Active Pen Motion-Activated Wake Engine for Immediate Input Response
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Solution Overview
Problem
Conventional active pens experience a noticeable delay in display screen response after a period of non-use due to power conservation methods that deactivate the pen, requiring initial contact with the screen for activation, leading to delayed detection and response.
Innovation Solution
An active pen system with a motion-activated device that couples the power supply to the pen processor upon movement, activating the pen tip to provide immediate inputs to the information handling system display screen.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the active pen is deactivated during periods of non-use to conserve power, then power consumption is reduced, but the display screen response time increases due to activation delay
Solution Approach 1:
The patent applies preliminary action by activating the pen processor in advance upon detecting motion, before actual contact with the display screen occurs. The motion detection mechanism triggers pen processor activation during the motion phase, so that by the time the pen tip contacts the screen, the processor is already active and ready to process inputs immediately, thus eliminating the activation delay while maintaining power conservation during true non-use periods
2Loss of time
If the active pen remains activated continuously, then the display screen response time is immediate, but power consumption increases
Solution Approach 1:
The patent applies dynamics by making the pen processor activation state adaptive rather than static. The system dynamically transitions between deactivated and activated states based on real-time motion detection. When motion is detected, the processor activates in preparation for potential input; when no motion is detected for a period, the processor deactivates to conserve power. This dynamic state management allows the system to optimize the balance between immediate response capability and power consumption based on actual usage conditions
3Use of energy by moving object
If contact-based activation is used to activate the pen, then power is conserved during non-use, but a noticeable delay occurs before the display screen detects and responds to pen inputs
Solution Approach 1:
The patent applies preliminary action by triggering pen processor activation during the motion phase, before actual contact with the display screen. The motion detection mechanism serves as an early warning system that prepares the processor in advance, so when the pen tip contacts the screen, the processor is already active and can process inputs immediately without delay, thus maintaining good user experience while preserving power conservation benefits
Data Source
AI summary
An information handling system (IHS) input system includes an IHS having an IHS processor and an IHS display screen coupled to the IHS processor. A pen is configurable to provide an input to the IHS. The pen includes a power supply system, a pen tip, a pen processor coupled to the pen tip, a pen memory that includes instructions that, when executed by the pen processor, causes the pen processor to provide a wake engine, and a motion activated device that is coupled between the power supply system and the pen processor. The motion activated device is configured, in response to movement of the pen, to couple the power supply system to the pen processor such that the wake engine activates the pen tip to configure the pen tip to provide inputs to the IHS processor through the IHS display screen.