Ghost Canceller Development and GCR

摘要

The problem of 'ghost' interference has existed since the very beginning of television broadcasting. Almost all television pictures suffer from 'ghosts', even though often at a low level that does not cause visual problems. Moves towards a next-generation terrestrial high-definition television system, which is called advanced television or ATV in the United States, have likewise aroused interest in Japanese ghost-related technology, particularly in the ghost cancelling reference (GCR) signal and ghost canceller technology. The paper will describe research aimed at preventing ghost interference and outline a new digital ghost canceller, GCR and related technical standards.