| 摘要 |
PROBLEM TO BE SOLVED: To solve problems of a conventional luminance signal/chrominance signal separation device that a chrominance signal outputted from a three-line chrominance separation circuit produces much cross color and the resolution of an outputted luminance signal is deteriorated in the case of receiving the luminance signal with correlation in the diagonal direction. SOLUTION: The luminance signal/chrominance signal separation device is provided with: a detector for detecting diagonal components of a luminance signal from a composite video signal; wide-band pass filters 103, 104, 105; narrow-band pass filters 124, 125, 126, wherein the band pass filters to be connected to a three-line chrominance separation circuit 123 are selected according to the amount of diagonal components of the luminance signal, thereby reducing cross color and improving resolution. COPYRIGHT: (C)2003,JPO
|
