Keyboard for mobile communication device

Details Keyboard for mobile communication device Keyboard for mobile communication device

G - Physics

06

F

G06F 3/042 (2006.01) H01H 13/83 (2006.01) H04W 88/02 (2009.01) G06F 15/02 (2006.01)

Patent

CA 2724723

The disclosure is directed at a method for a handheld electronic device including a keyboard have a plurality of keys, the method comprising transmitting a light through at least one light pipe housing a plurality of sensors, each of the plurality of sensors in a one--to-one relationship with a corresponding key on the keyboard, determining a key selection by comparing a measured amount of light surrounding one of the plurality of sensors with a threshold value, transmitting a signal when one of the plurality of sensors has determined that the measured amount of light exceeds the threshold value and storing the key selection in a memory of the device.

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