Rotary Display Optical Signal Transfer for High-Speed Image Stability

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Solution Overview

Problem

Rotary display devices face challenges in providing high-resolution images in real time to a rotating portion due to deteriorating image signal sensitivity and noise interference from wireless transmission at high speeds.

Innovation Solution

A rotary display device design incorporating a fixed portion with a motor, input unit, and light emitting unit, and a rotary portion with a light receiving unit, utilizing optical signal transmission through a hollow rotary shaft to maintain image quality and reduce noise.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the rotation speed of the rotary portion is increased to provide high-resolution images in real time, then the image display quality is improved, but the wireless data reception sensitivity deteriorates

Engineering Contradiction:

Improveimage display refresh rateVSAvoidwireless data reception sensitivity

Core Design Contradiction:

ProductivityVSMeasurement precision

Solution Approach 1:

The patent replaces the wireless RF communication system with an optical signal transmission system. The light emitting unit converts image data into optical signals that are transmitted through the rotary shaft to the light receiving unit, eliminating the need for wireless data reception during rotation. This substitution of transmission medium (from electromagnetic RF waves to optical signals through a medium) resolves the contradiction by making data transmission independent of rotation speed.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent introduces an optical signal as an intermediary carrier for image data transmission. Instead of directly receiving wireless RF signals during rotation, the system uses optical signals that can be transmitted through the rotary shaft structure. This intermediary approach allows high-speed rotation while maintaining reliable data transmission, as the optical signals are not affected by the rotational motion in the same way RF signals are.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Manufacturing precision

If the rotation speed of the rotary portion is increased to display high-resolution images, then the image resolution is improved, but noise interference from peripheral circuits increases

Engineering Contradiction:

Improveimage resolutionVSAvoidnoise interference

Core Design Contradiction:

Manufacturing precisionVSObject-affected harmful factors

Solution Approach 1:

The patent replaces the wireless RF reception system with an optical signal transmission system. By transmitting image data through optical signals via the rotary shaft rather than receiving wireless signals during rotation, the system eliminates noise interference from peripheral circuits that would be generated or intensified at high rotation speeds. This substitution removes the source of noise while enabling high-resolution image display.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Productivity

If smaller light-emitting diodes are used to enable higher rotation speeds, then the display resolution is improved, but the wireless transmission reliability decreases

Engineering Contradiction:

Improverotation speedVSAvoidwireless transmission reliability

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent replaces the wireless transmission system with an optical signal transmission system through the rotary shaft. This eliminates the reliability issues associated with wireless transmission at high rotation speeds. The optical signals are transmitted through a physical medium (the rotary shaft) rather than through wireless space, making the transmission reliable regardless of rotation speed or LED size.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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 high-resolution image transmission to a rotating portion at high speeds with improved signal sensitivity and reduced noise interference, ensuring clear and stable image display.

Implementation Method 1

a light emitting unit for emitting an optical signal corresponding to the image data

Methodology Applied

Scientific EffectLight-emitting diode (LED): Light Emitting Diode

Implementation Method 2

a light emitting diode (LED), which is a semiconductor light-emitting element

Methodology Applied

Scientific EffectElectroluminescence: Electroluminescence

Implementation Method 3

a light receiving unit provided on a rotary shaft of the motor to receive the optical signal

Methodology Applied

Scientific EffectPhotoelectric conversion: Photoelectric Effect

Data Source

PatentUS12536927B2Rotating display device using semiconductor light-emitting element

Publication Date: 2026.01.27 LG ELECTRONICS INC

AI summary

A rotating display device according to an embodiment comprises a fixed module and a rotation module rotatably connected to the fixed module, wherein the fixed module includes a motor for rotationally driving the rotation module, an input unit for receiving image data, and a light-emitting unit for emitting an optical signal corresponding to the image data, and the rotation module includes a light-receiving unit provided on the rotary shaft of the motor to receive the optical signal, and a light source module for outputting the image data received as the optical signal.