Multiplexed Analogue Component Systems (MAC) is a video transmission standard used in analog television systems. It was developed in Japan in the 1980s and was primarily used in high-definition television (HDTV) broadcasting.
The MAC standard uses analog modulation to transmit video signals over the airwaves. The video signal is divided into three color components (red, green, and blue), which are transmitted separately along with the synchronization signals. The MAC system uses frequency-division multiplexing (FDM) to combine the three color components into a single signal, which is then transmitted over the airwaves.
One of the key advantages of the MAC system was its ability to transmit high-quality video signals over long distances without significant degradation in picture quality. This was achieved through the use of advanced error-correction techniques and the use of a wider bandwidth than traditional analog TV systems.
However, with the advent of digital broadcasting technologies, the MAC system has become obsolete. Today, most countries have switched to digital TV broadcasting standards, such as DVB-T and ATSC, which offer better picture quality and more efficient use of the available spectrum.
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