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Apple Files Patent For "Active Stylus" For Use With Capacitive Touchscreens

MojoKid writes "Apple may be looking to improve upon the stylus as we know it today. The Cupertino company filed a patent application with the USPTO for what it calls an 'Active Stylus,' which can be used on capacitive touch sensor panels like those found on the iPhone, iPad, and iPod Touch devices. 'Unlike conventional styluses which work passively by blocking electric field lines between the drive and sense electrodes of a capacitive touch sensor panel, the styluses disclosed in the various embodiments of this disclosure can either act as a drive electrode to create an electric field between the drive electrode and the sense lines of a mutual capacitive touch sensor panel, or as a sense electrode for sensing capacitively coupled signals from one or more stimulated drive rows and columns of the touch sensor panel or both.' According to Apple, active styluses allow for more accurate input without driving up cost."

13 of 112 comments (clear)

  1. I remember those by Anonymous Coward · · Score: 3, Interesting

    When my grandparents were alive they had a box with one of those.
    It was made for teaching people traffic signs. You put an overlay on it and used the active stylus to touch one of the alternatives and the box would indicate green or red light depending on your answer.

  2. now with Auto-Loss (tm)! by swschrad · · Score: 5, Funny

    (6951a) Application also defines a new stylus feature, in which the apparatus for holding stylus will either randomly release the stylus, or actively eject the stylus, depending on how important it would be in selection of one of the next features of software (see 976 d,e,g,zz et al) that may come up. Application claims trademark on the definition of this feature, Auto-Loss (tm), which is filed under separate registration for protection.

    --
    if this is supposed to be a new economy, how come they still want my old fashioned money?
  3. Re:Call me dumb... by Reverand+Dave · · Score: 4, Insightful

    Not so much want it old is new again as much as what was already invented has been slightly modified and swallowed by the patent glutton that is apple. Let the lawsuits begin!

    --
    I got here through a series of tubes
  4. First Touchscreen Laptops, Now This? by CanHasDIY · · Score: 5, Informative

    I would say that St. Jobs must be rotating furiously in his grave by now, but I think the fact that this "innovation" is yet another example of Apple patenting stuff that already exists is probably enough to ease his restless spirit...

    --
    An enigma, wrapped in a riddle, shrouded in bacon and cheese
  5. cost not going up by P-niiice · · Score: 3, Insightful

    "According to Apple, active styluses allow for more accurate input without driving up cost."

    Yes, cost, but not price. That's going to be driven up quite nicely, thank you.

  6. No by oGMo · · Score: 4, Informative

    The Galaxy Note series use Wacom technology which, according to Wikipedia, was patented and is now expired. This is separate from the touchscreen, and provides stuff like pressure, tilt, and multi-device support (though I'm not sure if the latter is supported on Samsung devices). In short, it works really well, it's well-proven, and it's not patentable.

    --

    Don't think of it as a flame---it's more like an argument that does 3d6 fire damage

  7. Re:Call me dumb... by alen · · Score: 5, Informative

    this is for capacitive screens

    you seem to not get the concept of patents. you can't patent an idea of a stylus but a specific implementation of it. in this case using a different type of stylus on a specific type of screen

    yes we have had these before, but this one is different. just like we've had 100 years of the combustion engine but car makers still get patents every year because they find new ways to squeeze more efficiency out of them.

  8. No. by Anonymous Coward · · Score: 5, Funny

    Did those things have an Apple logo on them?

    Nope.

    Therefore, they are NOT the same.

    Were the light pens called "iPen" or "iGridPad"?

    Nope.

    Therefore, they are NOT the same.

    Were those things stole....created with the divine direction of St. Steve Jobs?

    Nope.

    It's NOT the same!

    It's new and different.

  9. Do those require power? by Improv · · Score: 3, Interesting

    One of the nice things about the Wacom tablets (typing this while looking into a 21" Wacom Cintiq) is that the stylus doesn't require any power. A quick glance at the patent application above has me seeing "power source" in the pen. I'm not that enthused.

    I realise my Cintiq is damned expensive so the criticism above might not apply fully, but I don't feel I'm losing out on accuracy with my non-"Active Stylus" device.

    --
    For every problem, there is at least one solution that is simple, neat, and wrong.
    1. Re:Do those require power? by FrankSchwab · · Score: 3, Insightful

      A company I used to work for lost a patent battle with Wacom about those self-powered pens. We ended up having to use powered pens to avoid their patent.

      The whole field of digitizers - which grew up in the '70s and reached it's peak in the '80s and is used now in devices like the Smart board (http://smarttech.com/smartboard) - explored active stylii extensively. RF, Capacitive, and Resistive digitizers were all invented, explored, patented in those eras. It would be very surprising if this invention doesn't duplicate patents that issued thirty years ago.

      Innovation, indeed.

      --
      And the worms ate into his brain.
  10. Re:Call me dumb... by hawguy · · Score: 5, Funny

    This actually reminds me of a decade old piece of military equipment- think of a ruggedized, 2" thick tablet with a 3" screen. The 'neat' thing with the stylus for this device is that it doesn't actually have to touch the screen to work. Note: It's completely insensitive to fingers and such, you have to use the stylus, but that might be some sort of sensitivity setting.

    Plenty of prior art, I think.

    It reminds me of a centuries old piece of equipment called a "Pencil". They were heavily used while I was in school before being replaced by newer, sleeker technology. It was pressure sensitive, and though it would work on a multidue of surfaces, it worked best only on a specially formulated screen that we called "paper". Different styluses could be used for different effects (colors, darkness/thickness of lines, etc), but most people used the plain old #2. By inverting the stylus, it had some limited "undo" capability, but there were some ghosting artifacts left behind and excessive undo use could lead to screen damage.

  11. Re:Call me dumb... by AmiMoJo · · Score: 3, Interesting

    So it is either too specific to be worth anything (since there are already lots of capacitative styli available for phones and tablets) or the patent office granted yet another overly broad patent on something that was invented years ago.

    Either way we lose.

    --
    const int one = 65536; (Silvermoon, Texture.cs)
    SJW, n: "Someone I don't like, and by the way I'm a fuckwit" - AC
  12. Re:Call me dumb... by Shagg · · Score: 3, Interesting

    you can't patent an idea

    That's the theory, but it doesn't seem to be enforced much.

    --
    Unix is user friendly, it's just selective about who its friends are.