Patent ID: 6721016
Filing Date: 2004-04-13
Classification: H04N

Abstract:
A jitter detection device for detecting jitter in a video signal, said device comprising:a vertical period measuring means for measuring a vertical period for one field of the video signal and generating a vertical period signal; a jitter determination means for determining, based on the vertical period signal, whether the video signal jitters or not, and generating a jitter determination signal; a jitter determination counting means for counting, based on the jitter determination signal, the number of times it is successively determined that the video signal jitters, and generating a jitter determination counter signal; a jitter confirmation means for confirming, based on the jitter determination counter signal, that the video signal is a jitter signal if it is determined a first predetermined number of times that the video signal jitters; a non-jitter counting means for counting, based on the jitter determination signal, the number of times it is successively determined that the video signal does not jitter, and generating a non-jitter determination counter signal; a non-jitter confirmation means for confirming, based on the non-jitter determination counter signal, that the video signal is a non-jitter signal if it is determined a second predetermined number of times that the video signal does not jitter.