US3863161A
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Digital method and apparatus for dynamically monitoring the frequency of a frequency varying signal
Assignee: Boeing North American Inc
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Filing: 1973-11-28
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Granted: 1975-01-28
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Expires: 1993-11-28
Abstract
Abstract A frequency varying electrical signal, such as an FM signal, is broken down into N pulse streams, each stream beginning with a pulse for a different successive cycle of the signal and containing a pulse for each K(P + 1)N cycle thereafter, where K is a consecutively increasing number beginning with the integer one and P is the number of cycles between successive pulse stream producing cycles of the signal. Each stream gives rise to a different group of pulses, each pulse having a fixed area for each pulse in its respective stream, after which the pulses from the N groups are serially combined into a single pulse stream in the same order in which they are generated.
Inventors
- 👤 Frederick W Johnson
- 👤 Dale W Trent
- 👤 Raymond P Escoffier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:21
CPC Classifications
H; H03; H03D; H03D3/00; H03D3/02; H03D3/04
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
182 words
Apparatus for dynamically monitoring the frequency of a frequency-varying sinusoidal signal, comprising: threshold circuit means for receiving the sinusoidal signal and providing in response thereto a series of pulses, each pulse being generated during a different cycle of the signal whenever the signal magnitude exceeds a predetermined threshold value; frequency divider circuit means for providing N streams of pulses in response to said series of pulses, each pulse stream having a pulse for a different successive one of the pulses in said series and containing a pulse for each K(P + 1)N series pulse thereafter where K is a consecutively increasing number starting with the integer 1 and P equals the number of series pulses in between successive pulse stream producing series pulses; and pulse generating circuit means for providing N groups of pulses, each group being generated in response to a different one of said pulse streams and containing a fixed area pulse for each pulse in its corresponding stream and serially combining said groups of pulses into a Single pulse stream in the same order in which they were generated.
Claim 2
Dependent Claim
182 words
Apparatus for dynamically monitoring the frequency of a frequency-varying sinusoidal signal, comprising: threshold circuit means for receiving the sinusoidal signal and providing in response thereto a series of pulses, each pulse being generated during a different cycle of the signal whenever the signal magnitude exceeds a predetermined threshold value; frequency divider circuit means for providing N streams of pulses in response to said series of pulses, each pulse stream having a pulse for a different successive one of the pulses in said series and containing a pulse for each K(P + 1)N series pulse thereafter where K is a consecutively increasing number starting with the integer 1 and P equals the number of series pulses in between successive pulse stream producing series pulses; and pulse generating circuit means for providing N groups of pulses, each group being generated in response to a different one of said pulse streams and containing a fixed area pulse for each pulse in its corresponding stream and serially combining said groups of pulses into a Single pulse stream in the same order in which they were generated.
Claim 3
Dependent Claim
9 words
The apparatus of claim 1 where P is 0.
Claim 4
Dependent Claim
48 words
The apparatus of claim 2 wherein N is 2 and pulses in one of said pulse groups are generated in response to the leading edge and pulses in the other group are generated in response to the trailing edge of pulses in one of the two pulse streams.
Claim 5
Dependent Claim
38 words
The apparatus of claim 1 including a pulse rate monitor circuit for providing an output signal whose magnitude in a linear function of the rate at which pulses in said single pulse stream are received at its input.
Claim 6
Dependent Claim
139 words
Apparatus for dynamically monitoring the frequency of a frequency-varying signal comprising: frequency divider circuit means for providing N streams of pulses in reponse to the signal, each pulse stream having a pulse for a different successive one of the cycles of the signal and containing a pulse for each K(P + 1) N cycle thereafter where K is a consecutively increasing number starting with the integer 1 and P equals the number of cycles between successive pulse stream producing cycles; and pulse generating circuit means for providing N groups of pulses, each group being generated in response to a different one of said pulse streams and containing a fixed area pulse for each pulse in its correpsonding stream and serially combining said groups of pulses into a single pulse stream in the same order in which they were generated.
Claim 7
Dependent Claim
139 words
Apparatus for dynamically monitoring the frequency of a frequency-varying signal comprising: frequency divider circuit means for providing N streams of pulses in reponse to the signal, each pulse stream having a pulse for a different successive one of the cycles of the signal and containing a pulse for each K(P + 1) N cycle thereafter where K is a consecutively increasing number starting with the integer 1 and P equals the number of cycles between successive pulse stream producing cycles; and pulse generating circuit means for providing N groups of pulses, each group being generated in response to a different one of said pulse streams and containing a fixed area pulse for each pulse in its correpsonding stream and serially combining said groups of pulses into a single pulse stream in the same order in which they were generated.
