Widescreen Signaling (WSS) Widescreen Signaling (WSS) Application Note August 1998 AN9716.1 Author: Keith Jack Introduction [1] 625-Line PAL and SECAM Systems To facilitate the handling of various aspect ratios of program DATA TIMING material received by TVs, a widescreen signalling (WSS) The first part of line 23 is used to transmit the WSS system has been developed.……