US 6,549,197 B1 · Technique for stabilizing picture output in video display apparatus

Abstract

In accordance with a technique for stabilizing the picture output in a video display apparatus, the resolution of the video mode supplied from a PC, for example, is converted into a resolution of a pre-set video mode, thereby making it possible to output stabilized picture. The method for stabilizing a picture output in a video display apparatus includes the following steps. A power-on is recognized, and then a first power control signal is outputted. A counting is carried out for N seconds by an internal counter after outputting the first power control signal, and then a second power control signal is outputted. Then, counting is carried out for N/4 seconds by an internal counter after the outputting of the second power control signal, and control data and a clock signal are then outputted. In this manner, the format converter module and the circuit blocks are sequentially drive. Thus, the microcomputer drives the format converter module, and the format converter module converts externally input RGB signals to a resolution of a pre-set video mode so as to display stable full pictures.

Claims20

Dependent claims

An apparatus for stabilizing a picture output in a video display apparatus, comprising:

a microcomputer for sequentially outputting a first power control signal, a second power control signal, control data and a clock signal;
a first power supply section driven by the first power control signal of said microcomputer for generating power supplied to respective blocks of said video display apparatus;
and
a second power supply section driven by the second power control signal of said microcomputer for generating power supplied to a format converter module;
said format converter module being driven by said second power supply section to convert resolutions of RGB signals based on a pre-set video mode upon receipt of the control data from said microcomputer, said microcomputer driving said format converter module, and said converter module converting externally generated RGB signals to a resolution of the pre-set video mode so as to cause the video display apparatus to display stable full pictures.

2 more elements

An apparatus for stabilizing a picture output in a video display apparatus, comprising:

microcomputer means for sequentially outputting a first power control signal, a second power control signal, control data and a clock signal;
first power supply means driven by the first power control signal from said microcomputer means for generating power supplied to respective blocks of said video display apparatus;
second power supply means driven by the second power control signal from said microcomputer means for generating power;
and
format converter means driven by the power from said second power supply means for converting resolutions of RGB signals based on a pre-set video mode in response to the control data from said microcomputer means, and for converting externally generated RGB signals to a resolution of the pre-set video mode so as to cause the video display apparatus to display stable full pictures.

2 more elements

Dependencies are inferred from the claim text.

Technique for stabilizing picture output in video display apparatus

Life of this patent

Technique for stabilizing picture output in video display apparatus

Life of this patent

Abstract

Claims20