Color pixel and range pixel combination unit
The present disclosure is directed to an image sensor including a pixel array of both range pixels and color pixels. Each range pixel (or range pixel area) may be associated with multiple adjacent color pixels, with each side of the range pixel immediately adjacent to at least two color pixels. The association between the range pixels and the color pixels may be dynamically configurable. The readings of a range pixel(s) and the associated color pixels may be integrated together in the generation of a 3D image.
1. A device, comprising:
an image sensor that includes:
a range pixel area including four sides of a same size; and
a plurality of color pixels adjacent to the range pixel area, each of the four sides having a separate set of color pixels each immediately adjacent to the side, each of the separate set of color pixels having a same number of at least four color pixels, none of the separate set of color pixels overlapping with another separate set of color pixels of the four sides.
2. The image sensor of claim 1 , wherein a combination of color filters of the plurality of color pixels adjacent to two adjacent sides of the range pixel area are the same.
3. The image sensor of claim 1 , wherein the range pixel area and the plurality of color pixels adjacent to the range pixel area are associated to one another to form a combination pixel unit.
4. The image sensor of claim 3 , wherein the plurality of adjacent color pixels includes forty eight color pixels arranged into twelve color pixel matrix patterns surrounding the range pixel area.
5. The image sensor of claim 4 , wherein the surrounding color pixel matrix patterns and the range pixel area together cover an 8×8 pixel surface area.
6. The image sensor of claim 3 , wherein the plurality of adjacent color pixels includes one hundred and twenty eight color pixels arranged into thirty two color pixel matrix patterns surrounding the range pixel area.
7. The image sensor of claim 6 , wherein the surrounding color pixel matrix patterns and the range pixel area together cover a 12×12 pixel surface area.
8. The image sensor of claim 3 , wherein the plurality of color pixels are arranged in matrix patterns each including four color pixels of at least three different color filters.
9. The image sensor of claim 1 , wherein the range pixel area includes a surface area about four times in size of a surface area of one of the color pixels of the plurality of color pixels.
10. The image sensor of claim 1 , further comprising a reading circuit having one or more readout elements, and the range pixel area and the plurality of color pixels being electrically coupled to a same one of the one or more readout elements of the reading circuit.
11. The image sensor of claim 1 , further comprising a controller electrically coupled to a readout element of the image sensor and configured to control association of the range pixel area and one or more the plurality of color pixels.
12. The image sensor of claim 1 wherein a plurality of additional range pixel areas are positioned in a pattern that every two immediately adjacent additional range pixel areas are spaced with a uniform number of color pixels in between.
13. The image sensor of claim 1 , wherein the range pixel area includes a single range pixel.
14. The image sensor of claim 13 , wherein the single range pixel includes a width that is substantially at least four times of a width of one of the color pixels of the plurality of color pixels.
15. A pixel array of an image sensor, comprising:
a first range pixel having four sides of a same first size; and
a first plurality of color pixels arranged in at least two rings around the first range pixel, a first ring among the at least two rings being immediately adjacent to the first range pixel and including four separate sets of color pixels, each of the four separate sets of color pixels having a same number of at least four color pixels immediately adjacent to a separate one of the four sides of the first range pixel, none of the four separate sets of color pixels overlapping with another separate set of color pixels of the four separate sets of color pixels.
16. The pixel array of claim 15 , wherein the first plurality of color pixels includes 128 color pixels arranged in a pattern of four rings around the first range pixel.
17. The pixel array of claim 15 , further comprising a readout circuit element, and wherein the first plurality of color pixels includes 48 color pixels that are electrically coupled to the readout circuit element.
18. The pixel array of claim 15 , further comprising:
a second range pixel of substantially a same second size; and
a second plurality of color pixels arranged in at least two rings around the second range pixel, the first range pixel and the first plurality of color pixels form a first combination pixel unit and the second range pixel and the second plurality of color pixels form a second combination pixel unit that is adjacent to the first combination pixel unit.
19. A method, comprising:
reading a range pixel of a pixel array including the range pixel having four sides of a same size and a plurality of color pixels adjacent to the range pixel and associated with the range pixel, each of the four sides having a separate set of color pixels having a same number of at least four of the plurality of color pixels immediately adjacent to the side, none of the separate set of color pixels overlapping with another separate set of color pixels of the four sides;
reading the plurality of color pixels; and
generating a three-dimensional image by integrating the reading of the range pixel with the reading of all of the associated plurality of color pixels.
20. The method of claim 19 , wherein the pixel array includes a first range pixel associated with a first number of adjacent color pixels and a second range pixel associated with a second different number of adjacent color pixels.