If B&W Ultra Power Saving is so efficient, why not use as ALWAYS ON SCREEN feature?

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BoneXDA

Senior Member
Oct 9, 2012
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1,232
If B&W Ultra Power Saving is so efficient, why not use as ALWAYS ON SCREEN feature?

Samsung introduced Ultra Power Saving mode, that's besides the usual turn-some-radios-off, sets TouchWiz into a low-demand black and white mode, most likely undervolting the SoC in the process. Sammy promises an extra day of standby in this mode.

galaxys5-17-640x426.jpg


So how about using the B&W mode for always-on display notifications?

While it's no e-ink display like the back of the YotaPhone, AMOLED can light up subpixels individually, and lower resolution displaying of non-graphic white content with 90% of all subpixels off and SoC at very low voltage could make sense. Especially if the new pixel arrangement is RGBW (I don't think it is for the S5), cause it would mean that of the 4 million sub-pixels, only a small % of 1 million white pixels would be on... we don't need full screen notifications, just part of the screen...

With some further SW tweak, the phone could recognize when is it in pocket (like Moto X) and when on table, so it should only display stuff then the phone is in horizontal position or when you move it etc. With AMOLED advertised for efficiency, wonder why Sammy haven't attempted something like this yet, maybe add an extra low-power chip to handle this little task (and always-on listening).

Thoughts? Potential? Possibilities?
 
Last edited:

faiyo

Senior Member
Jul 11, 2011
361
97
I think the sview cover is probably a better way of doing it. Its so easy to go from low power preview to full functionality
 

dandroid13

Senior Member
Dec 19, 2010
3,652
1,910
Porto Alegre
Samsung introduced Ultra Power Saving mode, that's besides the usual turn-some-radios-off, sets TouchWiz into a low-demand black and white mode, most likely undervolting the SoC in the process. Sammy promises an extra day of standby in this mode.

galaxys5-17-640x426.jpg


So how about using the B&W mode for always-on display notifications?

While it's no e-ink display like the back of the YotaPhone, AMOLED can light up subpixels individually, and lower resolution displaying of non-graphic white content with 90% of all subpixels off and SoC at very low voltage could make sense. Especially if the new pixel arrangement is RGBW (I don't think it is for the S5), cause it would mean that of the 4 million sub-pixels, only a small % of 1 million white pixels would be on... we don't need full screen notifications, just part of the screen...

With some further SW tweak, the phone could recognize when is it in pocket (like Moto X) and when on table, so it should only display stuff then the phone is in horizontal position or when you move it etc. With AMOLED advertised for efficiency, wonder why Sammy haven't attempted something like this yet, maybe add an extra low-power chip to handle this little task (and always-on listening).

Thoughts? Potential? Possibilities?


You can enable B&W with the normal Power Saving, see @ 18:28:

 

@rbiter

Senior Member
Dec 4, 2011
5,141
1,241
Samsung introduced Ultra Power Saving mode, that's besides the usual turn-some-radios-off, sets TouchWiz into a low-demand black and white mode, most likely undervolting the SoC in the process. Sammy promises an extra day of standby in this mode.

galaxys5-17-640x426.jpg


So how about using the B&W mode for always-on display notifications?

While it's no e-ink display like the back of the YotaPhone, AMOLED can light up subpixels individually, and lower resolution displaying of non-graphic white content with 90% of all subpixels off and SoC at very low voltage could make sense. Especially if the new pixel arrangement is RGBW (I don't think it is for the S5), cause it would mean that of the 4 million sub-pixels, only a small % of 1 million white pixels would be on... we don't need full screen notifications, just part of the screen...

With some further SW tweak, the phone could recognize when is it in pocket (like Moto X) and when on table, so it should only display stuff then the phone is in horizontal position or when you move it etc. With AMOLED advertised for efficiency, wonder why Sammy haven't attempted something like this yet, maybe add an extra low-power chip to handle this little task (and always-on listening).

Thoughts? Potential? Possibilities?

S800+ already has co processors and DSP they could utilize. Apparently, aosp is more important.

sent from my sm-9005.
 

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