Controller Prioritizes Power to Display Ports
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Solution Overview
Problem
Power supplied from an electronic device to external devices is limited, leading to issues where power may not be supplied to target devices in the correct sequential order, particularly affecting display devices, which can result in difficulties with input operations due to lack of display content.
Innovation Solution
An electronic device with multiple connection ports and a controller that assigns priority levels to each port, along with a receiver and determiner to identify and prioritize power supply to display devices based on identification information, ensuring power is supplied to display devices regardless of connection order.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If power is supplied to external devices in the order of connection, then the sequential connection order is maintained, but display devices may not receive power when connected after non-display devices
Solution Approach 1:
The controller performs preliminary identification of display devices among connected external devices and pre-determines their priority level before executing power supply. This preliminary action ensures that display devices are recognized and prioritized in advance, preventing the problem where display devices connected after non-display devices fail to receive power.
Solution Approach 2:
Different connection ports are assigned different priority levels based on whether they are connected to display devices or non-display devices. The controller selectively supplies power to connection ports with higher priority levels (display devices) over connection ports with lower priority levels (non-display devices), creating localized quality differentiation in power distribution.
2Device complexity
If power supply priority is assigned based on connection order, then the control logic is simple, but display devices may not receive power when connected after other devices
Solution Approach 1:
The controller executes preliminary identification of display devices and assignment of priority levels before the power supply decision is made. This preliminary action simplifies the subsequent power supply control logic by pre-establishing the priority hierarchy, while reliably ensuring that display devices receive power regardless of connection sequence.
Solution Approach 2:
The system incorporates feedback from identification information about connected devices to dynamically adjust power supply decisions. The controller receives feedback on device types, determines priority levels accordingly, and uses this feedback to control power supply, ensuring display devices are prioritized while maintaining manageable control logic.
3Adaptability or versatility
If multiple external devices are connected simultaneously, then the device versatility is improved, but power supply conflicts arise between different device types
Solution Approach 1:
The power supply control is segmented into priority levels based on device type. The controller divides connected devices into high-priority groups (display devices) and low-priority groups (non-display devices), then manages power distribution separately for each segment, allowing multiple devices to be connected simultaneously without power conflicts.
Solution Approach 2:
Different quality levels of power supply are provided to different device types. Display devices receive preferential power supply treatment compared to non-display devices, creating local quality differentiation in the power distribution system that enables versatile multi-device connectivity without power conflicts.
Data Source
AI summary
An electronic device includes: a plurality of connection ports to which external devices are able to be connected; and a controller configured to control whether or not to supply power to an external device connected to a connection port in preference to an external device connected to another connection port on the basis of a priority level assigned to each of the plurality of connection ports.