Apparatus for generating a digital video picture
US6678008B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | May 17, 2000 |
| Grant date | Jan 13, 2004 |
| Priority date | — |
| Expiry date | May 17, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/4312
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An apparatus for generating a digital video picture is proposed. In this case, the video picture comprises a main picture and a secondary picture. The secondary picture serves to provide information about the status of the apparatus or else for operational guidance. The data of the picture are supplied digitally. Data for the subpicture are additionally contained in the bit stream for the main picture. The subpicture can likewise be displayed together with the main picture and provide information such as, for example, subtitles with respect to the main picture. Decoding apparatuses for the main-picture data and the subpicture data are provided. Also provided is a multiplexing device for the correctly timed outputting of the decoded data and, consequently, of the joint representation of main picture and subpicture. The apparatus has a storage device, in which data for the secondary pictures are stored in coded form. The coded data of a secondary picture are loaded into the decoding unit for the subpicture data in response to a received command. The decoding of the data for the subpicture is stopped and the decoding of the data for the secondary picture takes place instead. In a furt…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.