Finger-Worn Thimble Optical Tracking for Screen Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current pointing devices for mobile devices like laptops and smartphones are cumbersome and inefficient, as they require users to divert their attention from the screen to navigate, whereas hand gestures provide a more natural and intuitive method of interaction, but are not easily applicable to non-touchscreen devices.
Innovation Solution
The Thimble, a wireless electronic device worn on the finger, uses a MEMS gyroscope, LED optical sensor, touch pads, and communication units to enable intuitive control of electronic devices by tracking finger movements and gestures, emulating mouse functionality without the need to look away from the screen.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional pointing devices like mice or touchpads are used, then control functionality is provided, but user attention must be diverted from the screen reducing efficiency
Solution Approach 1:
The patent replaces mechanical pointing devices (mice, touchpads) with an optical tracking system. The optical sensor detects finger position and movement directly in front of the screen, substituting mechanical interaction with optical field-based tracking, allowing users to control without physical contact or attention diversion.
Solution Approach 2:
The patent introduces an optical sensor as an intermediary between the user's finger and the screen. This intermediary captures optical information from the finger's position and translates it into control signals, enabling indirect but accurate control without requiring the user to look at the pointing device.
2Ease of operation
If touch screens are used to enable natural hand gestures, then ease of operation improves, but device cost and availability for laptops and desktops worsens
Solution Approach 1:
The patent extracts the gesture recognition functionality from the screen itself and places it in a separate optical sensing system. Instead of requiring the screen to have touch capabilities, the system uses an external optical sensor to detect finger gestures in the air space in front of the screen, separating the sensing function from the display function.
Solution Approach 2:
The patent creates a universal control system that can work with any screen type (LCD, LED, projection) without requiring touch screen capabilities. The optical tracking system provides multi-functional control for laptops, desktops, and televisions regardless of their display technology, making gesture control universally applicable.
3Measurement precision
If optical sensors and gyroscopes are added to enable finger tracking, then control precision improves, but device complexity increases
Solution Approach 1:
The patent merges multiple sensing functions (optical detection, gyroscopic orientation sensing, acceleration measurement) into a single integrated thimble device. By combining these sensors in one wearable unit, the system achieves high measurement precision while consolidating complexity into a compact form factor rather than requiring separate systems.
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
The Thimble allows for seamless and user-friendly control of various electronic devices by converting finger movements into screen interactions, enhancing usability and reducing the need for traditional pointing devices like mice or remote controls.
Implementation Method 1
a Micro Electro Mechanical System (MEMS) Micro Gyroscope unit for determining orientation changes of said Thimble
Implementation Method 2
a light-emitting diode (LED) optical sensor located on the front of the Thimble so that the Thimble position can be detected when said LED optical sensor is directed at the screen
Data Source
AI summary
The Thimble is a wireless electronic device that can be worn on a finger, in order to control electronic devices, computers screens, laptops screen, televisions game console etc. The Thimble can replace either a computer mouse or a remote control. The Thimble uses location technologies in order to calculate its position, movement and orientation. Touch pads allow for accepting user selection, similar to mouse left-clicks or right-clicks, or remote control OK function.