Title :
New ghost reduction tuner using a training method
Author :
Miki, Yutaka ; Kobo, Kazuo ; Uyeda, Kazuya ; Shimbo, Hiroyasu ; Sasaki, Mikio
Author_Institution :
Matsushita Electr. Ind. Co. Ltd., Osaka, Japan
fDate :
8/1/1990 12:00:00 AM
Abstract :
A new ghost reduction tuner, based on the GCR (ghost cancel reference) signal, has been developed. A GCR signal is inserted into the vertical blanking intervals of an NTSC television signal. At the receiver a digital ghost canceler uses the GCR signal to reduce ghost interference due to complex echoes including multiple and long-delay ghosts. A training method was adopted in the signal processing. By comparison with the conventional time-domain iterative calculations, the system stability is far superior. The ghost can be canceled in 2 s
Keywords :
interference suppression; television equipment; television interference; tuning; video signals; GCR signal; NTSC television signal; digital ghost canceler; echoes; ghost cancel reference; ghost interference reduction; ghost reduction tuner; long-delay ghosts; multiple ghosts; signal processing; system stability; training method; vertical blanking intervals; Blanking; Industrial training; Interference cancellation; Interference elimination; Iterative methods; Signal processing; TV interference; Transversal filters; Tuned circuits; Tuners;
Journal_Title :
Consumer Electronics, IEEE Transactions on
