US3798604A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for checking corporal functions
Assignee: US Philips Corp
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Filing: 1969-02-17
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Granted: 1974-03-19
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Expires: 1989-02-17
Abstract
Abstract A monitoring device comprising an oscilloscope having three inputs connected to three switching members. The first switching member receives signal voltages corresponding to the monitored parameters, whereas the second and third switching members receive upper and lower limit voltages of the signal voltages. The oscilloscope is scanned horizontally and vertically. The signal voltages and the limit voltages are sequentially scanned during each horizontal trace period and are compared with a sawtooth voltage synchronized with the vertical scan of the oscilloscope to produce control pulses that are applied to the oscilloscope beam control grid to intensity modulate same to simultaneously display the signal and limit voltages.
Inventors
- 👤 P Kuipers
- 👤 J Meerdink
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 06:28
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/02; G; G01; G01R; G01R13/00; G01R13/20; G01R13/22; G01R13/28
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
220 words
A device for monitoring a plurality of parameters and displaying measuring voltages corresponding thereto on the screen of a cathode-ray tube having a beam control electrode comprising, an oscilloscope including said cathode-ray tube, a plurality of inputs and means for quick vertical scanning and for slow horizontal scanning of the display screen of the cathode-ray tube, means connecting at least one of the inputs of the oscilloscope to said beam control electrode and to a number of switching members adapted to receive measuring voltages corresponding to the monitored parameters, means synchronized with the horizontal scanning means for sequentially operating said switching members so as to successively connect the input to a number of measuring voltages during mutually equal periods whereby each measuring voltage is connected once to the relevant input during a horizontal scanning period to vary the intensity of the cathode ray tube electron beam, and wherein the oscilloscope includes two further inputs, a corresponding number of switching members connected to said two further inputs and adapted to be connected to electric voltages which indicate a high and a low limit value of the respective measuring voltages, and wherein the latter switching members are operated in synchronism with the former switching members by said sequential operating means whereby the latter switching members are successively connected to said limit voltages.
Claim 2
Independent Claim
220 words
A device for monitoring a plurality of parameters and displaying measuring voltages corresponding thereto on the screen of a cathode-ray tube having a beam control electrode comprising, an oscilloscope including said cathode-ray tube, a plurality of inputs and means for quick vertical scanning and for slow horizontal scanning of the display screen of the cathode-ray tube, means connecting at least one of the inputs of the oscilloscope to said beam control electrode and to a number of switching members adapted to receive measuring voltages corresponding to the monitored parameters, means synchronized with the horizontal scanning means for sequentially operating said switching members so as to successively connect the input to a number of measuring voltages during mutually equal periods whereby each measuring voltage is connected once to the relevant input during a horizontal scanning period to vary the intensity of the cathode ray tube electron beam, and wherein the oscilloscope includes two further inputs, a corresponding number of switching members connected to said two further inputs and adapted to be connected to electric voltages which indicate a high and a low limit value of the respective measuring voltages, and wherein the latter switching members are operated in synchronism with the former switching members by said sequential operating means whereby the latter switching members are successively connected to said limit voltages.
Claim 3
Dependent Claim
55 words
A device as claimed in claim 1 further comprising means responsive to said limit voltages for varying the intensity of the CRT electron beam so as to cause parts of the display screen of the cathode-ray tube to luminesce, which parts are located on either side of the measuring range enclosed by the limit values.
Claim 4
Dependent Claim
24 words
A device as claimed in claim 2 wherein the beam varying means comprises pulse extension circuits which are controlled by a limit value voltage.
Claim 5
Dependent Claim
51 words
A device as claimed in claim 1 further comprising circuit means for coupling said switching members to the beam intensity control electrode of the cathode ray tube, said circuit means including means for displaying the measuring voltage at a greater intensity than the intensity used for displaying the limit value voltages.
Claim 6
Dependent Claim
35 words
A device as claimed in claim 1 further comprising a device coupled to said switching members which includes means for producing an alarm indication when the measuring voltage exceeds one of the limit value voltages.
Claim 7
Dependent Claim
34 words
A device as claimed in claim 5 wherein the alarm producing means includes means coupled to the beam control electrode for producing a light spot on the display screen to provide the alarm indication.
Claim 8
Dependent Claim
32 words
A device as claimed in claim 1 further comprising a mask disposed on the front side of the display screen and including vertical opaque sections arranged to separate the displayed measuring voltages.
Claim 9
Dependent Claim
70 words
A device as claimed in claim 1 further comprising first, second and third signal comparison devices, means individually connecting a first input of said comparison devices to said three inputs of the oscilloscope, means connecting said vertical scanning means to a second input of each of said comparison devices, and means connecting an output electrode of each comparison device to the beam intensity control electrode of the cathode ray tube.
Claim 10
Dependent Claim
58 words
A device as claimed in claim 8 further comprising an alarm device having an input coupled to the output electrodes of said first, second and third comparison devices and an output electrode coupled to said beam control electrode to apply a voltage pulse thereto whenever the measuring voltage exceeds the upper or lower values of the limit voltages.
Claim 11
Independent Claim
210 words
A device for monitoring a plurality of parameters and displaying measuring voltages corresponding thereto on the screen of a cathode-ray tube having a beam control electrode comprising, an oscilloscope including said cathode-ray tube, a plurality of inputs aNd means for quick vertical scanning and for slow horizontal scanning of the display screen of the cathode-ray tube, means connecting at least one of the inputs of the oscilloscope to said beam control electrode and to a number of switching members adapted to receive measuring voltages corresponding to the monitored parameters, means synchronized with the horizontal scanning means for sequentially operating said switching members so as to successively connect the input to a number of measuring voltages during mutually equal periods whereby each measuring voltage is connected once to the relevant input during a horizontal scanning period to vary the intensity of the cathode ray tube electron beam, and said connecting means includes signal comparison means having first and second inputs coupled to said oscilloscope input and to said vertical scanning means, respectively, and an output coupled to the beam intensity control electrode of the cathode ray tube to apply a pulse type signal thereto which unblanks the electron beam upon equality of the voltages appearing at said first and second inputs.
Claim 12
Independent Claim
210 words
A device for monitoring a plurality of parameters and displaying measuring voltages corresponding thereto on the screen of a cathode-ray tube having a beam control electrode comprising, an oscilloscope including said cathode-ray tube, a plurality of inputs aNd means for quick vertical scanning and for slow horizontal scanning of the display screen of the cathode-ray tube, means connecting at least one of the inputs of the oscilloscope to said beam control electrode and to a number of switching members adapted to receive measuring voltages corresponding to the monitored parameters, means synchronized with the horizontal scanning means for sequentially operating said switching members so as to successively connect the input to a number of measuring voltages during mutually equal periods whereby each measuring voltage is connected once to the relevant input during a horizontal scanning period to vary the intensity of the cathode ray tube electron beam, and said connecting means includes signal comparison means having first and second inputs coupled to said oscilloscope input and to said vertical scanning means, respectively, and an output coupled to the beam intensity control electrode of the cathode ray tube to apply a pulse type signal thereto which unblanks the electron beam upon equality of the voltages appearing at said first and second inputs.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-18 | 1977-09-17 | 1978-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-18 | 1981-09-17 | 1982-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-18 | 1985-09-17 | 1986-03-19 | $7700.00 | Window Closed / Lapsed |