Patent ID: 6917996

Claim:
A bus control system, comprising: a bus which transfers data; a first bus control device corresponding to a first device which is to be connected to the bus, which outputs a first bus use request signal that the first device requires to use the bus, and which outputs a first off-time signal at a predetermined time period after suspending the output of the first bus use request signal; a second bus control device corresponding to a second device which is to be connected to the bus, which outputs a second bus use request signal that the second device requires to use the bus, and which outputs a second off-time signal during a predetermined time period after suspending the output of the second bus use request signal; and a bus arbiter which selectively outputs a bus use grant signal to the first and second bus control devices in response to the first and second bus use request signals and which halts the output of the bus use grant signal while receiving the first and second off-time signals.