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VGA to TV

By: Aeronx Mc Mall

Naturally the computer graphics (VGA) and normal broadcast television (NTSC, PAL are possible to show VGA video on television screen with somewhat degraded quality). This change can be done with some outside hardware or the change hardware can be built into the graphics cards.

Normal graphics signals you see on televisionscreen are generally in composite video or RF (antenna). The video signal sent out by PC graphics cards (VGA, SuperVGA and newer cards) is analogue RGB signal with separate sync signals. The video resolutions vary television.

The video type used in broadcast television is interlaces but computer uses non-interlaced graphics. Also the picture type sync rates vary. When displaying computer graphics on television screen you will very easily see the limitations of the television itself and the television broadcast regulation.

Sometimes the person needed to show graphics from PC on television screen.
Television signals and VGA monitors are incompatible with each other. Normal video signals.

What you see on television screen are generally in composite video or RF (antenna) types which VGA monitor does not have any suitable input rates of TV is 15625 Hz (for PAL and SECAM standards) or 15750 Hz (for NTSC standard). The VSYNC rate is 50 Hz (for PAL and SECAM) or 60 Hz (for NTSC). VGA monitor can only take RGB signals with different sync signals (HSYNC, VSYNC).

StandardVGA used around 31 KHz HSYNC rate and 60-70 Hz frame rate. Picture is normally drawn at each screen update (no interlacing normally , can be used if the HSYNC rates and VSYNC rates have grown because of grown resolutions and need for quicker screen refresh rates for less flickering cards output and monitors can take).

Because of various signal types and various screen refresh rates the picture you send . The TV signal can be the renew rates of TV signal is cannot work with what the VGA monitor is capable of . To be able to show television video on a VGA screen a good amount of conversion is monitor wants. Let's start with the computer connection, that is, first available monitor connections. Based on your computer's video capabilities , you connection, or an S-Video output.

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