Semiconductor Memory RF Tag Duplicate Data Nullification

Solution Overview

Problem

Semiconductor memories with radio communication functions, particularly passive RF tags, often experience communication errors leading to repeated processing of the same data, resulting in abnormal operations such as image data length increase or multiple sensor values being stored at a given time due to retransmissions caused by weakened signal strength.

Innovation Solution

A semiconductor memory system with a radio communication processor that receives data with identification information, a controller to detect normal application processing, and another controller to nullify further processing if the same data is retransmitted due to communication errors, ensuring that only successfully processed data is acknowledged as complete.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Use of energy by moving object

If passive RF tag transmits response signal with weakened signal strength, then power consumption is reduced, but communication reliability deteriorates causing frequent communication errors

Engineering Contradiction:

Improvepower consumptionVSAvoidcommunication reliability

Core Design Contradiction:

Use of energy by moving objectVSReliability

Solution Approach 1:

The system performs preliminary detection of communication errors and implements retransmission before final data processing occurs. The reader detects missing response signals, determines communication errors have occurred, and retransmits the same data before the tag processes application data, preventing duplicate processing while maintaining energy efficiency.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system implements a feedback mechanism where the reader monitors for response signals from the tag, detects when responses are missing (indicating communication errors), and triggers retransmission accordingly. This feedback loop ensures reliable communication while allowing the passive tag to maintain low power consumption by not processing retransmitted data.

Inventive Principle:

Principle #23Feedback

2Reliability

If reader-writer retransmits data due to communication error, then communication reliability is improved, but data integrity deteriorates causing duplicate processing

Engineering Contradiction:

Improvecommunication reliabilityVSAvoiddata integrity

Core Design Contradiction:

ReliabilityVSLoss of information

Solution Approach 1:

The system performs preliminary detection of communication errors and implements retransmission before final data processing occurs. The reader detects missing response signals, determines communication errors have occurred, and retransmits the same data before the tag processes application data, preventing duplicate processing while maintaining energy efficiency.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system applies preliminary anti-action by preventing the tag from processing retransmitted data. The tag detects whether received data is a retransmission and nullifies application processing for that data, counteracting the potential harmful effect of duplicate processing before it can occur.

Inventive Principle:

Principle #9Preliminary anti-action

3Reliability

If semiconductor memory processes same data multiple times due to retransmission, then communication robustness is improved, but operational correctness deteriorates causing abnormal operations

Engineering Contradiction:

Improvecommunication robustnessVSAvoidoperational correctness

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The system applies preliminary anti-action by preventing the tag from processing retransmitted data. The tag detects whether received data is a retransmission and nullifies application processing for that data, counteracting the potential harmful effect of duplicate processing before it can occur.

Inventive Principle:

Principle #9Preliminary anti-action

Solution Approach 2:

The system performs preliminary detection of communication errors and implements retransmission before final data processing occurs. The reader detects missing response signals, determines communication errors have occurred, and retransmits the same data before the tag processes application data, preventing duplicate processing while maintaining energy efficiency.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS10360415B2Semiconductor memory having radio communication function and application control method

Publication Date: 2019.07.23 RAMXEED LTD

AI summary

A radio communication processor receives data to which identification information is assigned and transmits a response signal indicative of whether or not application processing based on the data is normally performed. An application controller controls the application processing on the basis of the data and detects whether or not the application processing is normally performed. A controller detects on the basis of the identification information that the same data are received in succession due to retransmission, nullifies, when the application controller detects that the application processing based on the data received earlier is normally performed, control of the application processing based on the data received later to be performed by the application controller and instructs the radio communication processor to transmit the response signal which indicates that the application processing is normally performed.