Motion vector processing circuit
US6348930B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 5, 1999 |
| Grant date | Feb 19, 2002 |
| Priority date | — |
| Expiry date | Oct 5, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/70
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A motion vector difference detection stage 10 detects a difference D1 in motion vector between a current frame and a succeeding frame and a difference D2 in motion vector between a preceding frame and current frame. A latched circuit 50 outputs the motion vector S1 of the inputted current frame as a motion vector S2 in the case where both of the absolute values of the differences D1 and D2 does not exceed a preset value L1, and outputs the motion vector S1 of the frame preceding the corresponding frame as a motion vector S2 in the case where at least one of the absolute values of the differences D1 and D2 exceeds the preset value L1. The latched circuit 50 outputs a motion vector of 0 as a motion vector S2 in the case where both of the absolute values of the differences D1 and D2 exceed the preset value L1 and also the absolute value of the sum of the differences D1 and D2 exceeds the preset value L1. When a change in motion vector is small, the motion vector of the corresponding frame carries out dynamic image correction. When a change in motion vector is large, the small motion vector of the preceding frame or the motion vector of 0 carries out dynamic image correction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.