HITACHI's Field Synchronization and Entity Seed Interference Detector

摘要

In the present invention, only a part of a conventional field synchronous detection apparatus constructed in parallel is constructed in parallel by using the fact that the polarity of the second column having the length of 63 is reversed, and field synchronism is searched by selecting a smaller one of them using a comparator The present invention relates to a field synchronizing and NTSC interference detection apparatus for an HDTV that reduces the amount of hardware and increases the processing speed, An odd number and an even number signal are generated by calculating an absolute value, and an absolute value detected by each of the odd number and even number signals is calculated in a predetermined cycle to obtain a small number of odd number and even number signals. There has been provided a field synchronizing and NTSC interference detecting apparatus capable of processing high-speed video data .;In addition, a field synchronizing and NTSC interference detecting device for easily detecting an NTSC interfering signal detecting device by detecting an NTSC interfering signal using a field sync detected by a field synchronizing detecting device as a reference signal,