Wearable Display Hand Oscillation for High Heart Rate Clarity

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Solution Overview

Problem

Existing wearable electronic devices that display pulse rate numerically struggle to intuitively convey high heart rates, as the small angle of hand rotation makes it difficult to grasp the pulsation, especially at rates above 180 beats per minute.

Innovation Solution

An electronic device that includes a processor to acquire pulsation data and control a display hand to oscillate with a standard rotation angle and period, allowing intuitive grasping of pulse rate through the amplitude and speed of hand movement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of information

If the hand is moved with substantially the same period as the pulse rate, then the pulse rate can be intuitively grasped, but the angle of hand rotation becomes too small to be visible when pulse rate is high

Engineering Contradiction:

Improveintuitiveness of pulse rate displayVSAvoidvisibility of hand rotation angle

Core Design Contradiction:

Loss of informationVSDifficulty of detecting and measuring

Solution Approach 1:

The patent changes the parameter of hand rotation angle from being fixed to being variable, adjusting it based on the pulse rate. When pulse rate is high, the rotation angle is increased to maintain visibility, while when pulse rate is low, the rotation angle is decreased to maintain intuitive correspondence. This resolves the contradiction by making the rotation angle adaptive rather than fixed.

Inventive Principle:

Principle #35Parameter changes

2Difficulty of detecting and measuring

If the hand rotation angle is increased to improve visibility, then the hand movement becomes easier to grasp, but the correspondence between hand movement and actual pulse rate is lost

Engineering Contradiction:

Improvevisibility of hand rotation angleVSAvoidaccuracy of pulse rate representation

Core Design Contradiction:

Difficulty of detecting and measuringVSLoss of information

Solution Approach 1:

The patent makes the hand rotation angle dynamic rather than static, allowing it to change based on the current pulse rate. The system continuously adjusts the rotation angle parameter to maintain both visibility and accuracy: higher angles for higher pulse rates, lower angles for lower pulse rates. This dynamic adaptation resolves the contradiction between visibility and accuracy.

Inventive Principle:

Principle #15Dynamics

3Loss of information

If the hand moves with the same period as pulse rate, then intuitive understanding is achieved, but at high pulse rates the movement becomes too rapid to be distinguished

Engineering Contradiction:

Improveintuitive grasp of pulse rateVSAvoidhand movement speed

Core Design Contradiction:

Loss of informationVSSpeed

Solution Approach 1:

The patent dynamically adjusts the hand movement period based on pulse rate. Instead of maintaining a fixed 1:1 correspondence that becomes imperceptible at high speeds, the system adapts the movement period to ensure the hand completes a distinguishable number of rotations within a fixed observation window (e.g., 10 seconds). This maintains intuitive understanding while ensuring visibility at all pulse rates.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS20230078626A1Electronic device, method for controlling hand, and recording medium

Publication Date: 2023.03.16 CASIO COMPUTER CO LTD

AI summary

An electronic device includes a display to display information with a hand and at least one processor, in which the processor is configured to acquire the number of pulsations of a living body during a predetermined period and control the display to express a pulsation period based on the acquired number of pulsations of the living body with the hand.