Illuminated vehicle warning system
First Claim
1. An illuminative device, comprising:
- a control circuit;
an acceleration detector operable with the control circuit; and
a plurality of light sources operable with the control circuit;
the control circuit to;
receive an input from the acceleration detector indicating deceleration exceeds a predetermined threshold; and
upon receipt of the input, deliver a time-varying drive signal to continuously illuminate the plurality of light sources with an illumination level varying between a first non-zero illumination level and a second non-zero illumination level as the time-varying drive signal varies between a first positive magnitude to illuminate the plurality of light sources at the first non-zero illumination level and a second positive magnitude to illuminate the plurality of light sources at the second non-zero illumination level.
1 Assignment
0 Petitions
Accused Products
Abstract
An illuminative device (100) includes a control circuit (101), an acceleration detector (102) operable with the control circuit, and a plurality of light sources (103) operable with the control circuit. The control circuit is to receive an input (108) from the acceleration detector indicating deceleration (601) exceeds a predetermined threshold (662). Upon receipt of the input, the control circuit is to deliver a time-varying control signal to continuously illuminate the plurality of light sources with an illumination level varying between a first non-zero illumination level (664) and a second non-zero illumination level (665) in accordance with a frequency of the time-varying control signal.
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Citations
20 Claims
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1. An illuminative device, comprising:
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a control circuit; an acceleration detector operable with the control circuit; and a plurality of light sources operable with the control circuit; the control circuit to; receive an input from the acceleration detector indicating deceleration exceeds a predetermined threshold; and upon receipt of the input, deliver a time-varying drive signal to continuously illuminate the plurality of light sources with an illumination level varying between a first non-zero illumination level and a second non-zero illumination level as the time-varying drive signal varies between a first positive magnitude to illuminate the plurality of light sources at the first non-zero illumination level and a second positive magnitude to illuminate the plurality of light sources at the second non-zero illumination level. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. An illuminative device, comprising:
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a housing; an acceleration detector disposed in the housing; a control circuit disposed in the housing to receive an input from the acceleration detector; and a plurality of light sources disposed on or in the housing, arranged in a triangle and operable with the control circuit; the control circuit to, when the input indicates deceleration in excess of a threshold, deliver a time-varying drive signal to illuminate the plurality of light sources at a time-varying non-zero illumination level ranging from less than thirty percent of a maximum illumination level of the plurality of light sources to more than seventy percent of the maximum illumination level at a predetermined frequency as the time-varying drive signal varies between a first positive magnitude to illuminate the plurality of light sources at a first non-zero illumination level and a second positive magnitude to illuminate the plurality of light sources at a second non-zero illumination level. - View Dependent Claims (19)
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20. A method of illuminating a plurality of light sources arranged as a warning triangle, comprising:
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detecting deceleration in excess of a threshold; and causing, with a time-varying drive signal, the plurality of light sources to emit light at time-varying non-zero illumination levels between less than thirty percent of a maximum illumination level and more than seventy percent of the maximum illumination level as the time-varying drive signal varies between a first positive magnitude to illuminate the plurality of light sources at a first non-zero illumination level and a second positive magnitude to illuminate the plurality of light sources at a second non-zero illumination level.
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Specification