EMR Digitizer Tuning for Magnet Interference in Multi-Mode Devices
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current information handling systems with electromagnetic resonance digitizer technology face interference from internal magnets in various positional configurations, such as clamshell, movie, tent, and tablet modes, which affects the accuracy of the EMR digitizer sheet's magnetic field and communication with the EMR pen, and existing solutions only account for static interference in specific configurations.
Innovation Solution
An electromagnetic resonance digitizer tuning system that uses sensors to determine the current positional configuration and adjusts the current supplied to the EMR digitizer sheet's coils to minimize interference from nearby magnets, employing different tuning schemes for each configuration to maintain accuracy and reduce system size and weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the information handling system uses magnets in various positional configurations, then the system achieves multiple operational modes (clamshell, movie, tent, tablet), but the magnets cause interference with the EMR digitizer sheet's magnetic field, reducing measurement precision
Solution Approach 1:
The patent implements dynamic tuning of the EMR digitizer sheet by detecting the current positional configuration and adjusting the drive signal parameters (frequency, amplitude, phase) in real-time. This allows the system to adapt the magnetic field characteristics to compensate for interference from magnets in different configurations, maintaining measurement precision across all operational modes.
Solution Approach 2:
The system changes physical parameters of the EMR drive signal based on detected positional configuration. By modifying frequency, amplitude, and phase parameters dynamically, the system optimizes the magnetic field strength and characteristics for each configuration, thereby reducing interference effects and maintaining digitizer accuracy.
2Device complexity
If existing solutions use static interference compensation for specific configurations, then the implementation is simpler, but the solution does not account for multiple positional configurations, reducing adaptability
Solution Approach 1:
The patent creates a universal tuning system that handles multiple positional configurations through a single integrated approach. The system detects the current configuration and applies appropriate tuning parameters from a set of pre-determined schemes, making the system adaptable to all configurations without requiring separate hardware solutions for each mode.
Solution Approach 2:
The system automatically detects the current positional configuration and self-adjusts the EMR drive signal parameters without user intervention. The controller autonomously selects and applies the appropriate tuning scheme based on sensor input, enabling the system to adapt to different configurations on its own.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system effectively decreases interference across multiple positional configurations, ensuring accurate communication between the EMR digitizer sheet and pen while maintaining a compact and lightweight information handling system.
Implementation Method 1
electromagnetic resonance digitizer sheet capable of communicating with an electromagnetic resonance pen
Implementation Method 2
tuning the electromagnetic field emitted by an electromagnetic resonance digitizer sheet
Implementation Method 3
decrease interference from nearby magnets by tuning the electromagnetic field
Data Source
AI summary
A method of tuning an electromagnetic radiation field based on positional configurations of an information handling system may comprise generating an electromagnetic radiation field tuned to detect input from an EMR pen via an EMR digitizer, where the tuning minimizes effects from at least one operational magnet of the information handling system, receiving an indication from a sensor hub of a change in a positional configuration to a first positional configuration, wherein the first positional configuration is one of a plurality of positional configurations defining a degree of rotation of a display housing chassis with respect to a base housing chassis, associating the first positional configuration with a first EMR sheet tuning configuration tuned for the first positional configuration, and instructing a tuning network operably connected to the EMR digitizer to tune an EMR digitizer electromagnetic radiation field to the first EMR sheet tuning configuration.