The Naked Scientists

The Naked Scientists Forum

Author Topic: what is the most efficient, VGA/VGA cable or HDMI/VGA cable?  (Read 9596 times)

Offline myriam

  • Sr. Member
  • ****
  • Posts: 163
  • Many things are still like the Terre incognita
    • View Profile
    • powerful point

hello there

If I have a notebook without a VGA output how can I relate it to a datashow what cable I have to use to conserve the best quality of the image 
or is  there any other solution to this?

thank you


 

Offline myriam

  • Sr. Member
  • ****
  • Posts: 163
  • Many things are still like the Terre incognita
    • View Profile
    • powerful point
what is the most efficient, VGA/VGA cable or HDMI/VGA cable?
« Reply #1 on: 18/05/2010 13:45:20 »
any suggestions ::)
 

Offline BenV

  • Neilep Level Member
  • ******
  • Posts: 1503
    • View Profile
what is the most efficient, VGA/VGA cable or HDMI/VGA cable?
« Reply #2 on: 18/05/2010 16:34:30 »
What output options do you have?  What input options does the projector have?
 

Offline myriam

  • Sr. Member
  • ****
  • Posts: 163
  • Many things are still like the Terre incognita
    • View Profile
    • powerful point
what is the most efficient, VGA/VGA cable or HDMI/VGA cable?
« Reply #3 on: 18/05/2010 19:17:24 »
What output options do you have?  What input options does the projector have?

it has a VGA output 
« Last Edit: 18/05/2010 19:45:29 by myriam »
 

Offline LeeE

  • Neilep Level Member
  • ******
  • Posts: 3382
    • View Profile
    • Spatial
what is the most efficient, VGA/VGA cable or HDMI/VGA cable?
« Reply #4 on: 18/05/2010 19:50:34 »
What output options do you have?  What input options does the projector have?

it has an VGA output 

The output from the projector will be the light it projects.  If it has a VGA input then it will need an analogue input signal.

What outputs do you have on your notebook?  The likely outputs, apart from VGA, which you've already said you haven't got, are DVI-A (analogue), DVI-D (digital), DVI-I (analogue or digital) and HDMI (digital).  If you have a DVI-A/I output then you may only need a converter cable but if you only have DVI-D or HDMI then you'll need a converter to convert the digital signal from your notebook into an analogue signal for the projector.
 

Offline myriam

  • Sr. Member
  • ****
  • Posts: 163
  • Many things are still like the Terre incognita
    • View Profile
    • powerful point
what is the most efficient, VGA/VGA cable or HDMI/VGA cable?
« Reply #5 on: 18/05/2010 22:17:55 »
What output options do you have?  What input options does the projector have?

it has an VGA output 

The output from the projector will be the light it projects.  If it has a VGA input then it will need an analogue input signal.

What outputs do you have on your notebook?  The likely outputs, apart from VGA, which you've already said you haven't got, are DVI-A (analogue), DVI-D (digital), DVI-I (analogue or digital) and HDMI (digital).  If you have a DVI-A/I output then you may only need a converter cable but if you only have DVI-D or HDMI then you'll need a converter to convert the digital signal from your notebook into an analogue signal for the projector.

Thank you LeeE, I only have HDMI output on my notebook
by using a converter cable, does the quality of the image remain good enough?
 

Offline LeeE

  • Neilep Level Member
  • ******
  • Posts: 3382
    • View Profile
    • Spatial
what is the most efficient, VGA/VGA cable or HDMI/VGA cable?
« Reply #6 on: 19/05/2010 13:27:58 »
If you only have HDMI output from your notebook then you will need more than just a converter cable.  A converter cable just has different connectors on each end but they won't be able to convert a digital signal into an analogue one.

After a little bit of digging around, it seems that converting from HDMI digital to analogue isn't practical, partly because of license issues tied to the HDMI technology.
 

Offline imatfaal

  • Neilep Level Member
  • ******
  • Posts: 2787
  • rouge moderator
    • View Profile
what is the most efficient, VGA/VGA cable or HDMI/VGA cable?
« Reply #7 on: 19/05/2010 13:48:45 »
If you have only HDMI output on your notebook (i didnt realise things had changed so much) then short of finding a projector with a HDMI input perhaps you could look for a digital tv in the place you are giving your presentation.  Flatscreen tvs from the last few years tend to have at least one HDMI input port.  It is possible you could find a video-recording device (hard-disc, dvd, blue ray etc) that has a variety of input sources (ie incl HDMI) and a variety of output formats (ie incl VGA) but this seems a stretch.  personally I would copy presentation onto usb drives and borrow a laptop that has the presentation programme you need and a vga output. 
 

