Microsoft’s patent aims to improve accuracy of Surface Pen

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Surface Pen

The latest patent application suggests that the next Surface
Pen to come out of Redmond may have better accuracy features
that would make it easier for users to draw on the screens of
their 2-in-1s.

Although Microsoft’s Surface Pen is one of the finest stylus
out there, some users have experienced accuracy problems
with the device. A new patent application from Microsoft aims
to improve the accuracy of the Surface Pen by determining a
motion vector for an active stylus in relation to the touch
sensor.

First spotted by us, the patent titled ‘Active stylus motion
vector’ was filed by Microsoft in May 2017 and just published by USPTO on February 12,
2019.

In the background section of the patent application, Microsoft
says that touch-enabled devices receive input from a
stylus and to facilitate interaction, the 2-in-1 device
will locate the stylus by scanning its sensing area for its
proximity.

Surface Pen patent
Image Courtesy: USPTO

The patent details a method to improve the operations where the
device is supposed to locate an active stylus over a 2-in-1
device. The method determines the motion vector of the active
stylus wherein a portion of the touch sensor may be selected
based on the motion vector and operated differently than other
portions of the touch sensor.

“To this end, examples are described herein that enable the
touch sensor to determine a motion vector of the stylus to
predict the future location of the stylus. With the predicted
future location, the touch sensor may configure operation
(e.g., preemptively) to listen for stylus transmissions in the
predicted location,” Microsoft said in the filing.

“Relative to an instant measurement of stylus location, the
motion vector may enhance stylus locating accuracy and
listening operations by accounting for stylus motion not
captured by the instant measurement,” Microsoft explains how
the accuracy of the stylus could be improved.

Surface Pen accuracy patent
Image Courtesy: USPTO

Microsoft’s Surface lineup has become popular among graphic
artists and designers, thanks to the integration between the
Surface Pen, Surface devices and Windows 10.

It is worth noting that the patent filings are not indicative
of upcoming release, however, the accuracy improvement for
Surface Pen is something that Microsoft may have in its plans.



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