Patent ID: 8723816

Claim:
A touch pad pointing device comprising: a mousing surface defining a closed path for a user pointer; a first optical mouse sensor having an imaging region through which the closed path passes that is oriented in a first direction, the first optical mouse sensor configured to detect presence and motion of the user pointer at the imaging region in the first direction and generate a first motion signal indicative of the detected motion; a second optical mouse sensor having an imaging region through which the closed path passes that is oriented in a second, different, direction, the second optical mouse sensor configured to detect presence and motion of the user pointer at the imaging region in the second direction and generate a second motion signal indicative of the detected motion; and a detector provided to detect direction of motion of a user pointer along the closed path and to detect speed of motion along the closed path on the basis of relative timing of the first and second motion signals output from the first optical mouse sensor oriented in the first direction and the second optical mouse sensor oriented in the second direction.