Frame Metadata Recording Across Multiple Video File Regions

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Solution Overview

Problem

Existing image capturing devices face challenges in maintaining compatibility with different metadata structures across various moving image formats, necessitating a common metadata structure that can be recorded in multiple regions of a file.

Innovation Solution

An image capturing apparatus that generates metadata in units of frames and records it in multiple regions of a file, ensuring compatibility across different moving image formats by using both System Item and Data Item metadata structures.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a metadata structure is changed to support multiple moving image formats, then adaptability across formats is improved, but compatibility with existing devices deteriorates

Engineering Contradiction:

Improveadaptability across formatsVSAvoidcompatibility with existing devices

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent divides metadata recording into multiple regions within the file structure. Different metadata structures are recorded in separate regions (e.g., System Item region and Data Item region), allowing the file to maintain both legacy compatibility and new format support without requiring existing devices to parse the entire metadata structure.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent introduces a common metadata structure as an intermediary layer between legacy metadata formats and new moving image formats. This common structure acts as a mediator that existing devices can understand while also supporting extended formats, enabling seamless coexistence of different metadata standards within the same file.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Ease of operation

If a common metadata structure is used across different formats, then ease of operation is improved, but device complexity increases

Engineering Contradiction:

Improveease of metadata handlingVSAvoiddevice complexity

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The patent creates a universal metadata structure that serves multiple functions across different moving image formats. The same common metadata structure can be used for recording, reading, and processing various formats (e.g., MXF, AVCHD, MPEG-2), eliminating the need for separate handling mechanisms for each format and reducing operational complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS12549679B2Image capturing apparatus, method for controlling the same, and storage medium

Publication Date: 2026.02.10 CANON KK

AI summary

An image capturing apparatus capable of capturing a moving image generates metadata to be recorded at least in units of frames and records the metadata generated and a moving image data in one file. The image capturing apparatus performs control such that the metadata having the same content generated by the image capturing apparatus is recorded in a plurality of different regions of the one file.