2008 Lexus GX 470 Owners Manual - Page 290

3-3. Using the rear audio system n Symbols shown on DVD video discs Indicates NTSC format. Indicates the number of audio tracks. Indicates the number of language subtitles. Indicates the number of angles. 3 Indicates the screen display ratios available. Wide screen: 16:9 Standard: 4:3 Indicates the disc's region code. All: all countries Number: region code n DVD video disc glossary l DVD video discs: Digital Versatile Discs that hold the world's standard video. Interior features 241 DVD video discs have adopted "MPEG2", one of the world standards of digital compression technologies. The picture data is compressed by 1/40 on average and stored. Variable rate encoding technology has been adopted in which the volume of data assigned to the picture is changed depending on the picture format. Audio data is stored using PCM and Dolby digital, which enables higher sound. Furthermore, multi-angle and multi-language features will also help you enjoy the more advanced technology of DVD video.