Dual Power Playback Control for Display Continuity
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Solution Overview
Problem
Playback control systems experience reliability issues due to transient power losses during switchover between power supply circuits, leading to display interruptions when one power supply fails.
Innovation Solution
A playback control system with dual power supply circuits and playback control devices, where one device takes over from the failed circuit to maintain display functionality, ensuring at least one device remains powered during failures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single power supply circuit is used to power the playback control device, then the device complexity is reduced, but the system reliability deteriorates due to power failures causing display interruptions
Solution Approach 1:
The power supply system is segmented into multiple independent power supply circuits (first power supply circuit and second power supply circuit), each capable of independently powering the playback control device. This segmentation allows the system to maintain reliability through redundancy while keeping each individual power supply circuit relatively simple in structure.
Solution Approach 2:
The system changes the parameter of power supply configuration from single to multiple circuits. By introducing a switching mechanism that can change the operational state of power supply circuits (active/standby switching), the system achieves higher reliability without proportionally increasing overall complexity, as the circuits share common structural elements.
2Reliability
If multiple power supply circuits are implemented for redundancy, then the system reliability improves, but the device complexity increases
Solution Approach 1:
Multiple power supply circuits are merged into a unified power supply system with common control and switching mechanisms. The first and second power supply circuits share common structural elements, control logic, and switching components, which reduces the overall complexity compared to having completely separate independent systems. This merging allows the system to achieve redundancy while maintaining manageable complexity.
3Loss of time
If power supply switching is implemented to maintain display functionality, then the loss of time during power failures is reduced, but the device complexity increases due to switching mechanisms
Solution Approach 1:
The system performs preliminary action by pre-configuring multiple power supply circuits and establishing switching mechanisms in advance. When a power failure occurs in one circuit, the switching mechanism can immediately activate the standby power supply circuit without requiring complex real-time decision-making or complicated switching operations. This preliminary preparation minimizes display interruption time while keeping the switching mechanism relatively simple.
Data Source
AI summary
Provided is a playback control system, including a first playback control device, a second playback control device, a first power supply circuit, a second power supply circuit, and a power supply. The first power supply circuit is configured to supply power to the first playback control device using a first utility power. The second power supply circuit is configured to supply power to the second playback control device using the first utility power. The power supply is configured to supply power to a first target playback control device in response to a power failure in a first target power supply circuit. The first target power supply circuit is the first power supply circuit. The first target playback control device is the first playback control device. Alternatively, the first target power supply circuit is the second power supply circuit. The first target playback control device is the second playback control device.