Digital signal processor, filtering wave processing method and recording medium

Application Number: 00107537
Application Date: 2000.05.17
Publication Number: 1274128
Publication Date: 2000.11.22
Priority Information: 1999/5/17 JP 135348/99
International: G06F17/00
Applicant(s) Name: NEC Corp.
Inventor(s) Name: Misu Katsuya
Patent Agency Code: 11219
Patent Agent: mu dejun
Abstract In DSP, an X memory (3) and a Y memory (4) can be accessed parallelly with each other and simultaneously with a sum-of-product calculation performed by a register unit (10) and a sum-of-product unit (11). When a controller (18) determines that data tables A and B to be filtered are both stored in the X memory (3), it allocates an area (4a) into the Y memory (4), and copies the data table B into this area (4a). The controller (18) controls a sum-of-product calculation unit comprising the register unit (10) and the sum-of-product unit (11) to carry out a calculation process (filtering process).