Patent · US Expired

Circuit for controlling luminance signal amplitude

US6762800B1 · kind B1 · utility

8Cited by

9References

17Claims

0Family size

Assignee

Micronas GmbH · DE

Inventors

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

Key dates

Filing date	Jun 11, 2001
Grant date	Jul 13, 2004
Priority date	—
Expiry date	Jun 11, 2021

Classification

Technology area (CPC H)Electricity
CPC primaryH04N5/45
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

The circuit takes into account whether the image on a screen is too bright, whether more than one specific number of pixels have a luminance value that is greater than a given peak value and whether this condition is met in more than one specific number of lines in a picture and in more than one specific number of successive images with one such number of lines.

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