Watch Time Adjustment via Optical Luminous Coding

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Solution Overview

Problem

Mechanical watches require manual adjustment using motors and gearing, leading to inaccuracy and discrepancies in time information display, while electronic watches lack a reliable method for automatic time adjustment.

Innovation Solution

A method using a portable device with a microcontroller, camera, and communication module to detect discrepancies in time information displayed on a watch and send correction signals via phototransistors, allowing for automatic synchronization with an external time source using luminous coding and optical modulation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If manual adjustment using motors and gearing is used in mechanical watches, then time adjustment can be performed, but inaccuracy and discrepancies occur

Engineering Contradiction:
Improvetime information accuracyVSAvoidmanual adjustment complexity
Core Design Contradiction:
Measurement precisionVSEase of operation

Solution Approach 1:

The patent replaces the mechanical adjustment system (motors and gearing) with an optical communication system. A portable device displays luminous-coded time information that is optically transmitted to the watch, which then automatically adjusts its time display without mechanical intervention, eliminating the inaccuracies associated with manual mechanical adjustment.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The watch system automatically receives and processes time information from the portable device without requiring manual intervention. The microcontroller automatically decodes the luminous signal and adjusts the time display, enabling the system to self-correct time discrepancies without user involvement.

Inventive Principle:
Principle #25Self-service

2Measurement precision

If electronic components are added to enable automatic adjustment, then time accuracy improves, but device complexity increases

Engineering Contradiction:
Improvetime information accuracyVSAvoidelectronic component count
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent introduces a portable device as an intermediary that bridges the time source and the watch. This external device handles the complex functions of timekeeping and signal generation, allowing the watch itself to remain relatively simple while still achieving accurate time display through the optical communication interface.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent replaces complex mechanical adjustment mechanisms with a simpler optical reception system in the watch. The watch only needs to detect luminous signals and update its display, which is electronically simpler than the mechanical motors and gearing required for manual adjustment.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Extent of automation

If optical transmission is used to send time information, then automatic adjustment is enabled, but signal detection reliability must be ensured

Engineering Contradiction:
Improveautomatic time adjustmentVSAvoidsignal detection accuracy
Core Design Contradiction:
Extent of automationVSReliability

Solution Approach 1:

The patent implements a feedback mechanism where the portable device captures an image of the watch display to verify that the time information was correctly received and displayed. This closed-loop verification ensures the reliability of the optical transmission and automatic adjustment process.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The patent uses luminous coding with distinct visual patterns (black and white sequences) to encode time information. These high-contrast visual signals are easily detectable by the phototransistor and minimize detection errors, ensuring reliable signal reception even in varying lighting conditions.

Inventive Principle:
Principle #32Color changes

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 accurate and automatic adjustment of time information on watches, reducing manual errors and ensuring precise timekeeping.

Implementation Method 1

the timepiece comprising at least one phototransistor arranged on the case for receiving this time information

Methodology Applied
Scientific EffectPhotoelectric Effect: Photoelectric Effect

Implementation Method 2

a display module... sequentially displaying black or white in the entirety of the area or the entirety of a portion of this area, in a sequence of black and white corresponding to a luminous coding of the time information

Methodology Applied
Scientific EffectLight Emitting Diode: Light Emitting Diode

Data Source

PatentUS10884381B2Method for automatically adjusting a piece of time information on a watch
Publication Date: 2021.01.05 ETA SA MFG HORLOGERE SUISSE
  • US10884381B2 patent drawing
  • US10884381B2 patent drawing
  • US10884381B2 patent drawing

AI summary

A method for adjusting a timepiece including: providing a portable object including a screen and a camera; testing accuracy of a piece of time information of the timepiece by using the camera of the portable object to compare with a piece of time information obtained from an external source; sending the time information from the portable object to the timepiece if a difference is detected, the timepiece including at least one phototransistor arranged at a case for receiving the time information, the timepiece to display the correct time information, the sending including: defining on the screen of the portable object an area of shape and dimensions similar to the case of the timepiece; holding the case of the timepiece against the area; sequentially displaying black or white in the area, in a sequence of black and white corresponding to a luminous coding of the time information.