Set-Top Box Standby Power Cutoff via Timer and Circuit Breaker
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Solution Overview
Problem
Existing set-top boxes consume significant standby power, and previous solutions are rendered ineffective by the standardization of active and passive standby modes, which limits the ability to update firmware and Electronic Program Guide (EPG) in passive standby mode.
Innovation Solution
A system that includes a set-top box with a timer and circuit breaker to cut off standby power after a preset time, allowing for updates even in passive standby mode by activating network connections and switching between low-power and active modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the set-top box operates in passive standby mode to reduce power consumption, then power consumption is reduced, but the ability to update firmware and EPG is lost
Solution Approach 1:
The system dynamically switches between passive standby mode and active mode based on operational requirements. The CPU transitions from a low-power state in passive standby to a fully active state when updates are needed, allowing the set-top box to optimize power consumption during normal standby while maintaining update capability when necessary
Solution Approach 2:
The system performs preliminary actions by checking for update signals while in passive standby mode. When an update signal is detected, the system proactively transitions to active mode to perform the update, rather than waiting for a full power-on state, thus reducing unnecessary power consumption while ensuring updates are performed
2Adaptability or versatility
If the set-top box continuously operates in active standby mode to maintain update capability, then update capability is maintained, but power consumption increases
Solution Approach 1:
The system performs only the necessary minimum action required for updates by transitioning to active mode temporarily when update signals are detected. Instead of maintaining continuous active standby operation, the system performs partial actions (brief active mode activation) only when needed, significantly reducing power consumption while ensuring updates are performed
3Use of energy by moving object
If a timer is driven to cut off standby power after preset time, then power consumption is reduced, but the ability to receive update signals is lost
Solution Approach 1:
The system performs preliminary action by detecting update signals while still in passive standby mode before the timer triggers power cutoff. This allows the system to check for updates in advance and transition to active mode if needed, preventing loss of update information while maintaining power savings from the timer mechanism
4Use of energy by moving object
If the CPU operates in low-power mode during passive standby, then power consumption is reduced, but network connection and update detection become difficult
Solution Approach 1:
The system dynamically adjusts the CPU operating state based on detected signals. While maintaining low-power mode during passive standby, the system can transition the CPU to a higher operational state when network signals or update signals are detected, enabling the system to balance power consumption with the ability to detect and respond to network communications
Data Source
AI summary
A system for providing a set-top box standby power cutoff service is provided, and includes a timer configured to count a preset time after switching to a standby state, and a circuit breaker configured to cut off standby power when there is no input signal and the set-top box is not in operation after the elapse of the preset time counted by the timer.