Imaging device and imaging system

An imaging device comprising:

• a plurality of pixels arranged to form a plurality of pixel rows and a plurality of pixel columns, wherein each of the plurality of pixels includes a photoelectric converter;
• and
• a control unit that controls an accumulation period for accumulation of charge in the plurality of pixels,
• wherein the plurality of pixels is divided into a plurality of pixel blocks that are parts different from each other of the plurality of pixels, and each of the plurality of pixel blocks includes a pixel group arranged over at least two pixel rows or at least two pixel columns,
• wherein the control unit is configured to control the accumulation period for each of the plurality of pixel blocks,
• wherein the control unit is configured to perform a first period in which the plurality of pixels is divided into first and second groups, and a second period in which the plurality of pixels is divided into third and fourth groups different from the first and second groups,
• wherein, in the first period, a length of the accumulation period for pixels belonging to the first group is different from a length of the accumulation period for pixels belonging to the second group, and the number of the pixels belonging to the first group is larger than the number of the pixels belonging to the second group,
• wherein, in the second period, a length of the accumulation period for pixels belonging to the third group is different from a length of the accumulation period for pixels belonging to the fourth group, and the number of the pixels belonging to the third group is larger than the number of the pixels belonging to the fourth group, and
• wherein a part of the pixels belonging to the first group in the first period belongs to the fourth group in the second period.

An imaging device comprising:

• a plurality of pixels arranged to form a plurality of rows and a plurality of columns, wherein each of the plurality of pixels includes a photoelectric converter;
• an amplifier unit that amplifies a signal based on charge generated by the photoelectric converter;
• and
• a control unit that controls a gain of the amplifier unit,
• wherein the plurality of pixels is divided into a plurality of pixel blocks that are parts different from each other of the plurality of pixels, and each of the plurality of pixel blocks includes a pixel group arranged over at least two rows or at least two columns,
• wherein the control unit is configured to control the gain for each of the plurality of pixel blocks,
• wherein the plurality of pixel blocks includes a first pixel block, a second pixel block, and a third pixel block arranged between the first pixel block and the second pixel block on the same pixel block row, and
• wherein the control unit is configured to control the amplifier unit so that the gain to a signal based on charge generated by the photoelectric converter of a pixel arranged in the third pixel block is the same as one of the gain to a signal based on charge generated by the photoelectric converter of a pixel arranged in the first pixel block and the gain to a signal based on charge generated by the photoelectric converter of a pixel arranged in the second pixel block.

An imaging device comprising:

• a plurality of pixels arranged to form a plurality of pixel rows and a plurality of pixel columns, wherein each of the plurality of pixels includes a photoelectric converter;
• and
• a control unit that controls an accumulation period for accumulation of charge in the plurality of pixels,
• wherein the plurality of pixels is divided into a plurality of pixel blocks that are parts different from each other of the plurality of pixels, and each of the plurality of pixel blocks includes a pixel group arranged over at least two pixel rows or at least two pixel columns,
• wherein the control unit is configured to control the accumulation period for each of the plurality of pixel blocks,
• wherein the control unit is configured to perform a first period in which the plurality of pixels is divided into first and second groups, and a second period in which the plurality of pixels is divided into third and fourth groups different from the first and second groups,
• wherein, in the first period, a length of the accumulation period for pixels belonging to the first group is different from a length of the accumulation period for pixels belonging to the second group, and the number of the pixels belonging to the first group is larger than the number of the pixels belonging to the second group,
• wherein, in the second period, a length of the accumulation period for pixels belonging to the third group is different from a length of the accumulation period for pixels belonging to the fourth group, and the number of the pixels belonging to the third group is larger than the number of the pixels belonging to the fourth group, and
• wherein a part of the pixels belonging to the second group in the first period belongs to the third group in the second period.