High end cable manufacturer Lindy Electronics have announced a fibre optic HDMI extender that can send an HDMI signal up to 300m using a single SC duplex multimode fibre optic cable. Continue reading “Lindy HDMI Extender Sends HDMI Over 300m”
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Older LCD and Plasma TVs Stuck with SD
Owners of some older plasma and LCD TVs without HDMI inputs are finding themselves stuck with watching Standard Definition (SD) pictures from HD sources even though they have high resolution panels. Early panels supported High Definition TV HDTV via the component video inputs but many HD devices including Sky HD boxes have now dropped the component video output only leaving HDMI. HDMI to component video converters are available but the HDMI content protection system HDCP forces the component video output down to 480i resolution.
Connecting a PC to TV
The best way to connect a PC to a TV depends on the connectors you have available, we will start by discussing older TVs that don’t have digital inputs such as HDMI or DVI. CRT TVs tend to have scart sockets as the primary connection, to connect a PC to a scart the PC or laptop must have a TV output connector, this will normally be a mini din connector with 4 or 7 pins. The image below shows a typical PC video card, the connector on the left is a DVI connector, the centre is the TV output connector and the connector on the right is the VGA connector.
If you have a PC with the TV output connector you can connect this using an s-video cable and scart adapter into the TV scart. The s-video cable only has 4 pins but this is compatible with 7 pin s-video sockets on video cards. A couple of points to note, the TV output will only provide the picture and not sound and the scart you connect to on the TV must support s-video, if you connect to a scart that does not support s-video you will get a black and white picture. If your TV scart supports s-video you should be able to select it via the menus, it may also be referred to as Y/C.
To get audio as well a connection is required from the PC sound card to the scart adapter red and white connectors, a typical soundcard is shown above, a connection is required from the green socket to the scart adapter using a 2x phono to 3.5mm jack cable. Once the connections are made you just need to enable the TV ouput in the video card driver settings and make sure the resolution is correct for the TV.
If your TV is an LCD or Plasma it will most likely have a VGA, DVI or HDMI connector. If both your TV and PC or laptop have HDMI connectors then a single HDMI cable is all that is required to connect it to the TV to give video and audio. If both have VGA or DVI then again a VGA cable or DVI Cable can be used but neither will give audio, you will need to make a separate audio connection with a 3.5mm jack to jack cable or 3.5mm jack to 2x phono cable. Other connection options include DVI to HDMI using a DVI to HDMI cable, this also requires a separate audio cable as DVI doesn’t support sound.
HDMI Splitters
An HDMI splitter is a device that splits an HDMI signal to multiple displays, sometimes called an HDMI Distribution Amplifer. Suppose you wanted to watch Sky HD on 2 TVs, an HDMI splitter could be used to duplicate the input and give 2 identical outputs. The number of outputs provided is referred to as ports or ways, you may see the item described as a 2 port or 2 way if it has 2 outputs. A typical 2 port splitter shown below will cost around £40.
