Patent ID: 7305698

Claim:
A communication system, including a transmitting apparatus and a receiving apparatus, for achieving interactivity using a broadcast wave, the transmitting apparatus comprising: storing means for storing a background image that is main image data to be displayed by the receiving apparatus and position information that indicates a position within the background image; and transmitting means for reading the background image and the position information, and for multiplexing and repeatedly transmitting the read background image and the read position information, the receiving apparatus comprising: supplementary design storing means for storing supplementary designs; separating means for separating the background image and the position information from the repeatedly transmitted multiplexed background image and position information; supplementary design reading means for reading a supplementary design from the supplementary design storing means; combining means for combining the separated background image and the read supplementary design at a position in the background image indicated by the separated position information to generate image data; and reproducing means for reproducing the generated image data and outputting an image signal.