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Old 10-01-2006, 09:51 PM   #31
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I've designed 3 embedded linux systems and none took this long to boot, with slower CPU's. If they have the MSystem's tuned down then it's costing us battery. The faster we can load and go, the sooner the system can get back to sleep.
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Old 10-05-2006, 12:49 PM   #32
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Remember that iLiad boot is strange in the sense that they first boot into a bash script, and then this script boots into init.
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Old 10-05-2006, 01:10 PM   #33
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And I never ever did that (boot into bash).

Nor can I really think of why I would, now that you mention it...
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Old 10-09-2006, 05:52 AM   #34
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The guys int the Sony Forum are having trouble measuring their battery-life. The Device seems to refuse to consume any energy...:-)

Since the Sony Reader is also a Linux device, battery-life in these regions should be possible for the Iliad as well.

Let's hope iRex devote some resources to working on this soon...
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Old 10-09-2006, 06:18 AM   #35
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Oh yes, please. I would soooooo dig that

Its quite funny to see the Reader people have trouble measureing their battery life. Thats a problem i would like to have.
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Old 10-09-2006, 06:50 AM   #36
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How about we collect what we already know:
  • both devices use the same display technology (E Ink)
  • the iLiad screen is bigger (8.1") than the Sony Reader screen (6") -> Q: is battery negatively influenced by a bigger E Ink screen?
  • the iLiad offers 16 gray levels, the Sony only 4 -> Q: is the battery negatively influenced by the number of gray levels?
  • both devices run on Linux -> Q: kernel versions?, loaded modules?
  • the iLiad has WiFi 802.11b -> Q: in power-savings mode, can it be completely turned off?
  • the iLiad uses a WaCom Penabled touchscreen ->Q: in power-savings mode, can it be completely turned off? By how much does it affect battery life?
  • the iLiad uses a Li-ion 1100mAh battery -> Q: what is the capacity of the battery used by the Sony?
  • the CPU of the iLiad is an Intel XScale 400MHz PXA 255 -> Q: in power-savings mode, CPU could be throttled down to 200MHz, is this already working with the latest software? What CPU does the Sony use?
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Old 10-09-2006, 07:42 AM   #37
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Old 10-09-2006, 07:55 AM   #38
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Quote:
Originally Posted by CommanderROR
Since the Sony Reader is also a Linux device, battery-life in these regions should be possible for the Iliad as well.
They may be both Linux devices but there the simularities end... The Illiad has much more bolted onto it (wifi, stylus, touch sensitive) and has a much larger screen... Comparing the Illiad and the Sony Reader is like comparing Apples and Oranges...

Quote:
Originally Posted by CommanderROR
Let's hope iRex devote some resources to working on this soon...
As far I recall they always have done and are due to be improving this with the next release...
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Old 10-09-2006, 11:05 AM   #39
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And I guess the Sony uses a Sony battery. This may reduce its overall lifetime ;-)
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Old 10-09-2006, 11:13 AM   #40
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Quote:
Originally Posted by DrBibber
And I guess the Sony uses a Sony battery. This may reduce its overall lifetime ;-)
Whose... yours or that of the Sony Reader?
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Old 10-09-2006, 11:56 AM   #41
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@jaed

The similarities don't end there. All the additional features of the Iliad can be turned off when you don't use them, so the only factor is the CPU and the larger screen. the CPU should not be a major problem since it will also be in idle mode most of the time if you use the Iliad like a Sony Reader (e.g. just for reading).
The larger screen is an unknown factor, just like the additional gray-levels. Apart from that, you can compare the devices very well.
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Old 10-09-2006, 12:04 PM   #42
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Quote:
Originally Posted by CommanderROR
the CPU should not be a major problem since it will also be in idle mode most of the time if you use the Iliad like a Sony Reader (e.g. just for reading).
You can find the technical papers for the CPU here:
http://www.intel.com/design/pca/prod...5/techdocs.htm
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Old 10-09-2006, 12:05 PM   #43
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But isn't it too hypothetically? Do we know the capacity of the iLiads and the Sony battery to have a comparison? Maybe one of the both devices is better in energy saving and loses this benefit because of low dimensioned batteries.
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Old 10-09-2006, 12:22 PM   #44
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Quote:
Originally Posted by CommanderROR
@jaed

The similarities don't end there. All the additional features of the Iliad can be turned off when you don't use them, so the only factor is the CPU and the larger screen. the CPU should not be a major problem since it will also be in idle mode most of the time if you use the Iliad like a Sony Reader (e.g. just for reading).
The larger screen is an unknown factor, just like the additional gray-levels. Apart from that, you can compare the devices very well.
So... If you turn off the additional hardware, and make assumptions for a larger screen and a different sized battery, and a slightly different cpu, its a similar device...?

Last edited by jęd; 10-09-2006 at 12:26 PM.
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Old 10-09-2006, 12:26 PM   #45
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Well in all fairness, the two devices are similar in the way that they claim to be e-readers. And from e-readers - especially with E Ink technology - one should expect a decent battery life.
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