Mapping uniform resource locators to broadcast addresses in...

Details Mapping uniform resource locators to broadcast addresses in... Mapping uniform resource locators to broadcast addresses in...

H - Electricity

04

L

H04L 12/18 (2006.01) H04L 29/02 (2006.01) H04L 29/06 (2006.01) H04N 7/16 (2006.01) H04N 7/24 (2006.01)

Patent

CA 2223095

Web pages and other Internet information resources are retrieved from a one-way broadcast signal such as a broadcast television signal. A user selects from a range of available information, including hypertext markup language (HTML) pages, which is carried in the broadcast stream by invoking a command which is defined according to a uniform resource locator (URL) format. Table mapping data is carried in the broadcast signal and provides a broadcast address corresponding to the URL of the user request signal for use in identifying a location in the broadcast signal from which the desired information can be retrieved. The broadcast address may provide information regarding a frequency, packet identifier, satellite, transponder, cryptographic scheme, modulation scheme, data rate, error correction scheme, page number or other relevant criteria associated with the broadcast signal which must be known to retrieve the requested information. The system has the look and feel of a two-way Internet connection, and is compatible with existing transmission schemes.

Utilisation d'un signal de radiodiffusion unidirectionnel de type signal de radiodiffusion télévisuel pour l'extraction de pages Web et d'autres sources d'informations sur Internet. L'utilisateur fait son choix dans un ensemble d'informations disponibles, y compris des pages en langage HTML (Hypertext Markup Language), transmises par le flux de diffusion, au moyen d'une commande utilisant le format URL (Localisateur de ressources uniformes). Ce signal de radiodiffusion transmet notamment des données de mappage fournissant une adresse de diffusion correspondant à l'URL du signal de demande dont l'utilisateur fait usage pour reconnaître un emplacement du signal de radiodiffusion d'où il sera possible d'extraire les informations voulues. Cette adresse de diffusion peut fournir des informations sur la fréquence, l'identificateur de paquet, le satellite, le répéteur, la technique cryptographique utilisée, le schéma de modulation, le débit binaire, le code correcteur d'erreur, le numéro de page ainsi que d'autres données pertinentes associées au signal de radiodiffusion et dont il est nécessaire de disposer pour pouvoir extraire les informations demandées. Ce système présente l'aspect d'une connexion Internet bidirectionnelle et s'utilise de la même façon tout en étant compatible avec les modes de transmission existants.

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