| 摘要 |
PURPOSE:To improve the transmission efficiency of a transmission right hand- round bus transmitting system by transmitting the broadcast signal after adding it to the bus control right setting signal. CONSTITUTION:If the bus control right is set to a device 1, a control right set-up signal ELS1 is sent onto a bus. Then an information transmission request signal SEQ2 is transmitted when the data DT2 to be transmitted to a device 2 exists. The data DT2 is sent to the device 2 when a reception preparation end signal ACK2 is received from the device 2. When a reception end signal RAK2 is received from the device 2, a broadcast signal SEL2 is transmitted after putting it on the control right transfer signal to be sent to the device 2. A figure (b) shows a transmission right which is instantaneously transferred to another device, and a figure (c) shows a selecting REQN and a retransmission request ARQN respectively. |
