2K × 2K Image Acquisition System Using Four CMD Imagers

Abstract

We have developed a 2K × 2K progressive scan color camera system. In the development, two key technologies were applied. One of the technologies enables a sensor to be operated at a high data rate. In the system, four CMD (Charge Modulation Device) chips with 1920 (H) x 1035 (V) pixel are driven at 167-M pixel/sec in progressive scan mode respectively. The other technology uses the four-sensors pickup method in which two sensors are used for green and two sensors for red and blue. The spatial offset imaging method in the vertical direction was applied to the two green sensors, thus increasing the number of vertical lines in the green channel to 2070 (twice the number of one CMD). Using these technologies, an ultra high definition camera with a data rate of 334-MHz pixel/sec has been achieved and we are sure that a vertical limiting resolution has been produced of more than 1500 TVL on a color monitor.