US3870871A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vector magnitude summing circuit
Assignee: Individual
•
Filing: 1973-11-29
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Granted: 1975-03-11
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Expires: 1993-11-29
Abstract
Abstract An apparatus is disclosed for summing two input signals having magnitudes representing the magnitude of quantities occurring in perpendicular directions. The apparatus is operative to produce an output signal having a magnitude representing approximately the square root of the sum of the squares of the magnitudes of the input signals.
Inventors
- 👤 Thomas Edward Nead
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:25
CPC Classifications
G; G06; G06G; G06G7/00; G06G7/12; G06G7/22
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
161 words
An apparatus for producing a vector signal representing approximately the vector magnitude of first and second input signals representing quantitative magnitudes occurring in perpendicular directions, the apparatus comprising: a. means responsive to the first and second input signals for producing first and second control signals respectively; b. a first means having an output and inputs connected to the producing means for modifying the first control signal by a first fractional constant and the second control signal by a second fractional constant to provide a first output signal therefrom; and c. a second means having an output connected to the output of the first modifying means and inputs connected to the producing means for modifying the first control signal by the second fractional constant and thE second control signal by the first fractional constant to provide a second output signal therefrom, whereby said first and second means being operative to sustain as the vector signal the output signal having the larger magnitude.
Claim 2
Independent Claim
161 words
An apparatus for producing a vector signal representing approximately the vector magnitude of first and second input signals representing quantitative magnitudes occurring in perpendicular directions, the apparatus comprising: a. means responsive to the first and second input signals for producing first and second control signals respectively; b. a first means having an output and inputs connected to the producing means for modifying the first control signal by a first fractional constant and the second control signal by a second fractional constant to provide a first output signal therefrom; and c. a second means having an output connected to the output of the first modifying means and inputs connected to the producing means for modifying the first control signal by the second fractional constant and thE second control signal by the first fractional constant to provide a second output signal therefrom, whereby said first and second means being operative to sustain as the vector signal the output signal having the larger magnitude.
Claim 3
Independent Claim
161 words
An apparatus for producing a vector signal representing approximately the vector magnitude of first and second input signals representing quantitative magnitudes occurring in perpendicular directions, the apparatus comprising: a. means responsive to the first and second input signals for producing first and second control signals respectively; b. a first means having an output and inputs connected to the producing means for modifying the first control signal by a first fractional constant and the second control signal by a second fractional constant to provide a first output signal therefrom; and c. a second means having an output connected to the output of the first modifying means and inputs connected to the producing means for modifying the first control signal by the second fractional constant and thE second control signal by the first fractional constant to provide a second output signal therefrom, whereby said first and second means being operative to sustain as the vector signal the output signal having the larger magnitude.
Claim 4
Independent Claim
161 words
An apparatus for producing a vector signal representing approximately the vector magnitude of first and second input signals representing quantitative magnitudes occurring in perpendicular directions, the apparatus comprising: a. means responsive to the first and second input signals for producing first and second control signals respectively; b. a first means having an output and inputs connected to the producing means for modifying the first control signal by a first fractional constant and the second control signal by a second fractional constant to provide a first output signal therefrom; and c. a second means having an output connected to the output of the first modifying means and inputs connected to the producing means for modifying the first control signal by the second fractional constant and thE second control signal by the first fractional constant to provide a second output signal therefrom, whereby said first and second means being operative to sustain as the vector signal the output signal having the larger magnitude.
Claim 5
Dependent Claim
56 words
The apparatus of claim 1, wherein the producing means further comprises: a. a first amplifier circuit responsive to the first input signal for producing the first control signal of a first predetermined polarity; and b. a second amplifier circuit responsive to the second input signal for producing the second control signal of the first predetermined polarity.
Claim 6
Dependent Claim
120 words
The apparatus of claim 2, wherein the first modifying means further comprises: a. a first resistive element responsive to the first control signal for scaling the first control signal by the first fractional constant; b. a second resistive element having one end thereof forming a junction with one end of the first resistive element, said second resistive element being responsive to the second control signal for scaling the second control signal by the second fractional constant; and c. a first operational amplifier circuit having an input connected to the junction between the first and second resistive elements, said first operational amplifier circuit providing on an output thereof the first output signal having a first magnitude and a second predetermined polarity.
Claim 7
Dependent Claim
167 words
The apparatus of claim 3, wherein the second modifying means further comprises: a. a third resistive element responsive to the first control signal for scaling the first control signal by the second fractional constant; b. a fourth resistive element having one end thereof forming a junction with one end of the third resistive element, said fourth resistive element being responsive to the second control signal for scaling the second control signal by the first fractional constant; and c. a second operational amplifier circuit having an output connected to the output of the first operational amplifier circuit and an input connected to the junction between the third and fourth resistive elements, said second operational amplifier circuit providing on the output thereof the second output signal having a second magnitude and the second predetermined polarity, whereby said first and second operational amplifier circuits being operative to compare the magnitudes of the first and second output signals and maintain as the vector signal the output signal having the greater magnitude.
Claim 8
Dependent Claim
15 words
The apparatus of claim 4, wherein said first fractional constant being approximately equal to 96/100.
Claim 9
Dependent Claim
15 words
The apparatus of claim 5, wherein said second fractional constant being approximately equal to 4/10.
Claim 10
Dependent Claim
76 words
The apparatus of claim 6, wherein each of said first and second operational amplifier circuits further comprises: a. an operational amplifier connected in the inverting mode and having one input connected to the junction between the resistive elements; b. a unidirectional conducting device having an anode connected to an output of the amplifier and a cathode; c. a resistive element connected between the cathode of the unidirectional conducting device and the junction between the resistive elements.
Claim 11
Dependent Claim
24 words
The apparatus of claim 7, wherein the cathodes of the unidirectional conducting devices in the first and second operational amplifier circuits are connected together.
Claim 12
Dependent Claim
44 words
The apparatus of claim 8, wherein each of the first and second operational amplifier circuits further comprises a second unidirectional conducting device having an anode connected to the junction between the resistive elements and a cathode connected to the output of the operational amplifier.
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 |