Patent ID: 11924569
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 10:
11. An image sensor for sampling a pixel signal in units of columns, the image sensor comprising:
a pixel array comprising a plurality of pixels and configured to output a pixel voltage measured in each of the plurality of pixels during a readout time to each of column lines connected to each pixel;
a plurality of analog comparators, each connected to a respective column line of the column lines and configured to receive the pixel voltage from pixels connected to the column line and compare a signal level of the pixel voltage with a signal level of a ramp signal;
a plurality of counters configured to output counting data based on a comparison result of the analog comparators; and
a plurality of digital comparing circuits, each configured to compare a binary value of a reference code corresponding to the ramp signal with a binary value of the counting data for a respective counter, to output a digital signal corresponding to the counting data to a data output circuit, based on a first result of the comparison between the binary value of the counting data and the binary value of the reference code, and to output a digital signal generated based on a previous ramp signal with respect to the ramp signal to a data output circuit, based on a second result of the comparison between the binary value of the counting data and the binary value of the reference code.