Pen-Shaped Coordinate Device with Dual-Mode Input and Wide Imaging
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Solution Overview
Problem
Conventional pen-shaped mice have limitations in accuracy for inputting stroke data and imaging range, and electronic pens often require battery level notification methods that are easily overlooked.
Innovation Solution
A pen-shaped device with a relative coordinate detecting circuit and signal transmitter, and electronic equipment that switches between absolute and relative coordinates based on position, uses a common lens for wide imaging, and notifies battery level through writing logs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a pen-shaped mouse uses an optical system with a common lens for waveguides, then the configuration is simple, but the imaging range becomes small
Solution Approach 1:
The patent divides the optical system into separate functional components: a first optical system for guiding light from the light source to the reading surface, and a second optical system for guiding reflected light to the imaging element. This segmentation allows each optical system to be optimized independently, enabling a wider imaging range while maintaining configuration simplicity.
2Ease of operation
If a pen-shaped mouse is used for stroke data input, then it is easy to hold and saves space, but the input accuracy is low compared to electronic pens
Solution Approach 1:
The patent makes the pen-shaped device universal by equipping it with both relative coordinate detection capability (for mouse functionality) and absolute coordinate detection capability (for electronic pen functionality). This allows the single device to perform both cursor movement and high-accuracy stroke data input, eliminating the need to switch between devices while maintaining ease of operation.
3Loss of information
If battery remaining level is displayed on screen, then information is provided, but the user frequently overlooks the display
Solution Approach 1:
The patent uses color changes in the displayed battery icon to indicate different battery levels. The icon changes from green to yellow to red as the battery level decreases, providing intuitive visual feedback that is difficult to overlook. This color-coded system makes battery status immediately recognizable without requiring the user to actively monitor numerical values.
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 high-accuracy stroke data input, wide imaging range, and easy battery level notification, enhancing user experience and device functionality.
Implementation Method 1
a waveguide that guides light from the light source to the reading surface and a waveguide that guides light reflected by the reading surface to the imaging element
Implementation Method 2
a waveguide that guides light from the light source to the reading surface and a waveguide that guides light reflected by the reading surface to the imaging element
Data Source
AI summary
Disclosed herein is a coordinate output device that outputs absolute coordinates indicating a position in a predetermined region or relative coordinates, according to a position indicated by a position indicator. The coordinate output device continues to output the relative coordinates while the absolute coordinates are not acquired, and starts output of the absolute coordinates and stops the output of the relative coordinates in response to acquisition of the absolute coordinates.