Patent ID: 6118486
Filing Date: 2000-09-12
Classification: G06T,G09G,H04N

Abstract:
Apparatus for processing an input video signal having one of a plurality of display formats to produce an output video signal suitable for use by a display device, said display device utilizing a fixed frequency horizontal deflection signal and a vertical deflection signal, said apparatus comprising:a format converter, for selectively adapting at least a horizontal display format of said input video signal to a horizontal display format defined by aid fixed frequency horizontal deflection signal;a frame rate converter, coupled to said format converter, for selectively adapting a frame rate of said input video signal to a frame rate of said display device;a raster generator, for generating, in response to a raster clock signal, said fixed frequency horizontal deflection signal and said vertical deflection signal, said vertical deflection signal having a frequency defined by a vertical display format of said output video signal; anda clock circuit, responsive to a program clock reference (PCR) associated with said input video signal, for producing a system clock signal and said raster clock signal, said raster clock signal being generated by frequency scaling said system clock signal.