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VGA、HDMI和DVI之間有什麼區別?What’s the Difference Between VGA, HDMI and DVI?

The Difference Between VGA, HDMI and DVIThe Difference Between VGA, HDMI and DVIThe Difference Between VGA, HDMI and DVI
插圖: 戈登麥克阿爾平

幾乎可以肯定,顯示器和PC之間的連接是三種類型的電纜之一:VGA,HDMI和DVI。那有什麼區別?

VGA是三者中最古老的標準,於1987年推出.VGA只處理視頻而不是聲音,不包含安全或數字版權管理,是一種模擬信號,意味著電纜的質量,引腳的質量,從PC到顯示器的距離都會對視頻質量產生影響。如果你的連接器在電纜旁邊有一個小拇指螺絲,看起來像左邊的圖形,那就是VGA。

最初出現在2003年的HDMI經常出現在現代電視機上,但也出現在大多數新型PC顯示器上,並且在大多數筆記本電腦上迅速成為必需的硬件。 HDMI是數字標準,意味著連接在(1)或關閉(0)。電纜的質量,從機器到顯示器的距離以及連接器中的金屬類型都幾乎無關緊要(所以不要為HDMI線纜支付太多費用!)HDMI也可以處理安全性,這意味著某些可以阻止付費電視等信號類型沿HDMI線傳輸。 HDMI可以處理聲音和視頻,因此帶有耳機插孔和HDMI線的顯示器可以從筆記本電腦輸出聲音。 HDMI看起來像中間的圖形。

DVI發明於1999年,類似於VGA和HDMI。它可以配置為數字,模擬或兩者;它可以處理數字版權管理;它可以通過轉換器電纜或加密狗(小型轉換器設備)轉換為HDMI和VGA。您的視頻卡很可能具有HDMI和DVI連接器,或者其中一個,並且通常隨附所需的加密狗。它不像HDMI那樣支持聲音,看起來像上面的右圖。

現在你知道了這些類型的電纜之間的差異,以及每種電纜的優缺點。考慮自己受過視頻連接器的教育!

  • 匿名

    thanks for that information,
    Good Bless you.

  • Simeon

    I am very glad thet can to read for HDMI.thanks

  • Simeon

    HDMI cable 10 meters long,will bi good for transoport(audi and video) from my PS to my TV?

  • Hi Simeon,
    Yes … the nice thing about HDMI is that it can be almost any length, and the signal won’t degrade, since it’s a digital cable. You can also purchase inexpensive HDMI cables and get exactly the same quality signal as you would with an overpriced cable.

    Good luck!
    ReviverSoft

  • foam

    where are these ports present are they on laptops or the television

  • Abhishek Koli

    Hi,

    I have an acer s3-391 laptop with an HDMI Port (output). I need to connect it to a projector which has a VGA (input).

    I understand that the Laptop (HDMI port) would send a digital signal output whereas the projector (VGA Port) is compatible to receive analog signal.

    Is there some connector or adapter that can be used to switch the signal from digital to analog?

  • reviversoft

    Hi Abhishek,
    Yes, there are many HDMI out to VGA in convertors out there. Be aware that you may run into digital rights management issues if the HDMI signal carries them. Good luck!

  • reviversoft

    Foam,
    Ports can be found on any device. Which devices are you asking about specifically?

  • Davide De Vellis

    Hi Gerard,

    You can purchase an adpater to convert your VGA output into HDMI to be able to then plug into your TV. The other problem you will likely face is that since your PC is older there will be compatibility issues. VGA is an analog signal where HDMI is digital. You’re graphics card would need to be able to send Digital signal which is unlikely in an older computer. You can buy a converter but then you really need to consider if it’s worth the time and effort.

  • fred p

    Thanks Steve for such a good and short explanation! It’s quite clear.
    I have a tv with both vga and hdmi connections, and only vga on my pc. Exit vga! I can throw it away! (for now, what the need for?)
    Thanks again,
    fp

  • Kath

    I tried and failed to persuade my old monitor to accept a VGA to DVI converter, tried three different ones but no go. So cannot use the graphics card in the newer computer, have to use the inbuilt graphics connection at the mo which isn’t much good. New monitor definitely required.

  • Satyannarayana Yedla

    Thank you for info.

  • Ebbe Hansen

    There is a fourth standard, DisplayPort. It would be nice if you added this to your article.

  • HDMI is the most common connector. But if you want to connect a computer to your TV (or you’ve got a new computer monitor), the options tend to be HDMI, DisplayPort, DVI, and sometimes old-school VGA.




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