Patent ID: 6876395
Filing Date: 2005-04-05
Classification: H04N

Abstract:
1. A video signal conversion device for converting an input video signal to a video signal suitable for a display device that carries out matrix display, comprising: a storage that stores said input video signal as data; a vertical frequency conversion processor that outputs a write control signal for writing said input video signal in said storage and a read control signal for reading the video signal stored in said storage to control input/output of the video signal in/from said storage while converting the vertical frequency of the video signal by use of data stored in said storage; an interlace-to-progressive conversion processor that converts, when the video signal output from said vertical frequency conversion processor is an interlace signal, the video signal from the interlace signal to a progressive signal and outputs the progressive signal; a scanning line conversion processor that converts the number of scanning lines of the video signal output from said interlace-to-progressive conversion processor; a horizontal pixel conversion processor that converts the number of horizontal pixels of the video signal output from said scanning line conversion processor; and a synchronous controller that outputs a synchronous control signal to said vertical frequency conversion processor, said interlace-to-progressive conversion processor, said scanning line conversion processor, and said horizontal pixel conversion processor said synchronous control signal controlling operations of said vertical frequency conversion processor, said interlace-to-progressive conversion processor, said scanning line conversion processor, and said horizontal pixel conversion processor, wherein said input video signal is stored once in said storage to carry out vertical frequency conversion, interlace-to-progressive conversion, scanning line number conversion and horizontal pixel number conversion by use of the data stored in said storage.