Patent ID: 11966533
Assignee: MICROSOFT TECHNOLOGY LICENSING, LLC
Field: Computer technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 14:
15. A computer system comprising a device for use with a touch surface digitizer,
the device comprising:
a sensor configured to receive uplink signals emitted by a grid of antennas in the touch surface digitizer, and
a controller configured to detect the uplink signals via the sensor,
wherein the controller is further configured to determine a speed of the computer system based on a detected sequence of the uplink signals as received at the sensor from at least one junction of the grid of antennas relative to a spatial pattern of the uplink signals as emitted across the grid of antennas, wherein the controller is configured to match the detected sequence of uplink signals to a sequence stored in a local memory of the device, wherein the sequence corresponds to a speed of the device, and

the touch surface digitizer comprising:
the grid of antennas,
a signal generator configured to generate the uplink signals, and
electronic circuitry arranged to connect each of the antennas in the grid to the signal generator to provide the uplink signals, wherein the touch surface digitizer is configured such that the uplink signals are detected as different at any two neighbouring junctions of the grid by the device.