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有沒有更快的DVD和CD驅動器?

有沒有更快的DVD和CD驅動器?

Geoffrey Carr

整個20世紀90年代和21世紀初,我們都享受越來越快的CD和DVD驅動器,但隨後增長曲線趨於平穩。我們會看到更快的光盤驅動器嗎?

今天的問答環節由SuperUser提供,這是Stack Exchange的一個細分,Stack Exchange是一個社區驅動的問答網站分組。

問題

好奇的超級用戶閱讀器User1301428想知道為什麼光盤驅動器沒有得到更快。他寫:

I was thinking about the fact that in the last years I have never seen CDs and DVDs supporting writing/reading speeds higher than 52X and 16X, respectively.

Is this a commercial choice (i.e. manufacturers don’t care about optical discs anymore and focus more on flash memories and SSD drives) or a technical limitation (i.e. optical drives cannot support higher writing and reading speeds)?

嗯,這是什麼?這些驅動器在市場上是不切實際的還是構建不切實際的?

答案

超級用戶貢獻者PhonicUK提供以下解釋:

這主要是技術限制。簡而言之,如果你將磁盤旋轉得太快,它就會開始變得不穩定並且在純粹的壓力下擺動甚至開始分離。充其量這意味著讀/寫錯誤 - 更糟糕的是它可能會鬆動並造成損壞。

在52倍速度下,磁盤以大約24000轉/分的轉速旋轉 - 大約27000轉/分,磁盤將開始破裂。

Dan Neely提醒我們有人試圖突破速度障礙:

About a decade ago there were CD drives that used multiple laser beams to read 7 tracks at once for higher performance without having to spin the disk extremely fast. However they were expensive and apparently had reliability problems as well.

It’s also worth noting that it isn’t just a question of structural integrity of the disk at high RPMs, but also of noise.

最後,Ramhound指出它當然是可能的,但是由於Blu-ray的出現,它永遠不會發生:

They could modify the disk in theory to suppor higher RPMs the problem of course is that they would create a new standard for a media that is slowly being discontinued. The simple fact is Blu-ray is the future, and most of the manufactures know that, so why waste money making a CD or DVD support faster burn times. You can already burn a double layer DVD in a few minutes.

看起來我們只需要在幾分鐘內就可以快樂地刻錄我們的DL-DVD。


有什麼要補充說明嗎?在評論中發聲。想要從其他精通技術的Stack Exchange用戶那裡閱讀更多答案嗎?在這裡查看完整的討論主題。

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