Interface Board Power Control for Image Display Apparatus

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Solution Overview

Problem

Image display apparatuses face issues with unstable operation due to excessive power supply when high-power interface boards are connected, leading to potential damage or unavailability due to single board failures, and lack of flexibility in terminal connections.

Innovation Solution

The image display apparatus includes a control unit that determines the type and number of connected interface boards, restricting power supply accordingly to prevent excessive power and allowing for the addition or replacement of interface boards, enabling selective enabling/disabling of input terminals and ensuring appropriate power distribution.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple interface boards are connected to expand functionality, then adaptability is improved, but power consumption increases and may cause unstable operation

Engineering Contradiction:

Improveinterface board connectivityVSAvoidpower consumption

Core Design Contradiction:

Adaptability or versatilityVSUse of energy by moving object

Solution Approach 1:

The power supply system dynamically adjusts power allocation based on the number and type of connected interface boards. The control unit detects board insertion and automatically modifies power supply levels, transitioning from a static power distribution system to a dynamic one that adapts to changing operational requirements.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system changes power supply parameters (voltage, current) according to the detected interface board type and quantity. Different interface boards receive different power levels optimized for their specific requirements, preventing both power deficiency and excessive power consumption.

Inventive Principle:

Principle #35Parameter changes

2Adaptability or versatility

If interface boards can be freely added for flexibility, then adaptability is improved, but reliability deteriorates due to potential excessive power supply

Engineering Contradiction:

Improveinterface board additionVSAvoidoperation stability

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The control unit continuously monitors the connection status of interface boards and provides feedback to the power supply unit. When an interface board is detected, the system automatically adjusts power supply parameters; when removed, it restores previous settings. This closed-loop feedback mechanism ensures reliable operation by preventing both power deficiency and excessive power supply.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The system performs preliminary detection of interface board type and specifications before full power supply is activated. This preliminary action allows the control unit to pre-calculate appropriate power levels, preventing excessive power supply that could cause instability or damage.

Inventive Principle:

Principle #10Preliminary action

3Reliability

If all connected interface boards receive full power supply, then reliability is improved, but power consumption increases excessively

Engineering Contradiction:

Improveinterface board operationVSAvoidtotal power consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

Instead of providing uniform power supply to all interface boards, the system applies local quality by giving each interface board the specific power level it requires based on its type and operational needs. This localized power allocation ensures each board receives sufficient power for reliable operation while minimizing total system power consumption.

Inventive Principle:

Principle #3Local quality

4Ease of operation

If connection terminals are built-in for convenience, then ease of operation is improved, but device complexity increases and space is consumed

Engineering Contradiction:

Improveconnection convenienceVSAvoidinternal structure

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The system segments the connection functionality by providing a standardized main connection terminal and allowing interface boards to be added only when needed. This segmentation separates the essential built-in functionality from optional expandable features, maintaining simplicity for basic operations while enabling complexity only when required by the user.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS10726809B2Image display apparatus and control method therefor

Publication Date: 2020.07.28 SEIKO EPSON CORP

AI summary

An image display apparatus includes a display unit that displays an image, a connection unit connected to a replaceable interface board and communicating with an external apparatus via the interface board; and a control unit that determines a type of the interface board connected to the connection unit and restricts power supply to the interface board based on the type of the interface board.