Wearable Analog-Digital Watch Synchronization via Stepper Motor Feedback
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Solution Overview
Problem
Conventional quartz analog watches often lack accurate hand synchronization, as the microcontroller may not know the precise position of the hour and minute hands after manual adjustment, leading to inaccuracies in displaying the correct time.
Innovation Solution
The implementation of a wearable electronic device with a digital display that can switch between transparent and opaque states, allowing for the synchronization of analog hands with digital indicators, using stepper motors and a microcontroller to rotate the hands accurately, and a receiver to obtain current time information for correction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual adjustment of analog hands is allowed, then ease of operation is improved, but hand synchronization accuracy deteriorates
Solution Approach 1:
The patent implements a feedback mechanism where the microcontroller continuously monitors the position of analog hands via sensors and compares it with the stored time data. When a discrepancy is detected (such as after manual crown adjustment), the system automatically generates correction signals to realign the hands with the accurate time, thus maintaining synchronization accuracy while preserving manual adjustability
Solution Approach 2:
The patent replaces purely mechanical hand adjustment mechanisms with an electromechanical system. The microcontroller uses electronic signals to control motor-driven hand positioning, allowing precise digital control of analog hand positions. This substitution enables the system to detect hand positions electronically and make accurate corrections, resolving the contradiction between manual operation and positioning precision
2Illumination intensity
If digital display is always opaque, then readability is improved, but synchronization visibility deteriorates
Solution Approach 1:
The patent implements a dynamic display system where the digital display's transparency state changes based on operational context. During normal operation, the display remains opaque for optimal readability. During synchronization operations, it becomes transparent to allow visual alignment between digital and analog indicators. This dynamic switching resolves the contradiction by providing the appropriate display state at the appropriate time
Solution Approach 2:
The patent employs periodic transparency cycles during synchronization procedures. The digital display alternates between opaque and transparent states at predetermined intervals, allowing users to periodically visualize the alignment between digital time indicators and analog hand positions. This periodic action maintains readability while enabling synchronization detection when needed
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 easy and accurate synchronization of analog hands with the correct time, improving time adjustability and providing accurate current time information on analog displays.
Implementation Method 1
a stepper motor, operatively coupled to the analog time indicator, wherein actuation of the stepper motor causes rotation of the analog time indicator in predefined increments
Data Source
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AI summary
A wearable electronic device having an analog display and a digital display. The device may include a receiver for receiving, from a remote source, current time information data representative of a current time; a controller, operatively coupled to the receiver, wherein the controller processes the current time information data received from the remote source and provides for the current time information data to be displayed by the at least one digital indicator on the digital display as the current time; and a an analog time indicator rotating arrangement for causing the rotation of the at least one analog time indicator until the at least one analog time indicator is aligned with the at least one digital indicator; whereby the alignment of the at least one analog time indicator with the at least one digital indicator indicates that the at least one analog time indicator is synchronized with the correct time information.