Cloud Service Device Multi-Image Preview Mechanism
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Solution Overview
Problem
Existing technologies are unable to provide a multi-image preview function during video playback, resulting in a poor user experience for internet video users.
Innovation Solution
A cloud service device with function modules such as a receiving module, calculating module, positioning module, image generating module, and data transmitting module processes messages from a multimedia device to calculate and transmit multiple images for preview, allowing users to view multiple images at specified time intervals and numbers during video playback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If single image preview function is implemented, then user can preview one image at a time, but user experience is poor due to inability to preview multiple images simultaneously
Solution Approach 1:
The preview function is segmented into multiple independent image display units, allowing simultaneous display of multiple images at different time points. Each image is extracted and displayed as a separate entity in the playback interface, enabling users to view multiple preview images without interfering with each other.
Solution Approach 2:
The preview function transitions from a single-dimensional sequential display to a multi-dimensional simultaneous display. Multiple images are arranged in different positions and layers within the playback interface, creating a spatial dimension for comparing multiple time points at once.
2Ease of operation
If multi-image preview is implemented, then user experience is enhanced, but system complexity increases due to multiple function modules required
Solution Approach 1:
The cloud service device is designed with multi-functional modules that can handle multiple tasks simultaneously. The receiving module accepts various types of requests, the calculating module processes different parameters, and the transmitting module sends diverse data, all within a unified system architecture that reduces overall complexity.
Solution Approach 2:
The cloud service device acts as an intermediary between the multimedia device and the user, centralizing the complex processing tasks. By introducing this intermediate layer, the system manages complexity internally while presenting a simplified interface to users, absorbing the structural complexity within the service device itself.
3Loss of information
If multiple images are transmitted for preview, then user can view more content, but network bandwidth and transmission time increase
Solution Approach 1:
Only the essential preview image data is extracted and transmitted from the video stream, separating the preview functionality from the full video data. This extraction approach transmits only the necessary image frames at selected time points, reducing the total data volume while maintaining preview information completeness.
Solution Approach 2:
The system transmits a partial set of images selected from the complete video stream, focusing on key time points rather than all frames. This partial transmission approach provides sufficient preview information for user decision-making without the excessive data transmission required for complete video content.
Data Source
AI summary
A cloud service device includes a data center that stores video preview images. A first message requesting previewing multiple images from is received from a multimedia device. Multiple offsets corresponding to the multiple images according to the first time interval and the first image number are calculated and time points corresponding to the multiple images according to the multiple offsets and the first preview time point are calculated. The multiple images from the data center according to the calculated time points are obtained and transmitted to the multimedia device to preview.