CIRCUIT FOR EXTRACTING FEATURES, NEURAL NETWORK AND SIGNAL PROCESSING SYSTEM
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United States of America Patent
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Issued Date -
Nov 3, 2022
app pub date -
Apr 28, 2022
filing date -
Apr 28, 2022
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Abstract
The present application discloses a circuit for extracting a feature, a network and a signal processing system. The circuit includes: one or more instant range of change feature extracting units, which are connected in parallel and configured to extract and classify an instant range of change (IROC) feature from an input of an asynchronous pulse coding in the time domain, the input of the asynchronous pulse coding is a pulse request signal and a pulse direction signal obtained by performing time-domain quantization and coding on an analog signal. By the circuit for extracting a feature according to the present application, the instant range of change of an analog input of the asynchronous pulse coding can be directly extracted and classified in the time domain, converting from the time domain to the frequency domain required by the traditional feature extraction process is avoided, and the power consumption overhead is reduced.
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