US3717809A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for automatic recording of spectra
Assignee: Individual
•
Filing: 1970-07-06
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Granted: 1973-02-20
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Expires: 1990-07-06
Abstract
Abstract A device for the automatic recording of spectra includes a spectrometer the scanning of which is controlled by a computer over a prescribed number of scans. The computer produces output signals indicative of the mean values resulting from the scans over the prescribed number of scans, as a result of scanning the values over the number of scans divided by either the number of scans or the square root of the number of scans. Address memories are coupled to the computer for identifying the position of the initiation of a point in the scan where the signal amplitude resulting therefrom exceeds a predetermined value and that point subsequent thereto where the signal value drops below the mean value. Threshold generators and comparators are employed to control the initiation of storage and resetting of the address memories. Furthermore, the scanning counter is connected to a control system which, in turn, controls the storage of information in the address memories.
Inventors
- 👤 G Laukien
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:31
CPC Classifications
G; G01; G01R; G01R33/00; G01R33/20; G01R33/60; G01R33/44; G01R33/46
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
157 words
In a method for recording spectra, especially nuclear and electron resonance spectra, comprising the steps of: scanning a sample of material to produce at least one signal representative of the characteristics of the sample, over a frequency spectrum, a plurality of times in succession, to detect spectrum signal values having prescribed characteristics; and reducing the signal values detected within at least one prescribed range within said spectrum to a mean value; the improvement wherein said step of scanning comprises scanning the sample over a spectrum range, other than said at least one prescribed range, at a rate faster than the rate at which said at least one prescribed range is scanned in response to the amplitude of the signal values detected during the scanning of the sample, so that the portion of the spectrum other than said at least one prescribed range over which said sample is scanned will be scanned at an increased speed or skipped.
Claim 2
Dependent Claim
157 words
In a method for recording spectra, especially nuclear and electron resonance spectra, comprising the steps of: scanning a sample of material to produce at least one signal representative of the characteristics of the sample, over a frequency spectrum, a plurality of times in succession, to detect spectrum signal values having prescribed characteristics; and reducing the signal values detected within at least one prescribed range within said spectrum to a mean value; the improvement wherein said step of scanning comprises scanning the sample over a spectrum range, other than said at least one prescribed range, at a rate faster than the rate at which said at least one prescribed range is scanned in response to the amplitude of the signal values detected during the scanning of the sample, so that the portion of the spectrum other than said at least one prescribed range over which said sample is scanned will be scanned at an increased speed or skipped.
Claim 3
Dependent Claim
157 words
In a method for recording spectra, especially nuclear and electron resonance spectra, comprising the steps of: scanning a sample of material to produce at least one signal representative of the characteristics of the sample, over a frequency spectrum, a plurality of times in succession, to detect spectrum signal values having prescribed characteristics; and reducing the signal values detected within at least one prescribed range within said spectrum to a mean value; the improvement wherein said step of scanning comprises scanning the sample over a spectrum range, other than said at least one prescribed range, at a rate faster than the rate at which said at least one prescribed range is scanned in response to the amplitude of the signal values detected during the scanning of the sample, so that the portion of the spectrum other than said at least one prescribed range over which said sample is scanned will be scanned at an increased speed or skipped.
Claim 4
Dependent Claim
157 words
In a method for recording spectra, especially nuclear and electron resonance spectra, comprising the steps of: scanning a sample of material to produce at least one signal representative of the characteristics of the sample, over a frequency spectrum, a plurality of times in succession, to detect spectrum signal values having prescribed characteristics; and reducing the signal values detected within at least one prescribed range within said spectrum to a mean value; the improvement wherein said step of scanning comprises scanning the sample over a spectrum range, other than said at least one prescribed range, at a rate faster than the rate at which said at least one prescribed range is scanned in response to the amplitude of the signal values detected during the scanning of the sample, so that the portion of the spectrum other than said at least one prescribed range over which said sample is scanned will be scanned at an increased speed or skipped.
Claim 5
Dependent Claim
55 words
A method according to claim 1, further including the steps of comparing the amplitude of detected signal values with a preselected threshold value and setting the limits of said at least one prescribed range in response to the points at which said detected signal values rise above and fall below said preselected threshold value, respectively.
Claim 6
Dependent Claim
56 words
A method according to claim 2, further comprising the step of repeating the scanning of said sample over said at least one preselected range when the detected signal amplitude for said range fails to exceed a predetermined value for a specified spectrum interval following the initial point in the spectrum from which said range is defined.
Claim 7
Dependent Claim
50 words
A method according to claim 1, wherein the limits of said at least prescribed range, over which at least one subsequent scan is to be carried out, are determined in response to the values detected during the initial scan, by scanning the total spectrum initially at a constant scanning speed.
Claim 8
Independent Claim
214 words
A device for the recording of spectra comprising: a spectrometer for producing a spectrum of signal values to be recorded; a computer, coupled to said spectrometer, for controlling the step-by-step scanning of the spectrum by said spectrometer and for storing and reducing to a mean specified signal amplitude values provided by said spectrometer; first means, responsive to the output of said spectrometer and being coupled to said computer, for storing the address corresponding to a first point in the spectrum being scanned by said spectrometer, at which the signal amplitude value produced by said spectrometer reaches a first threshold value; second means, responsive to the output of said spectrometer and being coupled to said computer, for storing the address corresponding to a second point in said spectrum subsequent to said first point, at which the signal amplitude value provided by said spectrometer drops below said first threshold value; and third means, responsive to the outputs of said first and second means and coupled to said spectrometer, for limiting the rate of scanning of said spectrometer over at least one prescribed range defined by the contents of said first and second means, to a rate lower than the rate of scanning of the portion of the spectrum other than said at least one prescribed range.
Claim 9
Independent Claim
214 words
A device for the recording of spectra comprising: a spectrometer for producing a spectrum of signal values to be recorded; a computer, coupled to said spectrometer, for controlling the step-by-step scanning of the spectrum by said spectrometer and for storing and reducing to a mean specified signal amplitude values provided by said spectrometer; first means, responsive to the output of said spectrometer and being coupled to said computer, for storing the address corresponding to a first point in the spectrum being scanned by said spectrometer, at which the signal amplitude value produced by said spectrometer reaches a first threshold value; second means, responsive to the output of said spectrometer and being coupled to said computer, for storing the address corresponding to a second point in said spectrum subsequent to said first point, at which the signal amplitude value provided by said spectrometer drops below said first threshold value; and third means, responsive to the outputs of said first and second means and coupled to said spectrometer, for limiting the rate of scanning of said spectrometer over at least one prescribed range defined by the contents of said first and second means, to a rate lower than the rate of scanning of the portion of the spectrum other than said at least one prescribed range.
References Cited (Backward Citations)
US3297860A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-20 | 1976-08-21 | 1977-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-20 | 1980-08-21 | 1981-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-20 | 1984-08-21 | 1985-02-20 | $7700.00 | Window Closed / Lapsed |