Patent ID: 6522364
Filing Date: 2003-02-18
Classification: H04N

Abstract:
A clock frequency generator for a television receiver capable of converting a signal format from that of an interlace scanning signal comprising 525 scanning lines into that comprising 1125 scanning lines, comprising:a multiplier for multiplying by a factor of 4740 a horizontal synchronizing signal for the interlace scanning signal comprising 525 scanning lines; a frequency divider for dividing by a factor of 2212 the frequency of the signal obtained in the multiplier, in order to obtain a horizontal synchronizing signal for the interlace scanning signal comprising 1125 scanning lines; and a clock generator for generating a clock which is used for generating the horizontal and the vertical synchronizing signals for the interlace scanning signal comprising 1125 scanning lines from the horizontal synchronizing signal for the interlace scanning signal comprising 525 scanning lines in the multiplier.