System for echo cancellation comprising an improved ghost cancel

System for efficiently coding a moving-picture signal, capable o

System for electronically controllably viewing on a television u

System for encoding and decoding video signals

System for encoding broadcast quality television signals to enab

System for encoding or decoding analog video signals

System for encoding or decoding analog video signals

System for engraving a plurality of gravure rolls

System for enhancing audio and/or visual presentation

System for enhancing audio and/or visual presentation

System for establishing signal level for transmission of a CATV

System for expanding the video contrast of an image

System for extracting information from an identity card

System for filling outlines by addition and subtraction accordin

System for focusing a television camera objective lens

System for formatting digital signals to be transmitted

System for forming picture, alphanumeric and micrographic images

System for generating 2H pulses in a television receiver

System for generating a rasterized graphic image

System for generating and displaying a compatible high definitio