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US 11,895,411 B2Granted
Imaging device with extended event signal detection timing
AssigneeSony Semiconductor Solutions Corporation
InventorsAtsumi Niwa, Yusuke Oike
Life of this patent
Estimating the term…
Abstract
It is an object to extend event signal detection periods. An imaging device according to the present technology includes a solid-state imaging device including a plurality of pixels each including a light-receiving portion that photoelectrically converts incident light to generate an electrical signal and a detection circuit that executes event signal detection by comparing the amount of change in the electrical signal generated by the light-receiving portion with a predetermined threshold value to obtain a detection result, and a control unit that performs control so that different pixels have different timing for an event detection period to cause the detection circuit to execute the event signal detection.
Claims11
An imaging device, comprising:
- a solid-state imaging device including:
- a plurality of pixels each including a light-receiving portion that photoelectrically converts incident light to generate an electrical signal, and
- a detection circuit configured to:
- execute event signal detection by comparing an amount of change in the electrical signal generated by the light-receiving portion with a specific threshold value to obtain a detection result;
- and
- execute, as the event signal detection, on event signal detection by comparing the amount of change in the electrical signal generated by the light-receiving portion with a first threshold value to obtain the detection result, and off event signal detection by comparing the amount of change in the electrical signal generated by the light-receiving portion with a second threshold value to obtain the detection result;
- and
- a control unit configured to execute control so that different pixel groups have different timing for an event detection period to cause the detection circuit to execute the event signal detection, wherein
- the control is executed on the detection circuit of each pixel in a detection cycle including an on event detection period to cause the on event signal detection to be executed, an off event detection period to cause the off event signal detection to be executed, a reset period, and an event read period, and
- the control is executed so that when the detection circuit in each pixel of a first pixel group is in the on event detection period, the detection circuit in each pixel of a second pixel group is in the off event detection period.
7 more elements
An imaging control method, comprising:
- for a solid-state imaging device including a plurality of pixels each including a light-receiving portion that photoelectrically converts incident light to generate an electrical signal and a detection circuit that executes event signal detection by comparing an amount of change in the electrical signal generated by the light-receiving portion with a specific threshold value to obtain a detection result,
- executing, by an imaging device, as the event signal detection, on event signal detection by comparing the amount of change in the electrical signal generated by the light-receiving portion with a first threshold value to obtain the detection result, and off event signal detection by comparing the amount of change in the electrical signal generated by the light-receiving portion with a second threshold value to obtain the detection result;
- executing, by the imaging device, control so that different pixel groups have different timing for an event detection period to cause the detection circuit to execute the event signal detection;
- executing, by the imaging device, control on the detection circuit of each pixel in a detection cycle including an on event detection period to cause the on event signal detection to be executed, an off event detection period to cause the off event signal detection to be executed, a reset period, and an event read period;
- and
- executing, by the imaging device, control so that when the detection circuit in each pixel of a first pixel group is in the on event detection period, the detection circuit in each pixel of a second pixel group is in the off event detection period.
3 more elements
A non-transitory computer-readable medium having stored thereon, computer-executable instructions which, when executed by a computer, cause the computer to execute operations, the operations comprising:
- for a solid-state imaging device including a plurality of pixels each including a light-receiving portion that photoelectrically converts incident light to generate an electrical signal and a detection circuit that executes event signal detection by comparing an amount of change in the electrical signal generated by the light-receiving portion with a specific threshold value to obtain a detection result,
- executing, as the event signal detection, on event signal detection by comparing the amount of change in the electrical signal generated by the light-receiving portion with a first threshold value to obtain the detection result, and off event signal detection by comparing the amount of change in the electrical signal generated by the light-receiving portion with a second threshold value to obtain the detection result;
- executing control so that different pixel groups have different timing for an event detection period to cause the detection circuit to execute the event signal detection;
- executing control on the detection circuit of each pixel in a detection cycle including an on event detection period to cause the on event signal detection to be executed, an off event detection period to cause the off event signal detection to be executed, a reset period, and an event read period;
- and
- executing control so that when the detection circuit in each pixel of a first pixel group is in the on event detection period, the detection circuit in each pixel of a second pixel group is in the off event detection period.
3 more elements
Dependencies are inferred from the claim text.