Forward and inverse quantization of data for video compression
US8731051B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 23, 2007 |
| Grant date | May 20, 2014 |
| Priority date | — |
| Expiry date | Nov 3, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/61
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A video processor is described, which is useful for implementing a quantization process, in compliance with the H.264 standard. The video processor includes an input, for receiving a block of image data. The image data is loaded into an internal register. In response to receiving a SIMD instruction, a quantizer, which incorporates the quantization lookup tables associated with the H.264 standard in its associated hardware, makes necessary high-level quantization decisions. In response to receiving another SIMD instruction, the quantizer uses those high-level quantization decisions to retrieve specific values from the quantization lookup tables.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.