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Post by markallen on Nov 3, 2005 16:21:49 GMT
Not so much a technical question about Scrivener, but about iBooks and Powerbooks in general. I'm not exactly sure how the LCD screens work, but if you have Scrivener in fullscreen with a black (or very dark) background color, are you saving on battery life because the screen is emitting less light (and therefore using less energy, therefore battery)??
Any electrical engineers out there?
Thx
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amberv
Junior Member
Posts: 99
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Post by amberv on Nov 3, 2005 16:33:12 GMT
I am thinking it does not make a difference. Each pixel is not wired to emit light, rather it is wired to filter light, and then there is one big cold cathode fluorescent tube to backlight the array of filters. So when a pixel is black, it is just filtering all of the light that would be shining through anyway. The current differential per pixel based on filter pattern cannot be that substantial in comparison to the cost of lighting the whole thing.
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Post by markallen on Nov 3, 2005 16:46:32 GMT
That makes a lot of sense. Its the reason why the apple logo (on the lid) is a consistent brightness, now matter what the screen is doing. The only way to control the brightness of the logo is to literally turn up and down the brightness.
However I asked, because when I was using scrivener last night, I had been in fullscreen for a half hour, and then when I returned to the normal view, I checked on the battery. It said 61% with four hours something remaining. After a few minutes of being in the more normal view, it had returned to 2 hours something.
May have been a fluke situation though. But that is why I asked.
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plb
New Member
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Post by plb on Nov 16, 2005 18:04:26 GMT
I'm just shooting in the dark, but it would seem that while full-text mode wouldn't result in power savings from the screen there might be some from the processing being done? Less intensive computing going on for the display?
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Post by KB on Nov 16, 2005 18:55:56 GMT
Sorry, I wasn't trying to be rude in not answering this one - it was just that amberv already gave a good answer.  I haven't done any performance tests to compare the modes as yet, but it is unlikely that there would be much difference, as when you work in full screen mode the same things are still getting updated as when you are typing in normal mode - the word count is still being calculated, etc. In fact, in full screen mode there is an extra something going on, too - the text is being temporarily coloured as you type. My guess is that the reason Mark's battery indicator changed quickly is just that the menu is hidden in full screen mode. So once the menu was restored in normal mode, it probably just took a couple of minutes before it got around to updating itself (or calculating the change) - that sometimes happens on my iBook. |
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I haven't done any performance tests to compare the modes as yet, but it is unlikely that there would be much difference, as when you work in full screen mode the same things are still getting updated as when you are typing in normal mode - the word count is still being calculated, etc. In fact, in full screen mode there is an extra something going on, too - the text is being temporarily coloured as you type.