A data processing apparatus includes a storage unit configured to store reference data of a filter operation and coefficient data of filters, a plurality of operators configured to parallelly perform the filter operation on the reference data and the coefficient data of the filters, a first supply unit configured to supply reference data transferred from the storage unit to the plurality of operators, a second supply unit configured to supply coefficient data of a first and second filters transferred from the storage unit to the plurality of operators, and a control unit configured to control the second supply unit to supply the coefficient data of the first filter to a first operator, and supply the coefficient data of the second filter to a second operator.
Please help me write a proper abstract based on the patent claims. CLAIM: 1. A data processing apparatus comprising: a storage unit configured to store reference data of a filter operation and coefficient data of filters to be used for the filter operation; a plurality of operators configured to parallelly perform the filter operation on the reference data and the coefficient data of the filters; a first supply unit configured to hold a predetermined number of pieces of reference data transferred from the storage unit, and supply the transferred reference data to the plurality of operators; a second supply unit configured to hold coefficient data of a first filter and coefficient data of a second filter transferred from the storage unit, and supply the coefficient data of the first and second filters to the plurality of operators; and a control unit configured to control the second supply unit to supply the coefficient data of the first filter to a first operator of the plurality of operators, and supply the coefficient data of the second filter to a second operator of the plurality of operators. 2. The data processing apparatus according to claim 1, wherein the second supply unit further comprises: a second storage unit configured to hold the coefficient data of the first filter and the coefficient data of the second filter; a first shift register configured to load the coefficient data of the first filter from the second storage unit and supply the data to the first operator; and a second shift register configured to load the coefficient data of the second filter from the second storage unit and supply the data to the second operator. 3. The data processing apparatus according to claim 1, wherein the first supply unit comprises: a first storage unit configured to hold the predetermined number of reference data; a third shift register configured to load the reference data from the first storage unit and supply the data to the first operator; and a fourth shift register configured to load the reference data from the first storage unit and supply the data to the second operator. 4. The data processing apparatus according to claim 1, wherein the control unit determines operators other than the first operator to be supplied with the coefficient data of the first filter from the second supply unit, and operators other than the second operator to be supplied with the coefficient data of the second filter from the second supply unit. 5. The data processing apparatus according to claim 1, further comprising a path control unit configured to control a path for supplying the coefficient data from the second supply unit to the plurality of operators, wherein the control unit controls the path control unit to supply the coefficient data of the first filter from the second supply unit to the first operator, and supply the coefficient data of the second filter from the second supply unit to the second operator. 6. The data processing apparatus according to claim 5, wherein the path control unit uses crossbar switches. 7. The data processing apparatus according to claim 1, wherein the filter operation is a convolution operation on the plurality of pieces of reference data and the coefficient data of the filters. 8. The data processing apparatus according to claim 1, further comprising: at least two shift registers configured to hold operator output data of the first operator and operator output data of the second operator; and a conversion unit configured to perform nonlinear conversion processing on output data of the shift registers. 9. The data processing apparatus according to claim 8, wherein the control unit instructs the storage unit to store the output data of the shift registers or output data of the conversion unit. 10. The data processing apparatus according to claim 1, wherein the reference data is two-dimensional data, and wherein, based on a size of the reference data, the plurality of operators sequentially performs the filter operation on the reference data arranged in a horizontal or vertical direction of the two-dimensional data. 11. The data processing apparatus according to claim 1, wherein the filter operation is an operation represented by hierarchical combination relations between a plurality of data groups of a convolutional neural network. 12. The data processing apparatus according to claim 11, wherein, based on the hierarchical combination relations, the control unit controls parallel processing by the plurality of operators. 13. A data processing apparatus according to claim 12, wherein the reference data includes image data. 14. The data processing apparatus according to claim 13, wherein the plurality of operators performs operation processing for pattern recognition on the image data. 15. A method for controlling a data processing apparatus having a storage unit configured to store reference data of a filter operation and coefficient data of filters to be used for the filter operation, the method comprising: parallelly performing the filter operation on the reference data and the coefficient data of the filters by using a plurality of operators; holding a predetermined number of pieces of reference data transferred from the storage unit, and supplying the transferred reference data to the plurality of operators via a first supply unit; holding coefficient data of a first filter and coefficient data of a second filter transferred from the storage unit, and supplying the coefficient data of the first and second filters to the plurality of operators via a second supply unit; and controlling the second supply unit to supply the coefficient data of the first filter to a first operator of the plurality of operators, and supply the coefficient data of the second filter to a second operator included in the plurality of operators. 