Why DL DVDs Stores Less Data Must Watch Full HD

In this video demonstration I explained about Single Layer, and Dual Layer (DL) DVD’s storage capacities, logic behind DL DVD’s less storage data, data storage basics on DVD’s. A DVD is composed of several layers of plastic, totaling about 1.2 millimeters thick. Each layer is created by injection molding polycarbonate plastic. This process forms a disc that has microscopic bumps arranged as a single, continuous and extremely long spiral track of data. More on the bumps later. Once the clear pieces of polycarbonate are formed, a thin reflective layer is sputtered onto the disc, covering the bumps. Aluminum is used behind the inner layers, but a semi-reflective gold layer is used for the outer layers, allowing the laser to focus through the outer and onto the inner layers. After all of the layers are made, each one is coated with lacquer, squeezed together and cured under infrared light. For single-sided discs, the label is silk-screened onto the nonreadable side. Double-sided discs are printed only on the nonreadable area near the hole in the middle.
Video Rating: 4 / 5

9 Responses to “Why DL DVDs Stores Less Data Must Watch Full HD”

  • MrRavisa:

    శ్రీధర్ గారు 
    చాలా మంచి విషయాలు మీ ద్వార తెలుసుకుంటున్నాము. మీకు సర్వదా కృతజ్నతలు.
    రవి శంకర్  

  • nallamothu:

    Yakub7170 గారు, డివిడి, సిడిలకు index మాదిరిగా TOC అని ఉంటుంది. దాని కోసం స్పేస్ ఆక్రమించుకోబడుతుంది.

    కృష్ణచైతన్య గారు థాంక్యూ.

    మెట్టసీమ గారు థాంక్యూ

    సాయి భరద్వాజ్ గారు థాంక్యూ

  • yakub7170:

    hai sridhar garu miru chepintluga 4.7gb gala single layer lo 4.47gb data matrame enduku ride avthundi?
    plzz tell me the answer. 

  • krihnachaitanya:

    very nice sir…. i learn new concept today

  • avkkarthik:

    you are giving valuble information sir

  • mettaseema:

    good information

  • saibharadwaj143:

    Wow,,, Thank you for you Valuable Information Sridhar Garu…. 

  • nallamothu:

    Thank you Naveen Gaaru.. :)

  • naveen9885:

    Information bagundi sridhar garu :)