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US 2019/0377431 A1Published application
Stylus with a control
AssigneeBeechrock Limited
InventorOwen Drumm
Life of this patent
Estimating the term…
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AssigneeBeechrock Limited
InventorOwen Drumm
Estimating the term…
A touch sensitive surface has emitters and detectors arranged around at least a portion of a periphery of the touch sensitive surface. The emitters produce optical beams that are received by the detectors. Touch events disturb the beams propagating toward the detectors. Variations in the beams resulting from the touch events are captured and are used to determine the touch events. A stylus disturbs beams when in contact with the touch sensitive surface. The stylus includes a control that can change the stylus from a default state to an alternative state, where the stylus disturbs the beams differently in each state. A controller determines the state of the stylus based on the beams received by the detectors.
A system comprising:
A stylus configured to contact a touch sensitive surface of a touch system, the touch system having emitters that produce optical beams that propagate across the touch sensitive surface and are received by the detectors, wherein the stylus disturbs a portion of the optical beams, the stylus having a control configured to change the stylus between a first state and a second state, wherein the stylus disturbs the portion of the optical beams in a different manner in the second state than the first state such that the touch system can determine the state of the stylus.
A method of determining a state of a stylus in contact with a touch sensitive surface, the touch sensitive surface having emitters that emit optical beams and detectors that detect optical beams, the stylus configured to switch between a first state and a second state, the stylus disturbing a portion of the optical beams in a different manner in the second state than the first state, the method comprising:
Dependencies are inferred from the claim text.