IMAGE SIGNAL CONVERSION SYSTEM AND METHOD, RECORDING MEDIUM, AND TELEVISION RECEIVER

PROBLEM TO BE SOLVED: To provide an image signal conversion method by which occurrence of a difference from line numbers between fields of a converted HD signal can be suppressed. SOLUTION: Whether or not an SD signal received by the image conversion system of this invention is a standard signal in...

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Bibliographische Detailangaben
Hauptverfasser: SOMEYA IKUO, KOMODA MASAHIRO
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:PROBLEM TO BE SOLVED: To provide an image signal conversion method by which occurrence of a difference from line numbers between fields of a converted HD signal can be suppressed. SOLUTION: Whether or not an SD signal received by the image conversion system of this invention is a standard signal in compliance with the NTSC standards is discriminated on the basis of a discrimination signal received from a three-dimensional YC separation device in a step S1. In the case that the received SD signal is discriminated to be the standard signal, a standard system is decided for the synchronization system in a step S2. On the contrary, in the case that the received SD signal is discriminated to be no standard signal in the step S1, a non-standard system is decided for the synchronization system in a step S3.