Sony Xperia Z4 Tablet

Although the Xperia Z4 Tablet was announced as far back as MWC, it wasn’t until recently that the enhanced noise rejection of the touchscreen was really shown off. At first it wasn’t exactly clear how this was accomplished, but it turns out that this is a Qualcomm technology at heart, namely improveTouch. For those that are unfamiliar with this technology I've attached a video from Qualcomm demonstrating the technology below. At a high level, improveTouch uses a Snapdragon SoC to effectively replace aspects of external touchscreen controllers. This is done by moving touch processing from the touch screen controller to the SoC’s application processor. By doing this, it’s possible to enable faster sampling rates/lower touch latency for the digitizer and more advanced noise rejection algorithms...

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