Virtual Handwriting Input Using Distance-Measuring Detector
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Solution Overview
Problem
Existing handwriting input technologies for touch screens are costly, complex, and prone to damage, with high costs increasing when sensitivity is improved to address non-response issues.
Innovation Solution
A method and electronic apparatus using a distance-measuring detector to obtain position coordinates in a virtual handwriting area, generating a handwriting track, and identifying characters for display, replacing the need for dedicated touch screen materials with a low-cost solution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a resistance-type or capacitance-type touch screen is used for handwriting input, then handwriting input functionality is achieved, but the cost increases, the technique becomes complicated, and the screen becomes more prone to damage
Solution Approach 1:
The patent replaces the mechanical/electrical touch detection system (resistance or capacitance layers) with an optical detection system using a camera. The camera captures images of the handwriting on the screen surface, and character recognition is performed on these images, eliminating the need for complex touch screen materials and structures.
Solution Approach 2:
The patent creates a visual copy of the handwriting by capturing an image of the written characters on the screen. Instead of detecting touch coordinates directly, the system photographs the handwriting trace and performs recognition on the captured image, simplifying the hardware requirements.
2Measurement precision
If the sensitivity of the touch screen is improved to solve the non-response problem, then the responsiveness is improved, but the cost of the touch screen is further increased
Solution Approach 1:
The patent replaces the sensitive touch detection mechanism with a standard camera imaging system. Instead of requiring high-sensitivity touch layers that are expensive to manufacture, the system uses the camera's optical detection capability to capture handwriting images, which can be processed with standard sensitivity levels.
Solution Approach 2:
The patent leverages the existing camera hardware already present in mobile devices for the primary function of photographing, and repurposes it for handwriting recognition. This self-service approach eliminates the need for additional specialized sensors or components.
Data Source
AI summary
The embodiments of the present invention provide a method and an electronic apparatus for realizing virtual handwriting input. The method for realizing virtual handwriting input includes: obtaining, by an electronic apparatus, position coordinates of a handwriting apparatus in a virtual handwriting area through monitoring in a real-time manner, where the virtual handwriting area is an area in which a distance-measuring detector in the electronic apparatus may perform effective distance measurement; obtaining a track formed by the position coordinates, and obtaining a handwriting track of an entire handwriting input process when it is detected that the current handwriting input ends; and identifying a character corresponding to the obtained handwriting track and displaying the identified character. With the embodiments of the present invention, handwriting input may be realized simply and conveniently, and handwriting input may be realized and may be implemented with a low cost.