NTSC方式と互換性のある信号多重方式における現行受像機への妨害抑制方法 : ATV信号の両立性向上

概要

論文の詳細を見る
In a television system in which detail information is multiplexed with a carrier and transmitted over on NTSC channel, the picture-quality on existing receivers is degraded by the disturbance caused by the multiplexed component. we propose a method of "shuffling" by which the phase of the multiplexing carrier is shifted on a line and field basis in order to reduce the disturbance. The locations of the carriers with various shift patterns in three-dimensional frequency space and the characteristics of the human visual system are discussed. subjective assessment tests are carried out in order to select the best shift Pattern. As a result, the method using the most suitably shuffled carrier reduces the disturbance to less than 50% for ordinary Pictures and 38% for some particular pictures.
社団法人映像情報メディア学会の論文
1989-11-16