NTSC (National Television Systems Committee)´Â ¹Ì±¹, ÀϺ», ij³ª´Ù, ¸ß½ÃÄÚ¿¡¼ TV¸¦ ¹æ¿µÇÏ´Â FCC°¡ äÅÃÇϰí Àִ ǥÁØÇü½ÄÀÌ´Ù. ±¤µµ(luminance) ¿Í »ö(color)ÀÌ ÇϳªÀÇ ¾Æ³¯·Î±× ½ÅÈ£·Î ¸ð¾ÆÁö±â ¶§¹®¿¡ ÇÕ¼º¹° ºñµð¿À¶ó°í ºÒ¸°´Ù:
PAL
50 Hz Àü¿ø½Ã½ºÅÛ¿¡ ±â¹ÝÇÑ PAL (Phase Alteration Line) Àº ¼µ¶, ¿µ±¹, ´ëºÎºÐÀÇ ¼À¯·´±¹°¡ÀÇ TV¹æ¿µÀÇ Ç¥ÁØ ¹æ½ÄÀÌ´Ù. »ö»ó½ÅÈ£¿ä¼Ò °ü·Ã À§»ó(phase)À» ´Ù¸¥ ½ºÄ³´×¶óÀÎ(scanning line)À¸·Î ¹Ù²ã Áֱ⠶§¹®¿¡ NTSC¿¡¼ ÀÚÁÖ ¹ß»ýÇÏ´Â »öÀÇ µÚƲ¸²(color distortion)Àº ÇÇÇÒ ¼ö ÀÖ´Ù. ´Ù¸¥ ±â´ÉÀº NTSC¿Í ºñ½ÁÇÏ´Ù.
SECAM (Sequential Couleur a Memoire or Sequential Color with Memory)Àº ÇÁ¶û½º, µ¿À¯·´, F.S.U, ±×¸®°í ¸î¸î Áßµ¿ÀÇ ±¹°¡°¡ »ç¿ëÇÏ´Â ºñµð¿À Çü½ÄÀÌ´Ù. PAL, SECAM°ú ¸¶Âù°¡Áö·Î 50 Hz Àü¿ø ½Ã½ºÅÛ¿¡ ±â¹ÝÇÑ´Ù.
»ö»ó±âÈ£°¡ ¿¬¼ÓÀûÀ¸·Î Àü¼ÛµÈ´Ù. (R-Y µÚ¿¡ B-Y¿Í °°Àº Çü½Ä)