| 摘要 |
The invention concerns a method for assessing the quality of a television image. In diversity reception installations comprising several receivers, it is necessary to establish a criterion for selecting the receiver with the best image quality. For this purpose, the five vertical connection impulses are first detected in the video signal. The detection of the five equalization impulses is carried out only after the vertical connection impulses have been detected. Then, the detection of the horizontal synchronisation impulses, the interfering impulses and the echo impulses is carried out only after the equalization impulses have been detected. The number of horizontal synchronisation impulses, interfering impulses and echo impulses detected is used as criterion for selecting the best receiver. The invention is applicable to diversity reception installations comprising several television receivers, in particular for mobile installations.
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