What is a DVI cable used for?
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math8
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Davidus -
Davidus -
Hello,
I currently have a traditional blue cable ...
I would like to know what the DVI cable is for, what the difference is between the blue cable and the DVI, and which one is better?
Thank you for your replies.
I currently have a traditional blue cable ...
I would like to know what the DVI cable is for, what the difference is between the blue cable and the DVI, and which one is better?
Thank you for your replies.
2 réponses
Digital Visual Interface
An article from Wikipedia, the free encyclopedia: https://fr.wikipedia.org/wiki/Digital_visual_interface
Go to: Navigation, search For homonymous articles, see DVI.
DVI male connectorDigital Visual Interface (DVI), also called Digital Video Interface (obsolete designation) when it was designed by the Digital Display Working Group (DDWG), is a type of digital connection used to link a graphics card to a display. It is advantageous (compared to the VGA connector) only for screens whose pixels are physically separated (and therefore independent), which is the case for LCD, plasma, and future OLED screens but not for cathode-ray tube displays (where the electron beam reproduces -- in real-time -- the variations of the analog signal).
The DVI connection significantly improves display quality compared to the VGA connection:
thanks to a separation of color shades for each pixel: perfectly sharp image;
thanks to digital (lossless) transmission of color shades.
It is the digital equivalent of the analog RGB (Red Green Blue) connection but transmitted over three LVDS (low voltage differential signal) connections via three shielded twisted pairs.
For digital screens internally (only those with cathode-ray tubes are not), the DVI connection avoids the digital-to-analog (D/A) conversion by the graphics card, followed by the analog-to-digital (A/D) conversion in the display (remaining directly digital from one end to the other), to which must be added the losses and interference during transfer through the cable caused by VGA. The DVI interface helps avoid all these losses.
DVI allows the display to detect the currently displayed resolution more quickly. This also avoids screen adjustments, which are usually automated.
In mid-January 2006, a European tax of 14% was imposed on monitors with a diagonal of 50 cm (20 inches) or more, equipped with a DVI connector, manufactured outside the Eurozone.
The DVI connector [edit]
Types of DVI connectorsThere are three types of plugs:
the DVI-A (DVI-Analog) that transmits only the analog signal;
the DVI-D (DVI-Digital) that transmits only the digital signal;
the DVI-I (DVI-Integrated) that transmits (on separate pins) either the digital signal from the DVI-D or the analog signal from the DVI-A (only one type of signal depending on what is connected, without converting one to the other).
The notches present on the male DVI-A and DVI-I prevent them from being connected to a female DVI-D connector, in order to avoid connecting an analog source to a purely digital input, which is incompatible. Currently, most DVI outputs from graphics cards are DVI-I. However, if the display offers a DVI input, it will display the signal from the digital pins (in other words, the pins according to the DVI-D standard) and ignore the signal from the analog pins. The DVI-A allows retaining the possibility of using a cathode-ray display via a "DVI to VGA" adapter, having a DVI connector on one side and a VGA connector on the other.
DVI-I connectors are therefore used as either DVI-A or DVI-D depending on the type of signal they produce: analog or digital.[citation needed]
See also [edit]
Connector: Scart - S-Video - HDMI - RCA (Cinch connector) - jack - VGA - XLR
The Mini-DVI interface
External links [edit]
(en) DVI, Pinout of the connector
An article from Wikipedia, the free encyclopedia: https://fr.wikipedia.org/wiki/Digital_visual_interface
Go to: Navigation, search For homonymous articles, see DVI.
DVI male connectorDigital Visual Interface (DVI), also called Digital Video Interface (obsolete designation) when it was designed by the Digital Display Working Group (DDWG), is a type of digital connection used to link a graphics card to a display. It is advantageous (compared to the VGA connector) only for screens whose pixels are physically separated (and therefore independent), which is the case for LCD, plasma, and future OLED screens but not for cathode-ray tube displays (where the electron beam reproduces -- in real-time -- the variations of the analog signal).
The DVI connection significantly improves display quality compared to the VGA connection:
thanks to a separation of color shades for each pixel: perfectly sharp image;
thanks to digital (lossless) transmission of color shades.
It is the digital equivalent of the analog RGB (Red Green Blue) connection but transmitted over three LVDS (low voltage differential signal) connections via three shielded twisted pairs.
For digital screens internally (only those with cathode-ray tubes are not), the DVI connection avoids the digital-to-analog (D/A) conversion by the graphics card, followed by the analog-to-digital (A/D) conversion in the display (remaining directly digital from one end to the other), to which must be added the losses and interference during transfer through the cable caused by VGA. The DVI interface helps avoid all these losses.
DVI allows the display to detect the currently displayed resolution more quickly. This also avoids screen adjustments, which are usually automated.
In mid-January 2006, a European tax of 14% was imposed on monitors with a diagonal of 50 cm (20 inches) or more, equipped with a DVI connector, manufactured outside the Eurozone.
The DVI connector [edit]
Types of DVI connectorsThere are three types of plugs:
the DVI-A (DVI-Analog) that transmits only the analog signal;
the DVI-D (DVI-Digital) that transmits only the digital signal;
the DVI-I (DVI-Integrated) that transmits (on separate pins) either the digital signal from the DVI-D or the analog signal from the DVI-A (only one type of signal depending on what is connected, without converting one to the other).
The notches present on the male DVI-A and DVI-I prevent them from being connected to a female DVI-D connector, in order to avoid connecting an analog source to a purely digital input, which is incompatible. Currently, most DVI outputs from graphics cards are DVI-I. However, if the display offers a DVI input, it will display the signal from the digital pins (in other words, the pins according to the DVI-D standard) and ignore the signal from the analog pins. The DVI-A allows retaining the possibility of using a cathode-ray display via a "DVI to VGA" adapter, having a DVI connector on one side and a VGA connector on the other.
DVI-I connectors are therefore used as either DVI-A or DVI-D depending on the type of signal they produce: analog or digital.[citation needed]
See also [edit]
Connector: Scart - S-Video - HDMI - RCA (Cinch connector) - jack - VGA - XLR
The Mini-DVI interface
External links [edit]
(en) DVI, Pinout of the connector
David Swing