Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!sun-barr!lll-winken!taco!hobbes.catt.ncsu.edu!kdarling From: kdarling@hobbes.catt.ncsu.edu (Kevin Darling) Newsgroups: comp.sys.amiga.advocacy Subject: Re: CDTV, CD-I, DCTV, etc Message-ID: <1991Apr16.073417.21126@ncsu.edu> Date: 16 Apr 91 07:34:17 GMT References: <1991Apr16.071344.20589@ncsu.edu> Sender: news@ncsu.edu (USENET News System) Organization: North Carolina State University Lines: 20 kdarling@hobbes.catt.ncsu.edu (Kevin Darling) writes: >Let's take the simplest example: a fullscreen American flag on a black field. >CD-I would only use a _few hundred bytes of memory_ to perfectly display it. >On a normal (read: Amiga) display, you will always need to take up & move at >least _16K_ because the video hardware demands each pixel be explicitly there! Actually, I shouldn't have used an American flag as an example here, because most of it is regular enough that either CD-I or CDTV could use repeated normal video lines (via a copper list) to cut down on storage space... and of course someone is bound to pick nits :-) :-). Like I'm doing now. Therefore, pick another flag. Or a fairly fancy background scene (and/or foreground animation) of anything you can imagine. Perhaps clouds building up in the sky, or a very large running cartoon animal, or whatever. For non-photographic data, color RLE can be very fast coming off disc, and/or a win on memory usage in many cases... definitely can be cheaper on the cpu. I'm sure graphics programmers understand the possibilities. thanks - kev