Abstract: For use in a dual-path network system comprising a master end, a main transmission path, a sub-transmission path, an intermediary device, and a slave end, a network redundancy check application program management method is disclosed to virtualize COM ports of multiple IP addresses in the master end into one single virtualized COM port by means of a driver in the master end so that the user/user's application program needs only to manage/monitor the virtualized COM port. Through the driver and the firmware formed in the intermediary device, the invention covers all operation modes, and the user/user's application program needs not to worry about system complication resulted from the redundancy check system. Under the network architecture of the present invention, the master end enjoys the high stability of dual-path, and the manager needs not to manage a big number of COM ports.

Abstract: The present invention discloses a method for receiving data by a universal asynchronous receiver transmitter, which includes a receive shift register (RSR), a receiver FIFO, a receiver buffer register (RBR), a line status register (LSR), and a good data length register (GDL). The RSR is connected to the receiver FIFO and the LSR in parallel. The receiver FIFO is further connected to the RBR, and the LSR is connected to the GDL. The receiver buffer register, the good data length register, and the line status register are connected to a microprocessor through a bus, such that when the receive shift register receives a plurality of serial data, the good data length register counts the number of correct data, and the microprocessor uses the count of the good data length register as a number of times for reading the receiver buffer register thereby enhance the performance of reading data.

Abstract: The present invention discloses a method for receiving data by a universal asynchronous receiver transmitter, which includes a receive shift register, a receiver FIFO, receiver buffer, a line status register, and a good data length register (GDL). The receive shift register is connected to the receiver FIFO and the line status register in parallel. Afterward the receiver FIFO is connected to a receiver buffer, and the line status register is connected to a good data length register (GDL).

Abstract: The present invention discloses a method for receiving data by a universal asynchronous receiver transmitter and the universal asynchronous receiver transmitter includes a receive shift register and a counter, and the receive shift register is connected to a receive register, and the receive register is connected to a preinstalled microprocessor through a bus, such that when the receive shift register receives a plurality of serial data, the counter counts the correct data marked by an error bit, and the microprocessor bases on the count of the counter as the number of times for reading data addresses to read all data marked as a correct data and enhances the performance of reading data.