The image pickup apparatus has a camera which encodes object image data, further comprises a recording unit 101 for recording image data, a connector 200 for connecting the camera with an expansion card 111 including a signal processor 701 for processing image data stored in the recording...http://www.google.ca/patents/US5739850?utm_source=gb-gplus-sharePatent US5739850 - Apparatus for improving the image and sound processing capabilities of a camera 
