Vertical line multiplication method for high-resolution camera and circuit therefor

摘要

A vertical line multiplication method and circuit multiplies the number of vertical lines of a video signal which is imaged by use of 4 CCDs to transform the signal into another video signal having a higher resolution by controlling writing and reading of signals to and from a memory. A first memory (110) receives G1 channel data of 0.5H period from a G1 CCD and outputs the written data at twice a speed of a writing speed. A second memory (120) receives G2 channel data of 1H period from a G2 CCD and outputs the written data at twice the speed of the writing speed. A selection device (130) selects the data from the first and second memories alternatively and outputs selected signals sequentially as a wide bandwidth G signal.