Electronic Pen State-Based Coding Signal Timing Control
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Solution Overview
Problem
Electronic pens experience high power consumption due to continuous signaling even when not in use, leading to inefficiencies in energy management across different working states.
Innovation Solution
A method and device for controlling an electronic pen that determines state information to adjust the timing of coding signal frequency transmission, optimizing energy consumption by setting distinct intervals for sleep, standby, and working states, thereby reducing unnecessary power usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the electronic pen continuously sends coding signals to maintain communication readiness, then communication reliability is improved, but energy consumption increases
Solution Approach 1:
The electronic pen transitions between wake and sleep states periodically, sending coding signals only during wake states. The controller monitors touch screen contact status and pen movement to determine when to wake up and transmit signals, rather than continuously transmitting. This periodic signaling maintains communication reliability while significantly reducing energy consumption during idle periods.
2Use of energy by moving object
If the electronic pen enters sleep state to reduce power consumption, then energy efficiency is improved, but response time increases
Solution Approach 1:
The controller continuously monitors touch screen contact status and pen movement even when the electronic pen is in sleep state. When contact is detected or movement is sensed, the controller immediately triggers the electronic pen to wake up and send coding signals, eliminating the need for continuous monitoring while enabling rapid response to user actions.
Solution Approach 2:
The system uses feedback from the touch screen controller about contact status and from motion sensors about pen movement to dynamically control the electronic pen's wake-sleep transitions. This feedback mechanism ensures the pen responds promptly to actual usage conditions while maintaining sleep state during idle periods, optimizing both energy efficiency and response time.
3Measurement precision
If the electronic pen uses pressure sensors and motion sensors to detect usage state, then state detection accuracy is improved, but device complexity increases
Solution Approach 1:
The electronic pen uses existing sensors (pressure sensors and motion sensors) that were already part of the device for other functions. These sensors are repurposed to detect usage states and trigger wake-sleep transitions, eliminating the need for additional dedicated sensors. This multi-functional use of existing components improves state detection accuracy while avoiding increased device complexity.
Data Source
AI summary
Disclosed are an electronic pen, a method and a device for controlling an electronic pen, and a computer-readable storage medium. The method includes: obtaining state information of the electronic pen; and determining a time for the electronic pen to send coding signal frequency information according to the state information, and controlling the electronic pen to send the coding signal frequency information when reaching the time, to reduce an energy consumption of the electronic pen.