Virtual Keyboard Projection for Compact Data Entry
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Solution Overview
Problem
Conventional data entry methods, such as QWERTY keyboards, are not well-suited for mobile environments due to their size and require both hands for operation, while alternative methods like mini-keyboards, voice recognition, and handwriting recognition face inefficiencies and usability issues.
Innovation Solution
A computer-implemented data entry device that uses sensors to identify actuating objects, such as fingers or styluses, and assigns symbols or functions to virtual key regions in two- or three-dimensional space, allowing for compact and efficient data entry without the need for physical keys or surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a full-size QWERTY keyboard is used, then data entry efficiency is improved, but device portability and compactness deteriorate
Solution Approach 1:
The patent transitions from a two-dimensional physical keyboard surface to a three-dimensional virtual space where keys are projected as light patterns. This allows the keyboard to be displayed in mid-air without requiring a physical surface, enabling full-size keyboard functionality in a compact portable device.
Solution Approach 2:
The patent replaces the mechanical physical keyboard with an optical projection system. Instead of physical keys that require space and support structures, the system uses light projection to create virtual keys that can be activated by gestures or contactless interaction, eliminating the need for a large physical footprint.
2Adaptability or versatility
If a virtual keyboard with laser projection is used, then keyboard functionality is improved, but power consumption increases
Solution Approach 1:
The patent uses intermittent or periodic projection of the virtual keyboard rather than continuous high-power laser projection. The keyboard can be projected on-demand when needed and deactivated when not in use, reducing overall power consumption while maintaining full functionality during active typing sessions.
Solution Approach 2:
The patent adjusts the projection parameters such as brightness, projection duration, and refresh rate to optimize the balance between visibility and power consumption. The system can dynamically change projection intensity based on ambient light conditions and user needs, reducing energy usage while maintaining adequate keyboard functionality.
3Volume of moving object
If mini-keyboards are used, then portability is improved, but typing efficiency and usability deteriorate
Solution Approach 1:
The patent creates a full-size virtual keyboard in three-dimensional space using light projection, allowing users to access all standard keyboard keys and functions without the space constraints of mini-keyboards. The virtual keyboard can be expanded to full size in mid-air while the device remains compact and portable.
Data Source
AI summary
A method and apparatus for inputting data for an electronic data entry device are provided. In one embodiment, identification of an input object such as the particular fingers of a user that are used to actuate a key region is performed. The symbol associated with the actuated key region and the finger (or other input object) used is determined. In other embodiments, virtual input devices with interfaces such as QWERTY style keyboards, phone keypads, and multi-touch capable touchpads or tablets are provided in input regions. One or more video capturing devices remotely acquire actuation information from the input regions during data entry. User inputted symbols or functions are determined based on the actuations, their locations and identified input object sets that caused the actuations.