Electrical device
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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N/A
Issued Date -
Mar 28, 2002
app pub date -
Sep 14, 2001
filing date -
Mar 30, 1998
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A device for displaying indicia, comprising: a display 57 comprising a plurality of activatable elements, wherein each element has an activated state in which the element is visible and a deactivated state in which the element is not visible and one or more of the elements are activatable to display indicia; and control means 910 for controlling the display 57 which includes test means 960 which is configured to activate successively groups of elements according to a predetermined control sequence such that the activated and deactivated state of each of the elements is tested, wherein the control means 910 is configured to activate the elements in groups of one or two and the successive activation of elements comprises, for each group, the steps of activating all of the elements in the group, activating one element in the group, not activating one element in the group and not activating all of the elements in the group.
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