Tactile Signal Encoding with Temporal-Spatial Masking Compression
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Solution Overview
Problem
Existing tactile signal encoding methods fail to effectively reduce information redundancy due to ignoring mutual masking effects between tactile signals, resulting in inefficient bitstream compression.
Innovation Solution
A tactile signal encoding method that determines a temporal-spatial masking threshold matrix based on spatial information and signal amplitudes and frequencies to filter out redundant secondary tactile signals, using techniques like MPEG compression to generate a target bitstream.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If single-channel tactile signals are encoded one by one, then encoding simplicity is maintained, but information redundancy in the bitstream increases
Solution Approach 1:
The patent merges multiple tactile signals into blocks for joint processing. Instead of encoding each signal independently, the system groups N tactile signals into blocks and applies masking threshold calculations across the entire block, enabling inter-signal redundancy removal and achieving better compression ratios while maintaining manageable complexity through block-based organization.
Solution Approach 2:
The patent implements a universal masking threshold calculation mechanism that handles multiple tactile signals simultaneously. The temporal-spatial masking threshold model serves multiple functions: it identifies redundant information across different signals, determines which signals to retain or discard, and optimizes bitstream compression for diverse tactile signal combinations within each block.
2Loss of information
If temporal-spatial masking threshold calculation is performed, then information redundancy is reduced, but encoding complexity increases
Solution Approach 1:
The patent segments tactile signals into blocks of N signals and processes each block independently through the temporal-spatial masking threshold calculation. This segmentation approach limits the complexity of threshold calculations to manageable block sizes while still capturing inter-signal masking effects within each block, balancing compression effectiveness with computational feasibility.
Solution Approach 2:
The patent performs preliminary classification of tactile signals into primary and secondary signals based on their characteristics before applying the full masking threshold calculation. This preliminary action identifies candidate signals for retention versus discarding, reducing the computational burden of subsequent detailed threshold analysis and enabling more efficient encoding decisions.
Data Source
AI summary
This application provides a tactile signal encoding method, a tactile signal decoding method, an apparatus, and a device. The tactile signal encoding method includes: obtaining N first tactile signals; generating M first signal blocks according to the N first tactile signals; determining, according to spatial information of the N first tactile signals, a target signal amplitude corresponding to a primary tactile signal in each first signal block, and a target frequency corresponding to the primary tactile signal in each first signal block, a temporal-spatial masking threshold matrix corresponding to each first signal block; filtering out, based on the temporal-spatial masking threshold matrix corresponding to each first signal block, part secondary tactile signals included in each first signal block to obtain M second signal blocks; and encoding N second tactile signals to generate a target bitstream.