Patent ID: 11924562
Assignee: OMNIVISION SENSOR SOLUTION (SHANGHAI) CO., LTD
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. An image sensor, comprising:
a pixel collection circuit array comprising a plurality of pixel collection circuits, each pixel collection circuit being configured to monitor a change in a light intensity in a field of view and enter a triggered state when the change in the light intensity meets a predetermined condition;
a global control unit coupled to the pixel collection circuit array, and configured to reset the pixel collection circuit array when the image sensor is powered on, and control the pixel collection circuit array to operate when the pixel collection circuit array is maintained in a stable initial state;
a photo current detection unit coupled to the pixel collection circuit array, and configured to determine whether there is the change in the light intensity in the pixel collection circuit array, and control an operating state of at least one pixel collection circuit in accordance with the detected change in the light intensity; and
a reading unit configured to respond to the pixel collection circuit in the triggered state and output corresponding address information,
wherein the photo current detection unit comprises at least one photo current detection module, wherein each photo current detection module is coupled to the pixel collection circuits in at least one row, and configured to detect whether there is the change in the light intensity at a region in a field of view corresponding to the coupled pixel collection circuits, control the pixel collection circuits in the row to be in the operating state when there is the change in the light intensity, and control the pixel collection circuits in the row to be in an off state when there is no change in the light intensity, and
the pixel collection circuit array is coupled to the photo current detection unit via a pixel collection circuit enabling signal line and a photo current detection signal line, coupled to the global control unit via a global resetting signal line, and coupled to the reading unit via a row request line, a row selection line, a column request line and a column selection line.