US3652999A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for visualizing measured quantities
Assignee: Siemens AG
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Filing: 1970-04-13
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Granted: 1972-03-28
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Expires: 1990-04-13
Abstract
Abstract A device for making visible analogous time dependent measured quantities, for example, of an electrocardiogram by an electronic ray upon a screen, uses an analog digital converter to produce derived digital measured values. The device also uses at least one image repeating storer in which is stored a predetermined amount of measured quantities as individual digital measured values. These values are obtained from the storer in cycles and are delivered through a digital analog converter and a time deflecting device synchronized with the storer. The deflecting device periodically deflects the electronic ray with reference to the time axis of the screen. The present invention is particularly characterized in that the individual digitally stored measured values after conversion are transmitted as deviating voltage perpendicularly to the time axis upon a cathode ray oscillograph inscribing with brightness which remains uniform. The inscribing ray is key-darkened during its guided return to the initial position by the time deflecting device.
Inventors
- 👤 Bo Hjort
- 👤 Kurt K H A Berglund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 01:15
CPC Classifications
G; G09; G09G; G09G1/00; G09G1/06; G09G1/08; G09G1/12; G01; G01R; G01R13/00; G01R13/20; G01R13/208; G01R13/22; G01R13/34; G01R13/345; G09G1/10; G16; G16H; G16H30/00; G16H30/20; G16H40/00; G16H40/60; G16H40/63
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
169 words
A device for making visible analogous time dependent measured quantities, such as those of an electrocardiogram by an electronic ray upon a screen, said device having an analog digital converter producing derived digital measured values, at least one image repeating storer connected with the output of said analog digital converter and wherein a predetermined amount of measured quantities is stored as individual digital measured values, a digital analog converter, said values being obtained from said storer in cycles and delivered to and through said digital anolog converter, and a time-deflector connected with the output of said digital analog converter and synchronized with said storer for periodically deflecting the electronic ray relatively to the time axis of said screen, said device being particularly characterized by a cathode ray oscillograph inscribing with unvariable brightness, means supplying the individual digitally stored measured value after conversion as deviating voltage perpendicularly to the time axis to said oscillograph, and means extinguishing the inscribing ray while returning it to its initial position through the time-deflector.
Claim 2
Independent Claim
169 words
A device for making visible analogous time dependent measured quantities, such as those of an electrocardiogram by an electronic ray upon a screen, said device having an analog digital converter producing derived digital measured values, at least one image repeating storer connected with the output of said analog digital converter and wherein a predetermined amount of measured quantities is stored as individual digital measured values, a digital analog converter, said values being obtained from said storer in cycles and delivered to and through said digital anolog converter, and a time-deflector connected with the output of said digital analog converter and synchronized with said storer for periodically deflecting the electronic ray relatively to the time axis of said screen, said device being particularly characterized by a cathode ray oscillograph inscribing with unvariable brightness, means supplying the individual digitally stored measured value after conversion as deviating voltage perpendicularly to the time axis to said oscillograph, and means extinguishing the inscribing ray while returning it to its initial position through the time-deflector.
Claim 3
Dependent Claim
41 words
A device in accordance with claim 1, comprising means actuating said storer, the storer and the last-mentioned means withdrawing cyclically at will the stored measured values and reintroducing them without the introduction of new measured values or extinguishing of old ones.
Claim 4
Dependent Claim
56 words
A device in accordance with claim 1, comprising an additional image repeating storer between the analog digital converter and the cathode ray oscillograph and means operating the last-mentioned storer for continuously comparing old measured values with new ones and indicating an image containing deviations from the compared measuring values by increasing its brightness, width or amplitude.
Claim 5
Dependent Claim
51 words
A device in accordance with claim 3, having an AC generator with a frequency substantially higher than the image frequency and switching means actuated by the last-mentioned means for adding alternating voltage to the deviating voltage perpendicularly to the time axis during the duration of the image portion being set off.
Claim 6
Dependent Claim
95 words
A device in accordance with claim 1, comprising a pluralitY of image repeating storers, the number of said image repeating storers corresponding to the number of a plurality of time dependent measuring values to be visible upon the screen, said image repeating storers having inlets receiving one after the other in time sequence analog digitally converted measuring values, and having outlets with switched digital analog converters delivering the storer information also in time sequence as vertical deviating voltages to said oscillograph with a prevoltage being superposed corresponding to the perpendicular shifting of each image curve.
Claim 7
Dependent Claim
54 words
A device in accordance with claim 1, comprising a steering generator for steering the rotary speed of said image repeating storer and means actuated by said generator for removing each individual measured value supplied to the storer out of the storer after a number of storer cycles corresponding to the number of storer positions.
Claim 8
Dependent Claim
27 words
A device in accordance with claim 6, comprising a writing instrument connected to the output of the storer having an inscriber and receiving the removed measured values.
Claim 9
Dependent Claim
58 words
A device in accordance with claim 7, having means connected to the storer and inscriber and operative when transferring from measured values inscribed with delay to measured values inscribed without delay to increase correspondingly the image frequency of said storer and the speed of said inscriber until the delivered measured values correspond to measured values inscribed without delay.
Claim 10
Dependent Claim
42 words
A device in accordance with claim 6, wherein in the image repeating storer after the introduction of a new measured value all stored measured values are shifted to the extent of one position, the storer having means extinguishing the oldest measured value.
Claim 11
Dependent Claim
59 words
A device in accordance with claim 6, wherein the steering generator comprises means increasing the speed of the storer so that it can be read with higher speed than that of the introduction of new measured values, so that the measured values continuously removed from the storer are shifted stepwise from the outlet of the storer to its inlet.
References Cited (Backward Citations)
US3406387A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-03-28 | 1975-09-27 | 1976-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-28 | 1979-09-27 | 1980-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-28 | 1983-09-27 | 1984-03-28 | $7700.00 | Window Closed / Lapsed |