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Cellphones Displays Hardware Technology

Get Ready For Under-Display Smartphone Cameras (arstechnica.com) 73

An anonymous reader quotes a report from Ars Technica: With in-screen fingerprint readers quickly becoming a regular feature of flagship phones, manufacturers are starting to wonder about what other things they can stick under the display. In the past day, both Oppo and Xiaomi have taken to social media to show off the latest development: under-display front-facing cameras. Forget camera notches, hole punch displays, and complicated pop-up mechanisms; the under-display camera enables all-screen smartphone designs with no moving parts.

Under-display cameras will work a lot like optical under-display fingerprint readers -- a CMOS chip will be placed under a transparent section of the display, and it will peer through the pixels to see the outside world. For an optical fingerprint reader, the image capturing setup only needs to be of high enough quality to identify the ridges and valleys of your fingertip. For selfies and video chats, there will be much higher demands for image quality, and we wonder what obstructing the camera view with pixels will do to the image quality. Both Xiaomi and Oppo shared videos of the in-display cameras working, but the videos are too low quality to make any kind of image quality determinations. When you aren't taking a picture, the display pixels work normally, and when it's picture time, the pixels around the camera turn off, allowing the camera to see through the display. Xiaomi detailed some of its implementation, saying it was using a "special low-reflective glass" for better image quality.

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Get Ready For Under-Display Smartphone Cameras

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  • Best of all... (Score:5, Insightful)

    by AmiMoJo ( 196126 ) on Tuesday June 04, 2019 @08:11AM (#58706590) Homepage Journal

    Best of you can't put a sticker over the front facing camera anymore.

    Personally I like the motorized pop-up cameras. I use the front facing one so little there is very little chance of it being damaged.

    • Comment removed (Score:5, Insightful)

      by account_deleted ( 4530225 ) on Tuesday June 04, 2019 @08:29AM (#58706668)
      Comment removed based on user account deletion
    • Yeah... I was actually looking forward to motorized cameras because

      a) I don't use a selfie cam enough to care
      and
      b) I can see when an app calls for it. It kinds of weirds me out that so many apps have camera access on my phone.

    • by TuringTest ( 533084 ) on Tuesday June 04, 2019 @09:38AM (#58706930) Journal

      Best of you can't put a sticker over the front facing camera anymore.

      Next thing, they'll be adding this to our telescreens - er... I mean TVs.

      • Next thing, they'll be adding this to our telescreens - er... I mean TVs.

        (Adjusts tinfoil hat...) Maybe the already are...

        Stop picking your nose!

      • Best of you can't put a sticker over the front facing camera anymore.

        Next thing, they'll be adding this to our telescreens - er... I mean TVs

        An alternative technology would be more effective for that. With camera-behind-screen it's both easily disabled and obtrusive. With camera-as-part-of-screen, with the backfeed in the DRM reverse channel, it's pretty close to impossible to defeat.

        This was invented some time back: In addition to the illuminating pixels, the screen has photodiode pixels, with a mini-le

    • Yeah, that's the solution I like best too. I also use the front camera so little that the mechanical mechanism would likely outlast the phone's useful life
  • by QuietLagoon ( 813062 ) on Tuesday June 04, 2019 @08:11AM (#58706592)
    So, you have no idea when the camera is on and sending images back to the mothership. You can't put black electrical tape over the camera because that would cover part of the display. Why is this "feature' such a great idea? Or is it being done just because they can.
    • To make the black-tape brigade happier, the manufacturers will fit coverable 'decoy cameras' in the conventional place but continue to surveil through the screen.

      It's the the illusion of privacy. Just like a plethora of Facebook 'privacy settings' that claim to switch things on and off.
    • Why is this "feature' such a great idea? Or is it being done just because they can.

      it's being done because a bunch of idiots called tech writers (who actually know very little about tech other than how it looks and feels) have decided that bezel-less displays are cool. These are the same idiots who panned plastic bodies ("doesn't feel premium"), resulting in high-end phones having metal bodies (which dent when you drop them) sometimes with glass backs (yet another part which can shatter) which most people

  • by Anonymous Coward

    Have you got something to hide?

    • by Anonymous Coward

      We all do. If we don't, we get arrested for public nudity.

  • by Anonymous Coward

    Turning off pixels on the screen around the camera, great. So that full-screen video chat app is now going to have a big circle or rectangle right in my incoming video, destroying what I see.

    Fucking retarded is what this is.

  • https://en.wikipedia.org/wiki/... [wikipedia.org]

    I wonder if a modification of the confocal approach could be applied to reduce the out of focus plane?
  • Comment removed (Score:3, Insightful)

    by account_deleted ( 4530225 ) on Tuesday June 04, 2019 @09:10AM (#58706832)
    Comment removed based on user account deletion
    • 3) Video calls (Score:4, Insightful)

      by Anubis350 ( 772791 ) on Tuesday June 04, 2019 @09:33AM (#58706918)
      3) Video calls. I use this for both work and friends/family all the time. Also, the front facing camera has plenty of other general uses, like acting as a mirror you can keep in your pocket (useful to a lot of people, and not just as a vanity thing, looking ok for a job interview/etc is important for example).
    • by Shotgun ( 30919 ) on Tuesday June 04, 2019 @10:42AM (#58707336)

      There are 2 "functions" of a front-facing camera:
      1. Selfies. I think that the fad is over plus only a small amount of people do that.

      I know it is stereotypical to say that people reading /. don't have girlfriends, but do you have any non-technical friends AT ALL? If by "small amount" you mean "majority of people on Earth", which after all is a small amount when considering the size of the universe, then I will agree with you.

      • Girlfriends I understand, and they are also quite likely to be near you and not need video. I'm more interested in that people here don't seem to have mothers.

    • Comment removed based on user account deletion
  • What I want is a lens that stays clean after I have to smudge it because of the fingerprint reader.
  • by nospam007 ( 722110 ) * on Tuesday June 04, 2019 @09:50AM (#58707006)

    Then where do I put the Chiquita sticker to lock out the NSA, the Chinese and the Russians?

  • by Anonymous Coward

    > manufacturers are starting to wonder about what other things they can stick under the display

    seriously? well, actually not surprised. these clowns are talented at making shit noone want.

    here's an idea for "stuff under the display", ya know, inside the friggin phone ...

    NO front camera
    headphone jack
    external sdcard
    dual SIM
    replaceable battery

    like we used to have for >$500+, back b4 ya lost your minds!

  • Just bought a new battery for my phone. I will keep it until it falls apart and no replacement parts can be found or someone comes up with a real innovation. For example, a battery which lasts under load for 24 hours. Other sensors, radar, night sight, smells, radioactivity, electric and magnetic field scanners, heat, unbreakability.

  • Comment removed based on user account deletion
  • The notch was pathetic from day one.

"Virtual" means never knowing where your next byte is coming from.

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