Claim 8
Dependent Claim
9 words
The apparatus of claim 5 wherein P is 0.
Claim 9
Dependent Claim
48 words
The apparatus of claim 6 wherein N is 2 and pulses in one of said pulse groups are generated in response to the leading edge and pulses in the other group are generated in response to the trailing edge of pulses in one of the two pulse streams.
Claim 10
Dependent Claim
38 words
The apparatus of claim 5 including pulse rate monitor circuit means for providing an output signal whose magnitude is a linear function of the rate at which pulses in said single pulse stream are received at its input.
Claim 11
Independent Claim
123 words
A method of dynamically monitoring the frequency of a frequency-varying electrical signal comprising: generating N pulse stream from the electrical signal, each stream beginning with a pulse for a different successive cycle of the signal and containing a pulse for each K(P + 1)N cycle thereafter where K is a consecutively increasing number starting with the integer 1 and P equals the number of cycles between successive pulse stream producing cycles; and generating and serially combining into a single pulse stream in the same order in which they are generated fixed area pulses distributed in N group wherein each group is associated with a different one of said N streams and contains a fixed area pulse for each pulse in its associated stream.
Claim 12
Independent Claim
123 words
A method of dynamically monitoring the frequency of a frequency-varying electrical signal comprising: generating N pulse stream from the electrical signal, each stream beginning with a pulse for a different successive cycle of the signal and containing a pulse for each K(P + 1)N cycle thereafter where K is a consecutively increasing number starting with the integer 1 and P equals the number of cycles between successive pulse stream producing cycles; and generating and serially combining into a single pulse stream in the same order in which they are generated fixed area pulses distributed in N group wherein each group is associated with a different one of said N streams and contains a fixed area pulse for each pulse in its associated stream.
Claim 13
Dependent Claim
9 words
The method of claim 9 wherein P is 0.
Claim 14
Dependent Claim
34 words
The method of claim 9 including applying said single pulse stream to a pulse rate monitor circuit to develop a signal whose magnitude is a function of the rate at which pulses are received.
Claim 15
Dependent Claim
123 words
Apparatus for dynamically monitoring the frequency of a frequency-varying signal comprising: frequency divider circuit means for providing N streams of pulses in response to the signal each pulse stream having a pulse for a different consecutive one of the half-cycles of the signal and containing a pulse for each KN half-cycle thereafter where K is a consecutively increasing number starting with the integer one; and pulse generating circuit means for providing N groups of pulses, each group being generated in response to a different one of said pulse streams and containing a fixed area pulse foar each pulse in its corresponding stream and serially combining said groups of pulses into a single pulse stream in the same order in which they were generated.
Claim 16
Dependent Claim
123 words
Apparatus for dynamically monitoring the frequency of a frequency-varying signal comprising: frequency divider circuit means for providing N streams of pulses in response to the signal each pulse stream having a pulse for a different consecutive one of the half-cycles of the signal and containing a pulse for each KN half-cycle thereafter where K is a consecutively increasing number starting with the integer one; and pulse generating circuit means for providing N groups of pulses, each group being generated in response to a different one of said pulse streams and containing a fixed area pulse foar each pulse in its corresponding stream and serially combining said groups of pulses into a single pulse stream in the same order in which they were generated.
Claim 17
Independent Claim
108 words
A method of dynamically monitoring the frequency of a frEquency-varying electrical signal comprising: generating N pulse streams from the electrical signal, each stream beginning with a pulse for a different consecutive halfcycle of the signal and containing a pulse for each Kn halfcycle thereafter where K is a consecutively increasing number starting with the integer one; and generating and serially combining into a single pulse stream in the same order in which they are generated fixed area pulses distributed in N groups wherein each group is associated with a different one of said N streams and contains a fixed area pulse for each pulse in its associated streams.
Claim 18
Independent Claim
108 words
A method of dynamically monitoring the frequency of a frEquency-varying electrical signal comprising: generating N pulse streams from the electrical signal, each stream beginning with a pulse for a different consecutive halfcycle of the signal and containing a pulse for each Kn halfcycle thereafter where K is a consecutively increasing number starting with the integer one; and generating and serially combining into a single pulse stream in the same order in which they are generated fixed area pulses distributed in N groups wherein each group is associated with a different one of said N streams and contains a fixed area pulse for each pulse in its associated streams.
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) | 1978-01-27 | 1978-07-29 | 1979-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-27 | 1982-07-29 | 1983-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-27 | 1986-07-29 | 1987-01-28 | $7700.00 | Window Closed / Lapsed |