Abstract: TV-IF circuit comprising a balanced video signal path (A.sub.5, M, A.sub.6, VM) arranged between an IF-input (1, 1') and a video signal output (2, 2') and a balanced sound signal path (A.sub.1, A.sub.2, A.sub.7, SM) arranged between the IF-input (1, 1') and a sound signal output (3, 3'), these two paths comprising a video mixing stage (VM) and a sound mixing stage (SM), respectively for a quasi-parallel sound signal processing or an intercarrier sound signal processing. The compatability between these two modes of sound signal processing increases the range of applications compared with prior art TV-IF circuits and this is accomplished by a matrix circuit (M) comprising a balanced, non-inverting (5, 5') and a balanced, inverting (4, 4') input, as well as a balanced output (6, 6'), the matrix circuit (M) being included via the non-inverting input (5, 5') and the output (6, 6') in one (A.sub.5, M, A.sub.6, VM) of said two signal paths (A.sub.5, M, A.sub.6, VM or A.sub.1, A.sub.2, A.sub.

Abstract: Television receiver for receiving a picture carrier whose amplitude is modulated with a video signal and a sound carrier whose frequency is modulated with an audio signal. The sound intercarrier signal produced by a mixing circuit is divided by a detected amplitude-modulated interference have, a signal of a substantially constant amplitude being thus produced. Consequently, a limiter preceding the frequency demodulator is not required.

Abstract: In a television receiver comprising a synchronous demodulator having a push-pull output behind which an emitter-coupled transistor pair is connected for suppressing whiter-than-white noise signals, a signal can be obtained from the collector circuit of one of the transistors of the transistor pair by means of smoothing which smoothed signal is suitable for many purposes such as, for example, switching-off an automatic frequency control or a tuning indication or a tuning correction.

Abstract: In a television receiver having a synchronous video signal detector from which a signal is obtained for controlling a function such as an automatic volume control or a synchronization signal separation, a correction signal, obtained by means of full-wave rectification from a frequency deviation detector, is added to the signal to improve the operation of said function of the receiver in the case of more serious detuning.