PURPOSE: To ensure blocking operation of uncoming of stray current and to make unnecessary the transmission path for control signal, by interrupting the reverse signal based on the transmission signal to other transmission path in a computer system.
CONSTITUTION: When the control signal from a transmission path BUS1 is transmitted as L, the output of a NAND circuit ND1 is at L, and the output of ND2 is at H, which is delivered to BUS2 via a driver DV2 as L signal. At the same time, the output of ND2 is fed to an AND circuit AD via an inverter INV3, and the L signal via a receiver RV2 is interrupted at AD. Similarly, when the control signal of BUS2 is transmitted to BUS1, ND1 is interrupted with the output of INV2. Thus, stray-in of the reverse signal based on the transmission signal from one transmission line is blocked.
KUBO HIROSHI
MATSUMOTO HITOSHI
SAITOU HAJIME
MATSUMOTO KOUZOU
| JPS50103917A | 1975-08-16 | |||
| JPS54129845A | 1979-10-08 | |||
| JPS5350606A | 1978-05-09 |