h a l f b a k e r y
Recalculations place it at 0.4999.
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Generate a small static charge at the tip of a stylus to improve accuracy
Essentially allowing to decrease tip diameter of contact with
the capacitive touch screen.
That static charge can be a permanent thing. You could have opposite charges locked into place at each end of the stylus --just flip stylus around and interact with the touch-screen two different ways. [Vernon, Dec 06 2013]
Jot Script Pixelpoint
[xaviergisz, Mar 04 2015]
Electret stylus for touch-sensor device [xaviergisz, Mar 04 2015]
Electrostatic stylus [xaviergisz, Mar 04 2015]
This is the patent assigned to Adonit Co, the makers of the Jot Script. I didn't read it carefully, but I looked at figure 2 and that seemed fairly clear to me. [xaviergisz, Apr 09 2015]
||If you had a capacitor connected to piezoelectric
grip you might be able to control the effective nib
||the jot script. Designed for iPad but yeah, came out some
time last year. Kind of angry tbh. but shit happens
||The jot script works completely differently than your idea. The explanation of the Pixelpoint technology used by the jot script is given on their website as follows:
||How It Works
Touch screens emit a signal from the edges of the device, forming a grid across the screen. Your finger, which is conductive, connects the signals and tells the device where on the grid the contact occurred. iOS is specifically designed to ignore small points of conductivity; this eliminates accidental touches, but also forces most styluses to have large, bulky tips. Pixelpoint technology solves this problem by detecting the signal from the device and rebroadcasting it in a larger diameter thats recognized as a touch by the iPads screen.
||Also, there are a few patents that predate your idea (see links).
||I just came across those patents. The pixelpoint system is
not exactly what they suggest it is. It is primarily a palm
rejection system from what I can tell on their patent,
though it also features pressure sensitivity. The wording
'...from the device and rebroadcasting it in a larger
diameter...' think is possibly the same technology of
manipulating the charge at the tip.
||Any way, got a jot script now and am very happy with it.