Patent ID: 6628342
Filing Date: 2003-09-30
Classification: H04N

Abstract:
A video signal processing apparatus which adjusts a hue of an image displayed on a display device when a video signal outputted from a video signal reception means is displayed on the display device, comprising:address value output means which outputs an address value for adjusting the hue; addition means for generating a second address value corresponding to a phase value which has a predetermined phase difference from a phase value corresponding to a first address value by adding a predetermined value to the first address value outputted from the address value output means; selection means for selecting either the first address value which is outputted from the address value output means or the second address value which is outputted from the addition means; switching signal output means for outputting a switching signal for performing the selection in the selection means to the selection means; storage means which previously stores data corresponding to the address value for adjusting the hue as well as decides the predetermined value, receives as an input the address value outputted from the selection means, and, when the inputted address value is the first address value, outputs the first data corresponding to the first address value, and when the inputted address value is the second address value, outputs the second data corresponding to the second address value; first latch means for preserving the first data, corresponding to the switching signal outputted by the switching signal output means; second latch means for preserving the second data, corresponding to the switching signal outputted by the switching signal output means; and hue adjustment means which adjusts the hue of the video signal received in the video signal reception means to output to the display device by using the outputs of the first latch means and the second latch means.