Pilot Reference Coding for Adaptive Audio Signal Compression
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Solution Overview
Problem
Current signal processing techniques for audio and video data compression and transmission in complex communication environments do not maximize transmission efficiency, leaving room for improvement in data coding and encoding methods.
Innovation Solution
An apparatus and method for signal processing that involves obtaining mode information, pilot reference values, and pilot difference values to efficiently encode and decode data, using techniques like Pulse Code Modulation (PCM), Pilot Based Coding (PBC), and Differential Coding (DIFF) to optimize data transmission efficiency by grouping and entropy coding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional signal processing techniques are used for audio and video data compression, then data can be compressed and transmitted, but transmission efficiency is not maximized in complex communication environments
Solution Approach 1:
The patent implements dynamic mode switching between different coding schemes (PCM, PBC, DIFF) based on communication conditions. The decoding apparatus selects operating modes (first, second, or third modes) depending on whether pilot signals are present and the specific communication environment, allowing the system to adapt dynamically to varying channel conditions and maximize transmission efficiency across different scenarios
Solution Approach 2:
The patent changes coding parameters based on communication environment. It uses mode information to select between different coding approaches: using pilot reference values and pilot difference values in PBC mode, using only previous reference values in DIFF mode, or using raw PCM values. This parameter adaptation allows optimal performance across diverse communication conditions
2Productivity
If data is coded using existing methods, then data transmission can occur, but data coding efficiency and compression rates can be enhanced further
Solution Approach 1:
The patent introduces pilot signals as intermediary elements that carry reference information through the communication channel. These pilot signals serve as mediators between the encoder and decoder, enabling the reconstruction of audio signals with high fidelity. The pilot-based coding uses these intermediary pilot values to recover the original audio data more accurately, reducing information loss during compression and transmission
Solution Approach 2:
The patent performs preliminary encoding of pilot signals before main data transmission. By pre-processing and transmitting pilot reference values separately, the system establishes a foundation for accurate decoding. This preliminary action allows the decoder to use these pre-transmitted pilot values as references for reconstructing the audio signal, improving both coding efficiency and audio quality
3Productivity
If control data for audio recovery is transmitted, then audio can be reconstructed, but transmission efficiency of control data can be maximized through better encoding
Solution Approach 1:
The patent segments the coding process into distinct modes and components. It divides control data transmission into different segments: pilot reference values, pilot difference values, and previous reference values. Each segment is encoded using appropriate methods based on its characteristics. This segmentation allows efficient compression of control data while maintaining the reliability needed for accurate audio recovery through selective reconstruction
Data Source
AI summary
Data coding and entropy coding are performed with interconnection, and grouping is used to enhance coding efficiency. The present invention includes the steps of obtaining mode information and obtaining a pilot reference value corresponding to a plurality of data and a pilot difference value corresponding to the pilot reference value according to data attribute indicated by the mode information and obtaining the data using the pilot reference value and the pilot difference value.