Smartphone Camera Orientation for Safe Walking Navigation
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Solution Overview
Problem
Texting while walking often results in users being unable to see obstacles ahead due to their posture, leading to accidents, as existing technologies do not provide effective navigation aids for mobile communication device users.
Innovation Solution
A novel method incorporating a moveable camera assembly with a wide-angle lens, stepper motor, and accelerometer data to continuously adjust the camera's view to maintain a forward-facing horizon on the screen, regardless of the device's orientation, combined with software to present this view and optional image analysis for alerts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If users hold the smartphone tilted at angles between a few degrees to 60 degrees above the horizon for texting, then the device can be comfortably operated with one hand, but the user's forward path becomes invisible leading to collision risks
Solution Approach 1:
The patent introduces a new dimension of visual information by displaying camera-captured forward path images on the smartphone screen. This overlays a virtual reality layer (the captured scene) onto the physical reality, allowing users to see obstacles in the forward path without changing their physical head or device orientation. The camera module captures light from the forward direction and presents it as a visual feed, effectively adding a dimensional layer of situational awareness that compensates for the blocked forward view caused by tilted device holding.
2Device complexity
If a fixed-angle camera is used to provide frontal view, then the camera structure is simple, but it cannot automatically adjust to different device orientations during walking
Solution Approach 1:
The patent implements a feedback control system where the accelerometer continuously monitors the device's orientation angles (pitch and roll) and feeds this data to the control unit. The control unit processes this feedback information and automatically adjusts the camera module's pointing direction by actuating the first and second rotating assemblies. This closed-loop feedback mechanism ensures the camera maintains alignment with the forward path regardless of how the user holds or moves the device, achieving adaptability without requiring complex manual adjustment mechanisms.
Solution Approach 2:
The patent transforms the static fixed-angle camera into a dynamic system capable of real-time orientation adjustment. The camera module is mounted on two rotating assemblies that can change its pointing direction in response to device movement. The first rotating assembly adjusts the elevation angle while the second adjusts the azimuth angle, creating a dynamically adaptable camera system that continuously tracks the forward path. This dynamic capability allows the camera to maintain proper alignment despite changes in device orientation during walking.
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 users to navigate safely by providing a continuous, wide-angle view of the forward path on their screen, reducing the risk of collisions and improving situational awareness during texting.
Implementation Method 1
an accelerometer, for detecting the attitude of the device in reference to gravity
Implementation Method 2
provision of a wide angle view for the camera
Data Source
AI summary
Texting while walking is a behavior oftenly seen with the advent of extensive mobile networks and the popularity of smart phones. It is also related to the recent general expectation of immediate notification and response. Despite accidents are frequent with this activity, as the users cannot see their forward paths, there has not been any effective aid to prevent such occurrences. The present invention provides new features and designs enabling the cameras in smart mobile communication devices to continuously and automatically provide views of the forward paths on the screens, while maintaining the compactness of smart phones, for users who are texting while walking to safely navigate.