Co-processor arithmetic unit
专利汇可以提供Co-processor arithmetic unit专利检索，专利查询，专利分析的服务。并且PURPOSE:To make the calculating speed of a co-processor arithmetic unit higher, by providing a zero-data detector and omitting the multiplying and adding calculation on matrix elements having the value of zero as much as possible from the beginning. CONSTITUTION:When matrix calculation AX is carried out, the elements of a matrix A are written in a memory device 2 in the unit of line from the outside. When the elements are written, the addresses of the leading elements of the lines, at which non-zero is detected, are stored in a starting address register 3 and the addresses of the tailing elements of the lines, at which non- zero is detected, are stored in an ending address register 4. The contents of the registers 3 and 4 are updated whenever a non-zero element is detected. When a co-processor 8 carries out matrix calculation, the processor 8 reads the contents of the registers 3 and 4 before starting the calculation of each line and executes sum of products calculation on the read lines only. Therefore, the speed of matrix calculation of this arithmetic unit can be improved.，下面是Co-processor arithmetic unit专利的具体信息内容。
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