Power Receiving Apparatus Safety Compliance Detection

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Solution Overview

Problem

Existing power transmission systems using USB standards lack clear methods for users to determine whether power transmitting apparatuses, cables, or both do not properly support the USB standard, posing safety risks during high-power transfers.

Innovation Solution

A power receiving apparatus with a determination unit to assess the safety compliance of connected power transmitting apparatuses and cables, displaying specific information to indicate non-compliance, allowing users to identify and address potential safety issues.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If C-AUTH authentication communication is performed to verify USB standard compliance, then safety of power transmission is improved, but ability to identify which component (power transmitting apparatus or cable) is non-compliant deteriorates

Engineering Contradiction:
Improvesafety of power transmissionVSAvoididentification of non-compliant component
Core Design Contradiction:
ReliabilityVSLoss of information

Solution Approach 1:

The patent segments the authentication process into two distinct phases: first authenticating the power transmitting apparatus, then authenticating the cable. This segmentation allows the system to identify which specific component fails authentication, resolving the information loss about non-compliant components while maintaining safety through comprehensive verification.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent implements feedback mechanisms where the power receiving apparatus provides distinct notifications to the user indicating whether the power transmitting apparatus or the cable failed authentication. This feedback loop preserves information about which component is non-compliant, enabling users to take appropriate corrective actions while maintaining the safety benefits of authentication.

Inventive Principle:
Principle #23Feedback

2Ease of operation

If power transmission is performed without verifying USB standard compliance, then ease of operation is improved, but safety of power transmission deteriorates

Engineering Contradiction:
Improveconvenience of power connectionVSAvoidsafety of power transmission
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The patent performs authentication of the power transmitting apparatus and cable before allowing high-power transmission to commence. This preliminary action ensures safety verification is completed in advance, while the automatic nature of the authentication process maintains ease of operation for users who simply need to connect and use their devices.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The power receiving apparatus automatically performs authentication and safety verification without requiring user intervention. The system self-services by conducting C-AUTH authentication, determining compliance, and controlling power transmission parameters automatically, thus maintaining ease of operation while ensuring safety through comprehensive verification.

Inventive Principle:
Principle #25Self-service

Data Source

PatentUS11662396B2Power receiving apparatus, control method, and storage medium
Publication Date: 2023.05.30 CANON KK
  • US11662396B2 patent drawing
  • US11662396B2 patent drawing
  • US11662396B2 patent drawing

AI summary

A power receiving apparatus includes a determination unit and a display unit. The determination unit determines whether or not each of a power transmitting apparatus and a cable connected to the power receiving apparatus meets a predetermined condition relating to safety of power transmission. The display unit displays first information indicating that the power transmitting apparatus does not meet the predetermined condition in a case where the power transmitting apparatus does not meet the predetermined condition. The display unit displays second information indicating that the cable does not meet the predetermined condition in a case where the cable does not meet the predetermined condition.