VIDEO RECORDER

PURPOSE:To attain miniaturization and to improve picture quality by using in common a 1H base band delay line for a comb line filter at picture recording and for crosstalk elimination, noise cancellation and dropout compensation at reproduction. CONSTITUTION:A base band TV signal applied to a pictur...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: TOUNO TAKESHI, HOSOYA NOBUKAZU
Format: Patent
Sprache:eng
Schlagworte:
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Beschreibung
Zusammenfassung:PURPOSE:To attain miniaturization and to improve picture quality by using in common a 1H base band delay line for a comb line filter at picture recording and for crosstalk elimination, noise cancellation and dropout compensation at reproduction. CONSTITUTION:A base band TV signal applied to a picture recording input terminal 50 is applied to an input terminal 4 of a CCD delay line 1 via an LPF51. The delay line 1 forms the comb line filter together with non-delay lines 5, 6 and adding and subtracting circuits 7, 8 at the picture recording, an output of the circuit 7 is applied to a luminance signal processing circuit 100 and an output of the cuircuit 8 is applied to a chroma signal processing circuit 200. Reproduced outputs of a pair of heads are synthesized by a switcher 301 at reproduction and after the output is separated into a luminance signal and a chroma signal by an HPF305 and an LPF304 and processed, the result is applied to a terminal 4 of the delay line 1 via a mixing circuit 60. Then, the processing such as crosstalk elimination, noise cancellation and compensation of dropout is performed and the result is led at an output terminal 80. Then, the miniaturization and the improvement of picture quality are attained.