US 2018/0120963 A1 · STYLUS AND SENSOR CONTROLLER

Abstract

A stylus is provided, which includes a core body, an electrode disposed adjacent to the core body, a transmitter that sends a downlink signal including switch information SW1 using the electrode, and a controller that determines whether the stylus is in contact state in which the core body is held in contact with an operating surface or the stylus is in hover state in which the core body is not held in contact with the operating surface. In the contact state, the controller controls the transmitter to send the switch information SW1 at a first bit rate (e.g., data (E)). In the hover state, the controller controls the transmitter to send the switch information SW1 at a second bit rate smaller than the first bit rate (e.g., data (C)). A technical advantage includes lowering the possibility of a failure to receive downlink signals when the stylus is in hover state, even though the stylus sends the downlink signals with the same intensity as when the stylus is in contact state.

Claims28

Dependent claims

A stylus comprising:

a core body;
an electrode disposed adjacent to the core body;
a transmitter that sends a signal including a first digital value using the electrode;
and
a controller that determines whether the stylus is in contact state in which the core body is held in contact with an operating surface or in hover state in which the core body is not held in contact with the operating surface, controls the transmitter to send the first digital value at a first bit rate when the stylus is determined to be in contact state, and controls the transmitter to send the first digital value at a second bit rate smaller than the first bit rate when the stylus is determined to be in hover state.

2 more elements

Dependencies are inferred from the claim text.

Stylus and sensor controller

Life of this patent

Stylus and sensor controller

Life of this patent

Abstract

Claims28