Optical detection device of detecting a distance relative to a target object
AssigneePixart Imaging Inc.
InventorSai Mun Lee
Life of this patent
Estimating the term…
Abstract
An optical detection device of detecting a distance relative to a target object includes a substrate, an optical sensor and a processor. The optical sensor is disposed on the substrate and adapted to capture an image about the target object. The processor is disposed on the substrate and electrically connected with the optical sensor. The processor is adapted to mark a first region and a second region within the image for acquiring first quantity of the first region and second quantity of the second region, and compare the first quantity with the second quantity for determining whether the distance is varied to a predefined condition.
Claims18
An optical detection device of detecting a distance relative to a target object, the optical detection device comprising:
- a substrate;
- an optical sensor disposed on the substrate and adapted to capture an image about the target object;
- and
- a processor disposed on the substrate and electrically connected with the optical sensor, the processor being adapted to mark a first region and a second region within the image for acquiring first quantity of the first region and second quantity of the second region, and compare the first quantity with the second quantity for determining whether the distance is varied to a predefined condition;
- wherein sizes of the first region and the second region are variable in accordance with change of the distance.
An optical detection device of detecting a distance relative to a target object, the optical detection device comprising:
- a substrate;
- an optical sensor disposed on the substrate and adapted to capture an image about the target object;
- and
- a processor disposed on the substrate and electrically connected with the optical sensor, the processor being adapted to mark a first region and a second region within the image for acquiring first quantity of the first region and second quantity of the second region, and compare the first quantity with the second quantity for determining whether the distance is varied to a predefined condition;
- wherein the processor determines the distance is varied to the predefined condition when a ratio of the second quantity to the first quantity is greater than a predefined threshold, and further determines the distance is not varied to the predefined condition when the ratio is smaller than or equal to the predefined threshold.
Dependencies are inferred from the claim text.