| CPC H04N 25/745 (2023.01) [H04N 25/47 (2023.01); H04N 25/75 (2023.01)] | 20 Claims |
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1. An image sensor using photon counting, the image sensor comprising:
a plurality of sub-pixels arranged in one pixel;
pulse generators which are respectively connected to the plurality of sub-pixels, and are configured to generate pulse signals based on electric signals generated based on photons incident on the plurality of sub-pixels;
a synchronizer and serializer configured to synchronize and serialize pulse signals respectively output from the pulse generators; and
a counter configured to count and output a number of the pulse signals that are synchronized and serialized,
wherein the pulse signals generated by the pulse generators correspond to photons incident on the plurality of sub-pixels at a same or overlapping timing, and
wherein the synchronizer and serializer is further configured to:
synchronize the pulse signals by synchronizing start timings of the pulse signals; and
serialize the pulse signals by realigning the synchronized pulse signals such that the synchronized pulse signals are output at different timings.
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