Mobile Device Motion Processing Using IMU and Magnetic Field Detection

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Solution Overview

Problem

Existing mobile devices face a design tradeoff in processing motion data for smooth rendering and control of graphic content, requiring increased resources such as processing power, memory, and hardware, which increases cost and size.

Innovation Solution

A mobile device equipped with an inertial measurement unit (IMU) and a magnetic field detector, coupled with a processing unit that monitors directional data and selectively controls graphic content based on inertial and user motion, utilizing graphic libraries to optimize resource usage and provide smooth intuitive control.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If increased processing power, memory, and hardware resources are allocated to motion data processing, then smooth rendering and control of graphic content is improved, but device cost and size increase

Engineering Contradiction:

Improvemotion data processing efficiencyVSAvoiddevice size and cost

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent divides motion data processing into distinct segments: inertial motion data from IMU is processed separately from directional data from the magnetic field detector. The processing unit selectively applies different control strategies based on data type, allowing optimized resource allocation for each segment rather than uniformly high-resource processing

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The processing unit dynamically changes processing parameters by selectively controlling graphic content manipulation based on priority levels. Inertial motion data and directional data are processed with different thresholds and response priorities, allowing the system to adjust computational intensity according to the specific motion context rather than maintaining constant high processing power

Inventive Principle:

Principle #35Parameter changes

2Speed

If the processing unit continuously monitors and processes all motion data, then graphic content control responsiveness is improved, but energy consumption and processing overhead increase

Engineering Contradiction:

Improvegraphic content control responsivenessVSAvoidprocessing energy consumption

Core Design Contradiction:

SpeedVSUse of energy by moving object

Solution Approach 1:

The processing unit employs periodic monitoring of motion data with selective processing intervals. Rather than continuously processing all incoming data at maximum intensity, the system periodically evaluates motion data against predetermined thresholds and only processes graphic content manipulation when threshold exceedance is detected, creating an energy-efficient periodic action pattern

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The system applies partial processing action by selectively controlling graphic content manipulation based on priority levels. Not all motion data triggers full processing - instead, the processing unit applies partial processing only when inertial or directional data exceeds thresholds, avoiding excessive energy consumption while maintaining necessary responsiveness

Inventive Principle:

Principle #16Partial or excessive action

3Adaptability or versatility

If multiple sensors and processing capabilities are integrated, then motion control versatility is improved, but device complexity and resource requirements increase

Engineering Contradiction:

Improvemotion control capabilityVSAvoidsensor and processing integration

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The processing unit serves multiple functions by selectively processing both inertial motion data from the IMU and directional data from the magnetic field detector through a single integrated control mechanism. This universal processor handles different data types with different priorities, reducing the need for separate dedicated processing hardware for each sensor type

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent merges the processing of inertial motion data and directional data into a unified control system. The processing unit combines inputs from the IMU and magnetic field detector, applying selective manipulation based on predetermined priorities and thresholds, thereby integrating multiple sensor capabilities without requiring proportionally increased processing hardware

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS10353491B2System and method for motion processing in mobile devices

Publication Date: 2019.07.16 ADVRTAS INC

AI summary

A mobile device is disclosed. The mobile device comprises an inertial measurement unit (IMU), a magnetic field detector, a display screen, and a processing unit. The processing unit is operable to monitor directional data from the magnetic field detector. In response to directional data exceeding a predetermined threshold, the processing unit processes the graphic content based on the inertial motion data from the IMU. The controller then displays the graphic content on the display screen demonstrating graphic motion corresponding to the inertial motion data.