BACKGROUND

Field

The present invention relates to a photoelectric conversion device and an imaging system.

Description of the Related Art

In a stacked photoelectric conversion device in which a pixel substrate provided with a pixel array and a signal processing substrate provided with a signal processing circuit are stacked, the signal processing circuit provided on the signal processing substrate may be divided into a plurality of regions. For example, a vertical scanning circuit may be disposed in a portion overlapping with the vicinity of the center of the pixel array for improvement in performance and convenience in manufacturing. In such a case, the column circuit unit and the data processing unit are divided into two in the horizontal direction and arranged on the signal processing substrate. Japanese Patent Application Laid-Open No. 2015-216334 discloses a solid-state imaging device in which a signal processing circuit is divided into two and arranged on a logic substrate.

When the column circuit corresponding to each column of the pixel array is divided in the horizontal direction, horizontal scanning is performed for each divided area to output data. When the data divided in the horizontal direction are combined, for example, as described in Japanese Patent Application Laid-Open No. 2015-216334, it is conceivable to collect the data in the data processing unit of one of the signal processing circuits.

However, when the signal processing circuit is configured in this manner, the other divided signal processing unit is not used. Further, when plural kinds of data independent from each other are read out from the pixel array and processed by the data processing unit, it is necessary to mount a circuit for processing plural kinds of data in one of the signal processing circuits, which increases the circuit scale.

SUMMARY

An object of the present disclosure is to provide a photoelectric conversion device and an imaging system capable of efficiently outputting pixel data without increasing the circuit scale.

According to an aspect of the present disclosure, there is provided a photoelectric conversion device including a pixel unit in which a plurality of pixels each including a photoelectric converter is arranged to form a plurality of rows and a plurality of columns, and a processing circuit configured to process a signal output from the pixel unit, wherein the pixel unit includes a first region and a second region defined by columns, and is configured to output a plurality of kinds of signals including a first signal and a second signal from each of columns belonging to the first region and the second region, wherein the processing circuit includes a first processing circuit including a first memory and a third memory, a second processing circuit including a second memory and a fourth memory, and a data exchange circuit, wherein the first memory is configured to store the first signal and the second signal output from each column of the first region, wherein the second memory is configured to store the first signal and the second signal output from each column of the second region, wherein the data exchange circuit is configured to read out the first signal stored in the first memory and the first signal stored in the second memory to store them in the third memory, and read out the second signal stored in the first memory and the second signal stored in the second memory to store them in the fourth memory, and wherein the processing circuit is configured to output the first signals of the first region and the second region stored in the third memory from the first processing circuit, and to output the second signals of the first region and the second region stored in the fourth memory from the second processing circuit.

Further features of the present invention will become apparent from the following description of exemplary embodiments with reference to the attached drawings.

