US3870828A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Superimposed binary signal
Assignee: Paradyne Corp
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Filing: 1973-09-06
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Granted: 1975-03-11
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Expires: 1993-09-06
Abstract
Abstract Superimposed channel signalling device to transmit control functions by superimposing supervisory or secondary channel signals with high speed primary channel signals comprising signal superimposing means to overlay supervisory channel signals on high speed primary channel signals for transmission as a combined or summed signal from local data terminal equipment to a remote system and signal separator means to separate superimposed supervisory channel signals from high speed primary channel signals at the remote receiving data terminal equipment.
Inventors
- 👤 Thomas V Saliga
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:20
CPC Classifications
H; H04; H04J; H04J3/00; H04J3/02; H04J3/12; H04J7/00; H04L; H04L5/00; H04L5/02; H04L5/04
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
187 words
A superimposed channel signalling device for transferring secondary channel signals simultaneously with primary channel signals: said signalling device comprising transmitter means including signal superimposing means coupled between data termainal equipment and signal transmitter means and receiver means including signal separator means coupled between data terminal equipment and signal receiver means, said signal superimposing means comprising logic means to superimpose said secondary channel signals on said primary channel signals to generate a summed chaNnel signal for transmission by said signal transmitter means, said receiver means including decision logic means to determine the signal level of said primary channel signals, said signal separator means coupled to said decision logic means and said receiver means to receive said summed signal and said primary channel signal, said signal separator means comprising logic means to determine the magnitude of said superimposed secondary channel signals and secondary channel decision logic means coupled to said signal separator means, said secondary channel decision logic means including logic means to compare said secondary channel signal with a predetermined acceptance region to generate an output signal wherein said secondary channel signal is within a predetermined acceptance region.
Claim 2
Dependent Claim
187 words
A superimposed channel signalling device for transferring secondary channel signals simultaneously with primary channel signals: said signalling device comprising transmitter means including signal superimposing means coupled between data termainal equipment and signal transmitter means and receiver means including signal separator means coupled between data terminal equipment and signal receiver means, said signal superimposing means comprising logic means to superimpose said secondary channel signals on said primary channel signals to generate a summed chaNnel signal for transmission by said signal transmitter means, said receiver means including decision logic means to determine the signal level of said primary channel signals, said signal separator means coupled to said decision logic means and said receiver means to receive said summed signal and said primary channel signal, said signal separator means comprising logic means to determine the magnitude of said superimposed secondary channel signals and secondary channel decision logic means coupled to said signal separator means, said secondary channel decision logic means including logic means to compare said secondary channel signal with a predetermined acceptance region to generate an output signal wherein said secondary channel signal is within a predetermined acceptance region.
Claim 3
Dependent Claim
187 words
A superimposed channel signalling device for transferring secondary channel signals simultaneously with primary channel signals: said signalling device comprising transmitter means including signal superimposing means coupled between data termainal equipment and signal transmitter means and receiver means including signal separator means coupled between data terminal equipment and signal receiver means, said signal superimposing means comprising logic means to superimpose said secondary channel signals on said primary channel signals to generate a summed chaNnel signal for transmission by said signal transmitter means, said receiver means including decision logic means to determine the signal level of said primary channel signals, said signal separator means coupled to said decision logic means and said receiver means to receive said summed signal and said primary channel signal, said signal separator means comprising logic means to determine the magnitude of said superimposed secondary channel signals and secondary channel decision logic means coupled to said signal separator means, said secondary channel decision logic means including logic means to compare said secondary channel signal with a predetermined acceptance region to generate an output signal wherein said secondary channel signal is within a predetermined acceptance region.
