US3769541A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Line width modulated display system
Assignee: General Electric Co
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Filing: 1971-09-28
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Granted: 1973-10-30
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Expires: 1991-09-28
Abstract
Abstract In a two dimensional display, the width of the line trace is modulated according to displacement in one direction of the display. Utilizing an oscilloscope as the display mechanism, for example, a plurality of closely spaced sawtooth waveforms in the vertical coordinate are utilized in producing the trace as it is scanned in the horizontal coordinate. Width modulation is obtained by modulating the beam intensity between an on and off condition.
Inventors
- 👤 D Wood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 18:17
CPC Classifications
G; G01; G01R; G01R13/00; G01R13/20; G01R13/22; G01R13/26
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
78 words
A display system comprising: input means for receiving an input signal to be displayed; display means coupled to said input means for displaying said signal as at least one line trace; local signal generating means for generating a comparison signal; and comparator means for comparing the amplitude of said input signal with said comparison signal and providing an output signal to said display means for varying the width of said line trace as a function of said comparison.
Claim 2
Dependent Claim
78 words
A display system comprising: input means for receiving an input signal to be displayed; display means coupled to said input means for displaying said signal as at least one line trace; local signal generating means for generating a comparison signal; and comparator means for comparing the amplitude of said input signal with said comparison signal and providing an output signal to said display means for varying the width of said line trace as a function of said comparison.
Claim 3
Dependent Claim
55 words
A display system as set forth in claim 1 wherein the displacement and width of said line trace is proportional to the amplitude of said input signal, the width of said line trace producing two distinguishable edges to said trace, and wherein the amplitude of said input signal is indicated by one of said edges.
Claim 4
Dependent Claim
21 words
A display system as set forth in claim 2 wherein said edge is the higher amplitude edge of said line trace.
Claim 5
Dependent Claim
97 words
A display system comprising: sawtooth generating means for producing a repetitive sawtooth waveform; input means for receiving input signals to be displayed; comparator means for comparing the amplitude of said input signals with said sawtooth waveform and producing a control signal in accordance therewith; blanking means coupled to and controlled by said control signal for selectively blanking the display; and means for combining said sawtooth waveform with the amplitude of said input signals to produce at least one line trace of variable width comprising a series of closely spaced scans in the amplitude direction of the display.
Claim 6
Dependent Claim
97 words
A display system comprising: sawtooth generating means for producing a repetitive sawtooth waveform; input means for receiving input signals to be displayed; comparator means for comparing the amplitude of said input signals with said sawtooth waveform and producing a control signal in accordance therewith; blanking means coupled to and controlled by said control signal for selectively blanking the display; and means for combining said sawtooth waveform with the amplitude of said input signals to produce at least one line trace of variable width comprising a series of closely spaced scans in the amplitude direction of the display.
Claim 7
Dependent Claim
25 words
A display system as set forth in claim 4 wherein said combining means additively combines said sawtooth waveform with the amplitude of said input signals.
Claim 8
Dependent Claim
25 words
A display system as set forth in claim 5 wherein said combining means subtractively combines said sawtooth waveform with the amplitude of said input signals.
Claim 9
Dependent Claim
39 words
A display system as set forth in claim 4 and further comprising: proportioning means interconnecting said sawtooth generating means and said combining means for varying the proportion of said sawtooth waveform in said combination of sawtooth and input signals.
Claim 10
Dependent Claim
33 words
A display system as set forth in claim 7 and further comprising minimum trace width control means coupled to the input of said comparator means for establishing the minimum width of said trace.
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) | 1976-10-29 | 1977-04-30 | 1977-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-29 | 1981-04-30 | 1981-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-29 | 1985-04-30 | 1985-10-30 | $7700.00 | Window Closed / Lapsed |