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US 12,114,063 B2Granted
Motion sensor and motion detection system using the same
AssigneePixart Imaging Inc.
InventorChih-Huan Wu
Life of this patent
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Abstract
There is provided a motion sensor including a pixel array and a processor. The motion sensor is embedded with multiple power consumption modes. In one of the multiple power consumption modes, the pixel array outputs image frames having different frame formats. The processor processes the image frames having different frame formats respectively using different algorithms so as to achieve the purposes of low power consumption and high detection sensitivity.
Claims19
A motion sensor, comprising:
- a pixel array, configured to output image frames using multiple image capture modes;
- and
- a processor, configured to perform motion detection according to the image frames,
- wherein, in a first power mode, the pixel array is configured to continuously output multiple first image frames each having a first line time, to output one second image frame having a second line time between two groups of the multiple first image frames, and the first line time is different from the second line time.
1 more element
A motion sensor, comprising:
- a pixel array, configured to output image frames with different frame formats, including a first frame format that is a differential image format and a second frame format that is a non-differential image format;
- and
- a processor, configured to perform motion detection with a first algorithm according to at least one image frame having the first frame format, and to perform another motion detection with a second algorithm according to at least one image frame having the second frame format.
A motion detection system, comprising:
- a pixel array, configured to output a first format image frame, a second format image frame and a third format image frame having frame formats different from one another;
- a processor, configured to process the first format image frame using a first algorithm to perform motion detection, process the second format image frame using a second algorithm to perform another motion detection, or output the third format image frame;
- and
- a host, configured to receive the third format image frame, wherein
- in a first power mode, the pixel array is configured to output at least one first format image frame,
- a second power mode is entered when the processor detects a motion in the first power mode, and the pixel array is configured to output at least one second format image frame in the second power mode,
- a third power mode is entered to output at least one third format image frame when the processor detects another motion in the second power mode, and
- a third consuming power of the third power mode is higher than a second consuming power of the second power mode, and the second consuming power of the second power mode is higher than a first consuming power of the first power mode,
- wherein the pixel array is configured to output successive first format image frames, and output a single second format image frame between two groups of the successive first format image frames in the first power mode.
6 more elements
Dependencies are inferred from the claim text.