Reciprocating Hand Notification for Electronic Timepiece Input Errors
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Solution Overview
Problem
In electronic timepieces with limited hand movement ranges, users are not adequately notified when attempting to move hands beyond the display range, leading to unrecognized input errors.
Innovation Solution
An electronic timepiece with a reciprocating hand that rotates within a partial angle range, equipped with a processor that performs a notification operation when the hand's destination is out of the range, including a swing back operation to indicate the limit, allowing users to recognize and correct invalid operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a hand is configured to rotate only within a partial angle range for display purposes, then the display function is achieved, but the user cannot recognize when input continues beyond the range
Solution Approach 1:
The patent implements a feedback mechanism where the hand performs a notification operation (swing back motion) when the input destination is out of the display range. This swing back operation provides visual feedback to the user that the input has exceeded the valid range, resolving the information loss problem while maintaining the limited rotation range for normal display operations.
2Device complexity
If the hand simply moves out of range without notification, then the operation is simple, but the user does not recognize the input error
Solution Approach 1:
The patent applies partial action by implementing a swing back operation that moves the hand slightly beyond the display range and then returns it. This excessive motion serves as a notification mechanism without requiring complex additional components, thus maintaining device simplicity while improving input recognition reliability.
3Loss of information
If additional markings are added to indicate the movement range, then user recognition is improved, but the device complexity increases
Solution Approach 1:
The patent employs self-service by using the hand's own motion (swing back operation) to indicate the range limit, rather than adding external markings or indicators. The hand itself serves as the indication mechanism, eliminating the need for additional display elements and maintaining structural simplicity while providing clear range information to the user.
Data Source
AI summary
An electronic timepiece, including: a reciprocating hand which is provided to be rotatable only within a partial angle range of a circle; and a processor which acquires information according to an operation of the reciprocating hand, and makes the reciprocating hand perform a predetermined notification operation when a destination of the reciprocating hand is out of the angle range, the destination being determined on the basis of the information.