Display Device Circuit for USB Type-C EPR Capability Feedback
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Solution Overview
Problem
Existing display devices cannot determine and indicate whether a USB Type-C transmission line supports the Extended Power Range (EPR) specification, leading to users being unaware if their device is being charged correctly.
Innovation Solution
A display device equipped with a determination circuit, processor, and tips circuit that identifies the power supply type of the USB Type-C transmission line and displays a prompt image if it does not support EPR, using a connection port, determination circuit, processor, and tips circuit to provide status signals and images.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the transmission line does not support EPR specification, then the display device cannot charge the electronic device with high power, but the transmission line looks the same as EPR-supporting lines making it indistinguishable to users
Solution Approach 1:
The patent uses different LED indicator colors (e.g., green for EPR support, red for non-EPR) to visually represent the transmission line's power supply capability. This allows users to immediately distinguish between EPR and non-EPR lines without needing technical knowledge, resolving the information loss while maintaining system reliability
Solution Approach 2:
The determination circuit continuously monitors the transmission line's EPR capability and provides real-time feedback through the tips circuit display. This feedback mechanism ensures users are always informed of the current charging capability status, preventing failed charging attempts and improving overall system reliability
2Loss of information
If the display device displays a power supply type prompt image, then users can know the transmission line capability, but the device complexity increases due to additional determination circuit, processor logic, and tips circuit
Solution Approach 1:
The determination circuit is integrated into the existing connection port functionality, allowing it to serve dual purposes: normal data/power transmission and EPR capability detection. The tips circuit uses the existing display interface, making it multi-functional without requiring entirely separate systems, thus limiting complexity increase
Solution Approach 2:
The patent introduces a determination circuit as an intermediary component that sits between the connection port and the processor. This intermediary handles the complex detection logic independently, simplifying the processor's role to just reading status values and triggering displays, thereby managing overall device complexity
3Ease of operation
If the display device continuously monitors transmission line capability, then the user experience is improved with real-time information, but the energy consumption increases due to continuous monitoring and display operations
Solution Approach 1:
The determination circuit performs EPR capability detection at periodic intervals rather than continuously, such as when connection status changes or at scheduled intervals. The tips circuit only updates the display when capability status changes, reducing energy consumption while maintaining good user experience through timely information provision
Data Source
AI summary
A display device includes a connection port, a determination circuit, a processor, and a tips circuit. In response to the connection port being connected to a transmission line, the determination circuit provides a first status signal, determines a power supply type of the transmission line, and provides a power supply type status value according to the power supply type. The processor reads the power supply type status value according to the first status signal, determines whether the power supply type meets an expected power supply type according to the power supply type status value, and provides a power supply type tips signal in response to the power supply type not meeting the expected power supply type. The tips circuit controls the display device to display a power supply type prompt image in response to the power supply type tips signal. An operating method for a display device is also disclosed.