Rotation Sensor Signal Correction for Rotary Bezel Input
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Solution Overview
Problem
Electronic devices with rotation members, such as wheel keys and rotary bezels, face errors in sensing rotation inputs due to varying rotation speeds, leading to inaccuracies in user interactions.
Innovation Solution
An electronic device with a housing, a rotatably positioned circular structure, first and second sensors, and a processor that detects and corrects rotation signals to reflect actual rotation, enabling precise input recognition and performing actions based on corrected signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a rotation member is used in a compact electronic device, then the device can provide rotation input functionality, but sensing errors occur due to varying rotation speeds
Solution Approach 1:
The patent implements a feedback mechanism where the processor receives rotation sensing data from the optical sensor, compares it with expected rotation patterns, and corrects sensing errors by adjusting the interpreted rotation input based on the detected discrepancies caused by varying rotation speeds
Solution Approach 2:
The patent changes the parameter interpretation approach by not relying solely on raw sensor data but instead transforming the sensing data through correction algorithms that account for rotation speed variations, thereby maintaining measurement precision across different operating conditions
2Extent of automation
If optical sensors are used to detect rotation, then rotation input can be sensed, but errors occur when rotation speed varies
Solution Approach 1:
The system continuously monitors rotation sensing data and provides feedback to the processor, which then adjusts the interpretation of rotation inputs by comparing actual sensor readings with expected patterns, correcting errors that arise from speed variations
Solution Approach 2:
The patent introduces dynamic adjustment mechanisms where the rotation sensing threshold and interpretation parameters are adaptively modified based on the detected rotation speed, allowing the system to maintain reliability across static and dynamic operating conditions
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
The solution effectively corrects rotation input errors, providing accurate sensing and feedback to users, enhancing interaction reliability and usability in compact electronic devices.
Implementation Method 1
an electronic device may sense an optical pattern of a rotation member using an optical sensor including a light receiver and a light emitter
Data Source
AI summary
The present disclosure relates to a method of sensing rotation of a rotation member and an electronic device performing the method, wherein the electronic device may include: a housing including one side having a substantially circular opening; a substantially circular structure configured to be rotatably positioned in or around the opening of the housing; a first sensor configured to detect a first rotation of the structure to generate a first signal; a second sensor configured to detect a second rotation of the structure, to generate a second signal; a processor coupled to the first sensor and the second sensor; and a memory coupled to the processor, wherein the memory includes instructions to enable the processor, on execution, to detect the rotation of the structure based on at least a part of the first signal or a part of the second signal, to correct the first signal to reflect actual rotation of the structure, and to perform a predetermined action based on at least part of the corrected first signal.