US Patent 11977969 Data loading

A data loading circuit and method are provided. The circuit is configured to load data for a feature map calculated by a neural network into a calculation circuit, wherein the size of the convolution kernel of the neural network is K*K data, and a window corresponding to the convolution kernel slides with a step size of S in the feature map, where K and S are positive integers and S<K, the circuit comprising: two data loaders comprising a first data loader and a second data loader; and a controller configured to: control the first data loader to be in a data outputting mode and control the second data loader to be in a data reading mode, when the window slides within K consecutive rows of the feature map.