home *** CD-ROM | disk | FTP | other *** search
- Path: news.lut.fi!news
- From: petsalo@lut.fi (Jyrki Petsalo)
- Newsgroups: comp.sys.amiga.multimedia,comp.sys.amiga.misc,comp.sys.amiga.graphics,comp.sys.amiga.hardware
- Subject: Re: Amiga NTSC Line Doubling
- Date: 01 Feb 1996 22:00:56 +0200
- Organization: Lappeenranta University of Technology, Finland
- Sender: petsalo@kyy.cc.lut.fi
- Message-ID: <wltd97ylssn.fsf@kyy.cc.lut.fi>
- References: <4e5kkg$b6j@news.microsoft.com>
- <1115.6598T1401T905@mbox3.swipnet.se>
- <4em2o7$2os@news.internetmci.com> <4epcrg$9eh@nntp.interaccess.com>
- NNTP-Posting-Host: kyy.cc.lut.fi
- In-reply-to: hartigan@flowbee.interaccess.com's message of 1 Feb 1996 03:42:40
- GMT
- X-Newsreader: Gnus v5.1
-
- : On top of this, the would-be Line-Doubler would have to be able to intercept both the
- : even and odd scan lines, by predicting the change between frames for each field for
- : every frame, convert it to 30kHz, and redisplay both even and odd field scan lines as
- : a composite image. The prediction part is what separates the Faroudja between lesser
- : line-doublers.
-
- Our upcoming DblScan 4000 handles NTSC and PAL modes great. In comes 15kHz,
- out goes 30kHz. Even interlace looks great on any VGA monitor.
-
- What do you need to predict? Can you make a scandoubler in any other way
- than blazing out the incoming signal at double speed, line by line,
- field by field? If you are making composites from fields, or buffering
- the fields together, you have a flicker fixer, which kills moving video
- converting it from 50/60 Hz to 25/30 Hz. Great for A3000 with no fast
- native 30kHz modes, not good for much else.
-
- : This is a very tall order for any machine. Think of the bandwidth and processing
- : power needed. It would be quite a lucrative market if this were possible, since many
- : line-doublers are >$5000 easily and when you have a 8 foot screen in a home theater
- : that shows those glaring scan lines. But I believe Faroudja line-quadrupler was just
- : released...
-
- Line-quadrupler? Don't you need 60kHz monitor/projector/whatever for
- that?
-
- -JP
-
- ----------------------------------------------------------------------------
- Delfina DSP. Discover the Sound of Power.
-
-
-
-
-