US3793588A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for the transmission of synchronous pulse signals
Assignee: US Philips Corp
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Filing: 1973-03-05
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Granted: 1974-02-19
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Expires: 1993-03-05
Abstract
Abstract The invention relates to a device for the transmission of synchronous pulse signals comprising a source for pulses the instants of occurrence of which coincide with a series of equidistant clock pulses, a switching modulation device controlled by a carrier oscillator and an output filter.
Inventors
- 👤 P Gerwen
- 👤 W Harmsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:25
CPC Classifications
H; H04; H04L; H04L27/00; H04L27/02
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
108 words
A pulse transmission device comprising a source of clock pulses, a source of information pulse signals synchronized with said clock pulses, carrier oscillation generating means synchronized with said clock pulses, a series circuit coupled to said information pulse signal source comprising a switching modulator means coupled to said carrier oscillation generating means and a digital filter means coupled to said modulator means, said filter means comprising shift register means having a plurality of shift register elements with separate output circuits, means for combining the outputs of said series circuit, and a shift pulse generator synchronized with said clock pulses connected to shift the contents of said shift register.
Claim 2
Dependent Claim
108 words
A pulse transmission device comprising a source of clock pulses, a source of information pulse signals synchronized with said clock pulses, carrier oscillation generating means synchronized with said clock pulses, a series circuit coupled to said information pulse signal source comprising a switching modulator means coupled to said carrier oscillation generating means and a digital filter means coupled to said modulator means, said filter means comprising shift register means having a plurality of shift register elements with separate output circuits, means for combining the outputs of said series circuit, and a shift pulse generator synchronized with said clock pulses connected to shift the contents of said shift register.
Claim 3
Dependent Claim
31 words
A device as claimed in claim 1 wherein said combining means comprises a first plurality of separate attenuator means each connected to an output circuit of said shift register elements respectively.
Claim 4
Dependent Claim
51 words
A device as claimed in claim 2 wherein the attenuation of each attenuator means, counting from one end of said shift register, is equal to the attenuation of the attenuator means the same number of elements from the other end of said shift register and different from the remaining attenuator means.
Claim 5
Dependent Claim
39 words
A device as claimed in claim 1 wherein said switching modulator means comprises an amplitude modulator including an AND-gate having one input connected to said source of pulse signals and another input connected to said carrier oscillation generating means.
Claim 6
Dependent Claim
40 words
A device as claimed in claim 1 wherein said switching modulator means comprises a phase modulator including a modulo-2-adder having one input connected to said source of pulse signals and the other input connected to saId carrier oscillation generating means.
Claim 7
Dependent Claim
83 words
A device as claimed in claim 1 wherein said switching modulator means comprises a frequency modulator including two AND-gates and an OR-gate, the outputs of said AND gates being connected to the OR-gate inputs respectively, each AND-gate having a first input connected to said source of pulse signals, an inverter coupled between said source of pulse signals and one of said first inputs, each AND-gate having a second input, and means for applying carrier oscillations of different frequencies to said second inputs respectively.
Claim 8
Dependent Claim
41 words
A device as claimed in claim 1 wherein the frequency of said carrier oscillations is a multiple of the frequency of said clock pulses and the frequency of said shift pulses in a multiple of the frequency of said carrier oscillations.
Claim 9
Dependent Claim
53 words
A device as claimed in claim 2 wherein said combining means further comprises a second plurality of separate attenuator means each connected to an output circuit of said shift register elements respectively, and a plurality of switches for individually connecting the output of each attenuator means to the output of said combining means.
Claim 10
Dependent Claim
46 words
A device as claimed in claim 1 wherein said switching modulators means comprises a plurality of modulo-2-adders each having a first input connected to said output circuits respectively, a second input coupled to said carrier oscillator generating means, and an output coupled to the combining means.
Claim 11
Dependent Claim
17 words
A device as claimed in claim 1 wherein the carrier oscillation means comprises a frequency multiplying means.
Claim 12
Dependent Claim
17 words
A device as claimed in claim 1 wherein the shift pulse generator comprises a frequency multiplying means.
References Cited (Backward Citations)
US3261918A
Cited
US3521170A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-18 | 1977-08-20 | 1978-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-18 | 1981-08-20 | 1982-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-18 | 1985-08-20 | 1986-02-19 | $7700.00 | Window Closed / Lapsed |