File Modification Tracking With Indication Fields for Accurate Deduplication

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Solution Overview

Problem

Electronic devices face file management bottlenecks due to increasing file storage demands, leading to reduced available storage space, and existing methods for managing files are inefficient and resource-intensive.

Innovation Solution

A file processing method that utilizes an indication field to track file modifications, allowing the device to determine file status without continuous monitoring, thereby reducing resource consumption and improving storage efficiency by accurately identifying and managing duplicate files.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If continuous monitoring of file modification status is implemented, then file management accuracy is improved, but resource consumption increases

Engineering Contradiction:

Improvefile modification detection accuracyVSAvoidresource consumption

Core Design Contradiction:

Measurement precisionVSUse of energy by moving object

Solution Approach 1:

The system performs periodic sampling of file modification status at specific time points (first moment and second moment) rather than continuous monitoring. The indication field value is checked at discrete intervals to determine if files were modified during the time period, reducing resource consumption while maintaining detection accuracy.

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

An indication field is introduced as an intermediary mechanism to track file modification status. This field stores modification information that can be queried without requiring continuous monitoring of actual file changes, thereby reducing system resource usage while maintaining accurate detection capability.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Quantity of substance

If duplicate files are identified and compressed to same storage space, then storage efficiency is improved, but risk of incorrect deduplication increases

Engineering Contradiction:

Improvestorage space utilizationVSAvoiddeduplication accuracy

Core Design Contradiction:

Quantity of substanceVSReliability

Solution Approach 1:

The system checks the indication field value at a second moment after initially setting it at a first moment. This preliminary verification step ensures that files have not been modified between the two sampling points before proceeding with deduplication operations, preventing incorrect compression of modified files.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system uses the indication field as a feedback mechanism to verify file status before deduplication. By comparing the indication field value at the second moment with the expected value, the system receives feedback on whether files remain unchanged, ensuring reliable deduplication decisions.

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS20250321934A1File processing method and electronic device

Publication Date: 2025.10.16 HUAWEI TECH CO LTD

AI summary

A file processing method applied to an electronic device the electronic device stores an indication field of a first file, an initial value of the indication field is a first value, and the indication field is modified to a second value by the electronic device when the first file is modified. The method includes: attempting to modify a value of the indication field of the first file to a third value at a first moment; if the value of the indication field of the first file is successfully modified to the third value, obtaining a value of the indication field at a second moment; and determining, based on the value of the indication field of the first file at the second moment, whether the first file is modified in a time period from the first moment to the second moment