Video Segment Description Data for Rapid Region Visualization

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Solution Overview

Problem

Conventional video distribution systems, such as those using Content Delivery Networks (CDNs), face delays in rendering entire video regions due to the need to acquire and buffer video data segments, making it difficult to visually check the video promptly.

Innovation Solution

A system that generates and provides description data for requesting spatially and timely segmented moving image segments, including a still image of the entire video region, allowing for quicker acquisition and visual checking, using a transmission apparatus with units for video data acquisition, segmentation, still image generation, and playlist creation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If video data segments are acquired and buffered before playback to prevent buffer underrun, then playback reliability is improved, but the time to visually check the video region is increased

Engineering Contradiction:
Improvebuffer underrun preventionVSAvoidvideo region visualization time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The video data is divided into multiple segments, each corresponding to a specific video region and time period. The playlist contains URLs for multiple segments, allowing the reception apparatus to selectively acquire only the necessary segments for the desired region, rather than buffering entire video data.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Instead of acquiring and buffering complete video data segments for the entire region, the system allows partial acquisition of only the necessary video segments corresponding to the region of interest. This reduces the amount of data that must be buffered before playback can begin.

Inventive Principle:
Principle #16Partial or excessive action

2Area of stationary object

If video data for the entire video region is acquired to enable wide-range playback, then coverage area is improved, but data transmission time is increased

Engineering Contradiction:
Improvevideo region coverageVSAvoiddata acquisition time
Core Design Contradiction:
Area of stationary objectVSLoss of time

Solution Approach 1:

The video data is divided into multiple segments, each corresponding to a specific video region and time period. The playlist contains URLs for multiple segments, allowing the reception apparatus to selectively acquire only the necessary segments for the desired region, rather than buffering entire video data.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Different segments in the playlist correspond to different video regions with different characteristics. The system allows selective acquisition of segments based on the specific region of interest, optimizing data transmission by only providing locally relevant video data rather than entire region data.

Inventive Principle:
Principle #3Local quality

Data Source

PatentUS11290511B2Providing apparatus, data providing method, and storage medium
Publication Date: 2022.03.29 CANON KK
  • US11290511B2 patent drawing
  • US11290511B2 patent drawing
  • US11290511B2 patent drawing

AI summary

A providing apparatus includes a generation unit configured to generate description data describing address information to request one or more of a plurality of first segments acquired by spatially and timely segmenting a moving image, and address information to request a second segment corresponding to a spatial region broader than the first segment and a providing unit configured to provide the description data generated by the generation unit to a client apparatus.