Cordless Communication Mode Switching for Power Optimization

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Solution Overview

Problem

Cordless communication devices face challenges in maintaining communication quality in weak electric fields, particularly due to high power consumption in multi-slot mode, which shortens battery life.

Innovation Solution

A cordless communication apparatus with a communication mode setting unit that switches between single-slot and multi-slot modes based on detected communication conditions, using a main antenna and a sub-antenna, and an amplifier with adjustable gain to optimize power usage and quality.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If multi-slot mode is used to improve communication quality in weak electric fields, then communication reliability is improved, but power consumption increases and battery life decreases

Engineering Contradiction:
Improvecommunication qualityVSAvoidpower consumption
Core Design Contradiction:
ReliabilityVSUse of energy by moving object

Solution Approach 1:

The patent implements dynamic switching between single-slot mode and multi-slot mode based on real-time communication conditions. The system monitors communication quality indicators (such as bit error rate or signal strength) and automatically adjusts the slot usage mode, transitioning from static to dynamic operation to optimize both reliability and power consumption.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The system changes the operational parameter of time slot usage from fixed to variable. By adjusting the number of slots used (from one slot in single-slot mode to multiple slots in multi-slot mode) based on communication conditions, the system adapts its resource allocation to maintain quality while managing power consumption.

Inventive Principle:
Principle #35Parameter changes

2Stability of the object's composition

If multi-slot mode is used to maintain communication quality, then communication stability is improved, but available time of the cordless handset decreases

Engineering Contradiction:
Improvecommunication stabilityVSAvoidavailable time
Core Design Contradiction:
Stability of the object's compositionVSDuration of action of moving object

Solution Approach 1:

The system dynamically adjusts its operational mode based on communication stability requirements. When communication conditions are good, it operates in power-saving single-slot mode; when conditions deteriorate, it switches to stable multi-slot mode, thereby optimizing the duration of action under varying conditions.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent varies the time slot allocation parameter according to communication needs. By changing from using one time slot to using multiple time slots based on detected communication quality, the system maintains stability when necessary while extending available time during favorable conditions.

Inventive Principle:
Principle #35Parameter changes

3Use of energy by moving object

If single-slot mode is used to reduce power consumption, then battery life is extended, but communication quality deteriorates in weak electric fields

Engineering Contradiction:
Improvepower consumptionVSAvoidcommunication quality
Core Design Contradiction:
Use of energy by moving objectVSReliability

Solution Approach 1:

The system implements dynamic mode selection that responds to communication conditions. Rather than permanently operating in low-power single-slot mode, it transitions to multi-slot mode when communication quality thresholds are not met, ensuring reliability is maintained while minimizing power consumption during good conditions.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent adjusts the time slot usage parameter based on communication quality feedback. When quality is sufficient, it uses fewer slots (single-slot mode) to save power; when quality deteriorates in weak electric fields, it increases slot usage (multi-slot mode) to maintain communication reliability.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS7778223B2Cordless communication apparatus
Publication Date: 2010.08.17 BROTHER KOGYO KK
  • US7778223B2 patent drawing
  • US7778223B2 patent drawing
  • US7778223B2 patent drawing

AI summary

Whether the reception electric field level of the antenna #1 is higher than the predetermined level is judged. If the reception electric field level of the antenna #1 is not higher than the predetermined level, the communication mode is to be set to the multi-slot mode, and then whether the reception electric field level of the antenna #1 is higher is judged by comparison of the reception electric field level of the antenna #1 and the reception electric field level of the antenna #2. If the reception electric field level of the antenna #1 is higher, the call mode is to be set to the antenna #1 for executing transmission and reception, or if the reception electric field level of the antenna #1 is not higher, the communication mode is to be set to the antenna #2 for executing transmission and reception.