Set-Top Box Standby Mode IP Address Management
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Solution Overview
Problem
Set-top boxes in passive standby state lose network connection due to inactivated background functions, disrupting broadcasting services and increasing standby power consumption.
Innovation Solution
A method involving a power management server that monitors state changes of set-top boxes and sends state change commands to maintain network connections by transitioning the set-top box from passive standby to active standby, allowing continuous IP address allocation or extension, ensuring uninterrupted broadcasting services while reducing power usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the set-top box enters passive standby state to reduce power consumption, then standby power consumption is reduced, but network connection is lost
Solution Approach 1:
The system performs preliminary actions by having the set-top box send state information to the power management server before completely entering passive standby state. The power management server receives this information and prepares to maintain network connection by allocating or extending IP address lease time, ensuring network connectivity is preserved even when the set-top box is in low-power mode
Solution Approach 2:
The power management server acts as an intermediary between the set-top box and the DHCP server. It receives state information from the set-top box, determines whether to maintain network connection, and communicates with the DHCP server to allocate or extend IP address lease time, thereby maintaining network connectivity without requiring the set-top box to remain in high-power state
2Reliability
If the set-top box remains in active standby state to maintain network connection, then network connection is maintained, but standby power consumption increases
Solution Approach 1:
The system changes the parameter of IP address lease time instead of changing the power state. The power management server extends the lease time of the IP address allocated to the set-top box, allowing the set-top box to maintain network connection and receive EPG information while remaining in low-power passive standby state, thereby reducing power consumption without sacrificing network connectivity
3Loss of energy
If the set-top box enters passive standby state, then power consumption is reduced, but EPG information update is disrupted
Solution Approach 1:
The system ensures continuity of useful action by maintaining the set-top box's ability to receive EPG information even in passive standby state. The power management server extends the IP address lease time and maintains network connection, allowing the set-top box to continuously receive EPG information updates from the headend without interruption, while consuming minimal power
Data Source
AI summary
A method of acquiring an Internet protocol (IP) address to control a standby mode of a set-top box, and the set-top box and a power management server performing the method are disclosed. The method may include determining whether a state of the set-top box changes from a broadcasting state in which a broadcasting service is provided to a passive standby state in which a network connection between the set-top box and a headend providing the broadcasting service is blocked, receiving state information associated with an IP address allocated to the set-top box for the network connection in response to the state of the set-top box changing to the passive standby state, and transmitting, to the set-top box, a state change command to maintain the network connection for the IP address allocated to the set-top box based on the received state information.