4 ms·
Why is TV 29.97 frames per second?
- Koshkin 10y agoAnalog television sets are (were, that is) amazing devices. Today, every piece of technology more complex than a ball pen has a microcontroller inside. Even what you might think is a somewhat complicated microchip could, in fact, be expected to perform its functions simply by means of executing some microcode. Even an FPGA-based device is likely to have its logic implemented as a "programmable state machine" (PSM) which is nothing other than a simple computer running a short program. All these digital devices are built using many thousands, if not millions, transistors. In contrast, analog devices of the past century - TVs, radios, turntables, etc. only had a dozen or so transistors, or, in the case of using vacuum tubes instead of transistors, even less than that. They were engineering marvels - especially considering the function to complexity ratio. Today's protocol stacks and the amount of hardware and software required for their implementation all look insane compared to the highly sophisticated yet simple analog "protocols" such as NTSC.