Keyboard Finger Identification with Visual Audible Feedback
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Solution Overview
Problem
Existing data entry systems, particularly those with Tapping Finger Identification (TFI) technology, face challenges in accurately and efficiently differentiating between fingers used to input symbols or functions on keyboards, as they lack effective visual and audible cues to guide users.
Innovation Solution
The implementation of visual and audible cues that detect and identify the fingers used to actuate keys, providing real-time feedback to users through displays and audio outputs, allowing for accurate symbol or function selection based on finger identification, even on virtual keyboards without mechanical keys.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If TFI technology is implemented to differentiate fingers for data entry, then input precision and functionality are improved, but user operation complexity and difficulty increase due to lack of visual and audible cues
Solution Approach 1:
The patent implements visual feedback through LED indicators on each key that illuminate to show which finger should press which key, and audible feedback through speakers that provide phonetic guidance. This feedback mechanism resolves the contradiction by making the TFI system intuitive and easy to use while maintaining accurate finger identification capability.
Solution Approach 2:
The patent introduces LED indicators and audio outputs as intermediary elements between the user and the TFI system. These intermediaries translate the complex finger identification requirements into simple visual and audible signals that guide users, thereby reducing operation difficulty without compromising identification precision.
2Ease of operation
If visual and audible cues are added to TFI-enabled keyboards, then ease of operation is improved, but device complexity increases
Solution Approach 1:
The patent makes the keyboard keys multi-functional by integrating LED indicators directly into each key cap. The same key structure serves both as a tactile input surface and as a visual display element, eliminating the need for separate indicator components and reducing overall device complexity.
Solution Approach 2:
The patent combines multiple functions (tactile input, visual indication, and audio output) into a unified keyboard system. The LED indicators are integrated into the key caps themselves, and the audio system is coordinated with the key press detection, merging these elements into a cohesive whole rather than separate add-on components.
3Measurement precision
If real-time finger detection and feedback are implemented, then input accuracy is improved, but processing time and system resource usage increase
Solution Approach 1:
The patent pre-arranges the LED indicators on each key to correspond to specific fingers (e.g., left index finger LED, right middle finger LED). This preliminary configuration allows the system to immediately display the correct guidance without requiring complex real-time analysis, thereby maintaining high input accuracy while minimizing processing delay.
Data Source
AI summary
Visual and/or audible cues are used to assist users with data input on keyboards having keys associated with multiple input symbols or functions. Each input symbol or function has a correspondence to an input object, such as a finger. During key actuation, one or more input objects are detected. Candidate input symbols or functions are determined based on identification of the key being actuated. The candidate input symbols or functions are presented to the user in the form of cues having visual and/or audible features. The detected input objects may be optionally identified and presented to the user in the form of cues having visual and/or audible features as well.