SOLID-STATE IMAGE SENSOR, IMAGING DEVICE, AND METHOD OF CONTROLLING SOLID-STATE IMAGE SENSOR

In a solid-state image sensor that transfers electric charges to a floating diffusion layer, exposure is started before transferring the electric charges to the floating diffusion layer. Electric charges are generated by photoelectric conversion in a photodiode and they are accumulated in an accumulation unit. An exposure end transfer transistor transfers the electric charges from the photodiode to the accumulation unit when a predetermined exposure period ends. A reset transistor initializes a voltage of a floating diffusion layer to a predetermined reset level when the exposure period ends. When a new exposure period is started after the electric charges are transferred to the accumulation unit, a discharge transistor discharges electric charges newly generated in the photodiode. When processing of converting a predetermined reset level into a digital signal ends, a conversion end transistor transfers the electric charges from the accumulation unit to the floating diffusion layer.