Device and method for generating thumbnail JPEG image and medium for storing thumbnail JPEG image

摘要

Disclosed herein is a device and method for generating a thumbnail Joint Picture Experts group (JPEG) image and a medium for storing the thumbnail JPEG. The device includes a scaler, first frame memory, a JPEG signal processing unit, second frame memory and a memory control unit. The scaler scales an input image to a predetermined size to output an image for main JPEG, and scales the input image to a size smaller than the image for main JPEG and to outputs a thumbnail JPEG image. The first frame memory stores the thumbnail JPEG image. The JPEG signal processing unit performs JPEG encoding on the image for main JPEG and the thumbnail JPEG image, and outputs a main JPEG image and a thumbnail JPEG image. The second frame memory stores the main JPEG image and the thumbnail JPEG image. The memory control unit transfers the thumbnail JPEG image to the first frame memory, and transfers the main JPEG image and the thumbnail JPEG image to the second frame memory. Additionally, the JPEG signal processing unit receives the main JPEG image and the thumbnail JPEG image stored in the second frame memory, and outputs the main JPEG image and the thumbnail JPEG image as a single JPEG file.