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| 20090112531 | Determining composite service reliability - The reliability of a composite service having service components is determined, where the composite service can fail only where underlying resources fail. The composite service is represented as a plurality of continuous-time Markov chains (CTMC's). Each CTMC corresponds to a resource. A product of the CTMC's is constructed. The product encompasses composite service states. Steady-state probabilities for the product are determined. Each steady-state probability corresponds to a likelihood that a corresponding state will be a steady state. For each state of the composite service, a reward structure is determined. The reward structure corresponds to a likelihood that the state will successfully use the resources without failure. The reward structure is determined for a given state based on the given state's steady-state probability and based on discrete-time Markov chains (DTMC's) corresponding to the service components. The reliability of the composite service is determined based on the reward structure of each state. | 04-30-2009 |
| 20090132908 | APPARATUS, PROGRAM AND METHOD FOR ACCEPTING A REQUEST FROM A CLIENT COMPUTER VIA A NETWORK AND EXECUTING A WEB APPLICATION - The present invention provides a web application server which executes a process appropriately also with respect to an access from a terminal device which was not recognized by the web application when the application was designed. The web application server includes a DLG file storage unit | 05-21-2009 |
| 20100332444 | AUTOMATIC DESIGNING SYSTEM, AUTOMATIC DESIGNING METHOD AND AUTOMATIC DESIGNING PROGRAM FOR AUTOMATICALLY DESIGNING ARCHITECTURE FOR SYSTEM COMPONENTS - An automatic designing system includes: a rule storage unit storing sets of rewrite rules for rewriting variable nodes of a hierarchically structured graph in a design architecture for the system; a search unit sequentially determining variable nodes as application targets for the rewrite rules by searching the graph, including components in the design architecture for the system to be designed, using a search tree; a judgment unit judging whether the rewrite rule is applicable to the determined variable node; and a rule application unit replacing the determined variable node with a partial graph, including at least one of fixed and variable nodes, according to the rewrite rule, in response to a judgment that the rewrite rule is applicable. The search unit performs the searching until an undefined variable node no longer exists in the graph to be designed, and performs backtracking on condition that no variable node is found. | 12-30-2010 |
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| 20080253269 | POSITIONING SYSTEM MOUNTED ON PROBE MEMORY DEVICE AND POSITIONING METHOD THEREOF - A probe memory device carries out positioning with the use of a servo pattern provided in a servo area on a recording medium, and the recording medium and a probe head section are reciprocatingly moved (scan-moved) by vibration at a specific frequency in a one-axis direction. At this time, based on information from the servo area, relative position information between the recording medium and the probe head section is acquired, the relative position information is processed at a control section, and then, feedback control is carried out for carrying out position correction relative to an actuator. | 10-16-2008 |
| 20090115850 | MOBILE OBJECT IMAGE TRACKING APPARATUS AND METHOD - A mobile object image tracking apparatus includes at least one unit rotating about at least one axis, a camera sensor photographing a mobile object to acquire image data, a unit detecting a tracking error as a tracking error detection value, a unit detecting an angle of the rotary unit, a unit estimating the tracking error as a tracking error estimation value, a unit selecting the tracking error detection value when the mobile object falls within the field of view, and selecting the tracking error estimation value when the mobile object falls outside the field of view, a unit computing an angular velocity instruction value used to drive the rotating unit to track the mobile object, a unit detecting an angular velocity of the rotary unit, and a unit controlling the rotating unit to make zero a difference between the angular velocity instruction value and the angular velocity. | 05-07-2009 |
| 20090262197 | MOVING OBJECT IMAGE TRACKING APPARATUS AND METHOD - An apparatus includes a computation unit computing a moving velocity of a moving object (MO) by differentiation on a first angle of a first-rotation unit and a second angle of a second-rotation unit, a setting unit setting a first-angular velocity of the first-rotation unit and a second-angular velocity of the second-rotation unit as angular-velocity-instruction values when the MO falls outside a correction range, and setting the second-angular velocity and a third-angular velocity as the angular-velocity-instruction values when the MO falls within the correction range, a detection unit detecting a fourth-angular velocity and a fifth-angular velocity of the first-rotation unit and the second-rotation unit, and a control unit controlling a driving unit to eliminate a difference between the fourth-angular velocity and an angular velocity corresponding to the first-rotation unit, and controlling the driving unit to eliminate a difference between the fifth-angular velocity and an angular velocity corresponding to the second-rotation unit. | 10-22-2009 |
