| 摘要 |
An interface module and method is disclosed for receiving the digital image data output of an analog/digital converter and transmitting the digital image data output to the JPEG compression device when the image data is determined to be compressed. The interface module comprises a read control device, an output control device and a memory device. The read control device reads a predetermined number of image lines from the data output of the analog/digital converter and stores these image data in a memory device. The memory device can save the same number of image lines as the memory device built in the JPEG compression device. After reading the predetermined number of image lines, the read control device will generate a control signal to the output control device for sequentially reading an image block from the memory device and sending each of the image block to the JPEG compression device. Since the image block is of the same size of the compression unit required by the JPEG compression device, therefore the image block can be directly transmitted to the JPEG compression device for data compression without having to access an extra memory device.
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