Title :
Performance of an error correction scheme for PAL-TV teletext
Author :
Moriyama, Shigeki ; Kuroda, Toru ; Yamada, Osamu
Author_Institution :
NHK Sci. & Tech. Res. Lab., Tokyo, Japan
fDate :
3/1/1992 12:00:00 AM
Abstract :
The shortened (272, 190) difference set cyclic code has been adopted for the Japanese teletext system using NTSC vertical blanking periods. This system is known as BEST (burst and random error correction system for teletext) for NTSC-TV systems. A powerful error correction system adopting the (272, 190) code for PAL-TV teletext signals is described. To compare the error correction characteristics of this system to those of WST (World System Teletext), transmission experiments were carried out multiplexing both data packets with different lines during the vertical blanking period of the same TV signals. The validity of applying BEST to the PAL-TV signals was confirmed, particularly when there is ghost interference
Keywords :
error correction codes; teletext; television broadcasting; video signals; BEST; NTSC vertical blanking periods; PAL-TV signals; TV broadcasting; WST; World System Teletext; burst and random error correction system for teletext; data packets; error correction code; ghost interference; multiplexing; shortened (272, 190) difference set cyclic code; teletext signals; teletext system; transmission experiments; Blanking; Computer errors; Decoding; Error correction; Error correction codes; Interference; Laboratories; Power system reliability; TV broadcasting; Teletext;
Journal_Title :
Broadcasting, IEEE Transactions on
