Title :
Record and playback systems for 1.2 Gb/s HDTV digital VTR
Author :
Umemoto, M. ; Eto, Y. ; Katayama, H. ; Ohwada, N.
Author_Institution :
Hitachi Ltd., Tokyo, Japan
Abstract :
Some of the essential technology of the record/playback system of a 1.2 Gb/s digital VTR are described. The VTR can record the full bandwidth of 1125/60 HDTV signals, namely, 30 MHz for luminance, and 15 MHz for each of the two color difference signals. Integrated detection and a 5-tap transversal filter appropriate to the developed head-tape systems with a cross-shaped multilayered amorphous head and metal particle tape, and a special PLL to cope with stunt motion are studied. At a high data rate of 148.5 Mb/s and a high linear density of 0.345 μm per bit, the recorder confirms reliable operation with a word error rate of less than 10-4
Keywords :
digital filters; high definition television; magnetic heads; magnetic tapes; phase-locked loops; video tape recorders; 1.2 Gbit/s; 148.5 Mbit/s; 15 MHz; 30 MHz; 5-tap transversal filter; HDTV digital VTR; HDTV signals; VTR; cross-shaped multilayered amorphous head; head-tape systems; high linear density; integrated detection; metal particle tape; record/playback system; special PLL; stunt motion; two color difference signals; word error rate;
Conference_Titel :
Video, Audio and Data Recording, 1990., Eighth International Conference on
Conference_Location :
Birmingham
