A Method of Reading Images from Image Digitizer with High Speed

The image digtizer is widely used in many fields of astronomical observations, because it can acquire and process the astronomical images got from the video CCD.However the more important problem is how to read the images from the digitizer quickly.A new method of reading images in a short time is suggested in this article.The detailed methods of desigh the programes in M540 and CA 6300 image digitizers are presented, and the acquistion speed of two methods is compared.