Metronome Light Display Control for Beat Timing

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing electronic metronomes struggle to clearly convey beat timing, especially at different tempos, making it difficult for users to easily grasp the rhythm.

Innovation Solution

A display control device that sets a tempo and changes the display form of light emitted from a light source unit, transitioning between different display forms at specific beat timings, with a constant period length of less than one beat of the fastest tempo, ensuring clear visualization of the beat timing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If the light projection period is made long to allow users to grasp the beat timing, then the visibility of beat timing is improved, but the response speed for fast tempos deteriorates

Engineering Contradiction:

Improvebeat timing visibilityVSAvoidtempo response speed

Core Design Contradiction:

Measurement precisionVSSpeed

Solution Approach 1:

The patent applies periodic action by using a fixed-duration light projection period that is shorter than one beat of the fastest tempo. This periodic light projection occurs at regular intervals corresponding to beat timings, creating a consistent visual rhythm that is clearly visible while maintaining the ability to respond to fast tempos. The periodic nature ensures that each beat is marked by a distinct light pulse of adequate duration for perception.

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The patent changes the parameter of light projection duration to be a fixed value shorter than one beat of the fastest tempo, regardless of the actual tempo being played. This parameter change resolves the contradiction by ensuring the light is visible long enough to be perceived (improving beat timing visibility) while keeping the duration short enough to maintain responsiveness to fast tempos without overlapping or blurring subsequent beats.

Inventive Principle:

Principle #35Parameter changes

2Speed

If the light projection period is shortened to respond to fast tempos, then the tempo response speed is improved, but the beat timing visibility deteriorates

Engineering Contradiction:

Improvetempo response speedVSAvoidbeat timing visibility

Core Design Contradiction:

SpeedVSMeasurement precision

Solution Approach 1:

The patent establishes a periodic light projection pattern with a fixed period shorter than one beat of the fastest tempo. This periodic action ensures that even at the fastest tempo, each beat is marked by a complete, distinct light pulse that maintains adequate visibility. The regularity of this periodic action prevents any single beat from being too short to perceive while still allowing the system to keep up with fast tempos.

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The patent applies preliminary action by pre-determining the light projection period to be an optimal fixed duration that works for all tempos. This pre-established parameter is set in advance to be shorter than one beat of the fastest tempo, ensuring that the system is prepared to handle the most demanding (fastest) tempo while maintaining adequate visibility. This preliminary setting eliminates the need to adjust the light duration dynamically, ensuring consistent performance across all tempo ranges.

Inventive Principle:

Principle #10Preliminary action

3Adaptability or versatility

If different light projection durations are used for different tempos, then the adaptability to various tempos is improved, but the device complexity increases

Engineering Contradiction:

Improvetempo adaptabilityVSAvoidcontrol system complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent applies universality by using a single, fixed light projection period that is shorter than one beat of the fastest tempo. This universal parameter works for all tempos without requiring different settings or configurations. The same light projection duration serves multiple functions: it is visible enough for slow tempos and fast enough for rapid tempos, eliminating the need for tempo-specific adjustments and simplifying the control system.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent uses preliminary action by pre-setting the light projection period to a fixed value that is optimal for the fastest tempo before the metronome actually operates. This pre-determined parameter is chosen to be shorter than one beat of the fastest tempo, ensuring it will work for all slower tempos as well. This preliminary configuration eliminates the need for complex real-time adjustments, reducing device complexity while maintaining universal adaptability across all tempo ranges.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS20250104680A1Display control device, display device, method, and storage medium

Publication Date: 2025.03.27 CASIO COMPUTER CO LTD

AI summary

A display control device includes: a memory that stores a program; and at least one processor that executes the program stored in the memory, wherein the processor: controls a light source unit, sets one tempo from among a plurality of tempos, and changes a display form of light emitted from the light source unit and projected on a display section from a third display form to a first display form according to a first beat timing of the set tempo, a first period in which the light is projected while being changed between the third display form and the first display form has a constant length regardless of the set tempo, and the constant length is a length of less than one beat of a fastest tempo among settable tempos.