HD DVDS are DVDs that can be played on high definition TV players. The regular DVD can be played on any TV and is not in the same definition as the HD DVDs.
DVDs are important and movies still support it, but more movies are starting to support HD DVDs or Blu-Ray Discs, the difference between them is that normal DVDs can store up to probably 5GB of space while HD DVDs or Blue-Ray Discs can support HD Music, Games, Movies, Videos etc. and stores about 10GB of space
No and HD DVDs have been permanently discontinued
HD DVD and Bluray were competing high definition disc formats. In 2009 HD DVD was withdrawn from sale as it became apparent that Bluray had won the HD disc battle. The two formats are not compatible so HD DVDs can only be played on an HD DVD player.
No and HD DVDs have been permanently discontinued
The difference is full HD means that the whole video is in HD.
No, it only plays standard DVDs.
No, due to technical differences, only a HD DVD drive can play HD DVDs.
Yes the PS3 will upgrade the DVDs to near HD quality.
"HD" stands for "high density" or alternatively, "high definition." HD dvds were able to store 3 times as much data as other dvds. However, HD dvds have been discontinued after 2008, following a costly format war with Blu-ray dvds.
HD DVDs or High Density Digital Versatile Disc are digital optical media formats. While HD DVDs are similar to Blu Ray DVDs they are not the same. HD DVDs were discontinued in 2008. Therefore, no you are not able to use a Blu Ray disc in an HD movie player.
Playstation 3 will play HD DVDs. You do not need an accessory to have the HD DVD work.
If you wanted to watch HD DVDs on the 360 you would have to buy the extra external HD DVD player. This does not make much sense now because HD DVDs "lost" the format war to Blu Ray.