US3930256A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for standardizing a maximum value of an out-put signal corresponding to an input analog signal
Assignee: Toshiba Corp
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Filing: 1974-04-08
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Granted: 1975-12-30
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Expires: 1994-04-08
Abstract
Abstract A device for standardizing the maximum value of an output signal corresponding to an input analog signal comprises an A-D converter for converting an input analog signal into digital signals in a manner to correspond to a standard reference voltage or to a compensated reference voltage; a means for storing during an initiating period the maximum value of the output signals from the A-D converter which correspond to the standard reference voltage; a means for obtaining a compensation voltage from an analog signal corresponding to the complementary signal of the maximum value; and a means for operating the A-D converter, after lapse of the initiating period, in response to a compensated reference voltage obtained through subtraction of the compensation voltage from the standard reference voltage, to obtain from the A-D converter an output signal having a predetermined maximum value.
Inventors
- 👤 Hiroshi Amemiya
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:42
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/24; A61B5/30; H; H03; H03M; H03M1/00; H03M1/12; H03M1/18; H03M1/181; H03M1/182
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
193 words
A device for standardizing the maximum value of an output signal corresponding to an input analog signal, comprising an analog-digital converter for converting an input analog signal into digital signals in a manner to correspond to a standard reference voltage or a compensated reference voltage; an output register for storing the output digital signal of the analogdigital converter for each predetermined period corresponding to a sampling period of the analog-digital converter and for permitting the stored signal to be read out therefrom; a first means for storing through the output register the maximum-valued one of the digital signals from the analog-digital converter which corresponds to the standard reference voltage, and for producing a complementary signal of the maximum-valued digital signal; a second means for converting the complementary signal into an analog signal and producing a compensation voltage; and a third means for supplying, after lapse of an initiating period, to the analog-digital converter, a compensated reference voltage obtained through the subtraction of the level of the compensation voltage from the level of the standard reference voltage, to obtain from the analog-digital converter an output whose maximum value is standardized to a predetermined level.
Claim 2
Independent Claim
193 words
A device for standardizing the maximum value of an output signal corresponding to an input analog signal, comprising an analog-digital converter for converting an input analog signal into digital signals in a manner to correspond to a standard reference voltage or a compensated reference voltage; an output register for storing the output digital signal of the analogdigital converter for each predetermined period corresponding to a sampling period of the analog-digital converter and for permitting the stored signal to be read out therefrom; a first means for storing through the output register the maximum-valued one of the digital signals from the analog-digital converter which corresponds to the standard reference voltage, and for producing a complementary signal of the maximum-valued digital signal; a second means for converting the complementary signal into an analog signal and producing a compensation voltage; and a third means for supplying, after lapse of an initiating period, to the analog-digital converter, a compensated reference voltage obtained through the subtraction of the level of the compensation voltage from the level of the standard reference voltage, to obtain from the analog-digital converter an output whose maximum value is standardized to a predetermined level.
Claim 3
Dependent Claim
110 words
A device according to claim 1 in which said first means includes a maximum value register for storing the maximun-valued digital signal and producing a complementary signal corresponding to the maximum-valued signal; a gate circuit for supplying the output register, through a switch adapted to be closed during the initiating period, to the maximum value register only when a gate signal is supplied; and a comparator circuit for comparing the output of the maximum value register and the output of the output register and supplying the gate signal to the gate circuit only when the output of the output register is greater than the output of the maximum value register.
Claim 4
Dependent Claim
23 words
A device according to claim 1, further including a digital-analog converter for converting the output of the output register into an analog signal.
Claim 5
Dependent Claim
37 words
A device according to claim 1 in which said second means has a digital-analog converter for converting the complementary signal into an analog signal and an amplitude control circuit for controlling the amplitude of this analog signal.
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) | 1978-12-29 | 1979-06-30 | 1979-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-29 | 1983-06-30 | 1983-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-29 | 1987-06-30 | 1987-12-30 | $7700.00 | Window Closed / Lapsed |