| 20100238296 | MOBILE OBJECT IMAGE TRACKING APPARATUS - A mobile object image tracking apparatus includes: a base; a first gimbal; a second gimbal; an image guiding passage configured to guide an image received through an input opening portion of the second gimbal to the base; an image capturing device; an angle sensor; a tracking error detector configured to detect a first tracking error of an image data; a delay circuit; a tracking error calculator configured to calculate a second tracking error based on the first tracking error, a delayed first rotation angle, and a delayed second rotation angle; an angular velocity processor configured to generate a first target angular velocity and a second target angular velocity based on the first rotation angle, the second rotation angle, and the second tracking error; and an actuator controller configured to control the first gimbal the second gimbal based on the first and second target angular velocities. | 09-23-2010 |
| 20100246886 | MOVING OBJECT IMAGE TRACKING APPARATUS AND METHOD - An apparatus includes a first-computation unit computing first-angular-velocity-instruction values for driving first-and-second-rotation units to track a moving object, using a detected tracking error and a detected angles, when the moving object exists in a first range separate from a zenith by at least a preset distance, a second-computation unit computing second-angular-velocity-instruction values for driving the first-and-second-rotation units to track the moving object and avoid a zenith-singular point, using the detected angles, the detected tracking error and an estimated traveling direction, and a control unit controlling the first-and-second-rotation units to eliminate differences between the first-angular-velocity-instruction values and the angular velocities when the moving object exists in the first range, and controlling the first-and-second-rotation units to eliminate differences between the second-angular-velocity instruction values and the angular velocities when the moving object exists in a second range within the preset distance from the zenith. | 09-30-2010 |
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| 20090153998 | STORAGE MEDIUM REPRODUCING APPARATUS AND STORAGE MEDIUM REPRODUCING METHOD - A storage medium reproducing apparatus includes a storage medium that records data; a reproducing head that reads the data recorded in the storage medium; a positioning controlling unit that performs positioning control of the reproducing head with respect to tracks based on servo signals from the servo area included in the storage medium; and a reproducing processing unit that reproduces the data recorded in data area in the storage medium by reading recording dots of the data area using the reproducing head the position of which is decided on the tracks, wherein the reproducing head has a head width capable of simultaneously reading a plurality of servo dots. | 06-18-2009 |
| 20100079910 | MAGNETIC DISK APPARATUS AND INFORMATION REPRODUCING METHOD - A magnetic disk apparatus includes a magnetic disk that includes a plurality of zones in which a plurality of tracks are arranged for each of circumferences of a spiral, and gaps that are arranged between the zones to have a width a predetermined number of times larger than a track width and that are regions without providing recording bits; and a reproducing element that simultaneously makes an access to the recording bits contained in the tracks, reading information stored in the recording bits, wherein the number of the tracks is one or larger and a sum of one and the predetermined number or smaller in one of the zones. | 04-01-2010 |
| 20100250226 | HYBRID SYSTEM SIMULATION METHOD AND SIMULATION PROGRAM PRDUCT - A technique for enhancing the execution efficiency of simulation of a hybrid system. A continuous system simulator receives a request for evaluation of an event generating conditional expression for an event to be processed by a discrete system simulator, from the discrete system simulator. The event generating conditional expression is evaluated by referring to the value of a first variable describing a continuous system. Until evaluation of the event generating conditional expression indicates true, the continuous system simulator repeats simulation of advancing the current time by a step time interval and evaluation of the event generating conditional expression. When evaluation of the event generating conditional expression indicates true, the continuous system simulator sends current time data and the value of a second variable describing the continuous system which is referred to by the discrete simulator, to the discrete simulator. | 09-30-2010 |
