Abstract: Disclosed is a data processing system using a dual monitor, on which separate contents are displayed respectively, as a display device. The data processing system includes: a memory providing a data processing area using programs; an input device for inputting data; a first VGA generating screen data for a result processed by programs; a second VGA generating screen data for a result processed by programs and different from the contents displayed by the first VGA; a processor processing data input through the input device using the memory and outputting the processed result through the first and second VGAs; a first monitor for displaying screen data from the first VGA; and a second monitor for displaying screen data from the second VGA.

Abstract: An authentication system and method therefor is provided, in which a dedicated system is installed to allow only a computer system which is monopolistically and exclusively supplied by a company operating an information providing server to be used to access the server. Here, the user computer includes an authentication system which generates a specific registration code for the system. The authentication system includes the user computer for generating a registration code for authenticating the user computer, and a system server which receives the registration code of the user computer and ascertains whether or not the user computer is registered.

Abstract: Disclosed is a video signal processing system for outputting video signals for driving monitors during one period of clock signal. The system includes: a clock signal (CLK) supply part for outputting CLK for transmitting video signal; a monitor controller for outputting memory access signal (MA) by the period of CLK; a memory buffer for outputting data signal according to MA; latch circuits for latching data signal, dividing into multiple data during one period of CLK and outputting the latched data to the monitors; an inverter inverting CLK; a delay circuit delaying inverted CLK; and a flip-flop circuit for outputting in flip-flop after receiving delayed CLK and inputting into the latch circuits.

Abstract: An authentication system and method therefor is provided, in which a dedicated system is installed to allow only a computer system which is monopolistically and exclusively supplied by a company operating an information providing server to be used to access the server. Here, user computer includes an authentication system which generates a specific registration code of the system. The authentication system includes user computer for generating a registration code for authenticating the user computer, and a system server which receives the registration code of the user computer and ascertain whether or not the user computer is registered.

Abstract: Disclosed is a data processing system using a dual monitor, on which separate contents are displayed respectively, as a display device. The data processing system includes: a memory providing a data processing area using programs; an input device for inputting data; a first VGA generating screen data for a result processed by programs; a second VGA generating screen data for a result processed by programs and different from the contents displayed by the first VGA; a processor processing data input through the input device using the memory and outputting the processed result through the first and second VGAs; a first monitor for displaying screen data from the first VGA; and a second monitor for displaying screen data from the second VGA.

Abstract: The present invention relates to a system and a method for intermediating electronic commerce which enables a user to join multiple cyber malls by a membership registration at one time without a separate authorization procedure for each cyber mall. The system includes Internet accessible user's computers which allow electronic commerce through a program displaying link means connecting service environment display of user's computer, media display and a web page, cyber mall servers which are linked by the link means displayed on a monitor of user's computer and sell products by electronic commerce; and a system server which provides and displays various information and link means to user's computer via the internet, and connects user to the cyber mall servers by membership registration code input once from user's computer without a separate authorization procedure for each cyber mall.

Abstract: A video graphic adaptor (VGA) using a universal serial bus (USB) port for driving a sub-monitor in a dual monitor including a main monitor and a sub-monitor is provided. The VGA includes a first universal serial bus (USB) port outputting video data in a computer, a second USB port receiving the video data output from the first USB port, a video memory storing the video data input via the second USB port and outputting the stored video data, a random access memory digital-to-analog converter (RAMDAC) for converting the video data stored in the video memory into analog video data and outputting the converted result to the sub-monitor, a controller for controlling the video data input via the second USB port to be stored in the video memory, and then outputting the stored video data to the RAMDAC, and a video BIOS storing control data necessary for operation of the controller.

Abstract: Disclosed is a video signal processing system for outputting video signals for driving monitors during one period of clock signal. The system includes: a clock signal (CLK) supply part for outputting CLK for transmitting video signal; a monitor controller for outputting memory access signal (MA) by the period of CLK; a memory buffer for outputting data signal according to MA; latch circuits for latching data signal, dividing into multiple data during one period of CLK and outputting the latched data to the monitors; an inverter inverting CLK; a delay circuit delaying inverted CLK; and a flip-flop circuit for outputting in flip-flop after receiving delayed CLK and inputting into the latch circuits.