Analog-to-digital conversion with reconfigurable function mapping for neural networks activation function acceleration
US11038520B1 · kind B1 · utility
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Inventors
Key dates
| Filing date | Apr 15, 2020 |
| Grant date | Jun 15, 2021 |
| Priority date | — |
| Expiry date | Apr 15, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/462
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for analog-to-digital conversion with reconfigurable function mapping for acceleration of calculating an activation function of a neural network system includes determining, by a shared circuit, a set of voltage intervals using digital bits in a look-up table to define a shape of the activation function being mapped. The shared circuit determines a set of most significant bits (MSBs) for each voltage interval by storing additional bits in the look-up table corresponding to each voltage interval entry. Further, each of several per-neuron circuits determines whether its accumulated input voltage is in a received voltage interval, and if so, causing the set of MSBs to be stored. Each of the per-neuron circuits determines a set of least significant bits (LSBs) by performing a linear interpolation over the voltage interval. The set of MSBs and the set of LSBs are output as a result of the activation function with analog-to-digital conversion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.