The screen curtain does now dim the back light when it is activated. In some of the earlier IOS releases, when you put on the screen curtain, it did not adjust the brightness of the back light, all it did was make the screen black. In very simple terms, you can think of these screens as a bright light that shines through a transparent layer. By adjusting the colours and transparency of this layer, the screen makes the various images it needs to. It is the back light which really uses up the battery. So in earlier IOS releases where the back light wasn't dimmed with the screen curtain there wasn't any benefit to the battery of using the screen curtain. Now when the screen curtain is enabled, the back light is dimmed to its minimum setting. Another consequence to this is that now if you intend to leave screen curtain on all the time, there is now no need to go into the screen brightness settings and turn it down and switch off auto brightness. This is all effectively done for you by just turning on screen curtain and if you do have to show something to a sighted person, they won't have to strain to see it.
I certainly don't think that I would get anything like an extra 5 hours myself and I can't see how having the screen curtain on should make any difference to whether some apps work Garth www.iblindtech.com Follow me on twitter @BlindTechMusing or not. On 16/07/2012, at 8:27 PM, Brett wrote: > Hi, > > This isn't correct, screen curtain definitely saves battery. I get about five > more hours of battery life with the screen curtain on. Test it for yourself > and you will see the difference. It obviously makes some difference since > apps like digetise don't work when the screen curtain is on. > > Sent from Brett's iPhone > > On 16/07/2012, at 8:15 PM, "Raul A. Gallegos" <r...@raulgallegos.com> wrote: > >> Hi, actually you don't save battery by using the screen curtain. The screen >> is still lit. Just because the text and background are all one color doesn't >> mean it offers any battery savings. Hope this helps. >> >> -- >> Raul A. Gallegos >> Too much of a good thing can be wonderful. - Mae West >> Home Page: http://raulgallegos.com >> Twitter: https://twitter.com/rau47 >> Facebook: http://facebook.com/rau47 >> >> >> On 7/15/2012 10:10 PM, Les Kriegler wrote: >>> Screen Curtain being on means that the screen is darkened so that text on >>> the screen is invisible. It should result in battery savings, and this is >>> why I use it. It does make sense that if VO was removed from memory, the >>> screen would automatically go on. >>> >>> Les >>> On Jul 15, 2012, at 9:43 PM, Kramlinger, Keith G., M.D. wrote: >>> >>>> What is Screen Curtain? >>>> >>>> -----Original Message----- >>>> From: viphone@googlegroups.com [mailto:viphone@googlegroups.com] On >>>> Behalf Of Corey Michael Cook >>>> Sent: Sunday, July 15, 2012 8:06 PM >>>> To: viphone@googlegroups.com >>>> Subject: RE: VoiceOver and Screen Behavior >>>> >>>> >>>> Right screen curtain is a feature of VO so it would be disabled >>>> if >>>> VO is turned off. >>>> >>>> >>>> Corey Cook >>>> Facebook: >>>> corey.coo...@gmail.com >>>> Twitter: >>>> @blindcellguy >>>> >>>> >>>> -----Original Message----- >>>> From: viphone@googlegroups.com [mailto:viphone@googlegroups.com] On >>>> Behalf >>>> Of Les Kriegler >>>> Sent: Sunday, July 15, 2012 6:47 PM >>>> To: viphone@googlegroups.com >>>> Subject: VoiceOver and Screen Behavior >>>> >>>> Since I now use Fleksy regularly and obviously must turn off VO, I >>>> discovered that when VO is turned off, the Screen Curtain is turned off >>>> as >>>> well. I understand that the Fleksy team is working on a fix for this, >>>> but >>>> wanted you to know that if you like to keep your Screen Curtain On. you >>>> will >>>> need to turn it back on with the three finger triple click gesture. >>>> >>>> Les >>>> >>>> -- >>>> You received this message because you are subscribed to the "VIPhone" >>>> Google >>>> Group. >>>> To search the VIPhone public archive, visit >>>> http://www.mail-archive.com/viphone@googlegroups.com/. >>>> To post to this group, send email to viphone@googlegroups.com. >>>> To unsubscribe from this group, send email to >>>> viphone+unsubscr...@googlegroups.com. >>>> For more options, visit this group at >>>> http://groups.google.com/group/viphone?hl=en. >>>> >>>> -- >>>> You received this message because you are subscribed to the "VIPhone" >>>> Google Group. >>>> To search the VIPhone public archive, visit >>>> http://www.mail-archive.com/viphone@googlegroups.com/. >>>> To post to this group, send email to viphone@googlegroups.com. >>>> To unsubscribe from this group, send email to >>>> viphone+unsubscr...@googlegroups.com. >>>> For more options, visit this group at >>>> http://groups.google.com/group/viphone?hl=en. >>>> >>>> -- >>>> You received this message because you are subscribed to the "VIPhone" >>>> Google Group. >>>> To search the VIPhone public archive, visit >>>> http://www.mail-archive.com/viphone@googlegroups.com/. >>>> To post to this group, send email to viphone@googlegroups.com. >>>> To unsubscribe from this group, send email to >>>> viphone+unsubscr...@googlegroups.com. >>>> For more options, visit this group at >>>> http://groups.google.com/group/viphone?hl=en. >>> >> >> -- >> You received this message because you are subscribed to the "VIPhone" Google >> Group. >> To search the VIPhone public archive, visit >> http://www.mail-archive.com/viphone@googlegroups.com/. >> To post to this group, send email to viphone@googlegroups.com. >> To unsubscribe from this group, send email to >> viphone+unsubscr...@googlegroups.com. >> For more options, visit this group at >> http://groups.google.com/group/viphone?hl=en. > > -- > You received this message because you are subscribed to the "VIPhone" Google > Group. > To search the VIPhone public archive, visit > http://www.mail-archive.com/viphone@googlegroups.com/. > To post to this group, send email to viphone@googlegroups.com. > To unsubscribe from this group, send email to > viphone+unsubscr...@googlegroups.com. > For more options, visit this group at > http://groups.google.com/group/viphone?hl=en. -- You received this message because you are subscribed to the "VIPhone" Google Group. To search the VIPhone public archive, visit http://www.mail-archive.com/viphone@googlegroups.com/. To post to this group, send email to viphone@googlegroups.com. To unsubscribe from this group, send email to viphone+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/viphone?hl=en.
