Patent US3870872A successfully refreshed from Google Patents.
US3870872A
Expired / Lapsed
US
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Probability analog function computer
Assignee: Abbott Laboratories
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Filing: 1974-02-01
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Granted: 1975-03-11
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Expires: 1994-02-01
Abstract
Abstract A probability analog function computer is provided which has a pseudo Gaussian distribution function curve adjustable along a voltage coordinate axis to a selected probability voltage location and having its 2-sigma value adjustable to any desired width. The pseudo Gaussian distribution function curve is achieved in the computer by combining the transfer functions of two solid state differential amplifier circuits.
Inventors
- 👤 Wayne R Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:14
CPC Classifications
G; G06; G06G; G06G7/00; G06G7/12; G06G7/26
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
206 words
A probability analog function computer comprising: an input circuit for receiving input analog voltages; a first differential amplifier circuit connected to said input circuit for producing in accordance with a first transfer function curve a negativegoing output signal in response to analog input voltages below a predetermined reference voltage and a positive-going output signal in response to analog input voltages above said predetermined reference voltage; a second differential amplifier circuit connected to said input circuit for producing in accordance with a second transfer function curve a positive-going output signal in response to analog input voltages below said predetermined reference voltage and a negative-going output signal in response to analog input voltages below said predetermined reference voltage; a common output circuit connected to said differential amplifiers; an unbalancing impedance means interconnecting said differential amplifiers for displacing the cross-over point of said first and second transfer function curves to enable said output circuit to produce output signals in the vicinity of said cross-over point in accordance with an approximate Gaussian distribution function curve; means connected to said differential amplifiers for establishing a selected 2-sigma width for said Gaussian distribution function curve; and means connected to said differential amplifiers for establishing a selected value for said predetermined reference voltage.
Claim 2
Dependent Claim
206 words
A probability analog function computer comprising: an input circuit for receiving input analog voltages; a first differential amplifier circuit connected to said input circuit for producing in accordance with a first transfer function curve a negativegoing output signal in response to analog input voltages below a predetermined reference voltage and a positive-going output signal in response to analog input voltages above said predetermined reference voltage; a second differential amplifier circuit connected to said input circuit for producing in accordance with a second transfer function curve a positive-going output signal in response to analog input voltages below said predetermined reference voltage and a negative-going output signal in response to analog input voltages below said predetermined reference voltage; a common output circuit connected to said differential amplifiers; an unbalancing impedance means interconnecting said differential amplifiers for displacing the cross-over point of said first and second transfer function curves to enable said output circuit to produce output signals in the vicinity of said cross-over point in accordance with an approximate Gaussian distribution function curve; means connected to said differential amplifiers for establishing a selected 2-sigma width for said Gaussian distribution function curve; and means connected to said differential amplifiers for establishing a selected value for said predetermined reference voltage.
Claim 3
Dependent Claim
206 words
A probability analog function computer comprising: an input circuit for receiving input analog voltages; a first differential amplifier circuit connected to said input circuit for producing in accordance with a first transfer function curve a negative-going output signal in response to analog input voltages below a predetermined reference voltage and a positive-going output signal in response to analog input voltages above said predetermined reference voltage; a second differential amplifier circuit connected to said input circuit for producing in accordance with a second transfer function curve a positive-going output signal in response to analog input voltages below said predetermined reference voltage and a negative-going output signal in response to analog input voltages below said predetermined reference voltage; a common output circuit connected to said differential amplifiers; an unbalancing impedance means interconnecting said differential amplifiers for displacing the cross-over point of said first and second transfer function curves to enable said output circuit to produce output signals in the vicinity of said cross-over point in accordance with an approximate Gaussian distribution function curve; means connected to said differential amplifiers for establishing a selected 2-sigma width for said Gaussian distribution function curve; and means connected to said differential amplifiers for establishing a selected value for said predetermined reference voltage.
Claim 4
Dependent Claim
206 words
A probability analog function computer comprising: an input circuit for receiving input analog voltages; a first differential amplifier circuit connected to said input circuit for producing in accordance with a first transfer function curve a negative-going output signal in response to analog input voltages below a predetermined reference voltage and a positive-going output signal in response to analog input voltages above said predetermined reference voltage; a second differential amplifier circuit connected to said input circuit for producing in accordance with a second transfer function curve a positive-going output signal in response to analog input voltages below said predetermined reference voltage and a negative-going output signal in response to analog input voltages below said predetermined reference voltage; a common output circuit connected to said differential amplifiers; an unbalancing impedance means interconnecting said differential amplifiers for displacing the cross-over point of said first and second transfer function curves to enable said output circuit to produce output signals in the vicinity of said cross-over point in accordance with an approximate Gaussian distribution function curve; means connected to said differential amplifiers for establishing a selected 2-sigma width for said Gaussian distribution function curve; and means connected to said differential amplifiers for establishing a selected value for said predetermined reference voltage.
