Mobile Device Display and Input Expansion via Projection
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Solution Overview
Problem
The limited form factor of mobile devices restricts their use in productivity tasks due to restricted input and display output capabilities, necessitating the carrying of multiple devices for optimal working, which is cumbersome and inefficient.
Innovation Solution
A mobile device input and output expansion apparatus that includes a clamshell structure with a bi-directional projection unit, allowing for the expansion of display output to a larger area and input capabilities through a virtual keyboard, using a communications module to relay signals between the mobile device and the projection unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If mobile devices use a compact form factor, then portability is improved, but input and display output capabilities are restricted
Solution Approach 1:
The system separates the mobile computing device into two functional components: a portable processing unit (smartphone) and a separate projection unit that provides expanded display and input capabilities. This segmentation allows the device to maintain portability while accessing full computing functionality through the projected interface.
Solution Approach 2:
The projection unit acts as an intermediary between the mobile device and the user, translating the limited mobile interface into a full desktop-like experience through projected display and virtual keyboard, enabling enhanced interaction without increasing device portability.
2Productivity
If multiple devices are carried for optimal working, then productivity is improved, but convenience is reduced
Solution Approach 1:
The projection unit is designed to work with multiple types of mobile devices (smartphones, tablets, laptops) through universal connectivity options (USB, Bluetooth, WiFi), allowing a single device to serve multiple functions and replace the need for carrying multiple specialized devices.
Solution Approach 2:
The system dynamically adapts to different mobile devices and usage scenarios, automatically detecting the connected device type and configuring the projected interface accordingly, providing optimal productivity tools for each situation without requiring separate dedicated devices.
3Area of stationary object
If display output is expanded to larger area, then information presentation is improved, but device complexity increases
Solution Approach 1:
The system replaces physical display hardware with optical projection technology, using light to create a virtual display surface. This substitution eliminates the need for complex large-format physical displays while achieving the same information presentation goals through a simpler projected interface.
Data Source
AI summary
An input/output expander for a mobile device has a communications module connectible thereto. Output display signals from the mobile device and input signals to the mobile device are relayed between the mobile device and the bi-directional projection unit by the communications module. A display output projector is connected to the communications module, and the output display signal from the mobile device is converted to a first series of light outputs corresponding to the output display signal. The expander has a virtual keyboard projector generating a second series of light outputs corresponding to a virtual keyboard key arrangement. A key input sensor with a sensing coverage area encompassing the virtual keyboard key arrangement detects user input at specific positions thereon. A key input value corresponding to a specific key of the virtual keyboard key arrangement is generated.