Patent ID: 11917318
Assignee: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. An imaging device comprising a pixel comprising a first circuit and a second circuit,
wherein the first circuit comprises a first node, a second node, and a first switch,
wherein the first node has a function of retaining first image data generated in a first frame period,
wherein the first node has a function of retaining second image data generated in an n-th frame (n is a natural number of 2 or more) period,
wherein the second node has a function of retaining difference data that is a difference between the first image data and the second image data,
wherein the first switch has a function of controlling output of the first image data and the second image data,
wherein the second circuit comprises a comparison circuit and an output circuit,
wherein the comparison circuit has a function of determining whether the difference data is within a voltage range set arbitrarily, and
wherein the output circuit has a function of outputting a voltage for turning off the first switch when the difference data is within the voltage range and outputting a voltage for turning on the first switch when the difference data is outside the voltage range.