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  • VGA to HDMI Upscaler for Risc PC

    From Kevin Melling@21:1/5 to All on Mon Apr 18 13:07:09 2022
    Hi,

    Does anyone have a recommendation for a VGA to HDMI upscaler please for
    the basic output of a RISC PC (RPC700 without viewfinder)

    I've bought a basic one which gives a stable image but about an inch of
    the right-hand side is missing even when there are thick vertical black
    borders (letterboxing).

    A TV with a VGA socket is giving a good picture so nothing wrong with the
    RPC (I presume). I haven't tried the upscaler with a different VGA feed.

    This model basically fits in an extended VGA plug, with sockets for HDMI
    out, micro USB power and audio in (added to the HDMI, but haven't tried
    that as my monitor doesn't support audio). I've seen others which are more
    like small set-top-boxes so may have more eletronics inside?

    The monitor is 4K (don't know if that's a problem) with no VGA input.

    Maybe I could try working on a Monitor Definition File.. Maybe some has
    already :-) ?

    Many thanks,
    Kevin Melling

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From druck@21:1/5 to Kevin Melling on Mon Apr 18 19:00:05 2022
    On 18/04/2022 14:07, Kevin Melling wrote:
    Does anyone have a recommendation for a VGA to HDMI upscaler please for
    the basic output of a RISC PC (RPC700 without viewfinder)

    I've bought a basic one which gives a stable image but about an inch of
    the right-hand side is missing even when there are thick vertical black borders (letterboxing).

    [Snip]

    Maybe I could try working on a Monitor Definition File.. Maybe some has already :-) ?

    You probably need an MDF with as close to VESA standard timings as
    possible. Some MDFs you might find online describe this as relaxed timings.

    ---druck

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Kevin Melling@21:1/5 to druck on Mon Apr 18 20:03:37 2022
    In message <t3k8v7$4si$1@dont-email.me>
    druck <news@druck.org.uk> wrote:

    On 18/04/2022 14:07, Kevin Melling wrote:
    Does anyone have a recommendation for a VGA to HDMI upscaler please for
    the basic output of a RISC PC (RPC700 without viewfinder)

    I've bought a basic one which gives a stable image but about an inch of
    the right-hand side is missing even when there are thick vertical black
    borders (letterboxing).

    [Snip]

    Maybe I could try working on a Monitor Definition File.. Maybe some has
    already :-) ?

    You probably need an MDF with as close to VESA standard timings as
    possible. Some MDFs you might find online describe this as relaxed timings.

    Thanks druck,

    I'll try this at some point and think I may've found some related
    discussions on the ROOL forums, but it might be a bit of time till I try.
    The RISC PC setup has taken a bit of a back seat with WFH I'm afraid :-)

    Many thanks

    --
    Kevin Melling

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Dave Plowman (News)@21:1/5 to Kevin Melling on Tue Apr 19 15:09:07 2022
    Best of luck. Converting analogue to HDMI seems fraught with problems when
    I've tried it here. And seems to depend on what the HDMI input is on.



    In article <f6e213db59.kmelling@kmelling.aaug.net>,
    Kevin Melling <kmelling@aaug.net> wrote:
    Hi,

    Does anyone have a recommendation for a VGA to HDMI upscaler please for
    the basic output of a RISC PC (RPC700 without viewfinder)

    I've bought a basic one which gives a stable image but about an inch of
    the right-hand side is missing even when there are thick vertical black borders (letterboxing).

    A TV with a VGA socket is giving a good picture so nothing wrong with the
    RPC (I presume). I haven't tried the upscaler with a different VGA feed.

    This model basically fits in an extended VGA plug, with sockets for HDMI
    out, micro USB power and audio in (added to the HDMI, but haven't tried
    that as my monitor doesn't support audio). I've seen others which are more like small set-top-boxes so may have more eletronics inside?

    The monitor is 4K (don't know if that's a problem) with no VGA input.

    Maybe I could try working on a Monitor Definition File.. Maybe some has already :-) ?

    Many thanks,
    Kevin Melling

    --
    *Frustration is trying to find your glasses without your glasses.

    Dave Plowman dave@davenoise.co.uk London SW
    To e-mail, change noise into sound.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Kevin Melling@21:1/5 to druck on Sun Apr 24 09:17:38 2022
    In message <t3k8v7$4si$1@dont-email.me>
    druck <news@druck.org.uk> wrote:

    On 18/04/2022 14:07, Kevin Melling wrote:
    Does anyone have a recommendation for a VGA to HDMI upscaler please for
    the basic output of a RISC PC (RPC700 without viewfinder)

    I've bought a basic one which gives a stable image but about an inch of
    the right-hand side is missing even when there are thick vertical black
    borders (letterboxing).

    [Snip]

    Maybe I could try working on a Monitor Definition File.. Maybe some has
    already :-) ?

    You probably need an MDF with as close to VESA standard timings as
    possible. Some MDFs you might find online describe this as relaxed timings.

    In fact I found a direcotry of MDFs on the RISC PC itself. Not sure where
    I got them from. First I tried was labelled "Samsung" which worked first
    time at least in 1024*768. I feel the 4K Dell monitor is being somewhat underused here :-).

    Can share some MDFs if anyone wants or suggests where to put them.

    Many thanks

    --
    Kevin Melling

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From druck@21:1/5 to Kevin Melling on Sun Apr 24 14:35:14 2022
    On 24/04/2022 09:17, Kevin Melling wrote:
    In message <t3k8v7$4si$1@dont-email.me>
    druck <news@druck.org.uk> wrote:

    On 18/04/2022 14:07, Kevin Melling wrote:
    Does anyone have a recommendation for a VGA to HDMI upscaler please for
    the basic output of a RISC PC (RPC700 without viewfinder)

    You probably need an MDF with as close to VESA standard timings as
    possible. Some MDFs you might find online describe this as relaxed timings.

    In fact I found a direcotry of MDFs on the RISC PC itself. Not sure where
    I got them from. First I tried was labelled "Samsung" which worked first
    time at least in 1024*768.

    Monitors can lock on to a wide range of different modes and are fairly forgiving of the various timing constrains (although LCDs not as much as
    the old CRTs). However the very cheap VGA to HDMI adaptors need a signal
    which is very close to, if not bang on the VESA standard timings, so you
    can't get away with any old MDF. Tools such as !MakeModes can show if
    timings are standard or not.

    I feel the 4K Dell monitor is being somewhat
    underused here :-).

    The Risc PC wont be able to do 1920x1080 which scales 2:1 a 4K monitor,
    but generating a 1280x720 mode would be better than 1024x768 as its
    scales 3:1 and is 16:9 instead of 4:3.

    ---druck

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)