| 摘要 |
<p>For novel media services such as the transmission of Electronic Program Guides (EPG), the use of teletext as a transmission medium is considered. It is efficient to refrain from the transmission, in the EPG signal, of those program data which are already present in regular teletext pages. The invention provides a method and device for assigning classification codes (program type, parental rating) to these programs. The classification is transmitted in the form of triplets in extension packets, for example packet X/26. The packets may form part of the regular teletext pages but also of the EPG data signal. In the latter case, a page linking mechanism is also provided.</p> |
