Method for reducing empty sides of a wide screen and an apparatus thereof

摘要: An apparatus for reducing empty sides of a wide screen decreases no-signal area on the left and right by differing time compression ratio video signal when an NTSC having aspect 4:3 is displayed 16:9. A controller sets frequency read clock signals supplied to line memory which are varied with respect each sub-section within effective horizontal scanning section compress in central section. By compressing signal, portion displays time-compressed picture while portions broader not subjected compression.