Patent ID: 11936996
Assignee: SONY SEMICONDUCTOR SOLUTIONS CORPORATION
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 7:
8. A solid-state imaging element comprising:
a plurality of detection pixels each of which generates a voltage signal corresponding to a logarithmic value of a photocurrent, and
a detection circuit that detects whether or not a change amount of the voltage signal of a detection pixel indicated by an input selection signal among the plurality of detection pixels exceeds a predetermined threshold value, wherein
each of the plurality of detection pixels includes:
a logarithmic response circuit that generates the voltage signal; and
a differentiator that obtains a change amount of the generated voltage signal and outputs the change amount to the detection circuit,
the detection circuit includes:
a selection circuit that selects any of the change amount of each of the plurality of detection pixels; and
a comparison circuit that compares the selected change amount with the threshold value,
the threshold value includes an upper limit threshold value and a lower limit threshold value that are different from each other,
the detection circuit includes a selection switch that selects either the upper limit threshold value or the lower limit threshold value, and
the comparison circuit compares the selected threshold value with the change amount.