Projection Unit Object Detection for Automatic Display Control

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Current electronic devices with projection units require cumbersome operations to adjust or stop the projection display, either through software interfaces or additional hardware switches, which increases complexity and hardware costs while compromising device thickness and user experience.

Innovation Solution

An electronic device with a projection unit that detects objects within a preset distance range using sensors, generating instructions to adjust or stop the projection display, thereby simplifying user interactions by leveraging built-in or external detection units like distance sensors, light sensors, or cameras to manage projection settings automatically.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If a software switch interface is used to control projection display, then the projection unit can be controlled without additional hardware, but the user operation becomes troublesome and complex

Engineering Contradiction:
Improvehardware complexityVSAvoiduser operation ease
Core Design Contradiction:
Device complexityVSEase of operation

Solution Approach 1:

The system automatically detects objects in the projection path and controls the projection display without requiring user interaction. The projection unit serves itself by using the detecting unit to monitor the environment and automatically adjust its operation state based on detected objects, eliminating the need for complex software interface operations.

Inventive Principle:
Principle #25Self-service

2Ease of operation

If a hardware switch is added to control projection display, then the user operation becomes simple, but the hardware cost increases and the device becomes thicker

Engineering Contradiction:
Improveuser operation easeVSAvoidhardware complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The detecting unit, originally designed for other purposes, is utilized to also control the projection display. This multi-functional use of existing components eliminates the need for dedicated hardware switches, maintaining simple user operation through automatic detection while avoiding additional hardware complexity.

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Length of stationary object

If the hardware switch is made small to reduce device thickness, then the device becomes thinner, but the difficulty in operating the switch increases

Engineering Contradiction:
Improvedevice thicknessVSAvoidswitch operation ease
Core Design Contradiction:
Length of stationary objectVSEase of operation

Solution Approach 1:

The system performs automatic control through the detecting unit without requiring manual switch operation. This eliminates the trade-off between switch size and operability, as no physical switch is needed - the system serves itself by automatically detecting objects and adjusting projection display accordingly.

Inventive Principle:
Principle #25Self-service

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

This solution reduces the complexity of user operations by allowing for intuitive control of projection displays through simple object detection, enhancing user experience and reducing hardware requirements, thus improving efficiency and device usability.

Implementation Method 1

detecting, in a projection direction of the electronic device, a presence of an object within a preset distance range from a projection unit

Methodology Applied
Scientific EffectLight reflection: Reflection

Data Source

PatentUS9848175B2Projection method and electronic device
Publication Date: 2017.12.19 LENOVO (BEIJING) LTD
  • US9848175B2 patent drawing
  • US9848175B2 patent drawing

AI summary

A projection method of an electronic device, includes detecting the presence of an object within a preset distance range from a projection unit of the electronic device, generating a projection adjusting instruction if an object is detected within the preset distance range from the projection unit, and adjusting a projection display of the projection unit in response to the projection adjusting instruction.