Abstract: Described herein are systems and methods that reduce the latency which may occur when a level one (L1) cache issues a request to a level two (L2) cache, and that ensure that a translation requests sent to an L2 cache are flushed during a context switch. Such a system may include a work queue and a cache (such as an L2 cache). The work queue comprises a plurality of state machines, each configured to store a request for access to memory. The state machines can monitor requests that are stored in the other state machines and requests that the other state machines issue to the cache. A state machine only sends its request to the cache if another state machine is not already awaiting translation data relating to the that request. In this way, the request/translation traffic between the work queue and the cache can be significantly reduced.

Abstract: A syringe delivery system for dispensing a highly viscous material through a syringe delivery opening. The system includes a syringe barrel having a delivery opening, a plunger including a threaded shaft that threadably engages the syringe barrel for selectively dispensing a viscous material through the delivery opening, and a plunger gripping member in gripping communication with the plunger that includes means for sealing the threaded shaft of the plunger so as to prevent contamination by foreign matter. According to one embodiment, a sheath may be included that covers the threaded shaft of the plunger so as to hide the plunger beneath the sheath. The sheath provides a sealed environment for the threaded shaft so as to prevent entrance or contamination by foreign matter.

Abstract: An input shaft brake and disconnect apparatus is provided in a housing between an engine and a transmission. The disconnect apparatus has a first cavity that receives pressurized fluid causing a piston to shift and disconnect an input shaft from a clutch. Pressurized fluid is provided to a second cavity to shift a piston that is associated with a single brake disk or double brake disk that are disposed on one or both sides of an input shaft rotor that is retained on an input shaft. The disconnect apparatus and brake allow for quicker shifting.

Abstract: The present invention is directed to a method, computer program product, and system for processing memory access requests. The method includes the following features. First, page table entries of a page table are organized into at least one fragment that maps logical memory to at least one of logical memory or physical memory. The at least one fragment has a fragment size and an alignment boundary. Then, a subset of the page table entries stored in one of a plurality of cache banks is accessed to determine a mapping between a first logical memory address and at least one of a second logical memory address or a physical memory address. Each cache bank is configured to store at least one page table entry corresponding to a fragment of a predetermined set of fragment sizes and a predetermined alignment boundary.

Abstract: A method and apparatus for fragment processing in a virtual memory system are described. Embodiments of the invention include a coprocessor comprising a virtual memory system for accessing a physical memory. Page table logic and fragment processing logic scan a page table having a fixed, relatively small page size. The page table is broken into fragments made up of pages that are contiguous in physical address space and logical address space and have similar attributes. Fragments in logical address space begin on known boundaries such that the boundary indicates both a starting address of a fragment and the size of the fragment. Corresponding fragments in physical address space can begin anywhere, thus making the process transparent to physical memory. A fragment field in a page table entry conveys both fragment size and boundary information.

Abstract: A syringe delivery system for dispensing a highly viscous material through a syringe delivery opening. The system includes a syringe barrel having a delivery opening, a plunger including a threaded shaft that threadably engages the syringe barrel for selectively dispensing a viscous material through the delivery opening, and a plunger gripping member in griping communication with the plunger that includes means for sealing the threaded shaft of the plunger so as to prevent contamination by foreign matter. According to one embodiment, a sheath may be included that covers the threaded shaft of the plunger so as to hide the plunger beneath the sheath. The sheath provides a sealed environment for the threaded shaft so as to prevent entrance or contamination by foreign matter.

Abstract: An input shaft brake and disconnect apparatus is provided in a housing between an engine and a transmission. The disconnect apparatus has a first cavity that receives pressurized fluid causing a piston to shift and disconnect an input shaft from a clutch. Pressurized fluid is provided to a second cavity to shift a piston that is associated with a single brake disk or double brake disk that are disposed on one or both sides of an input shaft rotor that is retained on an input shaft. The disconnect apparatus and brake allow for quicker shifting.

Abstract: An automated vehicle transmission having a wet clutch and an auxiliary motor that is operatively connected to the transmission to overcome residual torque forces in the wet clutch. Residual torque forces in the wet clutch may prevent disengagement of a gear train and also prevent the transmission from shifting into neutral. A control system determines whether residual torque is resisting the disengagement of the gear train for more than a predetermined time period. According to the method, if a shift is delayed for more than the predetermined time period, the auxiliary motor is actuated to apply an oppositely oriented torque to the transmission gear train to overcome the residual torque and allow the transmission to shift into neutral.

Abstract: An automated vehicle transmission having a wet clutch and an auxiliary motor that is operatively connected to the transmission to overcome residual torque forces in the wet clutch. Residual torque forces in the wet clutch may prevent disengagement of a gear train and also prevent the transmission from shifting into neutral. A control system determines whether residual torque is resisting the disengagement of the gear train for more than a predetermined time period. According to the method, if a shift is delayed for more than the predetermined time period, the auxiliary motor is actuated to apply an oppositely oriented torque to the transmission gear train to overcome the residual torque and allow the transmission to shift into neutral.

