What is progressive technology?
First factor to consider is that the human eye perceives 10 to 12 frames (or images) per second. The visual cortex then holds onto one image for about one-fifteenth of a second, so if another image is received during that period an illusion of continuity is created, allowing a sequence of still images to give the impression of motion. When reproducing this “video” feed to a natural motion, CCTVs have to add more images to keep fluidity. Thomas Edison studied video and said that anything below 46 frames per second would show as straining and jerky to the eye. Since many years already, most video systems offer 60 frames per second, also measured as 60 hertz.
Processing images is a heavy-duty task, and since processors where not as powerful as today’s, most analog TV and video projectors where tricking the eye to provide 60 frames per second, but using interlaced analog video format. Interlaced means although you have 60 frames per second, the system would actually show odd lines, then the even lines of each image frame; being displayed alternately. This also means you must have 2 image refreshments to have one fully changed image. Interlaced video is now replaced by progressive scan video. When you have a progressive scan image video, you have now 60 frames of full images, per second. This means clear, sharp, fluid imagery. Progressive is mainly useful in dynamic movements, reducing blurring and jerkiness. End result is less eye fatigue, better reading and true color reproduction.
HumanWare has made a huge leap to the new Progressive technology, all of our CCTVs have this new and efficient technology!