Patent ID: 6405260
Filing Date: 2002-06-11
Classification: G06F

Abstract:
A data transmission apparatus for transmitting a data between a main system and a microcomputer, comprising:a signal controller for sensing data transmission and generating a first transmission control signal for transmitting the data from the main system to a memory system and a second transmission control signal for indicating a state of data transmission from the memory system to the main system; a data transmission detector for outputting a recognition signal, indicating whether data is transmitted from the main system to the microcomputer based on the first transmission control signal, the data transmission detector receiving a third transmission control signal from the microcomputer, wherein the third transmission control signal indicates a state of data transmission from the memory system to the microcomputer; and the memory system for latching the data for a predetermined period in order for the main system or the microcomputer to read the data to be transmitted through a corresponding port according to the first and second transmission control signals from the signal controller and the third transmission control signal and a fourth transmission control signal from the microcomputer, wherein the fourth transmission control signal is for indicating a state of data transmission from the microcomputer to the memory system.