Digital TV

Digital TV, from a TV manufacturer\´s standpoint, could simply imply replacement of the conventional analog video signal processing system in a color TV receiver by digital signal processing. This concept could also be extended to the low level audio and deflection systems portion of the TV set. Digital TV could also imply the addition of "digital" features such as Picture-in- Picture (PIP), Multi Picture-in-Picture (MPIP), Freeze Frame, Zoom, etc. and picture performance improvements such as Progressive Scan, motion-compensated Noise Reduction and Frame Combing, etc. These latter schemes need storage of a field and/or frame of video information. This paper gives an overview of the above concepts and addresses them from several viewpoints, including implementation, cost, manufacturing advantages, picture quality etc.