Multimedia Recording via Segmented Data Streams
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Solution Overview
Problem
Existing methods for recording and broadcasting multimedia teaching or conference content are cumbersome, require high server and client performance, consume significant bandwidth, and fail to efficiently manage and protect copyrighted materials, leading to storage and playback issues, especially over wireless networks.
Innovation Solution
A method and system that records and broadcasts multimedia content by separating audio and motion data streams from an electronic whiteboard, using a unified timestamp and encryption, allowing for real-time recording and on-demand playback across various networks, reducing storage needs and bandwidth requirements, and incorporating SSL encryption for secure data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional recording methods are used to record and broadcast multimedia teaching content, then the recording functionality is achieved, but the system requires high server and client performance, consumes significant bandwidth, and becomes cumbersome to operate
Solution Approach 1:
The patent segments the multimedia teaching content into distinct data streams: audio data stream, motion data stream (for electronic whiteboard operations), and document data stream. Each stream is processed and transmitted independently, allowing for optimized handling of each type of data and reducing overall system complexity requirements.
Solution Approach 2:
The patent extracts and separates the essential teaching content elements (audio, motion, document data) from the complete multimedia stream, transmitting only these core components rather than entire video files. This extraction approach significantly reduces bandwidth consumption and storage requirements while maintaining recording functionality.
2Reliability
If complete multimedia streams are recorded and transmitted, then playback quality is maintained, but storage space and bandwidth consumption increase significantly
Solution Approach 1:
The patent extracts only the essential teaching content data (audio, motion coordinates, document operations) from complete multimedia streams. Instead of storing entire video files, the system stores and transmits only the extracted data streams that can be reconstructed into teaching content, dramatically reducing storage space while maintaining playback quality for educational purposes.
Solution Approach 2:
The patent changes the representation parameters of teaching content from complete video frames to simplified data streams (audio samples, motion coordinates, document state changes). This parameter transformation reduces data volume significantly while preserving the essential teaching information needed for quality playback.
3Ease of operation
If streaming media is used for real-time playback, then on-demand access is achieved, but bandwidth requirements become prohibitively high, especially over wireless networks
Solution Approach 1:
The patent extracts and transmits only the essential teaching content data streams rather than complete video streams. This extraction reduces bandwidth consumption by a significant factor while maintaining on-demand access capability, making real-time playback feasible over wireless networks with limited bandwidth.
Solution Approach 2:
The patent segments teaching content into separate data streams (audio, motion, document) that can be transmitted independently and reassembled at the client side. This segmentation allows for efficient bandwidth utilization and enables on-demand playback of specific content elements without requiring high overall bandwidth.
4Adaptability or versatility
If copyrighted teaching materials are distributed freely, then accessibility is improved, but copyright protection is compromised
Solution Approach 1:
The patent extracts and transmits only processed data streams rather than original copyrighted materials in their complete form. This extraction approach allows for wide distribution and accessibility of teaching content while the processed nature of the data streams provides a degree of copyright protection by making direct copying and redistribution of original materials more difficult.
Data Source
AI summary
The present disclosure provides effective recording and broadcasting method and system. The recording of function operation of using multimedia whiteboard, speech/speaking voice, communication voice for communication with other users and/or guiding etc. by user during network teaching or online conference is realized, and different data streams are formed respectively, the various data streams are labeled with unified time stamp created by network teaching system, which replaces completely recording the whole event in streaming media format. In this way, network users can conveniently download various data streams to be broadcasted from cloud server or local area network server through network anytime and anywhere, after acquiring data stream, client on user terminal reproduces the acquired data stream according to time stamp and organically combines them to broadcast and displays them to user, thereby finishing broadcasting on demand and browsing.