US3947841A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Channel electron multiplier signal detector and digitizer
Assignee: United States Department of the Army
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Filing: 1973-08-28
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Granted: 1976-03-30
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Expires: 1993-08-28
Abstract
Abstract A device for digitalizing oscilloscope traces of fast transient signals isrovided in which a plurality of channel electron multipliers are arranged with their cathodes in a coordinate array in the path of a cathode ray beam such that the trace of the beam thereacross energizes those channel electron multipliers in the path of the oscilloscope trace. These multipliers remain energized until their anodes and associated anode circuits are scanned by a digital indexing device in a predetermined raster, synchronized with the oscilloscope, by which the respective coordinates of the energized multipliers are determined and stored in a memory so that the trace can be reproduced at any given time for subsequent analysis.
Inventors
- 👤 Thomas A. Tumolillo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:57
CPC Classifications
G; G01; G01R; G01R13/00; G01R13/20; G01R13/22; G01R13/225; G01R13/40; G01R13/404; G01R13/408
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
178 words
Means for digitizing oscilloscope traces of transient waveforms and the like defined by the path of travel of an electron beam, comprising: oscilloscope means having a predetermined scan rate generating said electron beam, said oscilloscope having a main envelope; a plurality of channel electron multipliers within said main envelope having anodes and cathodes with said cathodes arranged in a substantially planar array defined by coordinate parameters in the path of said electron beam; a stable output responsive means at each of said anodes generating an output signal in response to the impingement of said electron beam on a corresponding cathode; converter means for strobing said output responsive means to sample said output signals in a predetermined sequence correlated to said coordinate parameters and generating digital signals indicating the presence or absence of a said output signal; and memory means driven by said converter means for storing said digital signals in said predetermined sequence to thereby store a digital representation of the path of travel of said electron beam across said cathodes as a function of said coordinate parameters.
Claim 2
Dependent Claim
178 words
Means for digitizing oscilloscope traces of transient waveforms and the like defined by the path of travel of an electron beam, comprising: oscilloscope means having a predetermined scan rate generating said electron beam, said oscilloscope having a main envelope; a plurality of channel electron multipliers within said main envelope having anodes and cathodes with said cathodes arranged in a substantially planar array defined by coordinate parameters in the path of said electron beam; a stable output responsive means at each of said anodes generating an output signal in response to the impingement of said electron beam on a corresponding cathode; converter means for strobing said output responsive means to sample said output signals in a predetermined sequence correlated to said coordinate parameters and generating digital signals indicating the presence or absence of a said output signal; and memory means driven by said converter means for storing said digital signals in said predetermined sequence to thereby store a digital representation of the path of travel of said electron beam across said cathodes as a function of said coordinate parameters.
Claim 3
Dependent Claim
68 words
The invention defined in claim 1, wherein said channel electron multipliers produce an output pulse at the respective anodes thereof in response to impingement of said electron beam on corresponding ones of said cathodes; and wherein each of said output responsive means comprises pulse responsive means generating said output signal for an indeterminate duration in response to a said output pulse at a corresponding one of said anodes.
Claim 4
Dependent Claim
33 words
The invention defined in claim 2, wherein there is further provided means for constraining each of said output responsive means to terminate its output signal when said converter means samples said output signal.
Claim 5
Dependent Claim
34 words
The invention defined in claim 1, including circuit means interconnecting said converter means and said oscilloscope means to synchronize the strobe rate of said converter means with said scan rate of said oscilloscope means.
Claim 6
Dependent Claim
96 words
The invention defined in claim 1, wherein said channel electron multipliers produce an output pulse at the respective anodes thereof in response to impingement of said electron beam on corresponding ones of said cathodes; wherein each of said output responsive means comprises pulse responsive means generating said output signal for an indeterminate duration in response to a said output pulse at a corresponding one of said anodes; and including circuit means interconnecting said converter means and said oscilloscope means to synchronize the strobe rate of said converter means with said scan rate of said oscilloscope means.
Claim 7
Dependent Claim
33 words
The invention defined in claim 5, wherein there is further provided means for constraining each of said output responsive means to terminate its ouput signal when said converter means samples said output signal.
Claim 8
Dependent Claim
36 words
The invention defined in claim 1, wherein said coordinate parameters comprise an X, Y Cartesian coordinate system defining said substantially planar array of cathodes in rows and columns designated, respectively, by said X and Y coordinates.
Claim 9
Dependent Claim
25 words
The invention defined in claim 7, wherein said coordinates define addresses in said memory means correlated with said predetermined strobe sequence of said converter means.
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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) | 1979-03-30 | 1979-09-29 | 1980-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-30 | 1983-09-29 | 1984-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-30 | 1987-09-29 | 1988-03-30 | $7700.00 | Window Closed / Lapsed |