Abstract: The opticaltoelectrical conversion systems, especially the postprocessing for the acquisition signal are investigated. The process of CCD signal acquisition and processing realized by a certain DSPbased hardware during the optoelectronic data acquisition processing is introduced. The differential algorithm for edge recognition of CCD signal and the algorithm for combining the linear array CCD signals to restore the 2D image signals are given. And the detailed hardware processing circuit is provided. The data transmission between DSP and FIFO, and the interface circuit between DSP and USB are emphatically introduced. The problem of the 2D image signal restoration, which is impossible for the system to solve with ordinary technology, was solved with this technology. Finally, the validity of the method is proved by the experiments. Since the linear array CCD signal is stored in the form of several lines, the method is especially suitable for image acquisition system of laser carver.