US4096575A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Delay time compensation incorporating two sensing devices
Assignee: Nissan Motor Co Ltd
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Filing: 1977-04-05
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Granted: 1978-06-20
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Expires: 1997-04-05
Abstract
Abstract A delay time compensation circuit includes a pair of first and second sensing devices having different time constant values. The outputs from the sensing devices are each differentiated and at the same time compared to provide a difference signal. Both differentiated and difference signals are processed into an output which represents a value to compensate for errors resulting from the first-order time lag of the sensing devices. The compensating output is added to the output from the first sensing device.
Inventors
- 👤 Takane Itoh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:32
CPC Classifications
G; G01; G01D; G01D3/00; G01D3/028; G01D3/036; G01D3/0365; G01K; G01K7/00; G01K7/02; G01K7/021; G01K7/42
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
120 words
A delay compensation circuit comprising: first and second sensing devices each having a different time constant value of the first order time lag; first and second differentiators connected to said first and second sensing devices, respectively; a subtractor connected to said first and second sensing devices to provide an output representing the difference between the outputs from said devices; a processing circuit receptive of the outputs from said first and second differentiators and said subtractor for generating an output which represents the difference between a physical quantity to be measured and the output from said first sensing devices; and a summation circuit for providing summation of the output from said first sensing device and the output from said processing circuit.
Claim 2
Dependent Claim
120 words
A delay compensation circuit comprising: first and second sensing devices each having a different time constant value of the first order time lag; first and second differentiators connected to said first and second sensing devices, respectively; a subtractor connected to said first and second sensing devices to provide an output representing the difference between the outputs from said devices; a processing circuit receptive of the outputs from said first and second differentiators and said subtractor for generating an output which represents the difference between a physical quantity to be measured and the output from said first sensing devices; and a summation circuit for providing summation of the output from said first sensing device and the output from said processing circuit.
Claim 3
Dependent Claim
69 words
A delay compensation circuit as claimed in claim 1, wherein said processing circuit includes a second subtractor for generating an output representing the difference between the outputs from said first and second differentiators, a divider for dividing the output from said second differentiator by the output from said second subtractor, and a multiplier for providing multiplication of the output from said first-mentioned subtractor and the output from said divider.
Claim 4
Dependent Claim
61 words
A delay compensation circuit as claimed in claim 2, wherein said processing circuit includes means for multiplying the output from said first differentiator by the ratio of the time constant value of said first sensing device to the time constant value of said second sensing device, the output from said multiplying means being connected to one input of said second subtractor.
Claim 5
Dependent Claim
21 words
A delay compensation circuit as claimed in claim 1, wherein each of said first and second sensing devices comprises a thermocouple.
Claim 6
Dependent Claim
130 words
In a radiation energy detector having a pair of radiation sensitive elements each having a different time constant of the first-order time lag from the other element, the combination comprising: first and second differentiators connected to said first and second radiation sensitive elements, respectively; a subtractor connected to said first and second radiation sensitive elements to provide an output representing the difference between the outputs from said elements; a processing circuit receptive of the outputs from said first and second differentiators and said subtractor for generating an output which represents the difference between the radiation energy to be measured and the output from said first sensitive element; and a summation circuit for providing summation of the output from said first radiation sensitive element and the output from said processing circuit.
Claim 7
Dependent Claim
130 words
In a radiation energy detector having a pair of radiation sensitive elements each having a different time constant of the first-order time lag from the other element, the combination comprising: first and second differentiators connected to said first and second radiation sensitive elements, respectively; a subtractor connected to said first and second radiation sensitive elements to provide an output representing the difference between the outputs from said elements; a processing circuit receptive of the outputs from said first and second differentiators and said subtractor for generating an output which represents the difference between the radiation energy to be measured and the output from said first sensitive element; and a summation circuit for providing summation of the output from said first radiation sensitive element and the output from said processing circuit.
References Cited (Backward Citations)
US3374435A
Cited
US3946211A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-06-19 | 1981-12-19 | 1982-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-19 | 1985-12-19 | 1986-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-19 | 1989-12-19 | 1990-06-20 | $7700.00 | Window Closed / Lapsed |