US4203104A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Procedure of bargraph display for measured quantities
Assignee: US Philips Corp
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Filing: 1978-05-26
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Granted: 1980-05-13
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Expires: 1998-05-26
Abstract
Abstract A procedure for the display of measured quantities as a bargraph with the help of a row of addressable display elements, whereby the display elements are interconnected on one side into contiguous groups and on the other side according to like position within each group. Either the on-groups, in which all display elements are to be excited, or the mixed group, in which only a part of the display elements are to be excited, are addressed in a rapid alteration imperceptible to the eye of the beholder. The amplitude of the driving voltage across display elements in the mixed group is zero during the strobe interval for the on-groups.
Inventors
- 👤 Allan R. Kmetz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:22
CPC Classifications
G; G01; G01R; G01R13/00; G01R13/40; G01R13/404; G01R13/405
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
111 words
A process for the display of measured quantities as a bargraph with the help of a row of addressable display elements, comprising the steps of: interconnecting the display elements on one side into contiguous groups and on the other side according to like position within each group; addressing in a rapid alternation imperceptible to the eye of a beholder either the on-groups, in which all display elements are to be excited, or the mixed group, in which only a part of the display elements are to be excited; and maintaining the amplitude of the driving voltage across display elements in the mixed group zero during the strobe interval for the on-groups.
Claim 2
Dependent Claim
111 words
A process for the display of measured quantities as a bargraph with the help of a row of addressable display elements, comprising the steps of: interconnecting the display elements on one side into contiguous groups and on the other side according to like position within each group; addressing in a rapid alternation imperceptible to the eye of a beholder either the on-groups, in which all display elements are to be excited, or the mixed group, in which only a part of the display elements are to be excited; and maintaining the amplitude of the driving voltage across display elements in the mixed group zero during the strobe interval for the on-groups.
Claim 3
Dependent Claim
40 words
The process recited in claim 1 including the step of: maintaining the amplitude (v) of the strobe signal for the on-groups twice the amplitude (v) of the signal on the segment electrodes during the strobe interval for the mixed group.
Claim 4
Dependent Claim
32 words
The process recited in claim 2 including the step of: adding to all addressing waveforms a rectangular waveform with amplitude (-v/2) equal to half that of the signal applied to the segments.
Claim 5
Dependent Claim
36 words
The process recited in claims 1, 2 or 3 including the steps of: interconnecting several bargraphs as a single matrix; addressing all on-groups alike; addressing all off-groups alike; and addressing the various mixed groups by multiplexing.
References Cited (Backward Citations)
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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) | 1983-05-13 | 1983-11-12 | 1984-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-05-13 | 1987-11-12 | 1988-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-05-13 | 1991-11-12 | 1992-05-13 | $7700.00 | Window Closed / Lapsed |