Wireless Writing Tool for Address-Free Erasable Displays
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Solution Overview
Problem
Existing writable-erasable media and devices face challenges in efficiently reproducing digitally stored information without internal addressing systems, are limited by size constraints, and require complex manufacturing processes, while existing wireless solutions are impractical or require direct contact, leading to durability issues.
Innovation Solution
A wireless writing device with sensors that capture non-visible light patterns on the medium, a data processing unit to determine position and orientation, and inducer entities that switch between states to generate visual representations on a writable-erasable medium without internal addressing, using magnetic, electric, or electromagnetic fields to manipulate image elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If internally addressing devices (passive-matrix or active-matrix driving circuits with pixel-controlling units) are used to write visual information on displays, then the displayable area and resolution can be increased, but the manufacturing cost and complexity increase faster than linear trend due to stricter quality control requirements, stronger driver IC capabilities, and more complicated system-level control
Solution Approach 1:
The patent extracts and removes the internal addressing device (pixel-controlling units, driver ICs, and system-level control circuits) from the display structure. Instead of having these components integrated within the display, the invention uses an external writing tool that generates electromagnetic fields to directly manipulate image elements on the display surface, thereby eliminating the complex internal addressing infrastructure while maintaining the ability to write and display visual information.
Solution Approach 2:
The patent replaces the mechanical/electrical addressing system (with physical pixel-controlling units and driver ICs) with an electromagnetic field-based system. The external writing tool generates electromagnetic fields that penetrate the display substrate and directly act on the image elements, substituting the need for complex electrical addressing circuits with a field-based manipulation approach.
2Adaptability or versatility
If LCD, OLED, or electrophoresis displays are used to present digitally stored information with erasability, then the information can be updated and erased, but the manufacturing cost and complexity increase due to the required internal addressing devices and stricter quality control
Solution Approach 1:
The patent extracts the addressing functionality from the display structure itself and relocates it to an external writing tool. The display medium retains only the image elements and substrate, while the external tool provides the electromagnetic field generation capability needed for writing and erasing, thereby simplifying the display system while maintaining adaptability.
Solution Approach 2:
The external writing tool serves multiple functions: it acts as both the writing instrument and the erasing mechanism by simply reversing or removing the electromagnetic field application. This multi-functional approach eliminates the need for separate addressing circuits and control systems that would be required in traditional LCD, OLED, or electrophoresis displays.
3Ease of operation
If conventional wireless writing solutions are used, then wireless operation is achieved, but the solutions are generally impractical or require direct contact which leads to durability issues
Solution Approach 1:
The patent replaces the mechanical contact-based writing system with an electromagnetic field-based system. The writing tool generates electromagnetic fields that can penetrate through the air and act on the image elements without physical contact, thereby achieving wireless operation while eliminating wear and durability issues associated with contact-based mechanisms.
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
Enables flexible, scalable, and intuitive generation of visually stable representations from digital data on a writable-erasable medium, reducing manufacturing complexity and size constraints, and allowing wireless operation with no direct contact.
Implementation Method 1
a sensor capable of sensing non-visible light and configured to produce signals related to two-dimensional marker information associated with said writable-erasable medium
Implementation Method 2
using magnetic, electric, or electromagnetic fields to manipulate image elements
Implementation Method 3
using magnetic, electric, or electromagnetic fields to manipulate image elements
Data Source
AI summary
The present invention concerns a hand holdable writing tool for generating a visual representation on a writable-erasable, passive medium. The invention also provides the assembly of the writing tool and the medium. The writing tool comprises a sensor capable of sensing non-visible light, and a data processing entity, configured for activating and/or disactivating individual inducer entities of the tool, thereby inducing image elements of the medium to generate said visual representation.