[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: IIe and IIc USB interface in the works. Need input.



On 2013-03-21, Steven Hirsch <snhirsch@gmail.com> wrote:
> On 03/21/2013 09:50 AM, osgeld wrote:
>>
>> not to go off topic, but I think part of that solution would be to tap into
>> the motherboard before all the signals come together and have an SVIDEO
>> type output
>>
>
> I'm not sure that will do the trick.  I don't claim to be a video expert, but 
> from what I gather the timing of an Apple II is "off" a bit from the NTSC 
> standard, resulting in odd behavior from scan converters.  Color graphics also 
> depend heavily on aliasing, which does not seem to be handled at all by any of 
> the converters I've seen.
>
> I wish someone with a lot more domain knowledge than I would produce a scan 
> converter that uses a sliding window to produce pure colors from a source that 
> normally relies on CRT monitors blending things.  None of my older 8-bit 
> machines look all that great on LCD monitors and it's surprising that no one 
> has tackled this issue head on.  There would appear to be enough owners of 
> Atari, Apple, Tandy Cocos, etc. to make this a reasonably sized market.
>
> Steve

There actually is some stuff like this but it's mostly advertised to /
focused on the home videogame console market.  All those consoles from
the 80s and 90s also tend not to look very good on modern LCD screens
for similar reasons.

The high end includes products like XRGB Mini (expensive but by far the
best), the lower end has more reasonable price requirements but lots of
contention on if they actually improve anything.

The idea is basically to replace the horrible scalar in the LCD screen
with one that does a good job externally.

-- 
Do they only stand
By ignorance, is that their happy state,
The proof of their obedience and their faith?