Programmable frequency divider for a television receiver frequency synthesizer

Abstract From the Canadian patent

Abstract of the Disclosure, A phase locked local oscillator loop of a frequency synthesizer tuning system for a television receiver includes a programmable frequency divider for deriving an output signal having a period which is N times the period of its input signal, N being the number in MHz of the local oscillator frequency required for tuning the receiver to a selected channel (e.g. N = 101 for U.S. channel 2). The "divide by" number N is controlled by first counting the input signal pulses in groups of (S) pulses where (S), is a factor equal to the channel separation in MHz (6 in the U.S.). Counting by groups of S continues until the number of such groups equals the channel number e.g. …