Patent US3771015A successfully refreshed from Google Patents.
US3771015A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light-emitting diode display
Assignee: Rosemount Inc
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Filing: 1972-02-09
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Granted: 1973-11-06
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Expires: 1992-02-09
Abstract
Abstract A visual display adapted to show an analog presentation which represents the value of a measured parameter, in response to coded digital electrical input signals that are proportional to the parameter. In one embodiment a column of energizable light elements is provided, along with logic circuit means for selecting and energizing a series of groups of elements of the column to form a visual display which represents a numerical value between 0 and 50. In another embodiment the logic circuit is utilized to control, sequentially, three light columns, each having a different scale value.
Inventors
- 👤 C Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:07
CPC Classifications
H; H03; H03M; H03M7/00; G; G01; G01R; G01R13/00; G01R13/40; G01R13/404; G01R13/405
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
212 words
A display system comprising a plurality of light elements arranged in groups, switching means for selectively connecting any of said light elements to an energizing source, control logic circuit means connected to said switching means to selective actuate said switching means for energizing predetermined ones of said light elements in response to digital coded signals including most significant and least significant bits, said control logic means including a plurality of decoder logic arrays, each connected to the switching means controlling a corresponding group of light elements, responsive, when enabled, to said least significant bits to actuate said switch means for selectively energizing said light elements within said corresponding group, and said control logic circuit means further including major logic circuit means, connected to said decoder logic circuits, responsive to the most significant bits of said coded signal to selectively enable one or more of said decoder logic circuits, said major control logic circuit means also providing control signals to said decoder logic circuits for energizing a series of groups of light elements in response to said most significant bits whereby the visual representation of the display comprises the composite of a series of energized groups of light elements and a number of energized light elements of a group not within said series.
Claim 2
Dependent Claim
212 words
A display system comprising a plurality of light elements arranged in groups, switching means for selectively connecting any of said light elements to an energizing source, control logic circuit means connected to said switching means to selective actuate said switching means for energizing predetermined ones of said light elements in response to digital coded signals including most significant and least significant bits, said control logic means including a plurality of decoder logic arrays, each connected to the switching means controlling a corresponding group of light elements, responsive, when enabled, to said least significant bits to actuate said switch means for selectively energizing said light elements within said corresponding group, and said control logic circuit means further including major logic circuit means, connected to said decoder logic circuits, responsive to the most significant bits of said coded signal to selectively enable one or more of said decoder logic circuits, said major control logic circuit means also providing control signals to said decoder logic circuits for energizing a series of groups of light elements in response to said most significant bits whereby the visual representation of the display comprises the composite of a series of energized groups of light elements and a number of energized light elements of a group not within said series.
Claim 3
Dependent Claim
14 words
The display system of claim 1 wherein said light elements comprise light emitting diodes.
Claim 4
Dependent Claim
17 words
The display system of claim 2 wherein each of said groups includes up to eight light elements.
Claim 5
Dependent Claim
38 words
The display system of claim 2 wherein said groups of light elements comprise two or more light bars, each of said light bars connected to said switching means for sequential operation in response to said coded digital signal.
Claim 6
Dependent Claim
20 words
The display system of cliam 4 wherein one of said light bars is adapted to display positive and negative values.
Claim 7
Dependent Claim
20 words
The display system of cliam 4 wherein one of said light bars is adapted to display positive and negative values.
Claim 8
Dependent Claim
236 words
A display system comprising a plurality of light elements arranged in at least two groups, switching means for selectively connecting any of said light elements to an energizing source, control logic circuit means connected to said switching means to selectively actuate said switching means for energizing predetermined ones of said light elements in response to digital coded signals including at least one most significant and one least significant bit, said control logic circuit means including at least two decoder logic circuits, each logic circuIt connected to the switching means controlling a corresponding group of like elements, responsive when enabled to said least significant bit to actuate said switch means for selectively energizing the light elements within the corresponding group, and said control logic circuit means further including a major logic circuit means, connected to each of said decoder logic circuits, responsive to the most significant bit of said coded signal to selectively enable said decoder logic circuits, said major control logic circuit means also providing a control signal to each of said decoder logic circuits for overriding the output states of said decoder logic circuits established by the least significant bit and energizing a series of groups of elements in response to the most significant bit, whereby the visual representation of sai display is the composite of said series of energized groups and a plurality of energized light elements of a group brought within said series.
Claim 9
Dependent Claim
236 words
A display system comprising a plurality of light elements arranged in at least two groups, switching means for selectively connecting any of said light elements to an energizing source, control logic circuit means connected to said switching means to selectively actuate said switching means for energizing predetermined ones of said light elements in response to digital coded signals including at least one most significant and one least significant bit, said control logic circuit means including at least two decoder logic circuits, each logic circuIt connected to the switching means controlling a corresponding group of like elements, responsive when enabled to said least significant bit to actuate said switch means for selectively energizing the light elements within the corresponding group, and said control logic circuit means further including a major logic circuit means, connected to each of said decoder logic circuits, responsive to the most significant bit of said coded signal to selectively enable said decoder logic circuits, said major control logic circuit means also providing a control signal to each of said decoder logic circuits for overriding the output states of said decoder logic circuits established by the least significant bit and energizing a series of groups of elements in response to the most significant bit, whereby the visual representation of sai display is the composite of said series of energized groups and a plurality of energized light elements of a group brought within said series.
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) | 1976-11-05 | 1977-05-07 | 1977-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-05 | 1981-05-07 | 1981-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-05 | 1985-05-07 | 1985-11-06 | $7700.00 | Window Closed / Lapsed |