Audio Bitstream Embedding for Earcon Transmission
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Solution Overview
Problem
Current Bluetooth systems face challenges in passing through earcons and system sounds alongside coded media data without requiring additional connections and decoding, leading to increased complexity and battery consumption.
Innovation Solution
A method and device configuration that embeds additional media data, such as earcons and system sounds, directly into the bitstream containing coded media data, allowing for simultaneous processing and transmission without the need for additional connections or decoding, using MPEG-4 audio bitstream extension mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If additional connections and encoder-decoder pairs are established to transmit earcons and system sounds, then the transmission capability is improved, but the device complexity and computational complexity increase
Solution Approach 1:
The patent merges the transmission of earcons/system sounds with the existing coded media data by embedding additional media data into the bitstream structure. This combines multiple transmission functions into a single connection, eliminating the need for separate encoder-decoder pairs while maintaining the ability to transmit both media types simultaneously
Solution Approach 2:
The bitstream structure is designed to serve multiple functions: it carries both the original coded media data and the additional earcon/system sound data through a single transmission channel. The embedded data structure allows the same communication link to handle diverse audio content types without requiring dedicated pathways for each
2Adaptability or versatility
If additional connections and encoder-decoder pairs are established to transmit earcons and system sounds, then the transmission capability is improved, but the energy consumption increases
Solution Approach 1:
By combining the transmission of multiple audio data types into a single bitstream, the patent reduces the number of active transmission channels and processing units required. This merging effect lowers the overall computational load on battery-powered devices, directly reducing energy consumption while maintaining full transmission capability
3Device complexity
If bitstream embedding is used to transmit earcons and system sounds, then the device complexity is reduced, but the data format compatibility challenges arise
Solution Approach 1:
The patent implements a nested data structure where additional media data is embedded within the existing bitstream framework. The additional data is packaged in a format that fits within the outer bitstream structure, allowing inner data to be contained within outer data layers without disrupting the overall format hierarchy
Solution Approach 2:
The bitstream is segmented into distinct components: the original coded media data and the embedded additional media data. Each segment maintains its own structure and can be independently processed or extracted, allowing receivers to handle only the data types they support while maintaining compatibility with the overall format
Data Source
AI summary
Described herein is a method for generating a modified bitstream on a source device, wherein the method includes the steps of: a) receiving, by a receiver, a bitstream including coded media data; b) generating, by an embedder, payload of additional media data and embedding the payload in the bitstream for obtaining, as an output from the embedder, a modified bitstream including the coded media data and the payload of the additional media data; and c) outputting the modified bitstream to a sink device. Described is further a method for processing said modified bitstream on a sink device. Described are moreover a respective source device and sink device as well as a system of a source device and a sink device and respective computer program products.