Offline myriam

  • Sr. Member
  • ****
  • Posts: 163
  • Many things are still like the Terre incognita
    • View Profile
    • powerful point
what is the most efficient, VGA/VGA cable or HDMI/VGA cable?
« Reply #8 on: 19/05/2010 14:22:59 »
Thank you guys for these clarifications

 

Offline syhprum

  • Neilep Level Member
  • ******
  • Posts: 3822
  • Thanked: 19 times
    • View Profile
what is the most efficient, VGA/VGA cable or HDMI/VGA cable?
« Reply #9 on: 22/05/2010 20:34:45 »
It is suprising the high cost of HDMI Scart converters, I have recently purchased a DVD with an HDMI output for £28.00 and a Freeview box with HDMI output for £25.00 so the electronics cost little but no Scart to HDMI converters are available for less than £60.00.   
 

Offline Geezer

  • Neilep Level Member
  • ******
  • Posts: 8328
  • "Vive la résistance!"
    • View Profile
what is the most efficient, VGA/VGA cable or HDMI/VGA cable?
« Reply #10 on: 23/05/2010 03:00:39 »
Myriam,

If you don't mind telling us, what's the make a model number of your notebook? I'd like to take a look at the spec.
 

Offline RD

  • Neilep Level Member
  • ******
  • Posts: 8132
  • Thanked: 53 times
    • View Profile
what is the most efficient, VGA/VGA cable or HDMI/VGA cable?
« Reply #11 on: 23/05/2010 05:44:59 »
At first glance this looks like a possible solution if your computer really doesn't have VGA output ...

Quote
USB2.0 to VGA Adaptor ... £49.99


http://www.maplin.co.uk/Module.aspx?ModuleNo=218645&C=SO&U=strat15


An apparently identical, but cheaper, product here, with customer reviews

« Last Edit: 23/05/2010 06:01:32 by RD »
 

Offline myriam

  • Sr. Member
  • ****
  • Posts: 163
  • Many things are still like the Terre incognita
    • View Profile
    • powerful point
what is the most efficient, VGA/VGA cable or HDMI/VGA cable?
« Reply #12 on: 24/05/2010 21:31:22 »
Myriam,

If you don't mind telling us, what's the make a model number of your notebook? I'd like to take a look at the spec.

yeah, it is a  netbook Dell Inspiron 11z CULV
 

Offline RD

  • Neilep Level Member
  • ******
  • Posts: 8132
  • Thanked: 53 times
    • View Profile
what is the most efficient, VGA/VGA cable or HDMI/VGA cable?
« Reply #13 on: 24/05/2010 21:35:36 »
Myriam,

If you don't mind telling us, what's the make a model number of your notebook? I'd like to take a look at the spec.

yeah, it is a  netbook Dell Inspiron 11z CULV

Looks like you're right about no VGA output ...
Quote
The 11z includes the standard three USB ports, flash memory reader, headphone/microphone jacks,
 Ethernet, WiFi, and an HDMI output.

Unlike some of the other options, there's no VGA port.
http://www.anandtech.com/show/2932/3
« Last Edit: 24/05/2010 21:40:56 by RD »
 

Offline myriam

  • Sr. Member
  • ****
  • Posts: 163
  • Many things are still like the Terre incognita
    • View Profile
    • powerful point
what is the most efficient, VGA/VGA cable or HDMI/VGA cable?
« Reply #14 on: 25/05/2010 22:31:56 »
hey there I found 2 solutions

-HDMI/DVI --> HDMI/HDMI-->DVI/VGA

-USB/RS232   if the datashow has an RS232 input


 

Offline LeeE

  • Neilep Level Member
  • ******
  • Posts: 3382
    • View Profile
    • Spatial
what is the most efficient, VGA/VGA cable or HDMI/VGA cable?
« Reply #15 on: 26/05/2010 09:15:39 »
RS232 is a serial I/O interface and I doubt it would have the bandwidth for video.
 

The Naked Scientists Forum

what is the most efficient, VGA/VGA cable or HDMI/VGA cable?
« Reply #15 on: 26/05/2010 09:15:39 »

 

SMF 2.0.10 | SMF © 2015, Simple Machines
SMFAds for Free Forums