METHOD FOR MANAGING CONNECTION IN EQUIPMENT LINKED BY DIGITAL INTERFACE AND INSTRUCTION STRUCTURE THEREFOR

PROBLEM TO BE SOLVED: To provide a method for managing connection in equipment linked by digital interface and an instruction structure therefor. SOLUTION: Concerning the method for managing connection in equipment in a network system connecting equipment to transmit information and equipment, to which the information is transmitted, through a prescribed digital interface on the basis of a prescribed data transmission standard, this method is provided with a stage for reporting a state change in the connection to the other equipment when such a change occurs in one of equipment, to which the connection is established, and the equipment on the opposite side can deal with the change and can efficiently manage the state of connection by informing the various state changes of the connection related to the transmission flow of information during real time information transmission in the equipment linked by the prescribed digital interface standard.