公开(公告)号：US10171711B1

公开(公告)日：2019-01-01

申请号：US15872233

申请日：2018-01-16

Applicant: OmniVision Technologies, Inc.

Inventor： Min Liu ,  Yun Hak Koh ,  Charles Wu

IPC: H04N5/21 ,  H04N5/38

Abstract: A transmitter circuit coupled to output image data from an image sensor includes a plurality of transmitters. The transmitters may include a plurality of drivers coupled to receive a data signal, and output a differential signal in response to receiving the data signal. A de-emphasis circuit is coupled between a first output of a first driver in the plurality of drivers, and a second output of a second driver in the plurality of drivers. The de-emphasis circuit is coupled to receive a de-emphasis control signal, and in response to receiving the de-emphasis control signal, the de-emphasis circuit reduces a magnitude of the differential signal.

公开(公告)号：US10326955B1

公开(公告)日：2019-06-18

申请号：US15872709

申请日：2018-01-16

Applicant: OmniVision Technologies, Inc.

Inventor： Yingkan Lin ,  Charles Wu ,  Yu-Shen Yang

IPC: H04N5/378 ,  H04N5/369 ,  H04N5/3745 ,  H04N5/376

Abstract: A readout circuit for use with an image sensor includes a comparator coupled to compare a ramp signal from a ramp generator with an output signal from a pixel of a pixel array. A counter is coupled to the comparator to count until the comparator detects that a ramp signal value has reached an output signal value. The counter includes K cascade-coupled dynamic flip-flop circuits to generate the K least significant bits (LSBs) of the N-bit output of the counter. The counter also includes N-K cascade-coupled static flip-flop circuits to generate the N-K most significant bits (MSBs) of the N-bit output of the counter. A latch is coupled to the counter to store a count value generated by the counter after the ramp signal value has reached the output signal value.