158results about How to "Comprehensive performance is small" patented technology

This invention describes a high-performance, log-structured implementation of a RAID subsystem that can be efficiently implemented in software. The methods described here allow the RAID subsystem to achieve high performance without using specialized hardware such as non-volatile memory or hardware XOR/DMA engines. Furthermore, the RAID implementation described here is well suited for supporting many functions required for advanced storage virtualization such as virtual disks, graceful addition and removal of disks, tolerating multi-disk failures, and snapshots.

A method of answering a data request directed to a network of distributed servers includes receiving the data request from a client at a server. The method further includes extracting identifying information of requested data in the data request, using the server. The method further includes obtaining location information of the requested data indicating which of the distributed servers is storing the requested data, by comparing the identifying information to a distributed ledger. The method further includes sending the requested data from the server to the client.

A computer system is arranged to automatically calculate a path along nodes in a virtual world. After the co-ordinates for the virtual world environment have been initially defined (40), including nodes along which a path may travel, the system automatically increases the density of nodes in the environment up to a desired density. New nodes are added between each pair of nodes which have line of sight to each other (44 to 47), dramatically increasing the number of available links and nodes. This is repeated until a sufficient density of nodes is reached and no more nodes are being added (48 and 49).

The present invention relates to a method of, and a system for, enhancing data security, which data is to be executed in an electronic device (101) comprising a secure execution environment (104) to which access is restricted. A basic idea of the present invention is that, at device boot, data in the form of e.g. program code is copied from permanent memory (112) to temporary memory (110). The integrity of this program code must be verified to ensure that the program code has not been altered during the transmission between the memories. Further, a new secret key is generated in the secure execution environment. This new secret key is used by a device processor (103) to encrypt the program code to be stored in the temporary memory in order to ensure that the program code is kept secret during transmission. The device processor thereafter writes the encrypted program code into the temporary memory.

A method for scheduling a first user equipment, UE, with a first performance causing a first self interference of a relay system between a first access link extending between the relay system and the first UE and a relay link extending between the relay system and a base station, BS, and scheduling a second UE with a second performance causing a second self interference of the relay system between a second access link extending between the relay system and the second UE and the relay link extending between the relay system and the BS. Thereby, if the first self interference is larger than the second self interference, the first performance is smaller than the second performance. Alternatively, if the first self interference is smaller than the second self interference, the first performance is larger than the second performance.

A vehicle body reinforcing structure for coping with a small overlap collision may include front side members which may be extended in a longitudinal direction of a vehicle and disposed at left and right sides in a width direction of the vehicle, a crash box which is installed to a front end of the front side member in the longitudinal direction of the vehicle and absorbs and reduces impact when receiving the impact to be deformed, a bumper beam which is disposed in front of the crash box in the longitudinal direction of the vehicle, coupled to the crash box, and extended in the width direction of the vehicle, and a reinforcing member which is coupled to both the crash box and the front side member, and protrudes outside of the bumper beam in the width direction of the vehicle to transfer an impact energy to the front side member.

A gastric partition clip having a folded clip body made of stainless steel for clamping on the body of a patient's stomach to divide a stomach pouch from an upper part of the body of the stomach for enabling food eaten by the patient to pass from the esophagus to the distal stomach and the duodenum through the stomach pouch via an outlet in the stomach pouch. The clip body defines a clamping space adapted to keep the front and back body walls of the body of the stomach in a closed status without compression, and a mouth adapted to guide the front and back body walls of the stomach into the clamping space.

A method and an apparatus for selecting one or more applications running in a data processing system to reduce memory usage according to information received from the applications are described. Notifications specifying the information including application specific memory management capabilities may be received from the applications. A status of memory usage indicating lack of available memory may be determined to notify the selected applications. Accordingly, the notified applications may perform operations for application specific memory management to increase available memory.

