Touch controller promises faster response time, superior resolution

The device runs on a 32bit ARM Cortex microprocessor core containing Zytronic's touch detection and processing firmware. Developed for use with touchscreens that have diagonals greater than 55in, it runs off a standard 12V supply and connects with the p-cap touch sensor via several flex tails or FPCBs. The advanced touch detection algorithms within the ZXY300's firmware double the number of touch detecting channels that can be supported to 256, compared with 128 for the standard ZXY200 multi-touch controller. As a result, Zytronic says the capacitive sensing matrix within the touch sensor can be much denser, which in turn makes it possible to determine the positions of individual simultaneous touch events to far greater precision, even on the largest MPCT-based touchscreens of 84in. The ZXY300 can support up to 40 simultaneous touch points being resolved with touch separation of <10mm between each point (less than the width of a fingertip). What's more, the company says the extra data needed to capture this can still be gathered, processed and output to the host PC in less than 10ms.