Abstract: A combination of hardware and software collect profile data for asynchronous events, at code region granularity. An exemplary embodiment is directed to collecting metrics for prefetching events, which are asynchronous in nature. Instructions that belong to a code region are identified using one of several alternative techniques, causing a profile bit to be set for the instruction, as a marker. Each line of a data block that is prefetched is similarly marked. Events corresponding to the profile data being collected and resulting from instructions within the code region are then identified. Each time that one of the different types of events is identified, a corresponding counter is incremented. Following execution of the instructions within the code region, the profile data accumulated in the counters are collected, and the counters are reset for use with a new code region.

Abstract: Disclosed is an apparatus and method generally related to controlling a multimedia extension control and status register (MXCSR). A processor core may include a floating point unit (FPU) to perform arithmetic functions; and a multimedia extension control register (MXCR) to provide control bits to the FPU. Further an optimizer may be used to select a speculative multimedia extension status register (SPEC_MXSR) from a plurality of SPEC_MXSRs to update a multimedia extension status register (MXSR) based upon an instruction.

Abstract: Techniques are described for providing an enhanced cache coherency protocol for a multi-core processor that includes a Speculative Request For Ownership Without Data (SRFOWD) for a portion of cache memory. With a SRFOWD, only an acknowledgement message may be provided as an answer to a requesting core. The contents of the affected cache line are not required to be a part of the answer. The enhanced cache coherency protocol may assure that a valid copy of the current cache line exists in case of misspeculation by the requesting core. Thus, an owner of the current copy of the cache line may maintain a copy of the old contents of the cache line. The old contents of the cache line may be discarded if speculation by the requesting core turns out to be correct. Otherwise, in case of misspeculation by the requesting core, the old contents of the cache line may be set back to a valid state.

Abstract: Upon an intermediary device on a network being turned on, controlling system software at the intermediary device is booted such that no public network address is ever assigned to the intermediary device. The intermediary device sends a boot message over the network to central authority software running on one or more first computing devices on the network. The central authority software in response sends messages over the network to the intermediary device and to a second computing device on the network to establish a private tunnel with one another. The intermediary device and the second computing device establish the private tunnel with one another over the network. The intermediary device then opens a remote connection to the second computing device through the private tunnel so that peripherals connected to the intermediary device as if they were directly connected to the second computing device.

Abstract: Nodes interconnected by a network have their substantially parallel execution simulated. Substantially parallel execution of the nodes during a current quantum of simulation time having a quantum length is simulated. Simulation of execution can result in simulation of inter-node data packets being transmitted over the network. When the current quantum of simulation time has elapsed, simulation of execution of the nodes is synchronized. If no inter-node data packets were transmitted in simulation during the current quantum of simulation time, then the quantum length is increased. If one or more inter-node data packets were transmitted in simulation during the current quantum of simulation time, then the quantum length is decreased. This process is then repeated for a next quantum of simulation time having the quantum length as has been increased or decreased.

Abstract: A method for simulating a system normally performs functional simulation of the system without performing timing simulation of the system. The method dynamically samples the functional simulation of the system at intervals to determine whether the functional simulation has entered into a new phase. Where the functional simulation has entered into a new phase, the method performs both the functional simulation and the timing simulation of the system for one or more intervals.

Abstract: A method for finding text reading order in a document such as a scanned newspaper or magazine includes the steps of pruning unnecessary text zones using semantic analysis (40), using text correlation measures to cluster zones (41), and then finding a reading order within each of the clusters (42).

Abstract: Upon an intermediary device on a network being turned on, controlling system software at the intermediary device is booted such that no public network address is ever assigned to the intermediary device. The intermediary device sends a boot message over the network to central authority software running on one or more first computing devices on the network. The central authority software in response sends messages over the network to the intermediary device and to a second computing device on the network to establish a private tunnel with one another. The intermediary device and the second computing device establish the private tunnel with one another over the network. The intermediary device then opens a remote connection to the second computing device through the private tunnel so that peripherals connected to the intermediary device as if they were directly connected to the second computing device.

Abstract: Instructions to be executed on a system are simulated. Representative simulation phases of the instructions, which most affect simulation results of the instructions to be executed on the system, are dynamically determined. For each representative simulation phase of the instructions, a model is selected from a number of models that provides specified accuracy with a minimal amount of simulation time, and the representative simulation phase is simulated using the model selected. The simulation results for the instructions to be executed on the system are then output.

