| 摘要 |
PROBLEM TO BE SOLVED: To make a communication among a plurality of kinds of devices constituting an electronic musical instrument through a bus. SOLUTION: When a main controller device 10 communicates with a keyboard device 14, the communication is carried out by a standard protocol. In this case, the main controller device 10 serves as a master to constitute a header part of an address unique to the keyboard device 14 which is a slave address as a transmission destination address and an address for the standard protocol of the main controller device 10 as a transmission source address and send it to an E bus 11 together with a data part. Since the transmission destination address matches the address of the keyboard device 14, the device receives the transmission source address and data part following the transmission destination address. |
