LONDON With touchscreen technology becoming a major differentiator in the competitive smartphones and PMP markets, Avago Technologies has come up with an interface that the company suggests will do away with the problematic ghost points displayed by many of the screens.
The mutual capacitance controller is designed to track up to four simultaneous touch points.
Avago (Singapore) says the patented controller is already shipping to "one of the world's leading portable media player manufacturers," and that several handset manufacturers are also evaluating the technology, though the company would not reveal the identity of any of these potential users.
Key features of the interface include 500dpi resolution for jitter-free tracking; hover rejection and palm detection to prevent false responses; and 13-inches per second tracking speed for faster navigation, especially in games.
Avago adds that to simplify the assembly process, the device has built-in self test for panel indium tin oxide (ITO) breakage 'open/shorts', which means no application test fixture is necessary, resulting in scalability and quick turnaround of sensor panel prototypes and efficient manufacturing.
The company is also making available complete development kits that include software and sensor panel design guides.
Commenting on the announcement, Khin-Mien Chong, general manager of Avago's navigation interface division said this "helps to reaffirm our position as a major supplier of navigation interfaces to all the major smartphone and mobile communications handset manufacturers."
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