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On Sunday 17 July 2011 09:54:33 Grant wrote: |
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> >>>> I gave it a try but there was no change. I tried plugging the TV |
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> >>>> and |
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> >>>> computer into a power strip and also into an isolation |
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> >>>> transformer. |
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> >>>> Any other ideas? |
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> >>> |
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> >>> I still think it's a driver problem. Again: it's *physically* |
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> >>> impossible to |
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> >>> have these problems with the HDMI signal. At most you get "digital |
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> >>> noise", |
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> >>> which means some pixels get stuck or are missing. But not what you |
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> >>> get; that's just something that can't be explained. |
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> >> |
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> >> I was thinking about this. The digital HDMI signal must be converted |
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> >> into an analog signal at some point if it's being represented as light |
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> >> on a TV screen. Electrical interference generated by the computer and |
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> >> traveling up the HDMI wire should have its chance to affect things |
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> >> (i.e. create weird shadows) at that point, right? |
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> > |
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> > Not with DFPs. Those work digital even internally. I assume of course |
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> > that his HDMI TV *is* a DFP. |
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> |
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> But at some point the 1s and 0s must be converted to some sort of an |
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> analog signal if only right behind the diode. A diode must be |
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> presented with a signal in some sort of analog form in order to |
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> illuminate, right? |
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no. |
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If your tv is a standard flat panel, the sub pixels only go from on to off and |
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back. Nothing else. There is no analog signal, no transformation nothing. And |
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off means 'let light through' and on 'black' |
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If you have an led display it is pretty much the same. All the levels you see |
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are achieved with fast switching. There are no analog levels. |
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Stroller is probably correct with overscan/underscan. |
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But that has nothing to do with digital/analog conversion. |
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> Digital is just a figment of our imagination after |
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> all. |
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emm, no, seriously not. |
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-- |
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#163933 |