Magnetic recording device uses frequency modulation circuit for providing modified FM luminance signal which is filtered via bandpass filter before frequency conversion to provide FM luminance signal

摘要

The recording device has a frequency modulation circuit for providing a modified FM luminance signal with a higher carrier wave frequency, supplied via a bandpass filter for removing signal components above the cut-off frequency of the modified FM signal, to a frequency converter, which uses a local oscillator for restoration of the FM luminance signal for recording on the magnetic tape.