Method and pixel array for detecting motion information

An image sensor, comprising:

• a pixel array which includes a plurality of first image sensing pixels and a plurality of second image sensing pixels, the plurality of first image sensing pixels being used to detect a light within a visible light wavelength range, the plurality of second image sensing pixels being used to detect a light within an invisible light wavelength range, wherein a number of the plurality of first image sensing pixels is more than a number of the plurality of second image sensing pixels;
• and
• a processing unit which is used to output an image information depending on a data detected by the plurality of first image sensing pixels under a first mode, and output an object moving information depending on the data detected by the plurality of second image sensing pixels under a second mode.

An image sensor, comprising:

• a pixel array which includes a plurality of first image sensing pixels and a plurality of second image sensing pixels, wherein a number of the plurality of first image sensing pixels is more than a number of the plurality of second image sensing pixels;
• and
• a processing unit which is used to output an image information depending on a data detected by the plurality of first image sensing pixels under a first mode, and determine to switch from a second mode to the first mode depending on the data detected by the plurality of second image sensing pixels under the second mode.