How to connect your TV with HDMi

Because now the LCD TV basically has a VGA interface, so you can easily use the VGA line to achieve computer connection on the TV, but the article has a place not mentioned, that is the resolution of the problem, now the mainstream LCD TV panel is full HD panel (1920x1080), but unfortunately, A lot of TV (especially some domestic TV) on the VGA interface still stay in the standard five or six years ago, can only support 640x480,800x600,1024x768 these common low-end display resolution, can not support 1920x1080, let your full HD LCD panel Can't play the best level! (Is Haier's 52-inch LCD TV lu52t1 instructions, wherein the PC interface is the VGA interface, only support the maximum 1024x768 resolution, so if you want this TV to display 1080P screen, you can only use its HDMI interface for computer-connected TV)

However, the resolution does not support 1920x1080 is not the worst, after all, the resolution of 1024x768 is quite clear, and the word is larger, the key problem is that if you use 1024x768, the screen is 4:3, and the TV is 16:9, so you will see the picture is squashed, Feeling very bad, as shown, the left side is 4:3 scale 1024x768, the right side is 16:9 percentage of 1280x720.

　　How to use HDMI cable to realize computer connected TV

First, you need to have an HDMI input TV, a video card with HDMI output of the computer, if the computer does not have HDMI output, DVI output can be, but need to use a DVI to HDMI adapter.

Second, you need a suitable length of the HDMI cable, here we recommend not to use more than 10 meters of HDMI cable, regardless of those selling line manufacturers how to trick you, because a pure HDMI line (no special circuit enhancement) after more than 10 meters, It's hard to guarantee that you can continue to support the high resolution of 1920x1080, and a 10-meter HDMI line price is not cheap, if not up to 1080P (1920x1080), what is the point?

Finally, is the connection, very simple, only an HDMI line, one end of the computer graphics card HDMI output, one end of the HDMI input into the TV, the realization of the computer connected to the TV, the computer's voice and images can be sent to TV, the following we will focus on the computer connected to the TV, the use of some of the problems easily encountered.

　　Problems that are easily encountered in use

　　First, the display resolution setting

Carefully read the TV manual (or above the Haier TV instructions), you will find that the TV HDMI support resolution and VGA, DVI port support is completely different, the marking method is not the same (is 720p,1080i,1080p), yes, this is the HDMI standard, The standard HDMI signal does not support the resolution commonly used by these monitors like 1024x768,1440x900,1680x1050, so if you do not set the resolution of the computer's graphics output to the format supported by the HDMI port, the TV may be black-screen, This is a low-level mistake that many friends often make. As for what is 720p,1080i,1080p, it is very simple, basically equivalent to the video card resolution of 1280x720 @60hz,1920x1080 @30hz interleaved, 1920x1080 @60hz.

　　Second, why not sound?

Many friends use the HDMI cable to make the computer connected to the TV, there is always no sound on the TV, but the HDMI line itself is to support sound audio transmission, which is why? This phenomenon is mainly caused by several reasons:

1, HDMI video card does not have a built-in sound card, this is seen in the Nvidia chipset graphics card, with this video card, you need to spdif the motherboard sound card output and graphics card SPDIF input (General video card will provide this wire, there will be wiring diagram), otherwise, HDMI video card does not have audio input, There is no natural audio signal in the HDMI signal, as in the following two images:

　　SPDIF input Location Map of the video card

　　SPDIF output Location Map of the motherboard (Blue 11 mark)

2, if you use a DVI to the HDMI cable to do computer connection to the TV, you will also need a separate audio cable from the computer's audio output to the audio input of the TV (HDMI channel external audio input interface, some TVs do not have this interface, you can not use this way to achieve computer connection TV, You may need to switch to an HDMI video card)

3, for the use of HDMI graphics with built-in sound card (more than the ATI Chipset graphics card), this time the computer will have at least two sound cards (onboard sound card and video card built-in sound), you need to select the audio properties of the control Panel of the HDMI video card as the "Default sound card", You may also want to select the player's default sound card as the built-in sound card for this HDMI card, such as:

　　Third, expand screen vs copy screen?

Using the HDMI cable to achieve computer connection with the TV and the use of VGA cable to achieve computer connection TV has a very big difference: there is no only one HDMI output (no other output) of the video card, so basically everyone will immediately encounter the graphics card dual output Setup problem, is in the graphics card two output on the two display devices, A monitor and a TV, how to set the video driver to make the two display devices work properly. (Of course, if the computer you're using to connect to the TV doesn't have to pick up a monitor, you don't have to worry about it.)

