The key points are as follows. Another problem is that the performance of an optical drive can also determine its capability. It's best to buy famous ones.
DVD: (Digital-Versatile-Disk) Digital Multifunctional Disc, based on MPEG-2, with a large capacity of 4.7G, can store 65,438+0.33 minutes of high-resolution full-motion video programs, including a dolby digital surround sound track. The picture quality and sound quality are incomparable to VCD.
DVD+RW: A rewritable DVD disc, also called DVD-e, is a standard issued by Hewlett-Packard, Sony and PHOIPS * * *. The capacity is 3.0GB, and CAV technology is adopted to obtain high data transmission rate.
PD optical drive: (PowerDisk2) is a combination of Panasonic's writable optical drive and CD-ROM. There are two models: LF- 1000 (external) and LF- 1004 (internal). The capacity is 650MB, the data transmission rate is 5.0MB/s, and the micro laser head and precision electromechanical servo system are adopted.
DVD-RAM: A commercially readable and writable DVD standard established and published by the DVD Forum Association. It has large capacity, low price, high speed and strong compatibility.
BD-ROM: (Blu-ray Disc) BD-ROM is a read-only disc of Blu-ray Disc, which is an external storage medium capable of storing a large amount of data and can be called "Blu-ray Disc".
BD is one of the next generation optical disc formats after DVD, which is used to store high-quality audio and video and large-capacity data storage. It should be noted that the title "Blu-ray Disc" is not the official Chinese name of this product. This is an unofficial Chinese name, which is taken by people in the Chinese world for easy memory. Sony itself has not corrected the Chinese name of this product. Blu-ray Disc Association (BDA), which is composed of Sony and Panasonic, is the next-generation optical disc specification. Sony, as the head of the company, began to fully promote related products in 2006. Blu-ray Disc is named after reading and writing with a blue laser beam with a wavelength of 405 nm (DVD uses a red reader with a wavelength of 650 nm and CD uses a wavelength of 780 nm). The reason why "Blue-ray" is not used in the English name of Blu-ray Disc is that the word "Blue-ray Disc" is popular and colloquial in Europe and America, which has explanatory significance and cannot constitute the license of registered trademark. Therefore, the Blu-ray Disc Alliance has deleted the English word E to complete the trademark registration. On February 19, 2008, Toshiba, the leader of HD DVD, announced that it would withdraw from all HD DVD-related businesses at the end of March. The dispute over the format of the next-generation optical disc, which lasted for many years, officially came to an end, and finally the Blu-ray disc led by Sony won.