Jpeg

Appendix

Additional Information

ISO9660 format

This is the international standard for the for- mat logic of CD-ROM folders and files. For the ISO9660 format, there are regulations for the following two levels.

Level 1:

The file name is in 8.3 format (the name con- sists of up to 8 characters, half-byte English capital letters and half-byte numerals and the “_” sign, with a file-extension of three charac- ters).

Level 2:

The file name can have up to 31 characters (in- cluding the separation mark “.” and a file ex- tension). Each folder contains less than 8 hierarchies.

Extended formats

Joliet:

File names can have up to 64 characters. Romeo:

File names can have up to 128 characters.

This stands for Joint Photographic Experts Group, and is an international still image com- pression standard.

Linear PCM (LPCM)/Pulse code modulation

This stands for linear pulse code modulation, which is the signal recording system used for music CDs and DVDs. Generally, DVDs are re- corded with higher sampling frequency and bit rate than CDs. Therefore, DVDs can provide higher sound quality.

m3u

Playlists created using the “WINAMP” soft- ware have a playlist file extension (.m3u).

MP3

MP3 is short for MPEG Audio Layer 3. It is an audio compression standard set by a working group (MPEG) of the ISO (International Stan- dards Organization). MP3 is able to compress audio data to about 1/10th the level of a con- ventional disc.

MPEG

This stands for Moving Pictures Experts Group, and is an international video image compression standard. Some DVDs feature di- gital audio compressed and recorded using this system.

MS ADPCM

This stands for Microsoft adaptive differential pulse code modulation, which is the signal re- cording system used for the multimedia soft- ware of Microsoft Corporation.

Multi-angle

With regular TV programs, although multiple cameras are used to simultaneously shoot scenes, only images from one camera at a time are transmitted to your TV. Some DVDs feature scenes shot from multiple angles, let- ting you choose your viewing angle as desired.

Multi-audio (Multilingual dialog) Some DVDs feature dialog recorded in multi- ple languages. Dialog in up to 8 languages can be recorded on a single disc, letting you choose as desired.

Multi-session

Multi-session is a recording method that al- lows additional data to be recorded later. When recording data on a CD-ROM, CD-R or CD-RW, etc., all data from beginning to end is treated as a single unit or session. Multi-ses- sion is a method of recording more than 2 ses- sions on one disc.

Multi-subtitle

Subtitles in up to 32 languages can be re- corded on a single DVD, letting you choose as desired.

Number of quantization bits

The number of quantization bits is one factor in the overall sound quality; the higher the “bit-depth”, the better the sound quality. How- ever, increasing the bit-depth also increases the amount of data and therefore storage space required.

Additional Information

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