How to select TV chip with better flicker filtering

Hi,

I don't know whether this is a suitable place for my question or not.
I just thought there are more experienced people here.

It is hard to find TV chips that can output text without much
flickering. Is it there any parameters that I can follow so that I can
find a TV chip with better flicker filtering? Or can you recommend
some chips?

thanks in advance.

litchie

litchie wrote:
> Hi,
>
> I don't know whether this is a suitable place for my question or not.
> I just thought there are more experienced people here.
>
> It is hard to find TV chips that can output text without much
> flickering. Is it there any parameters that I can follow so that I can
> find a TV chip with better flicker filtering? Or can you recommend
> some chips?
>
> thanks in advance.
>
> litchie

The Conexant and integrated chips you find on GF8's and HD2900's are the
best you're going to get in a consumer graphics card. Flicker is a
natural consequence of the downsampling that must occur to fit the
entire screen onto your TV.

If you turn off overscan you'll notice a significant portion of the
screen is missing, but everything appears very sharp (even via
composite), but then you have to use a virtual desktop to see
everything. Generally this looks good for DVD's and other media with
slight bordering, but not usable for general desktop applications.

If you want a better TV-out, either go with HDTV output to a display
that doesn't do overscan, or look into a dedicated scan converter
(several hundred bucks). Scan converters are used professionally for TV
shows and commercial displays. They generally can make even a 1024x760
(XGA) or 800x600 (SVGA) screen look somewhat readable without too much
distortion.