I have a friend that has an older tv with no hdmi connection. They have a laptop with an hdmi out. They want to hook up the tv to the laptop. They found a cable that is hdmi on one side and component on the other. I can not seem to force the video card to send a signal to the hdmi. Obviously the tv is not detected ,but i thought there was a way to force a signal to the hdmi even if it could not detect a device. The laptop is a gateway and has a nvida video card. I did try forced detection through the nvida panel ,but it still does not send a signal. Any ideas?
HDMI to Component?
- Thread starter benrybin
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Fixedathome.com
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Are you sure the cable is actually HDMI to component? As far as I am aware a cable alone will not convert a digital HDMI signal to an analogue component signal. There are converter boxes out there that claim to be able to do it though but they aren't exactly cheap.
angry_geek
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The problem you are having is due to the EDID (Extended Display Identification Data) information not being communicated back the video card. In a normal situation with a HDMI TV being hooked up through a HDMI out port on the video card, the TV sends a signal back the card telling the card its brand name, max resolution and other info. If the card doesn't receive this information, it assumes no display is connected and turns off the HDMI port.
I'm not 100% sure this will work as I've never used any kind of down conversion from HDMI. You just lose too much signal to be worth it. However, you may try this device. You hook it up with a TV with a HDMI input and a computer, allow it to sync the EDID data. Then you would plug in your weird cable and the non-HDMI TV and the computer. This device stores the EDID info from the last TV and convinces the video card there is a HDMI device at the other end. We used to use a similar device for DVI displays and media center computers years ago.
http://www.gefen.com/kvm/dproduct.jsp?prod_id=8005
Good luck.
I'm not 100% sure this will work as I've never used any kind of down conversion from HDMI. You just lose too much signal to be worth it. However, you may try this device. You hook it up with a TV with a HDMI input and a computer, allow it to sync the EDID data. Then you would plug in your weird cable and the non-HDMI TV and the computer. This device stores the EDID info from the last TV and convinces the video card there is a HDMI device at the other end. We used to use a similar device for DVI displays and media center computers years ago.
http://www.gefen.com/kvm/dproduct.jsp?prod_id=8005
Good luck.
parker.casey
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Is this a cable, or some sort of more complicated conversion box? If it's a box and cost you upwards of $70 or so... then we can work from there. If it's a cable, I have no idea how that cable must be wired, because it's not possible. My previous job was custom cable building, and I spent every day with a soldering iron, wires, and connectors, making cables by hand. One thing I'm very well aware of is that HDMI is entirely digital, and component is entirely analogue. A VGA-Component cable works, and a DVI-A to Component works ... a DVI-D to Component simply can't work because the signal is just not there. HDMI is an offshoot of DVI-D...
The long and short of it is that you can't go from HDMI to anything other than DVI-D, or another fully digital signal. I hope this has been helpful to you.
The long and short of it is that you can't go from HDMI to anything other than DVI-D, or another fully digital signal. I hope this has been helpful to you.
parker.casey
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That's pretty much what I was getting at. There is no cable that could possibly do what it is you're looking for. You need a DAC, which runs around $70.
parker.casey
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DarDar, anything that can output VGA is outputting SVIDEO, because they use the same data lines, just wired differently. SVIDEO is always VGA. DVI-D is always HDMI, DVI-A is always VGA. Component is always VGA and DVI-A. The connector on the cable doesn't mean a whole lot, it's the type of signal that does. A custom cable can never convert a digital signal into analog. It can't convert anything at all! A conversion circuit can, but not a cable.
unless i'm picking you up incorrectly you are quite wrong.
Anything outputting VGA does NOT output SVIDEO. they are two seperate standards.
http://en.wikipedia.org/wiki/Video_Graphics_Array
http://en.wikipedia.org/wiki/S-Video
DVI-D is not always HDMI. DVI-D is only a video standard and HDMI comprises (essentially) of DVI-D and an audio component plus some other HDMI info (like HDCP)
DVI-I will also work with HDMI in the same way as it includes the digital as well as the analogue
http://en.wikipedia.org/wiki/HDMI#Compatibility_with_DVI
You are correct with this one:
DVI-A is signal compatible with VGA
Component is not VGA nor DVI-A. Not providing links for this one. You can guess where they'll come from anyways!
i never mentioned anything about converting a digital to analog in a cable (or anywhere else for that matter). i do agree about the connector not meaning a whole lot one you know the signals and pinouts you can have any connector you want to come up with really.
Custom cables were needed and the display settings needed to be adjusted to allow it to use the svideo over the (normally) vga output connector. The composite video was sent over the unused pins on the vga connector.
The cable looked something like this:
http://www.dealextreme.com/details.dx/sku.10281
Anything outputting VGA does NOT output SVIDEO. they are two seperate standards.
http://en.wikipedia.org/wiki/Video_Graphics_Array
http://en.wikipedia.org/wiki/S-Video
DVI-D is not always HDMI. DVI-D is only a video standard and HDMI comprises (essentially) of DVI-D and an audio component plus some other HDMI info (like HDCP)
DVI-I will also work with HDMI in the same way as it includes the digital as well as the analogue
http://en.wikipedia.org/wiki/HDMI#Compatibility_with_DVI
You are correct with this one:
DVI-A is signal compatible with VGAComponent is not VGA nor DVI-A. Not providing links for this one. You can guess where they'll come from anyways!
i never mentioned anything about converting a digital to analog in a cable (or anywhere else for that matter). i do agree about the connector not meaning a whole lot one you know the signals and pinouts you can have any connector you want to come up with really.
Custom cables were needed and the display settings needed to be adjusted to allow it to use the svideo over the (normally) vga output connector. The composite video was sent over the unused pins on the vga connector.
The cable looked something like this:
http://www.dealextreme.com/details.dx/sku.10281
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