| 摘要 |
A device for implementing interactive television services is disclosed. A television sender broadcasts television programs during which products, for example sold by a mail order house, are presented. Images of the products are represented on the screen of a receiving television set. Product code signals, that contain for example the exact product designation, their order number and the telephone number at which the product may be ordered, are mixed into the product images. The product code signals are transmitted in the vertical blanking interval of the television signal. To place an order, the product code signals are separated from the television signal by means of a data decoder and are transmitted through an infrared transmission path to the remote control of the receiving television set. This forms a unit with an integrated telephone, so that an order may be placed in a largely automatic manner. |
