MASTER DATA DEVICE, SLAVE DATA DEVICE, METHOD FOR CONTROL OF ACCESS TO DATA TRANSMISSION BUS, METHOD FOR ACCESSING DATA BUS Russian patent published in 1998 - IPC

FIELD: computer engineering. SUBSTANCE: three lines of data bus are used for transmission of duplex synchronous data between at least two data transmission devices using relatively low transmission speed. Possible half-duplex asynchronous data are sent using higher transmission speed to one of three line of bus when one line of bus is set to logical ONE state. EFFECT: increased functional capabilities. 9 cl, 13 dwg