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Amiga Hires(640x400 Interlaced) [message #293784] Wed, 03 December 1986 21:17 Go to next message
Anonymous
Karma:
Originally posted by: min@jplpro.UUCP (kun chung)
Article-I.D.: jplpro.383
Posted: Wed Dec  3 21:17:29 1986
Date-Received: Sat, 6-Dec-86 00:00:04 EST
Reply-To: min@jplpro.UUCP (min-kun chung)
Organization: Jet Propulsion Laboratory, Pasadena, CA
Lines: 12

I was very disappoionted with the flickering of the 640x400 interlaced hires
mode.  Is there any easy/inexpensive solution for this ?  I understand that
this is so because the video output is inherently interlaced.  However, is it
possible to remove/lessen the flickering using a good/special color monitor ?

Thanks for your responses.
-- 
Min-Kun Chung
Jet Propulsion Laboratory
Uucp: {sdcrdcf,bellcore,ihnp4}!psivax!jplpro!min
Uucp: jplgodo!chas2!jplpro!min
Arpa: ...jplpro!min@cit-vax.ARPA
Re: Amiga Hires(640x400 Interlaced) [message #293811 is a reply to message #293784] Sat, 06 December 1986 02:59 Go to previous messageGo to next message
dillon is currently offline  dillon
Messages: 81
Registered: November 1985
Karma: 0
Member
Article-I.D.: cory.8612060759.AA13518
Posted: Sat Dec  6 02:59:16 1986
Date-Received: Sun, 7-Dec-86 04:13:56 EST
Sender: kjd@ucbvax.BERKELEY.EDU
Organization: University of California at Berkeley
Lines: 23


 > I was very disappoionted with the flickering of the 640x400 interlaced hires
 > mode.  Is there any easy/inexpensive solution for this ?  I understand that
 > this is so because the video output is inherently interlaced.  However, is it
 > possible to remove/lessen the flickering using a good/special color monitor ?
 > 
 > Thanks for your responses.

	The video output is not inherently interlace.

	There was a huge discussion of this on the net a while back the
general points being:

	-On a normal monitor, the lower the brightness, the less the flicker

	-I have found a dark (almost black) green background with a 
	 white-blue forground best.  But even so, I went back to using
	 a non-interlace workbench to save my eyes from long term strain.

	If you want to get rid of the flicker entirely, you have to by a
	long-persistance phosphor monitor, which can get expensive.

				-Matt
Re: Amiga Hires(640x400 Interlaced) [message #293852 is a reply to message #293784] Sun, 07 December 1986 19:54 Go to previous messageGo to next message
Anonymous
Karma:
Originally posted by: ee162faq@sdcc7.ucsd.EDU (Here/There at once)
Article-I.D.: sdcc7.836
Posted: Sun Dec  7 19:54:51 1986
Date-Received: Mon, 8-Dec-86 20:59:22 EST
References: <383@jplpro.UUCP>
Reply-To: ee162faq@sdcc7.ucsd.edu.UUCP (Here/There at once)
Organization: U.C. San Diego, Academic Computer Center
Lines: 7

Two simple solutions:
  1. Wear circularly polarized sunglasses.
  2. Buy a "                 " filter for your monitor.


John
7OHN
Re: Amiga Hires(640x400 Interlaced) [message #293918 is a reply to message #293784] Wed, 10 December 1986 05:58 Go to previous message
carolyn is currently offline  carolyn
Messages: 25
Registered: September 2013
Karma: 0
Junior Member
Article-I.D.: cbmvax.1083
Posted: Wed Dec 10 05:58:00 1986
Date-Received: Wed, 10-Dec-86 11:47:37 EST
References: <383@jplpro.UUCP>
Sender: news@cbmvax.cbm.UUCP
Reply-To: carolyn@cbmvax.UUCP (Carolyn Scheppner)
Organization: Commodore Technology, West Chester, PA
Lines: 35

In article <383@jplpro.UUCP> min@jplpro.UUCP (min-kun chung) writes:
 > I was very disappoionted with the flickering of the 640x400 interlaced hires
 > mode.  Is there any easy/inexpensive solution for this ?  I understand that
 > this is so because the video output is inherently interlaced.  However, is it
 > possible to remove/lessen the flickering using a good/special color monitor ?


Some ways to reduce flicker:

1. Reduce light/dark contrast between displayed colors by adjusting
   colors and/or monitor.  Try colors with similar luminance but
   different hues.

2. Use a font designed for interlace.  There are some floating around.
   (on this net I believe)

3. If you are writing interlace software, avoid thin horizontal
   contrasting lines.

4. Sony analog RGB monitors like the KV1311CR seem to have slightly
   longer persistence than ours.  If you can find one, they're nice.
   Analog, digital, composite AND it's a TV.   $500

5. If you want to spend MORE bucks, get a REAL high persistence
   monitor, try Electrohome ECM1301 HR Color, or Mitsubishi
   C-3479LPAG-WC.

6. Wear sunglasses.

-- 
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
Carolyn Scheppner -- CBM   >>Amiga Technical Support<<
                     UUCP  ...{allegra,caip,ihnp4,seismo}!cbmvax!carolyn 
                     PHONE 215-431-9180
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