
	12/8/95       DVD Main Format Specifications


Physical Characteristics:

Disc Diameter:			120 mm
Disc Thickness:			1.2 mm (2 X 0.6 mm)
Memory Capacity:		4.7 gigabytes/single side
Track Pitch:			0.74 um
Wavelength of laser:		650 nm / 635 nm
N.A.				0.6
Error Correction:		RS-PC
Signal Modulation:		8-16


Specification for Audio/Video Application:

Data transfer Rate:		Variable speed data transfer, at an 
				average rate of 4.69 mb/sec for
				image and sound.
Image Compression:		MPEG-2
Audio:				Dolby* AC-3 (5.1 channels),
				LPCM for NTSC and MPEG Audio,
				LPCM for PAL/SECAM,
				(a max. of 8 audio channels and
				32 subtitle channels)
Running Time:			133 min. per side
				(at ave. data rate of 4.69 mb/sec
				for image and sound, including 3
				audio channels and 4 sub-title channels)
File Management Structure:	Micro UDF and ISO-9660



Specifications for Computer Application:

File Management Structure:	Micro UDF and/or ISO-9660



* Dolby is a trademark of Dolby Laboratories Licensing Corp.
