US3628081A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Progressively erasing and updating storage tube for ecg. display
Assignee: American Optical Corp
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Filing: 1969-10-29
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Granted: 1971-12-14
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Expires: 1989-10-29
Abstract
Abstract An ECG. display on which the ECG. signal appears on a storage cathode-ray tube. Instead of erasing the entire display at the end of each line trace, only a short segment at the leftmost side of the trace is erased. As the new sweep begins, the old trace is progressively erased. In effect, an ''''erase'''' signal precedes the write beam as it moves from left to right across the screen. The arrangement permits display of each ECG. waveform for the maximum time period.
Inventors
- 👤 Barouh V Berkovitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:54
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/24; A61B5/316; A61B5/318; A61B5/339; G; G01; G01R; G01R13/00; G01R13/20; G01R13/22; G01R13/225
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
75 words
In a storage cathode-ray tube system in which a write beam sweeps across the face of a storage cathode-ray tube in one direction, the improvement comprising means for erasing the stored signal contained within any one of a plurality of sections of the display perpendicular to said one direction, and means for sequentially erasing the display in successive sections in the same direction in which said write beam sweeps across the face of the tube.
Claim 2
Dependent Claim
75 words
In a storage cathode-ray tube system in which a write beam sweeps across the face of a storage cathode-ray tube in one direction, the improvement comprising means for erasing the stored signal contained within any one of a plurality of sections of the display perpendicular to said one direction, and means for sequentially erasing the display in successive sections in the same direction in which said write beam sweeps across the face of the tube.
Claim 3
Dependent Claim
52 words
An improved storage cathode-ray tube system in accordance with claim 1 wherein said erasing means controls the erasure of the display in any one of said sections when the write beam is in the preceding section in the direction of the sweep of said write beam across the face of said tube.
Claim 4
Dependent Claim
44 words
An improved storage cathode-ray tube system in accordance with claim 2 wherein said erasing means includes a tube backplate segmented into a plurality of sections perpendicular to said one direction and means for applying an erase pulse to any one of said segments individually.
Claim 5
Dependent Claim
44 words
An improved storage cathode-ray tube system in accordance with claim 1 wherein said erasing means includes a tube backplate segmented into a plurality of sections perpendicular to said one direction and means for applying an erase pulse to any one of said segments individually.
Claim 6
Dependent Claim
40 words
An improved storage cathode-ray tube system in accordance with claim 4 wherein said segmented backplace sections are sequentially pulsed at a rate determined by the time required for said write beam to sweep across the face of the cathode-ray tube.
Claim 7
Dependent Claim
91 words
In a storage cathode-ray tube having a source of a write beam which sweeps across the face of the tube and a backplate which when pulsed erases the stored signal adjacent to it, the improvement comprising the arrangement of said backplate in a plurality of sections each perpendicular to the direction in which said write beam sweeps across the face of the tube, and means connected to each of said backplate sections for transmitting thereto a pulse for erasing only that portion of the stored signal adjacent to the particular section.
Claim 8
Dependent Claim
91 words
In a storage cathode-ray tube having a source of a write beam which sweeps across the face of the tube and a backplate which when pulsed erases the stored signal adjacent to it, the improvement comprising the arrangement of said backplate in a plurality of sections each perpendicular to the direction in which said write beam sweeps across the face of the tube, and means connected to each of said backplate sections for transmitting thereto a pulse for erasing only that portion of the stored signal adjacent to the particular section.
Claim 9
Dependent Claim
78 words
An ECG. signal storage system comprising a storage cathode-ray tube in which a write beam sweeps across the face of the tube, means for controlling the deflection of said write beam in a direction perpendicular to the direction of said sweep in accordance with the magnitude of an ECG. signal, and means for continuously erasing only a portion of the signal stored in said cathode-ray tube in the direction of said sweep in front of said write beam.
Claim 10
Dependent Claim
78 words
An ECG. signal storage system comprising a storage cathode-ray tube in which a write beam sweeps across the face of the tube, means for controlling the deflection of said write beam in a direction perpendicular to the direction of said sweep in accordance with the magnitude of an ECG. signal, and means for continuously erasing only a portion of the signal stored in said cathode-ray tube in the direction of said sweep in front of said write beam.
Claim 11
Dependent Claim
53 words
An ECG. signal storage system in accordance with claim 7 wherein said erasing means includes a backplate on said cathode-ray tube segmented into a plurality of sections perpendicular to the direction of said sweep and means for applying erase pulses to successive segments of said backplate sequentially in the direction of said sweep.
Claim 12
Dependent Claim
39 words
An ECG. signal storage system in accordance with claim 8 wherein said segmented backplate sections are sequentially pulsed at a rate determined by the time required for said write beam to sweep across the face of said cathode-ray tube.
Claim 13
Dependent Claim
45 words
An ECG. signal storage system in accordance with claim 6 wherein the rate at which the storage signal is erased in front of said write beam is dependent upon the time required for said write beam to sweep across the face of the cathode-ray tube.
Claim 14
Dependent Claim
112 words
In a storage cathode-ray tube used for storing a ECG. signal and having a source of a write beam which sweeps across the face of the tube and is deflected in accordance with the magnitude of an ECG. signal, and a backplate which when pulsed erases the stored ECG. signal adjacent to it, the improvement comprising the arrangement of said backplate in a plurality of sections each perpendicular to the direction in which said write beam sweeps across the face of the tube, and means connected to each of said backplate sections for transmitting thereto a pulse for erasing only that portion of the stored ECG. signal adjacent to the particular section.
Claim 15
Dependent Claim
112 words
In a storage cathode-ray tube used for storing a ECG. signal and having a source of a write beam which sweeps across the face of the tube and is deflected in accordance with the magnitude of an ECG. signal, and a backplate which when pulsed erases the stored ECG. signal adjacent to it, the improvement comprising the arrangement of said backplate in a plurality of sections each perpendicular to the direction in which said write beam sweeps across the face of the tube, and means connected to each of said backplate sections for transmitting thereto a pulse for erasing only that portion of the stored ECG. signal adjacent to the particular section.
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) | 1974-12-13 | 1975-06-14 | 1975-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-13 | 1979-06-14 | 1979-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-13 | 1983-06-14 | 1983-12-14 | $7700.00 | Window Closed / Lapsed |