HDR image sensor with LFM and reduced Motion Blur

A method of using an apparatus for light emitting diode (LED) flicker mitigation in image sensors, the method comprising:

• using a timing controller circuit that generates at least one control signal that controls an operation of the image sensors;
• using at least one pixel, in which the at least one pixel comprises a split photodiode pixel including at least two or more photodiodes that are configured to be exposed to one or more bursts of light from a light source, the at least two or more photodiodes are configured to be exposed and blanked independently of each other;
• wherein the two or more photodiodes include a first photodiode that has a first exposure period that is longer in duration than a second exposure period of a second photodiode of the two or more photodiodes;
• and
• wherein the timing controller circuit is configured to control a plurality of exposures performed by the second photodiode of the at least one pixel to include a fragmented medium exposure, a continuous medium exposure, a fragmented short exposure, and a continuous short exposure, wherein the fragmented medium exposure and the continuous medium exposure are longer than a net exposure time of the fragmented short exposure and the continuous short exposure, respectively, and the first exposure period of the first photodiode is a continuous long exposure that is longer in duration than any of a plurality of exposure periods of the second photodiode.

A method for light emitting diode (LED) flicker mitigation in image sensors, comprising:

• generating, by a timing controller circuit, at least one control signal that controls an operation of the image sensors, the image sensors including at least one pixel having a split photodiode pixel including at least two or more photodiodes that are configured by the control signal from the timing controller circuit to be exposed to one or more bursts of light from a light source, the at least two or more photodiodes are configured to be exposed and blanked independently of each other;
• controlling, by the timing controller circuit, a first exposure period of a first photodiode of the two or more photodiodes to be longer in duration than a second exposure period of a second photodiode of the two or more photodiodes;
• performing by the second photodiode, a fragmented exposure operation in which a plurality of exposure periods of the second photodiode are shorter in duration than the first exposure period of the first photodiode, and the plurality of exposure periods of the second photodiode include both continuous and fragmented exposure periods to capture the one or more bursts of light;
• and
• outputting by the split photodiode (split-PD) pixel to at least one of a memory or the timing controller circuit;
• wherein the plurality of exposure periods of the second photodiode of the at least one pixel in the image sensors include a fragmented medium exposure, a continuous medium exposure, a fragmented short exposure, and a continuous short exposure, wherein the fragmented medium exposure and the continuous medium exposure are longer in duration than a net exposure time of the fragmented short exposure and the continuous short exposure, respectively, and the first exposure period of the first photodiode is a continuous long exposure that is longer in duration than any of the plurality of exposure periods of the second photodiode.