Patent · US Expired

Method for modifying the image size of video images

US6975779B1 · kind B1 · utility

3Cited by

9References

18Claims

0Family size

Assignee

Infineon Technologies AG · DE

Inventors

Maik Brett · Schweinhub, DE
Xiaoning Nie · Birkenfeld, DE
Dirk Wendel · Unterhaching, DE

Key dates

Filing date	Sep 21, 1999
Grant date	Dec 13, 2005
Priority date	—
Expiry date	Sep 21, 2019

Classification

Technology area (CPC H)Electricity
CPC primaryH04N21/4316
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

The invention relates to a method for changing the image size of video images, in which a decimation of video image signals (V) by an integral decimation factor (MHD, MVD) is carried out, and the decimated video image signals are subsequently read into an image memory for buffering.In order to achieve better possibilities of adjusting the image reduction with a relatively low outlay and high image quality, a fine decimation of the video image signals (V) is additionally carried out before buffering by a fine decimation factor (SHS, SVS) which can be adjusted to non-integral values, and a total decimation factor (MH, MV) relevant to the decimation of the video image signals (V) is formed from the integral decimation factor (MHD, MVD) and the fine decimation factor (SHS, SVS).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.