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Photoelectric conversion device and method of driving photoelectric conversion device

專利號
US11039057B2
公開日期
2021-06-15
申請人
CANON KABUSHIKI KAISHA（JP Tokyo）
發(fā)明人
Kei Ochiai
IPC分類
H04N5/232
技術領域
readout,pixel,row,pixels,signal,in,th,circuit,control,conversion
地域： Tokyo

摘要

A photoelectric conversion device includes a pixel region where pixels are arranged to form rows and columns, and a pixel control circuit that supplies control signals to the pixels. The pixel region includes first to fourth regions, a first pixel in the first region and a second pixel in the second region are arranged on different columns on a first row, a third pixel in the third region and a fourth pixel in the fourth region are arranged on different rows on a first column, and the first row on which the first and second pixels are arranged is arranged between rows on which the third and fourth pixels are arranged. The pixel control circuit simultaneously reads out pixel signals of the first and second pixels in a first period and simultaneously reads out pixel signals of the third and fourth pixels in a second period.

說明書

Since the readout operation in the photoelectric conversion device according to the present embodiment is the same as that in the timing diagram of the third embodiment illustrated in FIG. 8, the description thereof will be omitted here.

Also in the present embodiment, the noise amounts superimposed on image data of the reference part 101 and image data of the comparison part 102 can be matched, and the noise amounts superimposed on image data of the reference part 103 and image data of the comparison part 104 can be matched in the same manner as the third embodiment. Further, in the photoelectric conversion device according to the present embodiment, since image data of the reference part 103 and image data of the comparison part 104 are read out by the single readout circuit 30, influence of noise superimposed on a ramp signal or a count signal can be further suppressed compared to the third embodiment.

Therefore, according to the photoelectric conversion device of the present embodiment, accurate correlation operation can be performed on both the horizontal direction and the vertical direction, and the accuracy of focusing in autofocusing can be improved.

As described above, according to the present embodiment, influence of pattern noise superimposed on a pair of image data can be suppressed, and the accuracy of focusing in autofocusing can be improved.

Fifth Embodiment

權利要求

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