Signal reproducing circuit for a video tape recorder

A signal reproducing circuit in a video tape recorder comprising in an FM luminance signal circuit,

• an up-converter for up-converting a reproduced signal;
• a surface acoustic wave filter connected to an output of said up-converter, and said surface acoustic wave filter having a parallel circuit of a first filter for mainly peaking a high frequency component and a second filter for mainly peaking a low frequency component;
• a limiter connected to an output of said first filter of said surface acoustic wave filter;
• an amplifier connected to an output of said second filter of said acoustic surface wave filter;
• and
• an adder for adding an output of said limiter and an output of said amplifier.

A signal reproducing circuit in a video tape recorder comprising, in an FM luminance signal circuit,

• an up-converter for up-converting a reproduced signal;
• a surface acoustic wave filter for equalizing the up-converted signal;
• and
• an FM signal drop-out compensation circuit including a wide-band 1H (one horizontal scan period) glass delay line for compensating a drop-out of the reproduced signal.

A signal reproducing circuit in a video tape recorder comprising, in an FM luminance signal circuit,

• an up-converter in an FM luminance signal circuit for up-converting a reproduced signal;
• a surface acoustic wave filter for equalizing an up-converted signal;
• an FM signal drop-out compensation circuit including a wide-band 1H (one horizontal scan period) glass delay line for compensating a dropout of the reproduced signal;
• a pair of demodulators for separately demodulating the signal prior to the passage of said 1H-delay line and the signal after the passage of said 1H-delay line;
• and
• a line correlation circuit and a video dropout compensation circuit using outputs of said pair of demodulators.