摘要:
A method for multicasting a message in a computer network is described, in which at least some nodes of a multicast group transmit fault recovery information to other nodes of the group in addition to, or as part of, the message itself. The fault recovery information allows nodes to determine what dissemination responsibility should be assigned to successor nodes in the event that one or more nodes of the multicast group fail.
摘要:
A system and method to adjust dynamically network speed or bandwidth allocation. A network connection is established at some initial speed. The bandwidth usage through the connection is monitored, and when the connection speed becomes congested with data, the connection is dropped and a higher-speed connection is established.
摘要:
A method and apparatus for telephony messaging based on a network of packet telephony messaging (PTM) servers. A message is received at an originating PTM server from an originator for delivery to a target device for a recipient. The message is stored at the originating PTM server. The message is routed from the originating PTM server (possibly via a second and subsequent PTM servers) over a first network to a destination PTM server located near the target device. The recipient is notified of the message by the destination PTM server. The message is delivered to the target device from the second PTM server over a second network in response to a request by the recipient.
摘要:
A system and method to adjust dynamically network speed or bandwidth allocation. A network connection is established at some initial speed. The bandwidth usage through the connection is monitored, and when the connection speed becomes congested with data, the connection is dropped and a higher speed connection is established.
摘要:
A piston ventilator is disclosed herein which uniquely includes an oxygen blending module which supplies oxygen enhancement for aiding patients requiring respiratory treatment. The oxygen blending module supplies a preselected enrichment of oxygen to a piston and cylinder assembly wherein the amount of oxygen permitted to flow therein is continuously monitored and controlled according to the volume above the piston in the cylinder as calculated by a controller. The oxygen blending module includes a flow sensor which monitors the flow of supplemental oxygen into the piston and cylinder assembly, and further includes a primary oxygen control valve which restricts the flow of oxygen through the flow sensor to the piston and cylinder assembly depending on the difference between the calculated desired amount of oxygen and the target amount of oxygen provided to the controller.
摘要:
A method and system for scheduling the use of a computer system resource using a resource planner and a resource provider is provided. In a preferred embodiment, a resource is scheduled for use by a plurality of consumer entities. Each consumer entity may request the commitment of a share of the resource. The method and system utilizes representations of resource usage policy, present commitments of shares of the resource, and present commitments of specified amounts of the resource over specified period of time. The method and system first receives a request from a consumer entity for the commitment of a specified share of the resource. In response, the method and system determines whether the specified share of the resource should be committed to the requesting consumer entity. This determination is based on the representations of resource usage policy and present commitments of shares of the resource. If it is determined that the specified share of the resource should be committed to the requesting consumer entity, then the method and system modifies the representation of present commitments of shares of the resource to commit the specified share of the resource to the requesting consumer entity. The method and system then schedules the use of the resource by the plurality of consumer entity based on the modified representation of present commitments of shares of the resource.
摘要:
A piston ventilator is provided which advantageously monitors the positive end expiratory pressure (PEEP) in a patient circuit for supplying breathable gas to a patient, and controls a shiftable valve element in an exhalation valve to regulate the amount of resistance during the exhalation portion of the patient's breath. The shiftable element is preferably an inflatable diaphragm which receives a pneumatic signal through a signal conduit. The pressure provided by the signal conduit is controlled by the amount of gas vented by a PEEP valve, wherein the greater the opening of the PEEP valve, the greater the amount of gas from the patient circuit is vented therethrough and consequently the less the restriction is provided in the exhalation valve. The primary source of pressure for the breathable gas is provided by a piston ventilator, with make-up pressurization in the patient circuit provided by a secondary source such as a blower to compensate for leakage and to provide pressurization for the signal conduit during the retraction of the piston within the cylinder and consequent exhalation portion of the patient's breath. Supplemental oxygen is provided to the patient circuit during retraction of the piston to ensure adequate oxygen enrichment at the incipient portion of the inhalation portion of the patient's breath.
摘要:
A method and system for scheduling the execution of threads using optional time-specific constraints is provided. In a preferred embodiment, a scheduler schedules the execution of a plurality of threads each specifying either a percentage processor time scheduling constraint, indicating that a certain percentage of processor time should be dedicated to the execution of the thread, or a deadline scheduling constraint, indicating that a specified quantity of work should be done by the thread by a specified time deadline. For each thread specifying a percentage processor time scheduling constraint, the scheduler determines a restart time corresponding to the percentage processor time scheduling constraint. For each thread specifying a deadline scheduling constraint, the scheduler determines a restart time corresponding to the deadline scheduling constraint. The scheduler then utilizes the determined restart times for scheduling the threads by selecting the thread having the earliest restart time for execution.
摘要:
A hand control attachment apparatus, for attaching a hand control member to a steering wheel or the like. A web is extended from a housing of the hand control attachment apparatus. The web member cooperates with an outer surface of the housing so as to secure the hand control attachment apparatus onto the steering wheel or the like. A first end of the web member is secured in a slot of a rotatable bar member which is received in the housing. A second end of the web member loops around a rod which is removably received in the housing. The web member is wound onto the bar member by rotating the bar member so as to tightly secure the hand control attachment apparatus onto the steering wheel or the like. The apparatus is released from the steering wheel by releasing the web member and removing the rod out of the looped end of the web member and the housing. The hand control member is mounted on the housing of the hand control attachment apparatus by a spring member, so as to form a hand control device.
摘要:
A reversible, multiple spray tip spray gun tip assembly includes a tip holder and a turret. In one embodiment, the tip holder has a turret opening and a fluid spray passage that is in communication with the turret opening. The turret has a barrel including a plurality of spaced apart spray tips and a handle to rotate the barrel within the turret opening. Either the tip holder or the turret includes one or more projections while the other of the tip holder or the turret includes a cam surface with which the one or more projections slideable engage such that rotating the turret relative to the tip holder causes the turret to translate relative to the tip holder and to align each of the spray tips with the fluid spray passage in a spray position and a clear position.