Claim 5
Dependent Claim
33 words
The probability analog function computer defined in claim 1, and which includes a potentiometer included in said means connected to said differential amplifiers for establishing different selected values for said predetermined reference voltage.
Claim 6
Dependent Claim
33 words
The probability analog function computer defined in claim 1, in which said means for controlling the 2-sigma width of said Gaussian distribution function curve includes a potentiometer for establishing different 2-sigma widths thereof.
Claim 7
Dependent Claim
191 words
A probability analog function computer comprising: an input circuit for receiving input analog voltages; a first differential amplifier circuit connected to said input circuit for producing in accordance with a first transfer function curve a negative-going output signal in response to analog input voltages below a predetermined reference voltage and a positive-going output signal in response to analog input voltages above said predetermined reference voltage; a second differential amplifier circuit connected to said input circuit for producing in accordance with a second transfer function curve a positive-going output signal in response to analog input voltages below said predetermined reference voltage and a negative-going output signal in response to analog input voltages below said predetermined reference voltage; a common output circuit connected to said differential amplifiers; an unbalancing impedance means interconnecting said differential amplifiers for displacing the cross-over point of said first and second transfer function curves to enable said output circuit to produce output signals in the vicinity of said cross-over point in accordance with an approximate Gaussian distribution function curve; and potentiometer means connected to said first and second differential amplifiers for establishing preset values for said predetermined reference voltage.
Claim 8
Dependent Claim
191 words
A probability analog function computer comprising: an input circuit for receiving input analog voltages; a first differential amplifier circuit connected to said input circuit for producing in accordance with a first transfer function curve a negative-going output signal in response to analog input voltages below a predetermined reference voltage and a positive-going output signal in response to analog input voltages above said predetermined reference voltage; a second differential amplifier circuit connected to said input circuit for producing in accordance with a second transfer function curve a positive-going output signal in response to analog input voltages below said predetermined reference voltage and a negative-going output signal in response to analog input voltages below said predetermined reference voltage; a common output circuit connected to said differential amplifiers; an unbalancing impedance means interconnecting said differential amplifiers for displacing the cross-over point of said first and second transfer function curves to enable said output circuit to produce output signals in the vicinity of said cross-over point in accordance with an approximate Gaussian distribution function curve; and potentiometer means connected to said first and second differential amplifiers for establishing preset values for said predetermined reference voltage.
Claim 9
Dependent Claim
190 words
A probability analog function computer comprising: an input circuit for receiving input analog voltages; a first differential amplifier circuit connected to said input circuit for producing in accordance with a first transfer function curve a negative-going output signal in response to analog input voltages below a predetermined reference voltage and a positive-going output signal in response to analog input voltages above said predetermined reference voltage; a second differential amplifier circuit connected to said input circuit for producing in accordance with a second transfer function curve a positive-going output signal in response to analog input voltages below said predetermined reference voltage and a negative-going output signal in response to analog input voltages below said predetermined reference voltage; a common output circuit connected to said differential amplifiers; an unbalancing impedance means interconnecting said differential amplifiers for displacing the cross-over point of said first and second transfer function curves to enable said output circuit to produce output signals in the vicinity of said cross-over point in accordance with an approximate Gaussian distribution function curve; and potentiometer means included in said input circuit for controlling the 2-sigma width of said Gaussian distribution function curve.
Claim 10
Dependent Claim
190 words
A probability analog function computer comprising: an input circuit for receiving input analog voltages; a first differential amplifier circuit connected to said input circuit for producing in accordance with a first transfer function curve a negative-going output signal in response to analog input voltages below a predetermined reference voltage and a positive-going output signal in response to analog input voltages above said predetermined reference voltage; a second differential amplifier circuit connected to said input circuit for producing in accordance with a second transfer function curve a positive-going output signal in response to analog input voltages below said predetermined reference voltage and a negative-going output signal in response to analog input voltages below said predetermined reference voltage; a common output circuit connected to said differential amplifiers; an unbalancing impedance means interconnecting said differential amplifiers for displacing the cross-over point of said first and second transfer function curves to enable said output circuit to produce output signals in the vicinity of said cross-over point in accordance with an approximate Gaussian distribution function curve; and potentiometer means included in said input circuit for controlling the 2-sigma width of said Gaussian distribution function curve.
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 |