Abstract: A multiple working surface magnetic particle device for transferring torque between two rotatable members is disclosed. The magnetic particle device includes relatively rotatable members defining a gap therebetween containing a magnetically reactive medium. The magnetically reactive medium stiffens in the presence of a magnetic field interlocking the rotatable members. The multiple working surface design allows for a reduction in the size and weight of the magnetic field source resulting in a more compact, lighter weight magnetic particle device.

Abstract: A server provides Web responses that can include content from data tables in a database. The server maintains a cache (e.g., in system memory) that can store content (including content from data tables) so as to increase the efficiency of subsequently providing the same content to satisfy client Web requests. The server monitors data tables for changes and, when a change in a particular data table occurs, invalidates cached entries that depend on a particular data table. Further, in response to a client Web request for a Web response, the server assigns a database cache dependency to at least a portion of a constructed Web response (e.g., to content retrieved from a data table) based on commands executed during construction of the Web response. The at least a portion of the constructed Web response is subsequently cached in a cache location at the server.

Abstract: A multiple working surface magnetic particle device for transferring torque between two rotatable members is disclosed. The magnetic particle device includes relatively rotatable members defining a gap therebetween containing a magnetically reactive medium. The magnetically reactive medium stiffens in the presence of a magnetic field interlocking the rotatable members. The multiple working surface design allows for a reduction in the size and weight of the magnetic field source resulting in a more compact, lighter weight magnetic particle device.

Abstract: A water-cooled magnetorheological fluid controlled combination fan drive and water pump (60) used in a cooling system. Introducing a magnetic field within a working chamber (91) between a drive ring (74) and a driven ring (84) increases the viscosity of a magnetorheological fluid by changing the state of the magnetorheological fluid from a free flowing liquid to a semi-solid state. The shear rate of the magnetorheological fluid in an activated state creates additional torque to drive an output shaft (108), and coupled fan (110), at a higher rotational speed to cool the engine coolant flowing through a closely coupled radiator. The rotation of the drive ring (74) also rotates an attached impeller assembly (112) having impellers (114) to move engine coolant through the cooling system.

Abstract: An electronically controlled magnetorheological fluid based fan drive assembly 60 used to increase the rotational speed of a coupled radiator cooling fan. Introducing a magnetic field within a working chamber 99 between a drive ring 74 and an output member 86 increases the viscosity of a magnetorheological fluid by changing the state of the fluid from a free flowing liquid to a semi-solid state. The shear rate of the magnetorheological fluid can be increased to create additional torque to drive the output member 86 and coupled radiator fan at a higher rotational speed to cool the engine coolant flowing through a closely coupled radiator. The magnetic field is induced by directing a flow of electrical current through an electronic coil 62 coupled within the fan drive assembly 60, and an electronic control unit coupled to the electronic coil 62 controls the amount of electrical current flowing through the coil 62.

Abstract: A water-cooled magnetorheological fluid controlled combination fan drive and water pump 60 used in a cooling system. Introducing a magnetic field within a working chamber 91 between a drive ring 74 and a driven ring 84 increases the viscosity of a magnetorheological fluid by changing the state of the magnetorheological fluid from a free flowing liquid to a semi-solid state. The shear rate of the magnetorheological fluid in an activated state creates additional torque to drive an output shaft 108, and coupled fan 110, at a higher rotational speed to cool the engine coolant flowing through a closely coupled radiator. The rotation of the drive ring 74 also rotates an attached impeller assembly 112 having impellers 114 to move engine coolant through the cooling system.

Abstract: An electronically controlled magnetorheological fluid based fan drive assembly 60 used to increase the rotational speed of a coupled radiator cooling fan. Introducing a magnetic field within a working chamber 99 between a drive ring 74 and an output member 86 increases the viscosity of a magnetorheological fluid by changing the state of the fluid from a free flowing liquid to a semi-solid state. The shear rate of the magnetorheological fluid can be increased to create additional torque to drive the output member 86 and coupled radiator fan at a higher rotational speed to cool the engine coolant flowing through a closely coupled radiator. The magnetic field is induced by directing a flow of electrical current through an electronic coil 62 coupled within the fan drive assembly 60, and an electronic control unit coupled to the electronic coil 62 controls the amount of electrical current flowing through the coil 62.

Abstract: A method for tracking and reporting visitor-side web page loading times over a web site where a web page is stored on a first server coupled to a wide area network. The web page is provided with web page code and data mining code which is uploaded through the wide area network to a visitor computer responsive to a request over the wide area network from the visitor computer. The data mining code is operated on the visitor computer to obtain a begin state at a start of the web page load. A state change is then on the visitor computer to an end state caused by a completed upload of the web page to the visitor computer. The process then proceeds with comparing the begin state and the end state to obtain page loading time data and receiving the page loading time data at a second server.