High Definition NTSC Broadcast Protocol

This paper describes a new process referred to as HD-NTSC™. This signal has all the appearances of a conventional NTSC signal, and can be edited, stored, transmitted, and received by conventional NTSC equipment. A receiver constructed to interpret the HD-NTSC protocol will be able to build an ID-NTSC image having substantially improved resolution in both the vertical and horizontal axes for those parts of the imnage that are nearly stationary over time. Those parts of the image exhibiting motion will show resolution equivalent to a conventional top-quality NTSC picture. The HD-NTSC receiver will also display the image at 60 frames per second, eliminating most interlace and flicker defects. An optional technique widens the image aspect ratio and creates bandwidth within the original NTSC standard large enough to transmit a digitally-encoded stereo audio signal to match the improved visual characteristics.