Oral Digital Imager Image Acquisition Card Design

Digital image system of Dental diagnosis is a hot point in modern medical appliance. Through following the latest technology and adopting the FFT-CCD image sensor for X-ray, we successfully designed and debugged the. X-ray display card. This article emphasizes the principle of correlated double sampling (CDS) and the application of FPGA in CCD's driving and control. It also discusses the errors and noise interfering in image gathering, so the image quality could be greatly improved. This project adopts independent operating system which can keep stability and incredibility. Furthermore, it has obvious characters such as portability, beautility and easily operating, which will be broadly used in medical field.