Patent ID: 6414620
Filing Date: 2002-07-02
Classification: G06F,G10L

Abstract:
A signal processing system, comprising:an A/D conversion section for converting an analog signal input from an external device into a digital signal; a digital signal processing section for processing the digital signal; a D/A conversion section for converting the digital signal processed by the digital signal processing section into an analog signal; a control section for controlling the A/D conversion section, the digital signal processing section, and the D/A conversion section; and a memory section including a first program memory area for storing a program for processing the digital signal and a first data memory area, wherein: the digital signal processing section includes a second program memory area connected, via a first bus, to the first program memory area, and a second data memory area connected to the first data memory area via a second bus, the control section transfers the program stored in the first program memory area to the second program memory area via the first bus, and executes the program thus stored in the second program memory area, so as to control the processing of the digital signal performed by the digital signal processing section, and the control section stores the digital signal processed by the digital signal processing section in the second data memory area, transfers at least a part of the digital signal stored in the second data memory area to the first data memory area via the second bus, and transfers the digital signal stored in the first data memory area to the second data memory area via the second bus, so as to control the processing of the digital signal performed by the digital signal processing section.