Signal Receiver Loop-Through Switch Unit Sleep Mode Power

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Solution Overview

Problem

Multimedia devices with loop-through RF signals face high power consumption during sleep mode due to additional electronic components like low noise amplifiers and attenuators, which is a compliance issue with power consumption regulations.

Innovation Solution

A signal receiver design incorporating a switch unit, low noise amplifier, power divider, and attenuator that operates in different modes to bypass the amplifier during sleep mode, reducing power consumption by shutting it down or putting it in a power-saving mode while maintaining loop-through functionality.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If additional electronic components (LNA, attenuator) are included in the loop-through function, then the loop-through capability is improved, but power consumption during sleep mode increases

Engineering Contradiction:
Improveloop-through capabilityVSAvoidpower consumption during sleep mode
Core Design Contradiction:
Adaptability or versatilityVSUse of energy by moving object

Solution Approach 1:

The patent applies dynamics by making the signal path configurable through switch units that can dynamically change the signal flow between different modes (first mode with LNA and second mode without LNA). This allows the system to adapt its architecture based on operational requirements, enabling the loop-through function to be achieved with minimal power consumption by bypassing the LNA when not needed.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent segments the signal processing path into distinct segments (switch units, LNA, power divider, attenuator) that can be independently controlled. By using switch units to selectively connect or disconnect the LNA from the signal path, the system can maintain loop-through capability while excluding the power-consuming LNA during sleep mode, thus resolving the contradiction between functionality and power consumption.

Inventive Principle:
Principle #1Segmentation

2Use of energy by moving object

If the LNA is shut down during sleep mode to reduce power consumption, then power consumption is reduced, but signal amplification capability is lost

Engineering Contradiction:
Improvepower consumptionVSAvoidsignal amplification capability
Core Design Contradiction:
Use of energy by moving objectVSReliability

Solution Approach 1:

The system dynamically switches between two operational states: during normal operation, the LNA is activated to provide signal amplification; during sleep mode, the LNA is deactivated to save power. The switch units dynamically reconfigure the signal path to bypass the LNA during sleep mode, maintaining loop-through functionality without requiring amplification, thus resolving the contradiction between power consumption and signal amplification capability.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent changes the operational parameters of the signal receiver by switching between different modes (first mode with LNA activation, second mode with LNA deactivation). This parameter change allows the system to optimize for power consumption during sleep mode while maintaining the ability to provide signal amplification when needed, thus resolving the contradiction between power savings and functional capability.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS8427585B2Receiving apparatus and receiving method thereof
Publication Date: 2013.04.23 REALTEK SEMICON CORP
  • US8427585B2 patent drawing
  • US8427585B2 patent drawing
  • US8427585B2 patent drawing

AI summary

The present invention discloses a signal receiver and a method thereof. The signal receiver utilizes a switch unit to regulate a loop-through, where the complete function of the loop-through is accomplished even during a sleep mode, which reduces power consumption of the signal receiver.