TV has display with new 14:9 ratio and non linear image distortion characteristics to allow compatibility with older 4: 3 ratio format

摘要

A TV has a display (2) area (3) with sides in the ratio 14:9 and matches different ratio signals (B) to this by vertical or horizontal distortion from horizontal units (5a, b) with either separate non linear characteristics for compression (5a) and expansion (5b) and a single vertical non linear characteristic (6) or the converse.