Buffered Receiving Circuit for Missed Sync Frame Prevention

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Solution Overview

Problem

Conventional wireless communication devices face signal omission issues during power-saving modes, particularly in emergency systems, due to intermittent signal detection, leading to missed synchronization frames and incomplete demodulation of reception signals.

Innovation Solution

A receiving circuit and method that includes a buffer to store data when the signal level is below a threshold, allowing for demodulation to commence once the signal level reaches the threshold, thereby preventing signal omission by buffering data and ensuring complete demodulation of the reception signal.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Use of energy by moving object

If intermittent signal detection is used to reduce power consumption, then power efficiency is improved, but signal reception reliability deteriorates due to possible omission of head parts

Engineering Contradiction:

Improvepower consumptionVSAvoidsignal reception reliability

Core Design Contradiction:

Use of energy by moving objectVSReliability

Solution Approach 1:

The receiving circuit performs preliminary actions by continuously storing received signal data in a buffer even before the signal level reaches the threshold, so that when the threshold is met, the head part of the signal is already captured and ready for demodulation, preventing signal omission while maintaining power-saving intermittent detection

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The buffer acts as an intermediary between the receiver and demodulation processor, temporarily holding signal data and coordinating the transition from power-saving mode to active demodulation mode, ensuring seamless signal reception without omission

Inventive Principle:

Principle #24Intermediary (Mediator)

2Use of energy by moving object

If the receiver operates in power saving mode with limited functions, then power consumption is reduced, but signal processing capability deteriorates

Engineering Contradiction:

Improvepower consumptionVSAvoidsignal processing capability

Core Design Contradiction:

Use of energy by moving objectVSProductivity

Solution Approach 1:

The receiving circuit dynamically adjusts its operational state based on signal conditions, transitioning from power-saving mode with limited functions to full signal processing mode when the signal level threshold is met, optimizing the balance between power consumption and processing capability

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The buffer stores signal data in advance during power-saving operation, so when full processing is needed, the data is already prepared and can be immediately demodulated without delay, maintaining productivity while preserving power-saving benefits

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS9967826B2Receiving circuit, receiving device including the same, and receiving method

Publication Date: 2018.05.08 JVC KENWOOD CORP

AI summary

A receiving circuit includes a receiver configured to receive a signal, a detector configured to detect arrival of a reception signal based on a signal received by the receiver, a buffer configured to store therein data corresponding to the reception signal, a demodulation processor configured to demodulate data to be supplied, and a controller configured to store the data corresponding to the reception signal in the buffer when the detector does not detect the arrival of the reception signal, and to supply the data stored in the buffer to the demodulation processor when the detector detects the arrival of the reception signal.