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Article #1169

Re: TV resolution?

#1169
From: Michael Sierchio
Date: Wed, 18 Nov 1992 18:16
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In article <1992Nov17.171855.1@ualr.edu> djlewis@ualr.edu writes:
>>>
>>>>What is the resolution of normal NTSC TVs?
>>>
>>>    NTSC is an analog format with a total of 525 lines.
>>>    However only 485 lines
>>> are active.  The most universal is about 648x485 pixels;
>> 
>> Most video digitizers I've come across seem to prefer to give you 640*480
>> resolution

Bzzt! to all of you.  Resolution doesn't mean number of scan lines.  It means
how many lines can be resolved in the horizontal and vertical directions.

This is determined by that radial line test pattern of converging black
lines on a white board.

My recollection is hazy, but I believe that the best performance (a good
camera connected directly to a monitor) yields about 500 lines of vertical
resolution, and 600 lines of horizontal resolution.

-- 
+--------------------------------------------------------------------------+
|  Michael Sierchio                          1563 Solano Avenue, Suite 123 |
|  kudzu@netcom.com                                Berkeley, CA 94707-2116 |
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References: <Bxn4Jt.K2p@rahul.net> <1992Nov17.113157.12225@waikato.ac.nz> <1992Nov17.171855.1@ualr.edu>

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From: kudzu@netcom.com (Michael Sierchio)
Subject: Re: TV resolution?
Message-ID: <1992Nov18.181633.26950@netcom.com>
Organization: True Love, and Home-Grown Tomatoes
References: <Bxn4Jt.K2p@rahul.net> <1992Nov17.113157.12225@waikato.ac.nz> <1992Nov17.171855.1@ualr.edu>
Date: Wed, 18 Nov 1992 18:16:33 GMT
Lines: 26