CPC H05B 45/12 (2020.01) [A61B 5/02416 (2013.01); A61B 5/7225 (2013.01); A61B 5/024 (2013.01); A61B 5/145 (2013.01); A61B 5/14552 (2013.01); A61B 5/7203 (2013.01); A61B 2560/0247 (2013.01); H05B 47/11 (2020.01)] | 20 Claims |
1. An electronic device comprising:
a light source;
a light sensor; and
a controller configured to sense a coarse amount of ambient light by turning off the light source and performing sensing in a coarse mode by operating an analog-to-digital converter at a first resolution on data based on a first output from the light sensor and to sense a fine amount of the ambient light by performing sensing in a fine mode by operating the analog-to-digital converter at a second higher resolution on data based on a second output from the light sensor,
wherein the controller is configured to:
sense an amount of a target light by turning on the light source and performing sensing by using the light sensor while the light source emits a light; and
output information based on the coarse amount of the ambient light, the fine amount of the ambient light, and the amount of the target light.
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