Different between DVD+ and DVD-

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Different between DVD+ and DVD-

Post  Rynn on Mon Dec 17, 2007 4:13 pm

DVD+-R的不同處
其實主要就是定址(addressing)的方式不同。
為什麼需要定址?
因為燒錄片要讓燒錄機知道,從哪開始燒,現在燒到哪等等,
所以就會有預刻軌道,負責引導燒錄雷射光束,並且在這軌道中做些手腳,讓燒錄機
能夠辨識燒到哪裡了。

那+-R最大的差異,就是這些手腳做的方法不同而已。怎麼不同?
簡單講,

+R採用頻率較高的wobble(引導軌是會搖擺or抖動的,這抖動就叫wobble)817,4kHz,
其定址是利用在預刻凹軌處,wobble的相位調變來達成,此方式的訊號辨識率比-R來
的好,且製造過程的金屬模板較-R來的不複雜(引導軌圖形)。符合了+R聯盟講的,易
高倍寫,易生產製造等。
可能你會問,那為什麼+R比較貴?其實那是很精確的講啦,實際上+-R的製造沒那麼大
的差異,誰做的量多,價格就可以壓比較低,而-R的片子較早推出,故~。

-R wobble頻率為140,6kHz,定址是直接在凸軌處預刻定址訊坑,此種addressing方式
,訊號辨識度較差,當倍速一拉高時,會有定址不易的情形!故-R要高倍燒錄困難度較
高!
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Re: Different between DVD+ and DVD-

Post  Rynn on Mon Dec 17, 2007 4:14 pm

DVD +-R differences
In fact, is mainly located (addressing), in different ways.
Why do we need addressing?
Because the writers let writers know that film, where started burning, burning now where and so on.
So there will be pre-carved track, responsible for guiding the laser beam writers, and in this orbit limbs do so Writer
Where can spread the identification.

The + - R biggest difference is that these hands different ways to do it. How different?
Simply speaking,

R + by higher wobble frequency (guide rail will be wavering or jitter, jitter called wobble) 817,4 kHz,
Its use is located in the pre-carved Au orbit, the wobble to reach phase modulation, this approach is the recognition rate than - R to
Good, and the manufacturing process than the metal template - not the complex to R (graphic guide rail). In line with the Union stresses + R, -
Write high-power, easy to manufacture, such as.
You may ask, why + R expensive? In fact it is very precise stresses you, in fact + - R manufacturers not so big
The difference, who do volume, price pressure will be relatively low, and - R launched earlier films, it ~.

- R wobble frequency 140,6 kHz, located directly in the pre-bump moment addressability - Hang, addressing such methods
, The signal identification of the poor, when the speed higher, will be addressing the difficult circumstances! Therefore - R should be more difficult for high-power burners
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Good Post

Post  Fish on Thu Dec 20, 2007 5:30 pm

Good post... erm...how do u think that every burner can support of +R or -R...both also can d? Or did i need to compare with the type of burner?
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Re: Different between DVD+ and DVD-

Post  Rynn on Thu Dec 20, 2007 7:52 pm

today all DVD burner support DVD+ or -, the different between DVD- n DVD+ is that DVD- is more cheaper but the speed is lower, that why u hard to burn using DVD- cause u cannot use high speed to burn it
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Re: Different between DVD+ and DVD-

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