Digital Evidence Management System with Automated Retention

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Solution Overview

Problem

Law enforcement agencies face challenges in securely managing and retaining large volumes of digital assets, such as video and audio recordings, as they require secure storage with a clear chain of custody and varying retention periods, which existing technologies struggle to address effectively.

Innovation Solution

A digital evidence management system that includes a service computing device capable of receiving and storing digital assets, generating metadata through analysis, and managing the flow and access of these assets according to chain of custody rules, with features like metadata tagging, secure transfer, and automated retention policies.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If digital assets are stored securely with chain of custody to prevent tampering, then evidence integrity is maintained, but storage capacity requirements increase significantly

Engineering Contradiction:
Improveevidence integrityVSAvoidstorage capacity
Core Design Contradiction:
ReliabilityVSVolume of stationary object

Solution Approach 1:

The system segments digital assets into different retention categories (e.g., indefinite retention for evidence, shorter retention for non-evidence). This allows selective application of secure storage protocols only to assets requiring long-term preservation, reducing overall storage capacity requirements while maintaining evidence integrity.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Different storage security levels and retention policies are applied to different digital assets based on their evidentiary status. Assets designated as evidence receive maximum security and indefinite retention, while non-evidence assets use standard storage with shorter retention periods, optimizing storage efficiency without compromising evidence integrity.

Inventive Principle:
Principle #3Local quality

2Volume of stationary object

If different retention periods are applied to different digital assets, then storage efficiency improves, but system complexity increases

Engineering Contradiction:
Improvestorage efficiencyVSAvoidsystem complexity
Core Design Contradiction:
Volume of stationary objectVSDevice complexity

Solution Approach 1:

The system automatically determines retention periods and applies appropriate storage policies based on automated analysis of digital assets. The system self-manages the classification and retention policy application without requiring manual intervention, reducing operational complexity while improving storage efficiency through differentiated retention periods.

Inventive Principle:
Principle #25Self-service

3Productivity

If automated analysis is performed on digital assets to generate metadata, then information retrieval efficiency improves, but processing time increases

Engineering Contradiction:
Improveinformation retrieval efficiencyVSAvoidprocessing time
Core Design Contradiction:
ProductivityVSLoss of time

Solution Approach 1:

The system performs automated analysis and generates metadata for digital assets during the initial ingestion phase, before the assets need to be retrieved or searched. This preliminary action ensures that metadata is already available when needed, improving information retrieval efficiency without adding delay during critical operations.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS10354348B2Digital evidence management
Publication Date: 2019.07.16 HITACHI VANTARA LLC
  • US10354348B2 patent drawing
  • US10354348B2 patent drawing
  • US10354348B2 patent drawing

AI summary

In some examples, analysis metadata may be generated for received digital assets based on analysis of content of the digital assets. As one example, a service computing device may receive and store a digital asset and first metadata for the digital asset. The service computing device may determining a content category of content of the digital asset, and may analyze the content of the digital asset based at least in part on the content category to obtain at least one analysis result as additional metadata for the digital asset. The service computing device may store the analysis result in association with the digital asset and may store analysis metadata in association with the first metadata.