Text-to-Speech Converter for Broadcast Video Description
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Solution Overview
Problem
Providing video-descriptive services for visually impaired individuals is cost- and bandwidth-prohibitive due to the significant amount of space or bandwidth required for an additional audio track.
Innovation Solution
A system and method that generates a data signal with text description data corresponding to a video signal, converts it to a first audio signal, and plays it as an audible signal at a display device, reducing bandwidth requirements by using a text-to-speech converter within the receiving device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an additional audio track is provided for video-descriptive service, then the service quality for visually impaired users is improved, but the bandwidth requirement increases significantly
Solution Approach 1:
The patent extracts only the essential descriptive information from the video content and transmits it as compact text data rather than full audio. The receiving device then synthesizes speech from this extracted text, significantly reducing the bandwidth required while maintaining the core functionality of describing video content for visually impaired users.
Solution Approach 2:
Instead of transmitting audio data and converting it to speech at the broadcast side, the patent inverts the process by transmitting text data and performing text-to-speech conversion at the receiving device. This inversion dramatically reduces the amount of data that needs to be transmitted over the broadcast network.
2Adaptability or versatility
If an additional audio track is provided for video-descriptive service, then the accessibility for visually impaired users is improved, but the cost becomes prohibitive
Solution Approach 1:
The patent extracts only the essential descriptive information from the video content and transmits it as compact text data rather than full audio. The receiving device then synthesizes speech from this extracted text, significantly reducing the bandwidth required while maintaining the core functionality of describing video content for visually impaired users.
Solution Approach 2:
The patent changes the data format parameter from audio (64 kbps) to text, which requires significantly fewer bits to transmit. This parameter change in the data representation fundamentally reduces both bandwidth requirements and associated costs while preserving accessibility functionality.
3Quantity of substance
If text-to-speech conversion is performed at the receiving device, then bandwidth efficiency is improved, but device complexity increases
Solution Approach 1:
The patent enables the receiving device to perform text-to-speech conversion using its own built-in capabilities. This self-service approach allows the device to generate the audio output locally from the transmitted text data, eliminating the need for separate external text-to-speech hardware while reducing bandwidth requirements.
Data Source
AI summary
A method and system for communicating text descriptive data has a receiving device that receives a data signal having text description data corresponding to a description of a video signal. A text-to-speech converter associated with the receiving device converts the text description data to a first audio signal. A display device in communication with the text-to-speech converter converts the first audio signal associated with the receiving device to an audible signal.