Position Sensor Layout Using Motion Input Without Extra Sensors
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Solution Overview
Problem
Conventional portable devices require multiple sensors for detecting different state changes, leading to a complex configuration, as motion sensors are primarily used only for rotating the display image and not for other operations.
Innovation Solution
A position detection device with a position detection sensor, including a position detection region and motion sensors, where a flexibly displaceable part connects the motion sensors, allowing multiple operations without button inputs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple types of sensors are provided on the electronic paper to detect different state changes, then various operations can be performed, but the configuration becomes complicated
Solution Approach 1:
The patent applies universality by enabling a single motion sensor to perform multiple functions through software processing. The sensor detects various motion patterns (shaking, rotating, tilting) and the processing unit distinguishes between different operations based on the same sensor data, eliminating the need for separate sensors for each operation type.
Solution Approach 2:
The patent uses parameter changes by analyzing different characteristics of motion signals from a single sensor. By detecting variations in acceleration patterns, frequency, amplitude, and duration, the system can distinguish between different operations (shaking vs. rotating vs. tilting) using the same hardware sensor with different detection parameters.
2Device complexity
If motion sensors are used only for rotating the display image, then the sensor usage is simple, but other operations cannot be performed
Solution Approach 1:
The patent transforms the single-function motion sensor into a multi-functional input device. The same sensor that rotates the display image is also used to detect shaking operations for image deletion, tilting for page turning, and other gestures, thereby achieving multiple operations without adding more sensors.
Solution Approach 2:
The patent applies dynamics by making the sensor functionality adaptable and flexible. The processing unit dynamically interprets sensor data based on the current context and operation mode, allowing the sensor to serve different purposes (display rotation, image deletion, page turning) depending on how the motion is detected and processed.
Data Source
AI summary
A position detection device includes a position detection sensor including a position detection region corresponding to an instruction input surface for receiving an instruction input by an indicator, a position detection circuit which, in operation, detects at least a position of an instruction in the position detection region of the position detection sensor based on an interaction of the position detection sensor and the indicator, and a plurality of motion sensors. The position detection sensor includes a flexibly displaceable part that is deformable together with the instruction input surface according to an operation of a user, and the flexibly displaceable part is disposed between two of the motion sensors.