Patent US4889388A successfully refreshed from Google Patents.
Patent US4132928A successfully refreshed from Google Patents.
US4132928A
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Device for identifying waveforms in a multiple oscilloscope display
Assignee: United States Department of the Army
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Filing: 1977-04-28
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Granted: 1979-01-02
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Expires: 1997-04-28
Abstract
Abstract A new device for rapid identification of two or more analog signals simultaneously displayed upon an oscilloscope.
Inventors
- 👤 Howard M. Berlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:48
CPC Classifications
G; G01; G01R; G01R13/00; G01R13/20; G01R13/22; G01R13/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
An electronic device for visually distinguishing differences between plural traces representing plural input signals on a multichannel oscilloscope comprising: at least one 555 integrated circuit used as a square wave generator adapted to be coupled with said multichannel oscilloscope and have an additive signal effect on at least one of said plural input signals and cause it to appear on said oscilloscope as a signal trace with dots or dashes and be distinguishable from the other of said plural traces, wherein the frequency of said generator is greater than said input signal to create said dots or dashes, and wherein diodes are used to isolate a portion of the input signal from said generator.
Claim 2
Dependent Claim
114 words
An electronic device for visually distinguishing differences between plural traces representing plural input signals on a multichannel oscilloscope comprising: at least one 555 integrated circuit used as a square wave generator adapted to be coupled with said multichannel oscilloscope and have an additive signal effect on at least one of said plural input signals and cause it to appear on said oscilloscope as a signal trace with dots or dashes and be distinguishable from the other of said plural traces, wherein the frequency of said generator is greater than said input signal to create said dots or dashes, and wherein diodes are used to isolate a portion of the input signal from said generator.
References Cited (Backward Citations)
US3449671A
Cited
DE1962773A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-01-01 | 1982-07-03 | 1983-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-01 | 1986-07-03 | 1987-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-01 | 1990-07-03 | 1991-01-02 | $7700.00 | Window Closed / Lapsed |