Electronic Timepiece Indicator Rotation Control
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Solution Overview
Problem
Portable electronic timepieces, such as wristwatches, face challenges in efficiently rotating multiple indicators to their desired positions due to limited size, weight, and battery capacity, often requiring a long time for combined indicator movements.
Innovation Solution
An electronic timepiece with a first and second indicator that rotate in combination, featuring an operation receiver and processor to temporarily stop and resume rotation based on user input, allowing the second indicator to indicate a set position quickly while the first indicator is rotating, thereby reducing user wait time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If multiple indicators rotate in combination with a common motor, then device complexity is reduced, but indication time increases
Solution Approach 1:
The patent applies dynamics by making the rotation speed of indicators variable rather than constant. The control unit adjusts the rotation speed of each indicator dynamically based on its priority and the current time, allowing high-priority indicators to rotate faster and reach their target positions more quickly, thus reducing overall indication time while maintaining a unified motor system
Solution Approach 2:
The patent implements periodic action through the cyclic rotation of indicators at different speeds. Each indicator rotates periodically around the dial, and the control unit manages their periodic movements to ensure that important information is displayed more frequently or with shorter waiting times, effectively reducing the perceived indication time for critical data
2Measurement precision
If indicators rotate continuously to desired positions, then indication accuracy is improved, but user wait time increases
Solution Approach 1:
The patent applies local quality by assigning different rotation speeds to different indicators based on their importance. Rather than uniform rotation, each indicator has a locally optimized speed characteristic - critical indicators rotate faster while less critical ones rotate slower, ensuring that users receive accurate information about important parameters without excessive waiting time
3Volume of moving object
If multiple indicators share a common motor, then device size is reduced, but rotation speed is limited
Solution Approach 1:
The patent applies parameter changes by varying the rotation speed parameter of indicators dynamically. The control unit changes the speed parameter of each indicator based on priority levels and time constraints, allowing the system to achieve faster rotation speeds for critical indicators without requiring additional motors or increasing device size, thus resolving the contradiction between compact size and rotation speed
Data Source
AI summary
An electronic timepiece includes: a first indicator and a second indicator that are configured to rotate in combination with each other; an operation receiver; and at least one processor. The at least one processor is configured to set a set position that is to be indicated by the second indicator in response to an input operation received by the operation receiver. The at least one processor is configured to cause the first indicator and the second indicator to temporarily stop rotating in combination with each other at a timing when the second indicator indicates the set position, and cause the first indicator and the second indicator to resume rotating in combination with each other after a set time passes.