What is CD+Graphics?
CD+Graphics or CD+G is an extension to the Red Book, defined by Philips and JVC. CD+G allows for the storage of simple graphics in the subcode channels of each sector on a CD-Audio disc. Each sector has 8 subcode channels combining 384 bits, resulting in 75 (sectors per second) x 384 bits = approx. 3.6 Kbyte per second. Due to this low bit rate, only very simple graphics can be stored. CD+Graphics can show 16 colors at one time on the screen, from a palet of 4096 colors in a resolution of 288×192 pixels. Any font that is used has to be encoded in the graphics stream as a graphical element. CD+G allows for the change of colors used on the screen, so that words can be highlighted for singalong purposes. CD+G is mainly used in Japan for karaoke-applications, and never gained much popularity outside this country. However, in Japan quite a few CDs were enhanced with CD+Graphics. CD+G can be played on CD-Audio players with a Digital Output connected to a CD+G decoder, on most game consoles (
