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US 5,327,155 AGranted
Device for displaying a parameter value
AssigneeSiemens Aktiengesellschaft
InventorsSven-Gunnar Olsson, Mats Iderup, Goeran Rydgren, Goeran Cewers
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Abstract
A device for displaying a parameter value has at least one row of light-emitting diodes in which each light-emitting diode has a position input, and the device has a control circuit with address outputs connected to the position inputs. Faults, such as a short-circuit can be detected more easily by an improved interconnection of the address outputs and position inputs such that two adjacent address outputs are connected to two position inputs physically separated by at least one position input.
Claims16
A device for displaying a parameter value comprising:
- a row of light-emitting diodes, each light-emitting diode having a position input;
- control means, having a plurality of address outputs respectively uniquely allocated to the light-emitting diodes in said row, for illuminating selected ones of said light-emitting diodes, to display a parameter value supplied to said control means, by supplying an electrical signal to the address outputs respectively allocated to said selected light-emitting diodes;
- and
- hard-wired interconnection means, electrically connecting said address outputs and said position inputs with no two adjacent address outputs being respectively physically connected to two position inputs for light-emitting diodes which are adjacent in said row, for causing an immediately perceptible distortion in the display of said parameter value in the presence of a faulty illumination of one of said light-emitting diodes for permitting immediate identification of a fault in the display of said parameter value.
1 more element
Dependencies are inferred from the claim text.