Processing Device Power Source Switching Mechanism
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Solution Overview
Problem
Peripheral devices often suffer damage due to the collision of operation power from adapters and host power transmitted through connection cables, leading to power interference.
Innovation Solution
A processing device with a control unit and switching unit that determines the power source based on the type of connection device, switching between external and host power to prevent simultaneous power reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the processing device receives both operation power from an adapter and host power from a connection cable simultaneously, then the device can operate with sufficient power supply, but the collision of two power sources damages the peripheral device
Solution Approach 1:
The patent introduces a switching unit as an intermediary component between the power sources and the control unit. This switching unit receives control signals from the control unit to selectively connect either the external power source or the host power source to the control unit, preventing direct collision of the two power sources. The switching unit acts as a mediator that ensures only one power source is active at a time, thereby protecting the device from power damage while maintaining adequate power supply.
2Adaptability or versatility
If the processing device uses a connection cable that can transmit both data and power, then the device can communicate with the host device, but the device may receive conflicting power signals from both the cable and external adapter
Solution Approach 1:
The patent implements a feedback mechanism where the control unit detects the presence and status of both external power sources and host power through the connection cable. Based on this feedback information, the control unit generates appropriate control signals to the switching unit, instructing it to select the appropriate power source. This feedback-based control ensures that the device can adapt to different connection scenarios (with or without external adapter) while preventing power conflicts by making informed switching decisions.
Data Source
AI summary
A processing device coupled to a host device via a connection device and including a connection port, a control unit and a switching unit is disclosed. The connection port connects to the connection device. The control unit controls a switching signal according to the kind of the connection device when the connection port is coupled between the connection port and the host device. The switching unit transmits an external power to the control unit according to the switching signal. When the switching unit transmits the external power to the control unit, the control unit operates according to the external power provided by an external device. When the switching unit does not transmit the external power to the control unit, the control unit operates according to a host power provided by the host device.