Patent ID: 8213801

Claim:
A data transmission system, comprising: a light emitting device, which comprises: a light emitting unit, wherein the light emitting unit comprises M light emitting elements; and a control circuit for controlling the light emitting unit to sequentially display a plurality of pattern images in a plurality of frame times to form a spatiotemporal pattern image according to setting data corresponding to a temporal domain and a spatial domain; and a light receiving device, which comprises: an image capture unit for capturing the spatiotemporal pattern image; a recognition unit for recognizing the spatiotemporal pattern image to output recognized data; a repair unit for executing a parity check to repair the recognized data, wherein the repair unit repairs the recognized data according to the number of times of ignition and the parity check; and a decoding unit for decoding the recognized data to output decoded data, wherein if the number of the light emitting elements, which break down, is greater than 2, the to-be-repaired spatiotemporal pattern image is divided into several spatiotemporal pattern image blocks having the same size, and the repair unit performs the parity check on each spatiotemporal pattern image block to repair the block.