DIGITAL SYSTEM AND METHOD FOR DETERMINING AND DISPLAYING A TELEVISION CHANNEL NUMBER

摘要

This disclosure depicts apparatus and method for digitally determining and displaying the channel number to which a television receiver is tuned. This involves converting the tuner's local oscillator signal to a scaled local oscillator signal whose frequency is lower than the frequency of the local oscillator signal, counting the number of cycles of the scaled local oscillator signal which occur during a predetermined clock interval, generating in response to said count output pulses related in number to the channel number of the received television signal, and converting said output pulses to a displayed channel number which corresponds to the channel number of the received television signal.