Re-inserting VBI data using OSD apparatus and method
US7312831B2 · kind B2 · utility
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36References
27Claims
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Key dates
| Filing date | Sep 16, 2003 |
| Grant date | Dec 25, 2007 |
| Priority date | — |
| Expiry date | Aug 1, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/435
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of reinserting Vertical Blanking Interval (VBI) data in a digital video signal includes creating a gray scale palette in a an On Screen Display (OSD) memory; sizing a VBI area in an OSD memory; locating a VBI area in an OSD memory; generating a VBI luma waveform bitmap; and overlaying the VBI luma waveform bitmap in a DVB video bit stream according to the gray scale palette, size and location data stored in the OSD memory.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.