Amendment 1 - Recording - Helical-scan digital video cassette recording system using 6,35 mm magnetic tape for consumer use (525-60, 625-50, 1125-60 and 1250-50 systems) - Part 1: General specifications
修改件1.记录.消费者用6.35mm磁带的螺旋扫描数字盒式录像系统(525-60、625-50、1125-60和1250-50系统).第1部分:一般规范