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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."
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.
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.
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
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.