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US 10,705,604 B2Granted
Eye tracking apparatus and light source control method thereof
AssigneeHTC Corporation
InventorsBo-Wen Xiao, Fu-Cheng Fan
Life of this patent
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Abstract
An eye tracking apparatus and a light source control method thereof are provided. The eye tracking apparatus includes a plurality of light sources, an image capturer and a controller. The light sources project a plurality of light beams to a target zone. The image capturer captures a display image on the target zone. The controller turn-off light beams corresponding to a part of light sources according to a contrast ratio of the display image.
Claims13
A eye tracking apparatus, comprising:
- a plurality of light sources, configured to project a plurality of light beams to a target zone;
- an image capturer, configured to capture a display image generated on the target zone;
- a controller, coupled to the image capturer and the plurality of light sources, turning off the plurality of light beams generated corresponding to a part of the light sources according to a contrast ratio of the display image;
- and
- a lookup table, coupled to the controller, recording a corresponding relationship between a plurality turning on/turning off states and a plurality of field of view information.
2 more elements
A light source control method, adapted to an eye tracking apparatus, comprising:
- enabling a plurality of light sources to project a plurality of light beams to a target zone;
- capturing a display image generated on the target zone;
- and
- turning off the light beams generated corresponding to a part of the plurality of light sources according to a contrast ratio of the display image,
- the light source control method further comprising:
- recording a corresponding relationship between a turning on/turning off states and the plurality of field of view information to a lookup table.
3 more elements
Dependencies are inferred from the claim text.