The subject invention leverages data sampling techniques to provide an efficient means to determine co-occurrence count estimations for objects and features from relational data, simplifying measure-of-association determinations. By providing an efficient mechanism to estimate co-occurrence counts, instances of the subject invention can be incorporated directly into a database, increasing its versatility and performance for such uses as collaborative filtering recommendations. Other instances of the subject invention can be utilized for enhancing database query selectivity, optimizing query performance through employment of á priori co-occurrence counts.

When associating a plurality of logical devices with one logical volume, the storage controller of the present invention improves the responsive performance thereof by determining the position for allocating the logical devices in accordance with the pattern of access made from the host. One logical volume is constituted by a plurality of logical devices. The control section computes the performance indicator (load) of each logical device in accordance with the pattern of access to the logical volume from the host. The control section computes the performance indicator of each RAID group for the case where each logical device is allocated on the basis of the performance indicator of each logical device. The control section determines a RAID group to allocate each logical device, so that the variance of the performance indicator of the RAID group becomes minimum.

An example of the invention classifies disks drives based on their purpose and associating power-saving policies in multiple classes. The system implements Power On Demand, where a reduced power mode is enabled for every individual component of a storage subsystem. In addition, an embodiment of this invention extends a few power modes used in the prior art and allows almost infinite number of power modes when instructing a disk drive (via its I/O interface such as a SCSI or fiber channel interface) to enter a certain power saving mode. Furthermore, an embodiment of invention teaches a system and methods to save power in a disk system comprising a plurality of disk controllers and a plurality of disk drives, arranged in a plurality of arrays, where each array includes several (e.g., 4-16) disk drives.

An audio decoder includes an arithmetic decoder for providing a plurality of decoded spectral values on the basis of an arithmetically encoded representation of the spectral values, and a frequency-domain-to-time-domain converter for providing a time-domain audio representation using the decoded spectral values. The arithmetic decoder selects a mapping rule describing a mapping of a code value onto a symbol code in dependence on a context state described by a numeric current context value. The arithmetic decoder determines the numeric current context value in dependence on a plurality of previously decoded spectral values. The arithmetic decoder evaluates a hash table, entries of which define both significant state values and boundaries of intervals of numeric context values, in order to select the mapping rule. A mapping rule index value is individually associated to a numeric context value being a significant state value.

In a method for the controlled execution of a program (26), the program (26) being intended for a virtual machine (VM, VM′), on a portable data carrier, wherein the data carrier has a processor that executes at least a first and a second virtual machine (VM, VM′), the program (26) is executed both by the first and by the second virtual machine (VM, VM′). If, during execution of the program (26), a difference is found between the operating state of the first virtual machine (VM) and the operating state of the second virtual machine (VM′), execution of the program is aborted. A data carrier and a computer program product exhibit corresponding features. The invention provides a technique for the controlled execution of a program, which technique prevents security risks due to an attack or a malfunction of the data carrier.

The invention discloses a microstructure cladding monocrystalline optical fiber and a preparation method, which belong to the field of special optical fibers. The microstructure cladding monocrystalline optical fiber is characterized by comprising a fiber core and a microstructure cladding, wherein the microstructure cladding is encircled around the fiber core. In the invention, the microstructure cladding monocrystalline fiber is prepared by adopting a tube bundle stacking step, a heating drawing step and the like. The microstructure cladding monocrystalline optical fiber disclosed by the invention has the beneficial effects that (1) the inhibiting ability of the monocrystalline optical fiber on the high-order mode of a light beam can be controlled through changing materials; (2) the application is wide, and the monocrystalline fiber core-cladding can be made of different materials; and (3) the manufacturing time is short, and the yield is high.

A method of manufacturing a rare earth permanent magnet comprises the steps of: forming a rare earth magnet by applying mechanical processing to a magnet block material, thereby damaging the surface of the magnet and causing a magnetic characteristic (BH)max of the magnet to deteriorate, followed by transforming a rare earth metal or an alloy thereof into fine particles or a vapor, and allowing the fine particles or vapor to diffuse and permeate the magnet, thereby improving the quality of the damaged magnet surface portion so that the magnetic characteristic (BH)max is recovered.