A89: Re: Frame Rates

To: <assembly-89@lists.ticalc.org>
Subject: A89: Re: Frame Rates
From: "Daniel Wood" <thedew@usit.net>
Date: Sat, 10 Jun 2000 05:34:59 -0500
References: <p04320401b566c7b82d7f@[207.44.41.212]> <003401bfd2ba$4ddc5aa0$b6d408d0@foxinternet.net>
Reply-To: assembly-89@lists.ticalc.org


you can tell when you play fast movement games that the refresh rate is very
low, i would be suprised if it was even 15fps.

-Dan
thedew@usit.net

----- Original Message -----
From: Aaron Peterson <happy_cobbler@bigfoot.com>
To: <assembly-89@lists.ticalc.org>
Sent: Saturday, June 10, 2000 4:00 AM
Subject: A89: Frame Rates


>
> Could somebody give me an estimate of (or if really nice: calculatre)  how
> many screens a TI-89(hw1, hw2, or 92 plus or 92) can draw per second when
> the calculator is mostly devoted to copying the images from memory to
screen
> memory (and actually being drawn)?[at mid battery]
>
> I want to know the slowest to expect (Full screen 92 (big screen
size)???).
> and the fastest (64x48, full battery 89 hw??)
>
> and the slower one of these:
> fullscreen mid batt 89 hw1 and 2.
> 160x100 on 92 mid batt (reg and plus)
>
> I am researching dithering and half toning, and I want to make pseudo code
> for a RAW bitmap and or video TO high framerate Black and White.  Main
> application: Better calculator imaging without changing formats or over
> clocking.
> High res color images with many shades of gray could look be converted to
> calculator format (multi plane) and look good.
>
> With respect to my question and the Video application:
>
> If the slowest framerate is 50fps close or above, We would very easily
have
> the apperance of 3 or more greys because we could take one origional
frame,
> and make it two black and white frames.
>
> If one of the calculators supports 80fps, we could have 8or so greys easy.
> (for some reason I think it can get this high)
>
> If the framerate is 30 fps or less we could still do some fancy dithering
to
> make it look like greyscale.
>
> If the framerate is lower than 10 we need great dithering to make it look
> decent.
>
> Of course, we can have different converting algorithms for different
> purposes.  The extremes being: Each frame shows up as a good 8 color image
> in step through mode, or closes
>
> A good multiplane considerate dithering routine would help our image
> viewing, even if not in the context of video. 8 gray pictures would still
> blink, but not as noticably because the less flashy colors would be next
to
> the flashy ones... and the dithering would make it look like it had even
> more grays!
>
> Thank you
> AP
> alpeterson@wsu.edu
>
>
>

References:

A89: Programming Problem

From: Nathaniel Gibson <ngibson@postoffice.ptd.net>

A89: Frame Rates

From: "Aaron Peterson" <happy_cobbler@bigfoot.com>