16. A non-transitory computer-readable storage medium storing a program for causing a computer having a storage unit configured to store reference data of a filter operation and coefficient data of filters to be used for the filter operation to function as: a plurality of operators configured to parallelly perform the filter operation on the reference data and the coefficient data of the filters; a first supply unit configured to hold a predetermined number of pieces of reference data transferred from the storage unit, and supply the transferred reference data to the plurality of operators; a second supply unit configured to hold coefficient data of a first filter and coefficient data of a second filter transferred from the storage unit, and supply the coefficient data of the first and second filters to the plurality of operators; and a control unit configured to control the second supply unit to supply the coefficient data of the first filter to a first operator of the plurality of operators, and supply the coefficient data of the second filter to a second operator of the plurality of operators. 17. A data processing apparatus comprising: a data storage unit configured to store target data; a coefficient storage unit configured to store a pair of a plurality of pairs of filter coefficients corresponding to a plurality of types of filter operations; a plurality of operation units divided into a plurality of groups configured to parallelly perform a plurality of filter operations; a data supply unit to configured to sequentially read partial data of the target data from the data storage unit, select target data for the filter operations from the partial data for each of the groups, and parallelly supply the selected data to the plurality of operation units; a coefficient supply unit configured to read the pair of a plurality of pairs of filter coefficients from the coefficient storage unit, select the pair of filter coefficients for each of the groups, and parallelly supply the pair to the plurality of operation units; and a control unit configured to control a selection of target data for the filter operations by the data supply unit, and a selection of the pair of filter coefficients by the coefficient supply unit, based on operation conditions. 18. The data processing apparatus according to claim 17, wherein the coefficient supply unit selects and supplies the same pair of filter coefficients to all of the plurality of groups. 19. The data processing apparatus according to claim 17, wherein the data supply unit selects and supplies the same data to all of the plurality of groups. 20. The data processing apparatus according to claim 17, wherein the operation conditions include a size of the target data of the filter operations. 21. The data processing apparatus according to claim 17, wherein the operation conditions include the number of types of the filter operations. 22. The data processing apparatus according to claim 17, wherein the operation conditions include a size or read time of the partial data in the data supply unit. 23. The data processing apparatus according to claim 17, wherein the operation conditions include a processing speed of the operation units. 24. The data processing apparatus according to claim 17, wherein the filter operations include a convolution operation. 25. The data processing apparatus according to claim 17, wherein the data processing apparatus performs processing for each layer of a neural network having a plurality of layers. 26. The data processing apparatus according to claim 17, wherein the control unit controls the selections for each layer of a plurality of layers. 27. A data processing method performed by a data processing apparatus having a data storage unit configured to store target data, and a coefficient storage unit configured to store a pair of a plurality of pairs of filter coefficients corresponding to a plurality of types of filter operations, the method comprising: sequentially reading partial data of the target data from the data storage unit, selecting target data for the filter operations from the partial data for each of groups, and parallelly supplying the selected data to a plurality of operation units divided into a plurality of groups for parallelly performing a plurality of filter operations; reading the pair of a plurality of pairs of filter coefficients from the coefficient storage unit, selecting the pair of filter coefficients for each of the groups, and parallelly supplying the pair to the plurality of operation units; and controlling a selection of target data for the filter operations by the data supply, and a selection of the pair of filter coefficients by the coefficient supply, based on operation conditions. 28. A non-transitory computer-readable storage medium storing a program for causing a computer having a data storage unit configured to store target data, and a coefficient storage unit configured to store a pair of a plurality of pairs of filter coefficients corresponding to a plurality of types of filter operations to function as: a plurality of operation units divided into a plurality of groups configured to parallelly perform a plurality of filter operations; a data supply unit to configured to sequentially read partial data of the target data from the data storage unit, select target data for the filter operations from the partial data for each of the groups, and parallelly supply the selected data to the plurality of operation units; a coefficient supply unit configured to read the pair of a plurality of pairs of filter coefficients from the coefficient storage unit, select the pair of filter coefficients for each of the groups, and parallelly supply the pair to the plurality of operation units; and a control unit configured to control a selection of target data for the filter operations by the data supply unit, and a selection of the pair of filter coefficients by the coefficient supply unit, based on operation conditions.