Patent ID: 6650375
Filing Date: 2003-11-18
Classification: H03D,H04N

Abstract:
A television signal transmitter, comprising:first and second frequency converters for outputting by frequency converting intermediate frequency band television signals to broadcasting channel television signals which are different from each other, each of the frequency converters comprising: a first mixer for frequency converting the intermediate frequency television signals to television signals of first intermediate frequency band which has higher frequency than that of the intermediate frequency band television signals; a first local oscillator for generating first local oscillation signals input to the first mixer; a second mixer for frequency converting the first intermediate frequency band television signals to the television signals of the broadcasting channel band; and a second local oscillator for generating second local oscillation signals input to the second mixer; wherein the frequency of first local oscillation signals in the first frequency converter and the frequency of first local oscillation signals in the second frequency converter are different from each from other by 0.25 MHz or more.