US4585975A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High speed Boolean logic trigger oscilloscope vertical amplifier with edge sensitivity and nested trigger
Assignee: Tektronix Inc
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Filing: 1983-04-21
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Granted: 1986-04-29
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Expires: 2003-04-21
Abstract
Abstract An oscilloscope vertical amplifier with Boolean combinatorial trigger generator capability is disclosed. While the display output is fully analog, the trigger output to the time base is digital with a user selectable Boolean function of the analog input signals. Also included is nested triggering, edge as well as level sensitivity, and a trigger filter to selectively inhibit high frequency events. The delay times of the analog and digital signal paths are matched by means of analog delay lines before presentation by a visual display to present the analog and digital signals in time coincidence to the oscilloscope main frame.
Inventors
- 👤 Warren K. Wimmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:02
CPC Classifications
G; G01; G01R; G01R13/00; G01R13/20; G01R13/22; G01R13/32; Y; Y02; Y02P; Y02P80/00; Y02P80/10; Y02P80/15
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
57 words
An oscilloscope vertical amplifier for processing and displaying multiple analog input signals, said vertical amplifier comprising: analog signal path means for receiving and processing said analog input signals for display on a viewing screen; and digital trigger path means for deriving a display trigger signal from a selectable Boolean logic word combination of said analog input signals.
Claim 2
Dependent Claim
57 words
An oscilloscope vertical amplifier for processing and displaying multiple analog input signals, said vertical amplifier comprising: analog signal path means for receiving and processing said analog input signals for display on a viewing screen; and digital trigger path means for deriving a display trigger signal from a selectable Boolean logic word combination of said analog input signals.
Claim 3
Dependent Claim
42 words
An oscilloscope vertical amplifier as in claim 1 wherein said analog signal path means includes signal delay means for delaying the processed analog input signals so that they occur in time coincidence with the display trigger signal from the trigger path means.
Claim 4
Dependent Claim
70 words
An oscilloscope vertical amplifier as in claim 1 wherein said digital trigger path means includes: trigger threshold generator means for providing selectable threshold voltages; comparator means for digitally reconstructing the analog input signals in response to the selectable threshold voltages and the analog input signals; and Boolean logic means for generating at least one display trigger signal from selectable Boolean logic word combinations of said digitally reconstructed analog input signals.
Claim 5
Dependent Claim
27 words
An oscilloscope vertical amplifier as in claim 1 wherein said Boolean logic combination is selected from at least one of the Boolean functions AND, OR, and NOT.
Claim 6
Dependent Claim
27 words
An oscilloscope vertical amplifier as in claim 3 wherein said Boolean logic combination is selected from at least one of the Boolean functions AND, OR and NOT.
Claim 7
Dependent Claim
27 words
An oscilloscope vertical amplifier as in claim 3 wherein said Boolean logic means includes a word recognizer means for generating a trigger signal for each word selected.
Claim 8
Dependent Claim
47 words
An oscilloscope vertical amplifier as in claim 6 wherein said digital trigger path means further comprises a trigger filter means for selectively inhibiting the trigger signal for each selected Boolean word when the duration of the particular trigger signal is shorter than a selected length of time.
Claim 9
Dependent Claim
38 words
An oscilloscope vertical amplifier as in claim 6 wherein said digital trigger path means further comprises nesting logic means for generating a display trigger signal that is a sequential combination of at least two Boolean word trigger signals.
Claim 10
Dependent Claim
43 words
An oscilloscope vertical amplifier as in claim 3 wherein said digital trigger path means further includes external clock means for generating a display trigger signal that is a Boolean logic combination of said digitally reconstructed analog input signals and an external clock signal.
Claim 11
Dependent Claim
77 words
An oscilloscope vertical amplifier as in claim 3 wherein said digital trigger path means further includes edge trigger means responsive to said Boolean logic word combinations for generating a display trigger signal that is timed to begin when the states of analog input signals are in the selected states as per the Boolean logic words as determined by the occurrence of at least one of the positive and negative transitions of at least one of those signals.
Claim 12
Dependent Claim
42 words
An oscilloscope vertical amplifier as in claim 10 wherein said analog signal path means includes signal delay means for delaying the processed analog input signals so that they occur in time coincidence with the display trigger signal from the trigger path means.
Claim 13
Dependent Claim
27 words
An oscilloscope vertical amplifier as in claim 10 wherein said Boolean logic combination is selected from at least one of the Boolean functions AND, OR, and NOT.
Claim 14
Dependent Claim
27 words
An oscilloscope vertical amplifier as in claim 10 wherein said Boolean logic means includes a word recognizer means for generating a trigger signal for each word selected.
Claim 15
Dependent Claim
45 words
An oscilloscope vertical amplifier as in claim 10 wherein said digital trigger path means further comprises a trigger filter means for selectively inhibiting the trigger signal for each selected Boolean word when the duration of the particular trigger signal is shorter than a selected duration.
Claim 16
Dependent Claim
38 words
An oscilloscope vertical amplifier as in claim 13 wherein said digital trigger path means further comprises nesting logic means for generating a display trigger signal that is a sequential combination of at least two Boolean word trigger signals.
Claim 17
Dependent Claim
43 words
An oscilloscope vertical amplifier as in claim 10 wherein said digital trigger path means further includes external clock means for generating a display trigger signal that is a Boolean logic combination of said digitally reconstructed analog input signals and an external clock signal.
Claim 18
Dependent Claim
51 words
An oscilloscope vertical amplifier as in claim 3 wherein: said digital trigger path means includes means for generating a trigger view signal; and said analog signal path means includes means for selectively adding the trigger view signal to the analog input signals for display in time coincidence one with the other.
Claim 19
Dependent Claim
51 words
An oscilloscope vertical amplifier as in claim 10 wherein: said digital trigger path means includes means for generating a trigger view signal; and said analog signal path means includes means for selectively adding the trigger view signal to the analog input signals for display in time coincidence one with the other.
References Cited (Backward Citations)
US4495642A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-04-28 | 1989-10-28 | 1990-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-04-28 | 1993-10-28 | 1994-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-04-28 | 1997-10-28 | 1998-04-29 | $7700.00 | Window Closed / Lapsed |