It's basically the same thing, except the initial charges in each cell are created through the photoelectric effect when the sensor is exposed to light. After t

It's basically the same thing, except the initial charges in each cell are created through the photoelectric effect when the sensor is exposed to light. After that, it's the same conveyor-belt-style readout proces as for the BBD. It's also why CCDs tended to have problem horizontal or vertical halos around bright lights. Nowadays, most cameras use CMOS sensors, where the amplification and readout circuitry is integrated directly into each photosensitive cell.