A brand new document has exposed compatibility problems with model 2.0 of the Universal Stylus Initiative (USI) same old that implies older USI 1.0 styluses received’t paintings with some more recent USI 2.0 units. ChromeUnboxed got here throughout the issue whilst the use of Lenovo’s new Chromebook Duet 3, when it spotted that current styluses weren’t running with the software.
It turns out the issue with the Chromebook Duet 3 is that its display screen makes use of an in-cell design that mixes components of the show with a digitizer that handles stylus enter. ChromeUnboxed studies that it is a extra compact and cost-effective approach to provide stylus enter. But as a result of improve for the era used to be simplest presented with USI model 2.0, the Duet 3 doesn’t paintings with styluses made to paintings with USI 1.0 presentations.
USI chairman Peter Mueller showed the limitation in a commentary given to ChromeUnboxed. “Because the touch and display driver are more tightly integrated for in-cell, the touch sensing has to occur within certain timing windows in between the display being driven. It is this timing constraint that caused us to have to modify our USI spec for some in-cell panels,” he stated. “We spent many months looking at alternatives to ensure backwards compatibility, but it was not doable.”
It’s unclear if the issue have an effect on all USI 2.0-compatible presentations, nevertheless it’s an unlucky limitation that critically restricts the quantity of styluses that can be utilized with units that use in-cell tech just like the Chromebook Duet 3. At the instant, there simply aren’t that many well suited styluses available on the market, or even Lenovo’s personal USI Pen 2 doesn’t seem to be to be had but.
The scenario dangers being complicated for shoppers. Mueller says the USI is recommending that distributors take quite a lot of steps to mitigate this, nevertheless it’s unclear what number of will apply go well with. “We have requested clear documentation and marking, and also shipping with a 2.0 stylus (ideally) in order to minimize the confusion and user frustration,” Mueller tells ChromeUnboxed.
Other options of USI 2.0 come with improve for styluses that may be charged wirelessly, an expanded colour palette, and a broader vary of tilt and shading options.
The Universal Stylus Initiative is some distance from the one group to have observed its theoretically easy, common same old hit with compatibility problems. Just have a look at the complicated mess of requirements the USB Implementers Forum these days provides or the problems surrounding HDMI 2.1. Groups like those need to strike a hard stability between controlling how their applied sciences can be utilized to keep away from confusion, whilst leaving them open sufficient to inspire large adoption.
Regardless of the explanations, all of it sadly manner you’ll need to proceed to play shut consideration to the advantageous print, even if a tool supposedly helps a common same old.