Claim 4
Dependent Claim
187 words
A superimposed channel signalling device for transferring secondary channel signals simultaneously with primary channel signals: said signalling device comprising transmitter means including signal superimposing means coupled between data termainal equipment and signal transmitter means and receiver means including signal separator means coupled between data terminal equipment and signal receiver means, said signal superimposing means comprising logic means to superimpose said secondary channel signals on said primary channel signals to generate a summed chaNnel signal for transmission by said signal transmitter means, said receiver means including decision logic means to determine the signal level of said primary channel signals, said signal separator means coupled to said decision logic means and said receiver means to receive said summed signal and said primary channel signal, said signal separator means comprising logic means to determine the magnitude of said superimposed secondary channel signals and secondary channel decision logic means coupled to said signal separator means, said secondary channel decision logic means including logic means to compare said secondary channel signal with a predetermined acceptance region to generate an output signal wherein said secondary channel signal is within a predetermined acceptance region.
Claim 5
Dependent Claim
61 words
The superimposed channel signalling device of claim 1 wherein each of said secondary channel signals are superimposed over a predetermined plurality of said primary channel signals, said predetermined plurality being a function of said primary and said secondary channel signal rates, said secondary channel signals being integrated over a predetermined period corresponding to said predetermined plurality of said primary channel signals.
Claim 6
Dependent Claim
24 words
The superimposed channel signalling device of claim 1 wherein said secondary channel signal comprises an asynchronous state signal independent of said primary channel signal.
Claim 7
Dependent Claim
18 words
The superimposed channel signalling device of claim 1 wherein said secondary channel signal comprises a multistate synchronous signal.
Claim 8
Dependent Claim
61 words
The superimposed channel signalling device of claim 1 wherein said secondary channel signal decision logic means further includes energy threshold detection means coupled to said signal separator means, said energy threshold detection means including logic means to integrate said secondary channel signals over a predetermined period to generate an output signal when said integrated value is within a predetermined acceptance region.
Claim 9
Dependent Claim
91 words
The superimposed channel signalling device of claim 1 wherein said transmitter means includes a primary signal generator means comprising serial to parallel converter means to transform serial primary channel data signals from the data terminal equipment into a plurality of primary channel parallel signals and a digital to analog converter means coupled to said serial parallel converter means coupled to said serial parallel converter means to receive said parallel signals, said digital analog converter means including logic means to convert said parallel primary channel signals to a multi-level primary channel signal.
Claim 10
Dependent Claim
37 words
The superimposed channel signalling device of claim 6 wherein said transmitter means further includes randomizer means coupled between said serial to parallel converter means and said digital to analog converter means to randomize said primary channel signals.
Claim 11
Dependent Claim
62 words
The superimposed channel signalling device of claim 7 wherein said transmitter means further includes synchronization means comprising state detector means coupled between said randomizer means and rate multiplier means coupled to said state detector wherein said state detector means generates an enable signal which is fed to said rate multiplier means upon detection of a predetermined code pattern from said randomizer means.
Claim 12
Dependent Claim
33 words
The superimposed channel signalling device of claim 7 wherein said transmitter means further includes coder means coupled between said randomizer means and said signal level converter means to code said randomized parallel signals.
Claim 13
Dependent Claim
33 words
The superimposed channel signalling device of claim 9 wherein said receiver means includes a decoder means coupled to said decision logic means to decode said primary channel signals from said decision logic means.
Claim 14
Dependent Claim
29 words
The superimposed channel signalling device of claim 10 wherein said receive means further includes a derandomizing means coupled to said decoder means to decode said derandomized primary channel signals.
Claim 15
Dependent Claim
42 words
The superimposed channel signalLing device of claim 11 wherein said receive means further including a parallel to serial converter means coupled to said derandomizer means to receive said derandomized primary channel signals and convert said parallel signals to primary channel serial signal.
Claim 16
Dependent Claim
96 words
The superimposed signalling device of claim 11 wherein said secondary channel signal decision logic means comprises an integrator means coupled to said signal separator means to receive said secondary signals and to sum said secondary channel signals over a predetermined period and secondary channel binary decision means coupled to said integrator means to receive the output of said integrator means representative of said secondary channel signals to compare the value of said secondary channel signals to said predetermined acceptance region and generate an output upon receipt of said secondary channel signals within said predetermined acceptance region.
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) | 1978-03-10 | 1978-09-09 | 1979-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-10 | 1982-09-09 | 1983-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-10 | 1986-09-09 | 1987-03-11 | $7700.00 | Window Closed / Lapsed |