Patent ID: 6247092
Filing Date: 2001-06-12
Classification: H04L

Abstract:
A command control method in a data transmission system, said system comprising; a transmission side device for outputting transmission data received from a transmission side information processing apparatus connected thereto to a transmission line, and a receiving side device for outputting receiving data received from said transmission side device through said transmission line to a receiving side information processing apparatus connected thereto, said transmission side device and said receiving side device being arranged oppositely via said transmission line so as to send a control command from said transmission side device to said receiving side device, said command control method comprising the steps of:in said transmission side device, interrupting a path of transmission data, which are outputted from said transmission side information processing apparatus and sent to said transmission line, when sending a control command to said receiving side device, and sending said control command from said transmission side device to said transmission line; andin said receiving side device, interrupting a path of receiving data, which is sent from said transmission line to said receiving side information processing apparatus, when receiving said control command from said transmission side device, and sending predefined data corresponding to said control command to said receiving side information processing apparatus.