关键词: FPGA VGA Verilog HDL 显示模式 频率计

Abstract:

An algorithm to accurately identify the VGA mode is designed in this paper, which is based on the horizontal synchronous signal and the vertical synch ronous signal,and can be applied to FPGA in order to complete the scheme of the VGA video collection card through the frequency counting theory. The alg orithm is implemented in Verilog HDL,and is accomplished by Quartus II of the Altera company.

Key words: FPGA, VGA;Verilog HDL;display mode, frequency counting