It's never clear how a company plans on implementing a given patent, but Sony's patent application for a haptic touchscreen composed of "tactile pixels" lists former Sony Computer Entertainment chief Phil Harrison as the inventor and makes several references to potential use in "a game device" and to "game events," so it's a safe bet that it was at least developed with the PSP in mind. The patent app describes a sophisticated haptic feedback system that goes well beyond the basic rumble of today's device -- the pixels themselves are able to move up and down between two positions, providing direct feedback to user actions. That's certainly an interesting idea, but like all patent news, we're not going to hold out hope for it to surface in a consumer device anytime soon -- but we're willing to be surprised, you know?

[Via PSP Fanboy]

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Sony applies for "tactile pixel" haptic touchscreen patent