Solid-state imaging device, signal processing method thereof, and electronic apparatus
AssigneeSony Corporation
InventorShizunori Matsumoto
Life of this patent
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Abstract
A solid-state imaging device includes a pixel array section that includes a light-blocked pixel portion, and an effective pixel portion, and a signal process circuit that processes a pixel signal output from each pixel of the pixel array section. The signal processing circuit calculates, as held data, a row statistic obtained by performing a statistical process on pixel signals of the light-blocked pixel portion in the unit of rows, holds the held data items of a plurality of rows including a process target row of the pixel array section, randomly selects one of the held data items of a plurality of rows, and subtracts the randomly selected held data item from a pixel signal of the pixel of the process target row in the effective pixel portion.
Claims20
A solid-state imaging device comprising:
- a pixel array section that includes a light-blocked pixel portion in which a plurality of pixels are arranged in a two-dimensional array form and a photoelectric conversion element included in each pixel is blocked from light, and an effective pixel portion which is not blocked from light;
- and
- a signal process circuit that processes a pixel signal output from each pixel of the pixel array section,
- wherein the signal processing circuit
- calculates, as held data, a row statistic obtained by performing a statistical process on pixel signals of the light-blocked pixel portion in the unit of rows;
- holds the held data items of a plurality of rows including a process target row of the pixel array section;
- randomly selects one of the held data items of a plurality of rows;
- and
- subtracts the randomly selected held data item from a pixel signal of the pixel of the process target row in the effective pixel portion.
A signal processing method of a solid-state imaging device provided with a pixel array section that includes a light-blocked pixel portion in which a plurality of pixels are arranged in a two-dimensional array form and a photoelectric conversion element included in each pixel is blocked from light, and an effective pixel portion which is not blocked from light;
- and a signal process circuit that processes a pixel signal output from each pixel of the pixel array section, the signal processing method comprising:
- causing the signal processing circuit to
- calculate, as held data, a row statistic obtained by performing a statistical process on pixel signals of the light-blocked pixel portion in the unit of rows;
- hold the held data items of a plurality of rows including a process target row of the pixel array section;
- randomly select one of the held data items of a plurality of rows;
- and
- subtract the randomly selected held data item from a pixel signal of the pixel of the process target row in the effective pixel portion.
An electronic apparatus comprising:
- a solid-state imaging device including
- a pixel array section that includes a light-blocked pixel portion in which a plurality of pixels are arranged in a two-dimensional array form and a photoelectric conversion element included in each pixel is blocked from light, and an effective pixel portion which is not blocked from light;
- and
- a signal process circuit that processes a pixel signal output from each pixel of the pixel array section,
- wherein the signal processing circuit
- calculates, as held data, a row statistic obtained by performing a statistical process on pixel signals of the light-blocked pixel portion in the unit of rows;
- holds the held data items of a plurality of rows including a process target row of the pixel array section;
- randomly selects one of the held data items of a plurality of rows;
- and
- subtracts the randomly selected held data item from a pixel signal of the pixel of the process target row in the effective pixel portion.
A solid-state imaging device comprising:
- a pixel array section that includes a light-blocked pixel portion in which a plurality of pixels are arranged in a two-dimensional array form and a photoelectric conversion element included in each pixel is blocked from light, and an effective pixel portion which is not blocked from light;
- and
- a signal process circuit that processes a pixel signal output from each pixel of the pixel array section,
- wherein the signal processing circuit
- calculates, as held data, a column statistic obtained by performing a statistical process on pixel signals of the light-blocked pixel portion in the unit of columns;
- holds the held data items of a plurality of columns including a process target column of the pixel array section;
- randomly selects one of the held data items of a plurality of columns;
- and
- subtracts the randomly selected held data item from a pixel signal of the pixel of the process target column in the effective pixel portion.
A signal processing method of a solid-state imaging device provided with a pixel array section that includes a light-blocked pixel portion in which a plurality of pixels are arranged in a two-dimensional array form and a photoelectric conversion element included in each pixel is blocked from light, and an effective pixel portion which is not blocked from light;
- and a signal process circuit that processes a pixel signal output from each pixel of the pixel array section, the signal processing method comprising:
- causing the signal processing circuit to
- calculate, as held data, a column statistic obtained by performing a statistical process on pixel signals of the light-blocked pixel portion in the unit of columns;
- hold the held data items of a plurality of columns including a process target column of the pixel array section;
- randomly select one of the held data items of a plurality of columns;
- and
- subtract the randomly selected held data item from a pixel signal of the pixel of the process target column in the effective pixel portion.
An electronic apparatus comprising:
- a solid-state imaging device including
- a pixel array section that includes a light-blocked pixel portion in which a plurality of pixels are arranged in a two-dimensional array form and a photoelectric conversion element included in each pixel is blocked from light, and an effective pixel portion which is not blocked from light;
- and
- a signal process circuit that processes a pixel signal output from each pixel of the pixel array section,
- wherein the signal processing circuit
- calculates, as held data, a column statistic obtained by performing a statistical process on pixel signals of the light-blocked pixel portion in the unit of columns;
- holds the held data items of a plurality of columns including a process target column of the pixel array section;
- randomly selects one of the held data items of a plurality of columns;
- and
- subtracts the randomly selected held data item from a pixel signal of the pixel of the process target column in the effective pixel portion.
Dependencies are inferred from the claim text.