Electronic Pen Position Detection Using Electronic Tag Identification
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Solution Overview
Problem
Existing systems for inputting location information using electronic pens in mobile devices face challenges such as reliance on GPS, which is unreliable indoors and in moving vehicles, and require pre-registration of location information, limiting their applicability and accuracy.
Innovation Solution
An electronic pen and position detection apparatus that transmit identification information along with position detection signals, allowing the association of instruction positions with specific identification data, enabling flexible and accurate location-based processing without relying on GPS, even in dynamic environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If GPS positioning is used to acquire position information, then position information can be obtained in outdoor environments, but the system cannot acquire position information in indoor places where GPS radio waves cannot be received
Solution Approach 1:
The patent introduces an electronic tag transmitter as an intermediary device that emits identification information. Instead of relying directly on GPS signals which fail indoors, the system uses this intermediary tag transmitter to provide alternative identification data that can be received by the electronic pen even in indoor environments where GPS radio waves are blocked.
Solution Approach 2:
The patent replaces the GPS radio wave-based positioning system with an electronic tag identification system. The electronic tag transmitter emits identification information that is detected by the electronic pen, substituting the mechanical/electromagnetic GPS signal reception with a different electromagnetic communication method that works in indoor environments.
2Reliability
If GPS positioning is used, then position information can be obtained, but the position information has errors that reduce the reliability of comparison results
Solution Approach 1:
The patent creates a copy of the identification system by placing electronic tag transmitters at specific locations. Instead of relying on imprecise GPS coordinates, the system uses exact location copies in the form of electronic tags at predetermined positions, allowing for more accurate location identification and comparison.
3Reliability
If location information is pre-registered in storage means, then verification can be performed, but the system requires re-registration when planned location changes and cannot be applied to moving bodies
Solution Approach 1:
The patent makes the location identification system dynamic by allowing electronic tag transmitters to be moved and repositioned. When planned locations change, the electronic tags can be physically relocated to new positions and begin transmitting new identification information, eliminating the need for complex re-registration processes while maintaining verification reliability.
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 reliable and flexible processing of input information by associating instruction positions with identification data, improving accuracy and applicability in various settings, including indoor locations and moving vehicles.
Implementation Method 1
an electronic tag transmitter that transmits first identification information
Implementation Method 2
Examples of a coupling system between the electronic pen and the position detection apparatus include various systems, such as an electromagnetic induction coupling system
Data Source
AI summary
An electronic pen includes: a receiver that receives tag information transmitted from an electronic tag transmitter; a transmitter that transmits a position detection signal for detecting an instruction position in a sensor of a position detection apparatus to the position detection apparatus; and a control circuit that controls the transmitter to transmit the tag information to the position detection apparatus along with the position detection signal when the receiver receives the tag information. The position detection apparatus receives a signal transmitted from the electronic pen, the signal including the tag information and the position detection signal from the electronic tag transmitter, and stores information of the position instructed by the electronic pen detected by the detection circuit in a storage device in association with the tag information from the electronic pen received by the sensor.