Canon Patent for RGWB 12 image sensor array

canon patentCanon patent for an RGWB image sensor.

  • Patent publication number 2016-208093
    • Release date 2016.12.8
    • Application date 2015.4.15
  • Canon patent
    • RGBW 12 array
    • Generate resolution data and color data, synthesize resolution data and color data, upconvert, process with mosaic processing (Bayer conversion), demosaic order

An excerpt from the patent literature after the break.

[via Egami]

[Claim(s)] [Claim 1] The 1st to which each carries out two or more owners of the pixel which has a photoelectric conversion part and a second pixel group, and a signal processing section are included,
It is an imaging device which outputs data to an image processing part which generates an image from data of predetermined arrangement,
Wavelength band regions of light which carries out photoelectric conversion of each photoelectric conversion part which said first pixel group has, and each photoelectric conversion part which said second pixel group has mutually differ,
The aforementioned signal processing section,
Resolving data is generated using a signal which a pixel which said first pixel group has outputs, color information is generated using a signal which a pixel which said second pixel group has outputs, the aforementioned resolving data and the aforementioned color information are synthesized, and first data is generated,
Up convert processing of said first data is carried out, and second data is generated,
An imaging device carrying out mosaic processing of said second data so that it may become data of the aforementioned predetermined arrangement.
[Claim 2] Each which is the aforementioned pixel which said first pixel group has, and each which is the aforementioned pixels which said second pixel group has have a light transmission section,
A wavelength band region of light which a light transmission section which said first pixel group has transmits includes a wavelength band region of a range from blue to red,
The imaging device according to claim 1 the characteristics and, wherein [ to carry out ] a wavelength band region of light which a light transmission section which said second pixel group has transmits is narrower than a wavelength band region of light which a light transmission section which said first pixel group has transmits.
[Claim 3] Said first data,
The imaging device according to claim 1 or 2 being data characterized by comprising the following.
A signal generated when a photoelectric conversion part which said first pixel group has carries out photoelectric conversion of the light of a wavelength band region in which a photoelectric conversion part which said second pixel group has carries out photoelectric conversion.
A signal generated when a photoelectric conversion part which said second pixel group has carries out photoelectric conversion of the light of a wavelength band region in which a photoelectric conversion part which said first pixel group has carries out photoelectric conversion.

[Claim 4] The aforementioned imaging device has an image sensor which has a vertical scanning circuit to which a signal is made to output from said 1st [ the ] and a second pixel group by scanning said 1st [ the ], a second pixel group and said 1st [ the ], and a second pixel group,
When the aforementioned vertical scanning circuit performs a scan of said 1st [ the ] and a second pixel group once, a signal of one frame is outputted from the aforementioned image sensor,
The aforementioned image sensor outputs a signal of a plurality of frames, when the aforementioned vertical scanning circuit performs a scan of multiple times, said 1st [ the ], and a second pixel group,
Color average data is generated because the aforementioned signal processing section carries out average processing of the color information contained in each of a signal of said plurality of frames for every pixel,
An imaging device of a description to any one of the Claims 1-3 using as the aforementioned color average data the aforementioned color information used for generation of said first data.
[Claim 5] The imaging device according to claim 4, wherein the aforementioned signal processing section does not perform the aforementioned average processing to a signal which said first pixel group outputs but performs the aforementioned average processing to a signal which said second pixel group outputs.
[Claim 6] Resolving average data is generated because the aforementioned signal processing section carries out average processing of the resolving data contained in each of a signal of a plurality of frames for every pixel,
let the aforementioned resolving data used for generation of said first data be the aforementioned resolving average data — the imaging device according to claim 4, wherein a frame number used for generation of the aforementioned resolving average data is less than a frame number used for generation of the aforementioned color average data.
[Claim 7] The 1st to which each carries out two or more owners of the pixel which has a photoelectric conversion part and a second pixel group, and a signal processing section are included,
It is an imaging device which outputs data to an image processing part which generates an image from data of predetermined arrangement,
Wavelength band regions of light which carries out photoelectric conversion of each photoelectric conversion part which said first pixel group has, and each photoelectric conversion part which said second pixel group has mutually differ,
A number which is a pixel which said first pixel group has is a number exceeding the twice of a number which is a pixel which said second pixel group has,
Each pixel which said 1st [ the ] and a second pixel group have has a light transmission section,
A wavelength band region of light which a light transmission section which said first pixel group has transmits includes a wavelength band region of a range from blue to red,
A wavelength band region of light which a light transmission section which said second pixel group has transmits is narrower than a wavelength band region of light which a light transmission section which said first pixel group has transmits,
The aforementioned signal processing section,
Resolving data is generated using a signal which a pixel which said first pixel group has outputs, and color information is generated using a signal which a pixel which said second pixel group has outputs,
A signal which generates it using the aforementioned resolving data and the aforementioned color information when a photoelectric conversion part of said first pixel group carries out photoelectric conversion of the light of a wavelength band region in which a photoelectric conversion part of said second pixel group carries out photoelectric conversion, First data including a signal which generates it when a photoelectric conversion part of said second pixel group carries out photoelectric conversion of the light of a wavelength band region in which a photoelectric conversion part of said first pixel group carries out photoelectric conversion is generated,
The aforementioned signal processing section generates second data by carrying out up convert processing of said first data,
An imaging device carrying out mosaic processing of said second data so that it may become data of the aforementioned predetermined arrangement.
[Claim 8] It is an imaging device containing the 1st to which each carries out two or more owners of the pixel which has a photoelectric conversion part and a second pixel group, and a signal processing section,
Wavelength band regions of light which carries out photoelectric conversion of each photoelectric conversion part which said first pixel group has, and each photoelectric conversion part which said second pixel group has mutually differ,
The aforementioned signal processing section,
Resolving data is generated using a signal which a pixel which said first pixel group has outputs, color information is generated using a signal which a pixel which said second pixel group has outputs, the aforementioned resolving data and the aforementioned color information are synthesized, and first data is generated,
Up convert processing of said first data is carried out, and second data is generated,
An imaging device carrying out mosaic processing of said second data.
[Claim 9] An imaging system comprising:
An imaging device of a description to any one of the Claims 1-7.
The aforementioned image processing part.

[Claim 10] It is a signal processing method which processes a signal which an image sensor outputs,
The aforementioned image sensor contains the 1st to which each carries out two or more owners of the pixel which has a photoelectric conversion part, and a second pixel group,
Wavelength band regions of light which carries out photoelectric conversion of each photoelectric conversion part which said first pixel group has, and each photoelectric conversion part which said second pixel group has mutually differ,
The aforementioned signal processing method,
Resolving data is generated using a signal which a pixel which said first pixel group has outputs, color information is generated using a signal which a pixel which said second pixel group has outputs, the aforementioned resolving data and the aforementioned color information are synthesized, and first data is generated,
Up convert processing of said first data is carried out, and second data is generated,
A signal processing method carrying out mosaic processing of said second data.