| CPC H04N 25/771 (2023.01) [H04N 25/75 (2023.01); H04N 25/778 (2023.01)] | 24 Claims |
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1. An image sensor comprising an arrangement of pixels, each of the pixels including an acquisition circuit, the acquisition circuit including:
a sensor circuit configured to generate a sensor signal depending on a light signal illuminating a photosensor of the pixel;
a storage circuit configured to store during a storage interval a stored signal proportional to the sensor signal; and
a comparator circuit configured to generate, after the storage interval, a comparator signal depending on the sensor signal and the stored signal,
wherein the storage circuit includes at least one amplifier, and the comparator circuit includes the same at least one amplifier,
wherein the sensor signal is connected to an input of the at least one amplifier and wherein another input of the at least one amplifier is connected via a capacitor to ground, substrate, or other common potential,
wherein the at least one amplifier and the capacitor belong to the storage circuit during the storage interval and belong to the compactor circuit after the storage interval,
wherein the acquisition circuit further comprises a signal line for refreshing the stored signal during the storage interval, and
wherein an output of the at least one amplifier is connected via a switch to the capacitor, wherein the switch is controlled by the signal line.
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