Method of transmitting interactive television
US8191102B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 5, 2003 |
| Grant date | May 29, 2012 |
| Priority date | — |
| Expiry date | Jul 3, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04H20/16
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method (1) of transmitting interactive television, whereby interactive television applications are transmitted inside application-modules. These modules are transmitted in a broadcast stream. Recording systems cannot decide which modules are to be recorded. Therefore storage related information of said modules is signalled in the broadcast stream. Module identification information related is implemented in the Application Information Table (AIT) and/or in the Download Information Indication (DII) message. Thus information is included in the broadcast stream concerning categories stating whether application modules are mandatory, optional or forbidden to record. Alternatively properties of a module are chosen from Code/Data/Both and/or Fixed/Variable. Recording systems use this information do decide if application modules are to be recorded or disregarded. Alternatively, application module identification information is transmitted in said broadcast stream. A module identification number is used to avoid multiple recordings. Application modules having the same category are preferably grouped together.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.