20240036681. PEN STATE DETECTION CIRCUIT AND PEN STATE DETECTION METHOD simplified abstract (Wacom Co., Ltd.)

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PEN STATE DETECTION CIRCUIT AND PEN STATE DETECTION METHOD

Organization Name

Wacom Co., Ltd.

Inventor(s)

Yoshio Nomura of Saitama (JP)

PEN STATE DETECTION CIRCUIT AND PEN STATE DETECTION METHOD - A simplified explanation of the abstract

This abstract first appeared for US patent application 20240036681 titled 'PEN STATE DETECTION CIRCUIT AND PEN STATE DETECTION METHOD

Simplified Explanation

The abstract describes a patent application for a circuit that detects the state of an electronic pen based on the output signal from a capacitance touch sensor. The touch sensor consists of sensor electrodes arranged in a planar manner, while the electronic pen has a first and second electrode. The pen state detection circuit includes a processor that acquires coordinate values from the touch sensor, calculates an inclination value indicating the pen's inclination, and outputs the inclination value.

  • The patent application is for a pen state detection circuit connected to a capacitance touch sensor and electronic pen.
  • The touch sensor has planar sensor electrodes, and the pen has a first and second electrode.
  • The circuit includes a processor that acquires coordinate values from the touch sensor.
  • The processor calculates an inclination value indicating the pen's inclination using the acquired coordinate values.
  • The circuit outputs the inclination value.

Potential Applications:

  • Digital drawing tablets or graphics tablets that can detect the inclination of an electronic pen.
  • Touchscreen devices with stylus support that can detect the angle at which the stylus is held.
  • Virtual reality or augmented reality systems that use electronic pens for interaction and can detect pen inclination.

Problems Solved:

  • Traditional touch sensors may not be able to accurately detect the inclination of an electronic pen.
  • Existing pen state detection circuits may not provide precise inclination values.
  • The patent application solves the problem of accurately detecting the inclination of an electronic pen using a capacitance touch sensor.

Benefits:

  • Improved accuracy in detecting the inclination of an electronic pen.
  • Enhanced user experience in digital drawing or writing applications.
  • Increased versatility in stylus-based input devices.
  • Potential for more natural and intuitive interaction in virtual reality or augmented reality systems.


Original Abstract Submitted

a pen state detection circuit that is connected to a touch sensor of a capacitance type and adapted to detect a state of an electronic pen in accordance with an output signal from the touch sensor. the touch sensor includes sensor electrodes disposed in a planar manner, and the electronic pen includes a first electrode and a second electrode. the pen state detection circuit includes a processor configured to sequentially and repeatedly: acquire first and second coordinate values in a sensor coordinate system, the coordinate system being defined on a detection surface of the touch sensor, the first coordinate values indicating a projected position of the first electrode, the second coordinate values indicating a projected position of the second electrode; calculate an inclination value indicative of an inclination of the electronic pen from the acquired first and second coordinate values in accordance with calculation rules; and output the inclination value.

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