Method for motion estimation and bandwidth reduction in memory and device for performing the same
US7424056B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 4, 2003 |
| Grant date | Sep 9, 2008 |
| Priority date | — |
| Expiry date | Aug 12, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/533
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A device and a method are disclosed for motion estimation and bandwidth reduction in a memory. The device includes a memory for storing a plurality of frame data, a controller connected to the memory, a first motion estimation processor for performing a coarse-tuning operation and a second motion estimation processor for performing a fine-tuning operation. Similarity between a reference frame and a current frame is calculated based on the averages of every two adjacent pixels in the reference macroblocks and current macroblocks. The amount of calculations for determining motion estimation is greatly reduced, and bandwidth in utilizing the memory is accordingly reduced as motion estimation is advantageously achieved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.