General Question

jackm's avatar

Can a blue-ray diode read a DVD?

Asked by jackm (6212points) December 7th, 2009
2 responses
“Great Question” (0points)

I am talking about the diode specifically, as I know most blue-ray players are backwards compatible with DVDs. Do they have to add the old red diode to read the DVDs, or can the blue diode read both?

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Harp's avatar

According to this source (among others), two different laser sources are required for CD/DVD backward compatibility, or three different sources to also make it BD/HD DVD compatible.

jackm's avatar

@Harp
Thanks for the response, thats what I figured.

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