Portable Projector Heat Management via Image Data Processing

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Solution Overview

Problem

Portable projectors face issues with heat generation when projecting no-signal images, potentially leading to overheating and damage, especially when accidentally powered on while carried in a bag.

Innovation Solution

A processing method that calculates a heat quantity value for projected image data and adjusts the image data to ensure the heat generated is below a threshold value, using a separate image processing apparatus or integrated processor within the projector to generate processed image data for safe projection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Illumination intensity

If image data is projected with high brightness to improve visibility, then projection quality is improved, but heat generation increases causing overheating risk

Engineering Contradiction:
Improveprojection brightnessVSAvoidheat quantity
Core Design Contradiction:
Illumination intensityVSTemperature

Solution Approach 1:

The system performs preliminary processing of no-signal projection images to reduce their heat quantity before projection. By pre-calculating and adjusting the image data to meet heat quantity thresholds, the system prevents overheating while maintaining visibility, thus resolving the contradiction between projection brightness and heat generation.

Inventive Principle:
Principle #10Preliminary action

2Ease of operation

If the projector is made portable to improve mobility, then ease of operation is improved, but heat dissipation becomes more difficult leading to overheating

Engineering Contradiction:
ImproveportabilityVSAvoidheat quantity
Core Design Contradiction:
Ease of operationVSTemperature

Solution Approach 1:

The portable projector performs preliminary processing on no-signal images to reduce their heat quantity before projection. This pre-adjustment ensures that even in the confined space of a portable device with limited heat dissipation capability, the projected images do not cause overheating, thus enabling safe portable operation.

Inventive Principle:
Principle #10Preliminary action

3Productivity

If the projector projects images continuously to improve productivity, then output is improved, but heat accumulation increases causing damage risk

Engineering Contradiction:
Improveprojection continuityVSAvoiddevice safety
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The system performs preliminary processing on all no-signal projection images to ensure they meet heat quantity thresholds before projection. This pre-adjustment allows the projector to operate continuously without heat accumulation, as each projected image is guaranteed to be within safe heat parameters, thus improving both productivity and reliability.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS11448948B2Processing method of image data, projection apparatus, processing apparatus of image data
Publication Date: 2022.09.20 CASIO COMPUTER CO LTD
  • US11448948B2 patent drawing
  • US11448948B2 patent drawing
  • US11448948B2 patent drawing

AI summary

In a processing method of image data in accordance with an embodiment of the present invention, a processor of an information processing apparatus calculates a heat quantity value when projecting and displaying image data, determines the image data as an image to be projected and displayed when the heat quantity value does not reach a threshold value, and generates processed image data so that a heat quantity is to be lower than the heat quantity value and determines the processed image data as an image to be projected and displayed when the heat quantity value exceeds the threshold value.