Multimode Wireless Synchronization Circuit Shared Delay Part

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Solution Overview

Problem

Conventional multimode wireless communication apparatuses with multiple radios for supporting various wireless communication methods face increased power consumption and circuit size due to the need to constantly check for communication capabilities across different methods, leading to inefficiencies in power management and circuit design.

Innovation Solution

A synchronization detecting circuit that shares a delay part among multiple wireless communication systems, using converting parts to adjust sampling frequencies and combine digital signals, allowing for simultaneous detection of synchronization timing across different communication methods, thereby reducing power consumption and circuit size.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple radios are used to support multiple wireless communication methods, then communication versatility is improved, but power consumption increases

Engineering Contradiction:

Improvecommunication versatilityVSAvoidpower consumption

Core Design Contradiction:

Adaptability or versatilityVSUse of energy by moving object

Solution Approach 1:

The patent combines the delay functions for multiple wireless communication systems into a single shared delay part. Instead of having separate delay circuits for each radio system, the invention merges them into one common resource that can be dynamically allocated to different systems as needed, thereby reducing overall circuit complexity and power consumption while maintaining support for multiple communication methods

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The shared delay part is designed to serve multiple wireless communication systems simultaneously. This universal component can be configured to handle different sampling frequencies and signal types through the converting parts, allowing one delay circuit to perform the functions that would otherwise require multiple separate circuits, thus reducing power consumption while maintaining versatility

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If multiple radios are used to support multiple wireless communication methods, then communication versatility is improved, but circuit size increases

Engineering Contradiction:

Improvecommunication versatilityVSAvoidcircuit size

Core Design Contradiction:

Adaptability or versatilityVSArea of stationary object

Solution Approach 1:

The patent merges multiple delay circuits into a single shared delay part that serves multiple wireless communication systems. This consolidation significantly reduces the circuit area required, as instead of having parallel delay circuits for each radio system, one shared resource handles all systems through time-division or frequency-division multiplexing controlled by the converting parts

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The shared delay part is designed as a universal component that can accommodate multiple wireless communication systems with different requirements. Through the converting parts that adjust sampling frequencies, this single delay circuit performs the functions of multiple specialized circuits, thereby reducing overall circuit size while maintaining support for diverse communication methods

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Use of energy by moving object

If control part controls on and off of power to radios, then power consumption is reduced, but synchronization detection capability deteriorates

Engineering Contradiction:

Improvepower consumptionVSAvoidsynchronization detection capability

Core Design Contradiction:

Use of energy by moving objectVSReliability

Solution Approach 1:

The patent implements preliminary synchronization detection by continuously monitoring signals from multiple wireless systems using the shared delay part, even when the main radio functions are turned off. The converting parts can adjust sampling frequencies to detect synchronization timing in advance, allowing the system to quickly activate the appropriate radio when needed without losing synchronization capability

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The shared delay part acts as an intermediary that maintains synchronization detection capability independent of the main radio power state. By processing signals through this shared resource with flexible sampling frequency adjustment, the system can detect synchronization timing from multiple systems without requiring all radios to be fully operational, thus maintaining detection capability while reducing power consumption

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS7907591B2Synchronization detecting circuit and multimode wireless communication apparatus

Publication Date: 2011.03.15 PANASONIC HOLDINGS CORP

AI summary

Multimode wireless communication apparatus supports plural wireless communication methods and includes synchronization detecting part. Digital signals output from first A/D part and second A/D part are combined by synchronization detecting part. Synchronization detecting part converts sampling frequencies of respective digital signals and performs other processes when combining digital signals. Synchronization detecting part detects synchronization timing for plural wireless communication methods by plurally performing correlation operation corresponding to respective wireless communication methods for digital signals combined, thereby providing a multimode wireless communication apparatus with its size and power consumption reduced.