Принцип работы дисковода напоминает

Принцип работы дисковода напоминает принцип работы обычных дисководов для гибких дисков. Поверхность оптического диска (CD-ROM) перемещается относительно лазерной головки постоянной линейной скоростью, а угловая скорость меняется в зависимости от радиального положения головки. Луч лазера направляется на дорожку, фокусируясь при этом с помощью катушки. Луч проникает сквозь защитный слой пластика и попадает на отражающий слой алюминия на поверхности диска. При попадании его на выступ, он отражается на детектор и проходит через призму, отклоняющую его на светочувствительный диод. Если луч попадает в ямку, он рассеивается и лишь малая часть излучения отражается обратно и доходит до светочувствительного диода. На диоде световые импульсы преобразуются в электрические, яркое излучение преобразуется в нули слабое - в единицы. Таким образом, ямки воспринимаются дисководом как логические нули, а гладкая поверхность как логические единицы. Таким образом считывается информация.

Результаты (английский) 1:

Principle of operation principle of operation resembles conventional drive floppy floppy disk drive. The surface of an optical disc (CD-ROM) moves in relation to the laser head constant linear velocity and angular velocity varies depending on the radial position of the head. The laser beam is directed to the track, with a focus on the use of the coil. The beam penetrates through the protective layer of plastic and hits the reflective layer of aluminum on the surface of the disk. When you hit it on the ledge, he reflected on the detector and passes through a Prism deflection it on photosensitive diode. If the ray hits the hole, it is scattered and only a small portion of the radiation is reflected back and comes to photosensitive diode. On the diode light pulses into electrical, bright light converts to zero weak-in units. Thus, the Fossa are seen as logical drive zeros, and the smooth surface as logical units. Thus the information is read.

Результаты (английский) 2:

The principle of the drive are similar to those of conventional floppy disks. The surface of the optical disk (CD-ROM) is moved relative to the laser head constant linear velocity and the angular velocity is changed depending on the radial position of the head. The laser beam is directed on the track by focusing with using a coil. The beam penetrates through the protective plastic layer and is incident on the reflective layer of aluminum on the surface of the disc. When you hit it on the ledge, he reflected on the detector, and passed through a prism, deflecting it to a photosensitive diode. If the ray hits the hole, it is scattered and only a small part of the radiation is reflected back and comes to the light-sensitive diode. Diode light pulses are converted into electric, bright radiation is converted into zeros weak - a unit. Thus, the pits are seen as logical zeros drive, and the smooth surface as logical units. Thus the information is read.

Результаты (английский) 3:

The principle of work drive recalls the principle of the work of conventional drives for the diskette drive. The surface an optical disc (CD-ROM) moves the laser head constant linear speed,A angular speed varies depending on the radial head position. Laser beam is directed at a track, agree with this with the coil.The beam penetrates through the protective layer plastic and enters through the reflective layer of aluminum on the surface of the disc. If you spill it on the lug, he reflected on the detector and passes through a prism,The deflector on the photosensitive diode. If the beam enters the beliefs, it is dissipated and only a small portion of radiation is reflected back to and comes to light diode.On diode light pulses are converted to electrical, bright light is converted into zeroes weak - in units. Thus, pits are perceived as logical drive zeroes,A smooth surface as logical units. Thus read information.