reference 1:

what does BD version mean?

bd version is Blu-ray Disc (BD for short), which is one of the next generation disc formats of DVD disc, and is used to store high-quality audio and video and high-capacity data storage. Blu-ray Disc (Blu-rayDiscAssociation), which is composed of Philips, Sony and Matsushita Electric Industry, was the first disc specification. In 26, led by Philips, Blu-ray Disc related products were comprehensively promoted.

Blu-ray Disc is named because it uses a blue laser beam with a wavelength of 45 nm to read and write (DVD uses a red reader with a wavelength of 65nm, while CD uses a wavelength of 78nm). The reason why the English name of Blu-ray Disc doesn't use "Blue-ray" is that the word "Blue-rayDisc" is colloquial in Europe and America, and it has explanatory benefits, so it can't constitute a license to apply for a registered trademark. Therefore, the Blu-ray Disc Alliance deleted the English word E to complete the trademark registration.

Blu-ray disc has an exceptionally strong layer, which can protect the important recording layer inside the disc. Philips Blu-ray Disc adopts advanced vacuum connection technology, forming a uniform thickness of 1? The security layer of m. Philips Blu-ray Disc can withstand frequent use, fingerprints, scratches and dirt to ensure the storage quality and data security of Blu-ray products. From

Technically, the Blu-ray recorder system is compatible with various optical disc products that have appeared before. The huge capacity of Blu-ray products makes it possible and convenient for high-definition movies, games and large-capacity data storage. It will greatly promote the development of high-definition entertainment. At present, Blu-ray technology has also been supported by more than 17 major game companies, film companies, consumer electronics and home computer manufacturers in the world. Seven of the eight major film companies: Disney, Fox, Paramount, Warner, Sony, MGM and Lions Gate.

Reference 2:

What does BD mean?

when searching for a movie, a BD version will appear. What does this BD version mean?

the BD of a movie is a high-definition movie version. This kind of movie is very clear but has a huge amount of data, accounting for tens or even hundreds of gigabytes. Only Blu-ray discs can hold it, so this kind of high-definition movie is called BD version.

BD is short for BlueDisk, which means "Blu-ray Disc" when translated into Chinese. At the moment, the laser head of DVD is orange-red, and the wavelength of blue light is smaller, that is, the focus point on the disc is smaller, so that more data can be stored on the disc of the same size. This is the basic principle of blue light, and a disc seems to store 5G of data.

Blu-ray disc player uses blue laser to read files on the disc. Due to the short wavelength of blue light, it is possible to read optical discs with higher density. So why can Blu-ray read and write more compact discs? Let's start with the laser:

The laser used for reading and writing is a very accurate light, accurate to the limit, that is, the general wavelength of light. Because the wavelength of red light is 7 nm, while that of blue light is only 4 nm, the blue laser can actually be more accurate and can read and write a point with only 2nm, while the red laser can only read and write a point with 35nm, so the same optical disc has more points.

Blue-RayDisk is a Blu-ray disc, which is one of the standards of the next generation of DVD. The leaders are Sony and Toshiba, with Sony, Panasonic and Philips as the core, and it is also supported by giants such as Pioneer, Hitachi, Samsung and LG. The storage principle is groove recording, and the traditional groove recording is used. However, the storage and data management of larger capacity are realized through more advanced jitter addressing, which has reached the shocking 1GB at present. Compared with the traditional storage form of CD or DVD, BD disc obviously brings better reflectivity and storage density, which is the key to its capacity breakthrough.