The difference and comparison between DVD-R and DVD+R
On the surface, DVD+R discs look no different from DVD-R discs. They both have a diameter of 120mm and a thickness of 1.2mm, including two 0.6mm polycarbonate substrates. However, DVD+R is written as "DVD+R" on the disc, while DVD-R discs have their own terminology. The main differences and comparisons between DVD+R and DVD-R mainly focus on standards, compatibility, quality, speed, and price.
1. DVD+R VS DVD-R - Standard Differences
The DVD-R format was developed by Pioneer in 1997. Most regular DVD players support this format and have obtained approval from DVD forums,.
The DVD+R format was developed by Philips, Sony, and their DVD+RW alliance and was launched in 2002.
Companies that support DVD-R include Pioneer, Toshiba, Hitachi, and Panasonic, while companies that support DVD+R include Sony, Philips, HP, Ricoh, and Yamaha.
2. DVD-R vs. DVD+R - Functional Differences
The main functional difference between DVD-R and DVD+R is the way they determine the position of the laser on the disc.
DVD-R uses small Q-marks (called "protrusions and indentations") on the grooves of the optical disc to determine the position of the laser. DVD+R does not have a concave surface, but measures the oscillation frequency when the laser moves towards the outside of the disc.
3. DVD-R vs. DVD+R - Quality/Speed/Price Comparison
By applying different Q technologies, DVD+R has better performance than DVD-R in many aspects. For example, in terms of recording quality and speed, DVD+R leads DVD-R. Therefore, DVD-R discs are usually cheaper than DVD+R formats.