FärgTVsignalformat

FärgTVsignalformat refers to the specific technical standards used to transmit color television signals. These formats dictate how chrominance (color information) and luminance (brightness information) are encoded, modulated, and transmitted over broadcast or cable networks. Over the years, several färgTVsignalformat have been developed and adopted globally.

The earliest color television systems, like NTSC (National Television System Committee), PAL (Phase Alternating Line), and SECAM (Séquentiel Couleur à Mémoire), were analog. NTSC, primarily used in North America and parts of Asia, encodes color information as a subcarrier frequency modulated onto the main video signal. PAL, used in Europe and many other parts of the world, employs a phase alternation of the color signal on alternate lines to improve color accuracy and reduce the impact of transmission errors. SECAM, used in France and some former Soviet bloc countries, transmits the two color difference signals sequentially, using a frequency modulation technique.

With the advent of digital television, analog färgTVsignalformat have largely been replaced by digital standards. These digital formats, such as DVB (Digital Video Broadcasting) in Europe and ATSC (Advanced Television Systems Committee) in North America, offer advantages like higher picture quality, better spectrum efficiency, and the ability to carry additional data. Digital formats typically encode color information in a YCbCr color space, where Y represents luminance and Cb and Cr represent the blue and red differences from a mid-gray, respectively. The specific methods of compression and transmission vary within these digital standards. The transition from analog to digital has been a significant evolution in how color television signals are formatted and delivered.