Magnetic Orientation Detection for Flat Mobile Devices

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Solution Overview

Problem

Existing mobile computing devices struggle to determine their orientation when positioned flat or at a low angle relative to gravity, as accelerometers and similar sensors require the device to be upright to function effectively.

Innovation Solution

A system comprising an orientation-dependent device and a detection device that uses magnetic elements and detection circuitry to determine the relative orientation, allowing the device to be magnetically retained and configured in various modes, including portrait and landscape, even when flat or at a low angle, through a magnetic coupling mechanism.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If accelerometers or gravity sensors are used to detect device orientation, then the device can automatically reorient display output when positioned upright, but the device cannot determine orientation when positioned flat or at a low angle

Engineering Contradiction:
Improveorientation detection capabilityVSAvoidsensor dependency
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent replaces gravity-dependent mechanical sensors (accelerometers) with a magnetic field-based detection system. The detection device uses magnetic elements and circuitry to sense orientation through magnetic coupling, eliminating the need for gravity-dependent sensors and enabling orientation detection in any position including flat and low-angle orientations.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent introduces a magnetic field as an intermediary between the orientation-dependent device and the detection device. Magnetic elements embedded in both devices create a magnetic coupling that serves as a mediator to transmit orientation information without requiring direct mechanical contact or gravity-dependent sensing.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Adaptability or versatility

If magnetic elements and detection circuitry are used to determine relative orientation, then the device can be retained and configured in various modes including flat positions, but additional magnetic components increase device complexity

Engineering Contradiction:
Improvepositioning flexibilityVSAvoidmagnetic coupling mechanism
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent implements a universal magnetic coupling mechanism that serves multiple functions: it provides mechanical retention (holding the device in place), enables orientation detection through magnetic field sensing, and allows flexible positioning in various modes including flat and angled positions. This multi-functional approach consolidates what could be separate systems into a single integrated solution.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent merges the retention mechanism and orientation detection system into a single magnetic coupling architecture. The same magnetic elements that provide mechanical holding force also enable orientation sensing through their magnetic field characteristics, reducing overall system complexity despite adding magnetic components.

Inventive Principle:
Principle #5Merging (Combining)

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

Enables the orientation-dependent device to programmatically configure its display output based on detected orientation, regardless of its position relative to gravity, allowing for flexible operation and reducing the need for gravity-dependent sensors, which can lead to smaller and more versatile device designs.

Implementation Method 1

a detection device having a receiving surface to magnetically retain the orientation-dependent device in any one multiple possible orientations

Methodology Applied
Scientific EffectMagnetic coupling: Magnetism

Implementation Method 2

circuitry that detects the relative orientation of the orientation-dependent device based on a magnetic orientation of the orientation-dependent device relative to the detection device

Methodology Applied
Scientific EffectMagnetic field detection: Magnetic Field

Data Source

PatentUS9395827B2System for detecting orientation of magnetically coupled devices
Publication Date: 2016.07.19 QUALCOMM INC
  • US9395827B2 patent drawing
  • US9395827B2 patent drawing
  • US9395827B2 patent drawing

AI summary

A device includes a receiving surface to magnetically retain the orientation-dependent device in any one of a plurality of possible orientations. The detection device includes circuitry that detects the relative orientation of the orientation-dependent device based on a magnetic orientation of the orientation-dependent device relative to the detection device.