Multi-purpose scaler
US7941001B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 5, 2005 |
| Grant date | May 10, 2011 |
| Priority date | — |
| Expiry date | Jan 13, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T3/053
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A multi-purpose scaler utilizes a vertical scaler module and a moveable horizontal scaler module to resample a video signal either vertically or horizontally according to a selected scaling ratio. The moveable horizontal scaler module resides in one of two slots within the multi-purpose scaler architecture to provide either horizontal reduction or horizontal expansion as desired. The multi-purpose scaler is arranged to scale the video using non-linear 3 zone scaling in both the vertical and horizontal direction when selected. The multi-purpose scaler is arranged to provide vertical keystone correction and vertical height distortion correction when the video is presented through a projector at a non-zero tilt angle. The multi-purpose scaler is also arranged to provide interlacing and de-interlacing of the video frames as necessary.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.