Date: Mon, 23 Nov 2009 21:38:18 +0000 From: spellberg_robert <emailrob@emailrob.com> To: Brett Glass <brett@lariat.net>, fbsd_chat <freebsd-chat@freebsd.org> Subject: Re: lcd monitor manufacturer recommendation request Message-ID: <4B0B00CA.3030103@emailrob.com> References: <200911200921.nAK9LKpf063202@lurza.secnetix.de> <4B06DD70.8030308@emailrob.com> <1AE59099C6D80E41BEB64A1768AFB4EA30ED5BAF@msxmbxnsprd18.acct.upmchs.net> <4B07451E.8020907@emailrob.com> <866393vekq.fsf@ds4.des.no> <200911212014.NAA02010@lariat.net>
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i thank you, sir. Brett Glass wrote: > At 12:54 PM 11/21/2009, Dag-Erling Smørgrav wrote: > >> A CRT has an electrom beam that sweeps across the screen left to right >> and top to bottom, and the horizontal and vertical sync frequencies >> control how fast the beam moves. An LCD panel does not have an electron >> beam; it has discrete, individually adressable pixels. If you insist on >> hooking it up to an analog port, it will have to convert the analog >> signal to a digital signal in order to display it, and you will get >> sampling artifacts, aliasing etc. I don't care how good you are at >> writing modelines; you will never come up with one that looks better >> than what you will get with a digital connection. > > > Unfortunately, some monitors with digital interfaces are not compatible > with some LCD displays, even though the sockets and cables look like > they match up. For example, I recently tried to hook an Asus "Eee Box", > which has an HDMI connector, up to a Samsung LCD display using a digital > cable. Couldn't get it to work at all, no matter how I adjusted the > settings on both. But when I used an analog adapter and cable, it worked > on the first try at maximum resolution, with (fortunately) few or no > noticeable artifacts. Analog isn't ideal, but it's a good fallback. > > --Brett Glass this post has nothing to do with my request for the identity of manufacturers with an earned reputation for reliability. however, it was so nice to learn that there exists at least one person who recognizes that just because it's "digital" doesn't mean it's "better". digital = non_linear analog, while using much_more_than_shannon_requires band_width. rob
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