Patent ID: 7372481
Filing Date: 2008-05-13
Classification: H04N

Abstract:
1. A vector waveform correction device for correcting a vector waveform displayed on a vector scope, comprising: means for inputting a first color difference signal (B-Y signal) and a second color difference signal (R-Y signal) demodulated from a chrominance signal of a composite video signal as x and y, and partially rotating a vector (x, y)=(first color difference signal, second color difference signal) in a unit of part of all the scanning lines; wherein said means for rotating the vector (x,y) partially rotates said vector (x, y)=(first color difference signal, second color difference signal) in a unit of part of all the scanning lines, and rotates it in a unit of all the scanning lines; and rotation amount setting means for holding a rotation amount α for all the scanning lines, wherein said means for rotating the vector (x,y) is affine transformation means for generating a vector (x′,y′)=(x·cos(θ+α)−y·sin(θ+α), x·sin(θ+α)+y·cos(θ+α)) from said vector (x,y).