Difference-Based Coding Circuitry for Linear Compressed Signal Processing
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Solution Overview
Problem
Existing data compression techniques often require decompression before linear signal processing, which is power-intensive and complex, especially for non-linear compressed data.
Innovation Solution
The development of a lossless, linear data compression technique using difference-based data transformation, where coding circuitry processes data samples to compute orders of difference and output encoded data that can be directly subjected to linear signal processing, implemented in both encoder and decoder for bidirectional communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If non-linear data compression techniques are used, then data compression ratio is improved, but signal processing complexity increases and power dissipation increases
Solution Approach 1:
The patent transforms the data representation parameters by applying difference-based transformation to generate linearly compressed data. Instead of using traditional non-linear compression parameters, the system changes to linear difference parameters that maintain mathematical linearity, enabling direct signal processing without decompression while achieving compression ratios comparable to non-linear methods.
2Quantity of substance
If non-linear data compression techniques are used, then data compression ratio is improved, but power dissipation increases
Solution Approach 1:
The system changes the compression parameters from non-linear transformations to linear difference-based transformations. This parameter change eliminates the need for power-intensive decompression operations while maintaining effective compression ratios, thereby reducing overall power dissipation in the data processing system.
3Measurement precision
If decompression is performed before linear signal processing, then signal processing accuracy is improved, but processing time increases
Solution Approach 1:
The patent applies preliminary difference-based transformation to the data during the compression stage, preparing the data in a format that is already suitable for linear signal processing operations. This preliminary action eliminates the need for subsequent decompression steps, reducing processing time while maintaining the accuracy required for linear operations through the mathematical properties of the transformation.
Data Source
AI summary
Coding circuitry for difference-based data transformation in an illustrative embodiment comprises a difference-based encoder having a plurality of processing stages, with the difference-based encoder being configured to generate respective orders of difference from a sequence of data samples and to output encoded data determined based on at least a selected one of the orders of difference. The coding circuitry may be configured to implement lossless, linear compression of the sequence of data samples. The coding circuitry may additionally or alternatively comprise a difference-based decoder having a plurality of processing stages, with the difference-based decoder being configured to process encoded data comprising selected ones of a plurality of orders of difference and to reconstruct a sequence of data samples based on the selected orders of difference.