Patent ID: 6262771
Filing Date: 2001-07-17
Classification: H04N

Abstract:
A method of converting a picture signal including a luminance signal and a color signal, wherein a first predetermined number of sample points of the luminance signal are located on every actual scanning line, and a second predetermined number of sample points of the color signal are located on every actual scanning line, and wherein the second predetermined number is equal to the first predetermined number multiplied by ""1/n"", where ""n"" denotes a predetermined integer equal to or greater than 2, the method comprising the steps of:setting virtual scanning lines which correspond to respective pairs each having two successive actual scanning lines; andmoving sample points of the color signal from each pair of two successive actual scanning lines to a corresponding virtual scanning line while rearranging the sample points on the corresponding virtual scanning line to convert the picture signal;wherein a total number of sample points of the color signal per virtual scanning line is equal to the first predetermined number multiplied by ""2/n"", and a portion of the color signal whose sample points are located on a virtual scanning line corresponds to a portion of the luminance signal which relates to the corresponding pair of two successive actual scanning lines.