NHK presents Super Hi-Vision 8K TV sensor capable to shoot at 120fps speed. NHK has partnered with Shizuoka University to develop the new fast readout circuits. The sensor is being presented at ISSCC these days.
Update: Tech-On gives more details about the NHK sensor. The sensor is built in 0.18um process and has 2.8um pixels.
In order to achieve high speed at low power the cyclic column-parallel 12b ADC uses a two-tiered architecture. The first ADC resolves 4b, and the next stage delivers the rest 8b. The power of the ADC is 800mW.