Adaptive response time acceleration
AssigneeFairchild Semiconductor Corporation
InventorRobert A. Card
Life of this patent
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Abstract
This document discusses among other things, methods and apparatus to conserve energy when providing proximity information. An example apparatus can include an energy emitter configured to emit a first pulse of energy, an energy sensor configured to receive reflected energy from the first pulse of energy, a control circuit including a processor, the processor configured to provide first proximity information of the apparatus with respect to an object using the reflected energy. The control circuit can be configured to control the energy emitter, to compare the first proximity information with second proximity information, and to modulate a delay between the first pulse of energy and a subsequent pulse of energy using the comparison.
Claims18
An apparatus comprising:
- a light source configured to emit a first pulse of light;
- a sensor configured to receive reflected light from the first pulse of light;
- a control circuit including a processor, the processor configured to provide first proximity information of the apparatus with respect to an object using the reflected light;
- and
- wherein the control circuit is configured to control the light source, to compare the first proximity information with second proximity information, and to modulate a delay between the first pulse of light and a subsequent pulse of light using the comparison;
- and
- wherein the control circuit is configured to increase the delay when the comparison indicates that the proximity of the apparatus to the object has not changed by a threshold distance.
A method comprising:
- emitting a first pulse of light from a light source;
- receiving reflected light from the first pulse of light;
- providing first proximity information of the apparatus with respect to an object using the reflected light;
- comparing the first proximity information with second proximity information;
- and
- modulating a delay between the first pulse of light and a subsequent pulse of light using the comparison, wherein the modulating includes increasing the delay when the comparison indicates that the proximity of the apparatus to the object has not changed by more than a first threshold distance.
Dependencies are inferred from the claim text.