Abstract: A method performs functional simulation of a system as influenced by timing simulation of the system. The method performs functional simulation of a system, and periodically performs timing simulation of the system. The functional simulation of the system takes into account the timing simulation of the system that is periodically performed.

Abstract: A method for simulating a system normally performs functional simulation of the system without performing timing simulation of the system. The method dynamically samples the functional simulation of the system at intervals to determine whether the functional simulation has entered into a new phase. Where the functional simulation has entered into a new phase, the method performs both the functional simulation and the timing simulation of the system for one or more intervals.

Abstract: Instructions to be executed on a system are simulated. Representative simulation phases of the instructions, which most affect simulation results of the instructions to be executed on the system, are dynamically determined. For each representative simulation phase of the instructions, a model is selected from a number of models that provides specified accuracy with a minimal amount of simulation time, and the representative simulation phase is simulated using the model selected. The simulation results for the instructions to be executed on the system are then output.

Abstract: An automated document processing system is configured to normalize zones obtained from a document, ant to extract articles from the normalized zones. In one configuration, the system receives at least one zone from the document, and applies at least one zone-breaking factor, thereby creating normalized sub-zones within which text lines are consistent with the at least one zone-breaking factor. The normalized sub-zones may be evaluated to obtain a reading order. Adjacent sub-zones are joined if text similarity exceeds a threshold value. Weakly joined sub-zones are separated where indicated by a topic vectors analysis of the weakly joined sub-zones.

Abstract: A pacemaker is disclosed which reestablishes or keeps the physiological electric conduction of the heart and a method of application. The pacemaker is a pulse generator, it has a ventricular output including at least two superimposed monopolar pulsewaves of reversed polarity between each other, with programmable configuration, with respect to a neutral which can be the pacemaker's metallic box or a third electrode in the case of a tripolar catheter. The catheter can have a deflectable sheath, with an electrode on its distal tip. The invention consists of a new pacemaker, and a method of application in the right ventricular septum, being able to use in order to facilitate the implantation and to avoid the connection and the disconnection, a sheath to check a proper place and then screw the catheter in said place.

Abstract: A method and apparatus are disclosed for treating a condition of a patient's heart includes placing a first electrode and a second electrode in a right ventricle of the heart. A reference electrode is placed within the patient and internal or external to the heart. A pacing signal is generated including a first signal component, a second signal component and a reference component with the first and second signal components having opposite polarity and with both of the first and second components having a potential relative to the reference component. The first component is transmitted to the first electrode. The second component is transmitted to the second electrode. The reference electrode is connected to the reference component which may be an electrical ground. The pacing signal and the placement of the electrodes are selected to alter a contraction of a left ventricle of the heart.

Abstract: An integrated optical device includes a substrate, at least a face of the substrate providing a first cladding layer, the first cladding layer including a mesa formation; a waveguide core formed on the first cladding layer so that the waveguide core substantially covers the mesa formation; and a second cladding layer formed over the waveguide core and the first cladding layer.

Abstract: An integrated optical device includes a substrate, at least a face of the substrate providing a first cladding layer, the first cladding layer including a mesa formation; a waveguide core formed on the first cladding layer so that the waveguide core substantially covers the mesa formation; and a second cladding layer formed over the waveguide core and the first cladding layer.

Abstract: Arrayed Waveguide Grating with Reduced Crosstalk An Arrayed Waveguide Grating (AWG) having reduced adjacent crosstalk is described. Interspersed ones (21) of the output waveguides of the AWG are of different widths to the remaining output waveguides (23), along corresponding portions of their lengths, preferably in at least an initial portion of the fan-out region. Passband unifonmity is maintained by making all the output waveguides substantially of the same width at the output slab coupler. In the illustrative embodiment, alternate ones of the plurality of output waveguides are tapered to a narrower width (W2) between first and second portions (22,24) thereof and the remaining ones of the output waveguides are of a substantially uniform width (W1) between corresponding first and second portions thereof.

Abstract: A method and apparatus for sealing off flow in a pipeline for the purpose of repairing the line includes a combination of a restraining rod and inflation bag which can be installed on either or both sides of the intended site of repair; and a flexible sleeve is provided for use in association with the entry ports and any associated valve members for insertion of the restraining rod and bag to prevent the escape of gas from the line during the insertion procedures. Once the line is repaired, the restraining rod and inflation bag can be removed and the entry ports completely sealed off.