Device for combining video signals which represent images having a different perception depth
US6078362A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 3, 1998 |
| Grant date | Jun 20, 2000 |
| Priority date | — |
| Expiry date | Feb 3, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/272
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Device for combining p video signals which represent images having a different perception depth, comprising PA1 p sources which each generate a video signal in the form of a series of pixels, each accompanied by a priority signal which determines the depth of the signal and a key signal which determines a local change in depth, PA1 selection means for selecting in each case the m pixels having the m highest priorities, PA1 a mixing stage in which the selected m pixels are mixed. All the p sources are coupled to the mixing stage via a bus system provided with a pixel data bus, a key-signal bus and a priority-signal bus. Each source is provided with a priority-bus detector with which the signals are received on the priority bus and are compared with its own priority, and is provided with switching means controlled by the priority-bus detector in such a way that only the sources having the m highest priorities and the bus are connected to the mixing stage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.