Character Input Device With Integrated Touch Display For Language Symbols
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Solution Overview
Problem
Compact electronic dictionary devices face challenges in efficiently inputting language-specific characters and symbols due to limited keyboard space and unique pronunciations, such as Chinese pinyin and Spanish accents, which are difficult to enter using standard key inputs.
Innovation Solution
A character input device integrates a touch position sensing unit with a display unit in the handwriting input section, allowing for representation of characters absent in the key input section, including pinyin tones, wild-card characters, and Spanish accents, enabling efficient input without altering the keyboard configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the keyboard configuration is kept standard and compact, then the device size remains small and portable, but the ability to input language-specific characters and symbols (such as Chinese pinyin tones and Spanish accents) is limited
Solution Approach 1:
The patent merges the handwriting input section with the display unit, creating an integrated touch panel that serves both as display and input interface. This allows language-specific characters and symbols to be input through handwriting recognition or touch operations on the display screen, eliminating the need for additional physical keys while expanding input capabilities.
Solution Approach 2:
The handwriting input section is designed to handle multiple input methods universally - it can recognize handwritten characters, interpret touch positions for symbol selection, and work with various language-specific input methods (Chinese pinyin, Spanish accents, etc.) through a single integrated interface, making the compact keyboard sufficient for diverse linguistic needs.
2Adaptability or versatility
If additional keys are added to support language-specific characters, then input capability improves, but the device size and keyboard complexity increase
Solution Approach 1:
The patent transitions from two-dimensional physical key布局 to utilizing the display screen's dimensional space for virtual key representation. Language-specific characters and symbols are displayed as virtual keys or graphical representations on the screen, allowing unlimited input options without increasing physical keyboard area.
Solution Approach 2:
The patent uses graphical representations and icons on the display screen to represent language-specific characters and symbols. These visual copies are displayed in the handwriting input section, allowing users to select and input special characters through touch interaction with the graphical representations rather than requiring physical keys.
3Adaptability or versatility
If special symbols are printed on key surfaces, then input capability for special characters improves, but the keyboard design becomes more complex and requires additional manufacturing steps
Solution Approach 1:
The patent replaces the mechanical approach of printing special symbols on physical keys with an electronic display system. The handwriting input section with integrated display unit presents language-specific symbols and characters as graphical elements on the screen, which can be changed and updated without physical manufacturing changes, simplifying production while maintaining input versatility.
Data Source
AI summary
When a search character string is input via a key input section and a handwriting input section, if a spelling is input, a character is input directly by a key input operation or a recognized character is input by a handwriting input operation. If pinyin is input to input a Chinese character, not only are alphabetic characters input by a key input operation, but also the four tones area input by touching a four-tone input screen displayed on the handwriting input section. Accordingly, not only can ordinary characters be input as usual, of course, but also Chinese-specific four tones can be input easily by a touch operation at the handwriting input section even when a pinyin character is input.