1, vinyl disc: It is a three-dimensional black hard disc.

2. Ordinary optical disc: an article that uses optical information as a storage carrier and is used to store data.

Second, the technical characteristics are different.

1. vinyl disc: specially treated materials (the laser reflective coating of vinyl disc is made of amethyst) and processing procedures reduce the scattering of laser beams, enhance the reading energy of concentrated laser beams and the accuracy of output signals, enhance the stability of disc rotation and reduce the jitter rate.

2. Ordinary CD: liad-in (location where data is recorded); Then there is the directory area, which records data from the inside out; After recording, add the export track end recording mark.

Third, the roles are different.

1, vinyl disk: mainly aimed at reducing the signal distortion of digital reading system in CD player and the "error correction distortion" of error correction system.

2. Ordinary optical disc: a device that uses laser principle to read and write. It is a rapidly developing auxiliary memory, which can store various multimedia digital information such as words, sounds, graphics, images and animations.

Baidu encyclopedia-vinyl CD

Baidu encyclopedia-CD