Network Device Power Saving Mode Protocol Filtering

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Solution Overview

Problem

Conventional network devices struggle to maintain power saving mode effectively due to improper packet handling, leading to unnecessary cancellation and reduced energy savings, with users finding existing power saving control techniques complex and difficult to customize.

Innovation Solution

A network device with a receiving unit, setting unit, and recovering unit that receives data packets, sets recovery conditions based on the protocol, and recovers from power saving mode accordingly, allowing users to enhance power saving effects without specialized knowledge.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Speed

If the network device automatically returns to normal operation mode upon receiving any packet, then the device responds quickly to potential work requests, but the power saving mode cannot be maintained for sufficient time due to improper packets

Engineering Contradiction:

Improveresponse speedVSAvoidelectric power consumption

Core Design Contradiction:

SpeedVSLoss of energy

Solution Approach 1:

The control unit analyzes the protocol type of each received packet and provides feedback to determine whether to cancel the power saving mode. Only packets with specific protocols that indicate actual work requests will trigger mode switching, while other packets are ignored, allowing the power saving mode to be maintained appropriately.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The device changes the parameter of protocol type recognition to differentiate between proper and improper packets. By identifying specific protocol characteristics, the system can intelligently determine whether a received packet warrants cancellation of the power saving mode, thus balancing responsiveness with energy conservation.

Inventive Principle:

Principle #35Parameter changes

2Loss of energy

If the network device includes a filtering section to determine and abandon unauthorized packets, then the power saving mode can be maintained more effectively, but the control techniques become specialized and complicated

Engineering Contradiction:

Improveelectric power consumptionVSAvoidcontrol technique complexity

Core Design Contradiction:

Loss of energyVSDevice complexity

Solution Approach 1:

The control unit automatically performs protocol analysis and decision-making without requiring user intervention or specialized knowledge. The device serves itself by intelligently identifying proper packets and maintaining power saving mode appropriately, simplifying the user experience while achieving effective power management.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The control unit integrates multiple functions including packet reception, protocol analysis, power saving mode control, and automatic decision-making into a single component. This multi-functionality reduces overall system complexity while maintaining effective power management capabilities.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Productivity

If the network device cancels power saving mode in response to any incoming packet, then all packets are processed, but unnecessary packets invalidate or weaken the power saving mode function

Engineering Contradiction:

Improvepacket processing completenessVSAvoidpower saving mode reliability

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS7543165B2Network device, power saving mode processing method, storage medium storing computer programs, and programs

Publication Date: 2009.06.02 CANON KK

AI summary

A method for controlling a network device includes a receiving step of receiving a data packet complying with a predetermined protocol via a network, a setting step of setting recovery conditions corresponding to the protocol of the received data packet, and a recovering step of recovering the network device from a power saving condition according to the recovery conditions set in the setting step.