Patent ID: 8001293
Filing Date: 2011-08-16
Classification: G05B

Abstract:
1. A data relay apparatus, comprising: a communication module comprising a first input/output (I/O) port and a second I/O port, each of the first I/O port and the second I/O port configured for receiving and transmitting data, the communication module configured for processing data received via the first I/O port and outputting and relaying the data to the second I/O port, and processing data received via the second I/O port and outputting and relaying the data to the first I/O port; and a data relay unit configured for determining whether the communication module operates and for allowing the communication module to process and relay the data received via the first I/O port and the second I/O port, or for allowing outputting and relaying the data received via the first I/O port to the second I/O port and outputting and relaying the data received via the second I/O port to the first I/O port, the data relay unit comprising: