit operatively connected thereto and to said pulse-group-spacing-monitoring circuit, each operable, with its associated code-discriminating circuit indicating a reading of its associated code, to produce an output signal of one type on said pulse-group-spacing-monitoring circuit generating a response of said one type, and to produce an output signal of another tyPe on the pulse-group-spacing-monitoring circuit generating a response of said other type, each output circuit including means inhibiting the simultaneous production thereby of both types of output signals.
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) | 1977-12-02 | 1978-06-03 | 1978-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-02 | 1982-06-03 | 1982-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-02 | 1986-06-03 | 1986-12-03 | $7700.00 | Window Closed / Lapsed |