　　1, screen expansion---TV watching movies, computer at the same time internet, play games

Realization function: TV as the second monitor of computer, extend Windows desktop to TV, realize high-definition movie on TV or online TV

, the computer can also perform other operations, the picture on the TV and the display screen completely independent, non-interference.

Setup method: After the computer starts, on the Windows desktop, right-click, select Properties, in the Open "Display Properties" of the "settings" page to see the connected display, but it is not configured before it is not output (low-light). Select the display you want to configure with your mouse (for example), and click "Extend Windows desktop to this monitor" to extend a portion of Windows desktop to the TV, there is no status bar on the TV (extended Display), no shortcut buttons, and only one desktop wallpaper, you can Most applications run on the extended screen with the mouse, feeling no different from the home screen. If you click Use this device as the primary monitor, you can choose which one to use as the main display between the monitor and the TV.

After setting up, the monitor and TV are lit, one screen is the same as the original, the other screen (expansion screen) there is no status bar, no shortcut buttons, only a desktop wallpaper, the mouse can be moved back and forth between two screens, as shown in.

At this point, you can use the left mouse button to hold the Open Task window (press and hold the form's blue title bar), move the mouse can be the window from a

On the screen, drag to another screen (note: The maximized window cannot be moved), such as. By moving the program to the extended screen, you can maximize the operation, which can be understood as the expansion of the home screen, part of the main screen, so almost all programs can be run on the expansion screen, there is no limit (note: You may need to install the original video card driver).

You can drag some program icons to the extension screen to run, or you can install the Extended screen management software (ULTRAMON) for easy operation. (with UltraMon, after a simple setup, you can make the extension screen look almost the same as the main screen, for example, there are shortcut buttons and taskbar, so when you just face an extended screen, such as when you sit in the living room sofa, you can easily mobilize all the resources on the computer, For more information on how to set up the extended screen management software for easy operation, please refer to other articles on this website.

　　2. Screen copy----use all functions of computer on TV

With graphics-driven replication, the signal from the video card is transmitted all the way to the TV and copied to the monitor, and the display on the monitor is exactly the same on the TV, so that all the functions of the computer can be used on the TV.

　　Setup method: After the computer starts, set the display resolution to the resolution supported by both the monitor and the TV, such as 1024x768.

After the resolution is set, the graphics driver settings are made to enable screen copy output. If you do not have a video driver installed, please install it first. The following describes how ATI graphics cards and Nvidia graphics cards are set up separately.

Click the nvidia icon on the Windows status bar to select the Nvidia Control Panel (for example) in the pop-up menu. In the task list on the left side of the control Panel, select Set multiple monitors, in the right half of the 1 select the NView display mode you want to use, select the same on two monitors (copy mode (C)), then click the Apply button in the lower right corner. The screen copy function is implemented. This way, the screen on the TV and monitor is exactly the same, so you can operate the computer on the TV.

ATI graphics card screen copy settings (graphics: Radeon HD4650 Graphics driver version: 8.54 080902a CCC version: 2008.0902): Double-click the ATI icon on the Windows status bar to open Catalyst Control Center, Select the monitor manager in the Graphics Settings section. If you have selected the mode of desktop extension, right-click on desktop 2 and choose Copy Desktop 1: Digital panel from the pop-up menu to make sure you can replicate your TV and monitor.

　　Four, why TV view switch or switch signal source, the computer display properties can not find TV, resulting in some settings lost?

When the computer is connected to the TV via the HDMI cable, when switching the TV or switching the HDMI input of the TV, sometimes the video card can not find the device and stop the output, when the TV is switched on or switched back to the HDMI input, the TV is not displayed. This problem is a headache, the main reason is that the digital output of PC graphics (HDMI/DVI) has a more annoying feature-Plug and Play, when connected to the TV device, the Plug and Play function of the graphics card is sometimes a hassle, whether it is the DVI or HDMI output, has a detection insertion device, and read the device display properties, such as the best resolution, support resolution and so on. When the TV is switched off or HDMI input, the TV will automatically disconnect the computer, although the HDMI cable attached to the computer and TV, but in the computer graphics card, the TV display device is unplugged, so the video card will stop the output. Similarly, when the TV is turned off or switched on without viewing the HDMI input of the video card, when the computer is started, the computer card will not find the TV, thus judging the TV is not connected, in the display properties can not see the TV. After understanding the cause of the problem, the solution is: Follow the strict boot sequence, first turn on the TV---Adjust the HDMI channel----and then open the computer.

How to connect your TV with HDMi