Touch-screen controllers track gloved fingers
To simplify the interaction with portable electronic systems and smartphones in a variety of conditions, Cypress Semiconductor Corporation recently announced new features for the TrueTouch touch-screen controller family. The Gen4 family enables accurate navigation of capacitive touch screens even with thick gloves on, along with new functionality including passive stylus support to capture handwriting and signatures accurately. In addition, proximity detection senses an object approaching the touch screen and powers down the display before contact to avoid accidental touches. The Gen4 TMA467 controller tracks up to 10 fingers in thin gloves and 2 fingers with thicker gloves, such as those used by skiers. The Gen4 TMA468 controller supports passive styli with tips as small as 2 mm, enabling touch screens to capture characters as small as 7 mm. This capability is important for writing in languages that require enhanced character recognition for reliable text input, such as Chinese and Japanese. The Gen4 family can control capacitive touch screens up to 10.1 inches.
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