Tactile Signal Encoding Using Temporal-Spatial Masking
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Solution Overview
Problem
Existing tactile signal encoding methods result in bitstreams with significant information redundancy due to the neglect of mutual masking effects between tactile signals.
Innovation Solution
A tactile signal encoding method that determines a temporal-spatial masking threshold matrix based on spatial information, target signal amplitudes, and frequencies to filter out redundant secondary tactile signals, reducing redundancy and improving encoding efficiency.
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 signal blocks for joint processing. Instead of encoding each signal independently, the system combines N tactile signals into M signal blocks, allowing the encoder to exploit correlations between signals and remove redundant information through temporal-spatial masking analysis, thereby reducing bitstream redundancy while maintaining encoding feasibility
Solution Approach 2:
The patent segments tactile signals into multiple signal blocks for organized processing. By dividing N tactile signals into M signal blocks with defined primary and secondary signals, the system can apply masking thresholds selectively to different signal components, efficiently removing redundancy without overwhelming computational complexity
2Loss of information
If temporal-spatial masking threshold matrix is used to filter secondary tactile signals, then information redundancy is reduced, but encoding complexity increases
Solution Approach 1:
The patent applies local quality by differentiating between primary and secondary tactile signals within each signal block. The temporal-spatial masking threshold matrix is selectively applied only to secondary signals based on their correlation with primary signals, rather than uniformly processing all signals. This targeted approach removes redundancy where it exists while avoiding unnecessary computational overhead on already-independent primary signals
Solution Approach 2:
The patent changes processing parameters dynamically based on signal characteristics. The temporal-spatial masking threshold matrix is constructed using target signal amplitudes and frequencies of primary signals, adapting the filtering criteria to the actual signal properties rather than using fixed thresholds. This parameter adaptation optimizes redundancy removal efficiency while maintaining manageable encoding complexity
Data Source
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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.