| 摘要 |
<p>PROBLEM TO BE SOLVED: To enable a user to freely retrieve race Betting information by using an information display device providing race information by allowing a center device to superpose character data of a race Betting information teletext program on an on-the-spot program signal, modulate the on-the-spot information program into a carrier signal of carrier frequency, and send it out. SOLUTION: The center device 1 generates an on-the-spot information program by cameras 11a to 11n, etc., and a race Betting information teletext program needed for visitors to bet for a race, etc., superposes character data of the race Betting information teletext program on the on-the-spot information program signal, and modulates the on-the-spot information program into the carrier signal of carrier frequency, which is sent out. A display terminal device 5 selects and receives the carrier signal from a broadcast communication line 4 and a demodulation part 52 demodulates the signal separately into a video signal and teletext data, and the teletext data are decoded by a teletext decoder and cyclically stored in a receive data memory 54. A retrieval part 55 retrieves and outputs corresponding teletext data from the receive data memory 54 according to retrieving operation data from an operation part 58.</p> |
