Virtual Keyboard Input Confirmation With Predictive Highlighting
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Solution Overview
Problem
Users of handheld electronic devices face challenges in accurately entering text due to the separation of input and output devices, which requires shifting attention and is problematic when multitasking, leading to potential mistakes.
Innovation Solution
A handheld electronic device with a touch screen interface featuring a virtual QWERTY keyboard and a disambiguation routine that provides real-time confirmation and predictive text input, using highlighting to indicate the default and predictive linguistic elements, allowing users to confirm inputs without looking at the output screen.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a physical keypad is separated from the display to reduce device size, then device compactness is improved, but text input accuracy deteriorates due to attention shifting requirements
Solution Approach 1:
The patent combines the input display and output display into a single unified display structure. The input display shows the virtual keyboard and registered inputs, while the output display shows confirmed text, but both are integrated on the same physical display device rather than requiring separate physical keypads and displays. This merging eliminates the need to shift attention between separate input and output devices while maintaining compact device size.
Solution Approach 2:
The system provides immediate visual feedback by displaying registered inputs on the input display as they are entered, and automatically confirming them when disambiguation is complete. The output display shows the confirmed text in real-time. This feedback mechanism allows users to verify inputs without shifting attention to a separate output device, improving text input accuracy while maintaining device compactness.
2Device complexity
If a virtual keyboard is used on the display to reduce device complexity, then device complexity is improved, but text input accuracy deteriorates due to lack of tactile feedback
Solution Approach 1:
The system provides visual feedback by displaying each registered input on the input display as it is entered, and showing the complete disambiguated result when ready. This visual confirmation compensates for the lack of tactile feedback from a virtual keyboard, allowing users to verify their inputs accurately without physical key resistance or click feedback.
Solution Approach 2:
The system performs preliminary disambiguation processing and displays the complete intended text on the input display before the user confirms it. This allows users to review and verify the complete text string before final submission, improving accuracy by catching errors before they are committed to the output.
3Measurement precision
If real-time disambiguation is provided to improve text input accuracy, then text input accuracy is improved, but processing time increases
Solution Approach 1:
The system performs disambiguation processing incrementally as inputs are registered, rather than waiting for complete text entry. When enough inputs are registered to form a disambiguable pattern, the system automatically processes and displays the result. This partial processing approach improves accuracy while minimizing delays by processing only when sufficient information is available.
Solution Approach 2:
The system performs preliminary disambiguation processing in the background as inputs are registered, preparing the disambiguated result before the user needs to confirm it. This preliminary action reduces the perceived processing time by having the result ready when the user is prepared to review and confirm the text.
Data Source
AI summary
A letter confirmation system is provided on a handheld electronic device. The letter confirmation provides highlighting of various letters that have been input to the handheld electronic device during a string of member input actuations. The letter confirmation system can additionally provide predictive linguistic elements that would be appropriate next inputs. Various types of highlights can be provided in various combinations to provide various indications to a user.