Object priority order compositor for MPEG-4 player
US8467443B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 1, 2005 |
| Grant date | Jun 18, 2013 |
| Priority date | — |
| Expiry date | Dec 17, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/234318
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An object priority order compositor for an MPEG-4 player having a drawing node list generator including an object priority order register, a drawing node extractor, a field-node extractor, and an object priority order manager including an object rendering sequencer and an object instruction manager. The drawing node list generator makes a list by receiving a scene tree from a parser manager and extracting drawing nodes necessary for presentation on a screen from the scene tree by a depth first search. The object priority order manager handles insert, delete, and replace commands received from scene constitution information to determine priority order of an object. The object priority order compositor performs presentation of objects based on a priority order for objects when a scene change, in which an object is inserted, deleted, or replaced in real time by user interaction, as required in an MPEG-4 scene of high capacity multimedia objects.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.