Abstract:
Even in a large-scale network environment in which many clients and many devices exist on a network, this invention allows the network to function as an aggregation of logical small-scale networks in the execution of device driver setup. For this purpose, a management server manages a plurality of clients on the network as client groups, and a plurality of network devices as device groups. The management server then associates each client group with each device group. When a network device belonging to the device group A is newly installed and the power supply is turned on, the network device issues a Hello message indicating entry to the network. Upon receiving the Hello message, the management server transmits a setup request message for a device driver for the network device to only each client belonging to the client group A.
Abstract:
Even in a large-scale network environment in which many clients and many devices exist on a network, this invention allows the network to function as an aggregation of logical small-scale networks in the execution of device driver setup. For this purpose, a management server manages a plurality of clients on the network as client groups, and a plurality of network devices as device groups. The management server then associates each client group with each device group. When a network device belonging to the device group A is newly installed and the power supply is turned on, the network device issues a Hello message indicating entry to the network. Upon receiving the Hello message, the management server transmits a setup request message for a device driver for the network device to only each client belonging to the client group A.
Abstract:
An air/fuel ratio control system for a direct injection spark ignition internal combustion engine which is operated at an ultra-lean burn combustion or at a pre-mixture charged combustion. In the system, a charging efficiency correction coefficient for adjusting a charging efficiency of intake air is determined based at least on the determined desired air/fuel ratio and the form of combustion, and the desired air/fuel ratio is corrected by the coefficient. Then, the output fuel injection amount is determined based at least on the basic fuel injection amount and the corrected desired air/fuel ratio (desired air/fuel ratio correction coefficient). The charging efficiency correction coefficient is determined to be a less value when the engine is operated at the ultra-lean burn combustion than that when the engine is operated at the pre-mixture charged combustion. The coefficient is made different whether or not the operation of EGR is progress. With this, the desired air/fuel ratio is determined adequately and hence, the fuel injection amount can be determined adequately.
Abstract:
Disclosed herein is a solenoid valve driving device having at least two solenoid valves arranged in adjacent relationship. Magnetic fluxes generated in adjacent solenoids of the solenoid valves upon energization thereof are opposite in direction to each other. Accordingly, when the adjacent solenoids are simultaneously energized, a common magnetic circuit between these solenoids is generated to result in an increase in magnetic flux, thereby increasing a magnetic attraction force of each solenoid. Thus, the solenoid valve driving device can sufficiently ensure the magnetic attraction force of each solenoid and can achieve size reduction and power saving.
Abstract:
An information processing apparatus which make it possible to search from an information processing apparatus, for an IPv6-compatible image processing apparatus which has an IPv6 network address designated by the information processing apparatus. A device management application determines search conditions, and specifies information associated with a designated network. Further, the device management application generates a IPv6 multicast address using the thus specified information, transmits a search message designating the IPv6 multicast address, and receives a response transmitted from an image processing apparatus associated with the IPv6 multicast address.
Abstract:
A network management system which is capable of easily identifying devices, and enhancing the operability of a device management application used by a manager. The network management system includes devices, and a server connected to the devices via a network. The server is configured to be capable of communicating with the devices by SNMPv1, SNMPv3 and SLP. When SNMPv1 can be used for a device, the server acquires device information from the device by SNMPv1. When SNMPv1 cannot be used but SNMPv3 can be used for a device, and an SNMPv3 password is registered, the server acquires device information from the device by SNMPv3. When SNMPv1 cannot be used but SNMPv3 can be used for a device, and a SNMPv3 password is not registered, the server acquires device information from the device by SLP.
Abstract:
A network device control unit and method are provided in which, not all MIB objects under the control of the network management software are simultaneously acquired during startup of the network management software so the almost simultaneous flow of a large volume of SNMP packets in the LAN will not occur and along with a simultaneous reduction in the load on communications lines, the load on devices such as the printer and network board processing their SNMP packets will also become small. To accomplish this, windows allocated to individual network peripheral devices on a one to one basis and controlling the network device are utilized as device windows, and information to be displayed on the initial screen of the device window is acquired as the initial sheet and displayed. Device windows also acquire and display different sheet information on the device window when determined an entry has been made by the user requesting display of a different type of sheet information.
Abstract:
An ignition timing control system for a direct injection spark ignition internal combustion engine which is operated at an ultra-lean burn combustion or at a pre-mixture charged combustion. In the system, a desired fuel injection end timing at which injection of the determined fuel injection amount should be ended is determined. Then, the difference between the desired fuel injection end timing and the ignition timing is calculated and is determined whether the difference is less than a predetermined value (crank angle margin), and the ignition timing is corrected by the predetermined value when the difference is determined to be less than the predetermined value, thereby enabling to prevent the overlapping of the fuel injection end timing and the ignition timing from happening and avoiding the problem of misfiring or residual of unburned fuel in the cylinder from occurring.
Abstract:
A control system for an internal combustion engine is configured to suitably control the operation of electromagnetically driven intake valves and/or exhaust valves upon start-up of the engine for reducing the output current of a battery and suppressing a reduction in output voltage at minimum, thereby accurately operating the electromagnetically driven valves. The control system is operated such that when an ignition switch is turned on, the operation of a starter is prohibited and initial attraction for intake valves and exhaust valves is sequentially performed in such a manner that the attracting operations for the valves are not overlapped to each other; and after the initial attraction for all the valves is completed, the operation of the starter is permitted and the start-up of the engine is performed.
Abstract:
A control apparatus for an electromagnetic actuator for driving a mechanical element by using an electromagnetic coil. The control apparatus includes a circulation circuit for circulating current to be supplied to the electromagnetic coil, a capacitor provided in the circulation circuit and to be charged by the current flowing through the circulation circuit, and a unit for, when the current supplied to the electromagnetic coil is stopped, forming a discharge path for discharging the capacitor and flowing current to an opposite direction through the electromagnetic coil. The current supplied to the electromagnetic coil is charged in the capacitor, then when the current having been supplied to the electromagnetic coil is stopped, the electric charge thus accumulated in the capacitor is discharged thereby to flow current to the opposite direction through the electromagnetic coil. Thus, the current caused by the induced electromotive force generated in the electromagnetic coil due to the stop of the supplied current can be canceled, so that the electromagnetic coil can be quickly demagnetized.