A method of using a bus, includes: determining whether a subject unit among a plurality of units corresponding to masters obtaining a bus use permission from an arbiter uses the bus as a master to transfer data to/from a first unit corresponding to a slave; and converting the first unit into a master when the subject unit does not use the bus in order to allow the first unit to use the bus as a master, when the subject unit is determined not to be using the bus.

A repeater for a communication network having an isolation circuit for disabling the transmission of a fault-indicative signal through the repeater onto the network. A retriggerable one-shot starts timing with high to low signal transition. In the absence of a second transition within a defined time period, the one-shot triggers a flip-flop which, depending on the logic level of the input signal, generates an enabling signal passed to a logic gate to selectively allow and cut off the transmissio...

A bus system for sensor modules includes at least one bus for interconnecting the sensor modules and for carrying signals between the sensor modules. Switching control devices are provided, a first one being a bus master device for the at least one bus having bus logic control for controlling the transmission of signals over the at least one bus. A superordinate main bus is provided for connecting the switching control devices together and for transmitting signals between the switching control d...

A bus controller reduces the bus access wait time, to improve the performance of a processing unit that frequently accesses a main storage. The bus controller comprises a request signal generation unit for generating a bus right request signal according to a request from the processing unit, a bus right arbitration unit for arbitrating a bus right in response to the bus right request signal and importing the result of the arbitration, a bus access unit for accessing a bus through the processing ...

Articulated bus, in particular of the type with a low floor, whereby said bus has a pulling vehicle (1), a pulled vehicle (2) and an articulated mechanism which connects both vehicles to one another and which contains a rotary junction (3) with a lower part (13) which is connected to the pulling vehicle (1) and an upper part (14) mounted thereupon in a rotating manner around an upward axis of rotation to which the pulled vehicle (2) is connected, whereby the connection between either of these pa...

A bus system including a bus user apparatus and a method for communicating via the bus system are disclosed. The bus user apparatus includes means for means for selectively coupling a transmitter to the transmission line according to a protocol of the bus system. The bus system provides bi-directional communication over a single transmission line. The transmitter of the transmitting device is coupled to the transmission line during transmission. Upon completion of transmission, the transmitting ...

An apparatus including a protocol watcher adapted for use with a bus, a state machine adapted to detect known bug signatures on the bus, and a perturber adapted to intervene on the bus to prevent occurrence of bugs having those signatures. A system utilizing such includes a bus, a first agent coupled to the bus, a second agent coupled to the bus for communicating to the first agent according to a bus protocol, and the bus patcher coupled to the bus for monitoring a communication from the second ...

Subject of the invention is a serial bus system with two data lines (10, 12), connected at one end to a central bus subscriber (14) and to an active bus subscriber at the other end (16). The central and the active bus subscriber transmits status messages over the bus (10, 12) whose bus lines are physically passed through in the bus subscribers (18, 20) between the two ends. In case of missing status messages or error in the status messages, the central bus subscriber (14) brings the bus system i...

A shelf for bus wherein shelf brackets are fitted into first and second rails to enable the shelf brackets to be uniformly intervened therebetween, thereby allowing shelf plates to be identical in length thereof thus, reducing production cost. A lens is rotably and slidably opened and closed relative to a shelf plate, enabling easy replacement of the lens and lamp. The shelf includes a first rail extensively secured lengthwise to a roof frame of the bus, a second rail securely installed at a sid...

An optical bus for distributing optical signals. In one form, the optical bus comprises an optical fiber comprising an integrated array of thermal switches at predetermined intervals. In another form, the optical bus comprises an optical fiber comprising an integrated array of optical beam splitters at predetermined intervals.