39results about How to "Without degrading performance" patented technology

An information reproducing apparatus reproducing information of an information recording medium is disclosed. In the information recording medium, a record area is divided into a plurality of data areas. Also, data are recorded for each of the divided data areas. In addition, management information relating to the data recording is recorded in a predetermined management information area. Further, the management information is updated and recorded in a new management information area every time a predetermined data recording is completed. A receiving part receives, from an external device, an obtaining request for the management information. The obtaining request includes designation of a specific management information area. A management information obtaining part obtains the management information relating to the data recording from the specific management information area designated in the received obtaining request. A reporting part reports, to the external device, the management information relating to the data recording obtained from the designated specific management information area.

An apparatus for enhancing audibility of a far-end speech signal from a far-end user to a near-end user in a telephony system includes a near-end background noise signal level estimator (26) at the near-end user. A near-end speech signal level estimator (24) is also provided at the near-end user. A gain control logic (22) determines a gain (G) for amplification of the far-end speech signal based on both estimated speech and background noise signal levels.

Methods and systems are disclosed for providing secured data transmission and for managing cryptographic keys. One embodiment of the invention provides secure key management when separate devices are used for generating and utilizing the keys. One embodiment of the invention provides secure storage of keys stored in an unsecured database. One embodiment of the invention provides key security in conjunction with high speed decryption and encryption, without degrading the performance of the data network.

A circuit system, capable of further reducing power consumption without degrading performance, has been disclosed and comprises a plurality of circuit units, a power supply for supplying a plurality of power supplies of different voltages, a plurality of power supply selection circuits provided in accordance with each of the plurality of circuit units and selecting a power supply to be supplied to each circuit unit out of the plurality of power supplies of different voltages, and a control circuit for controlling the plurality of power supply selection circuits to select a power supply to be supplied to each circuit unit in accordance with the respective operation states of the plurality of circuit units, wherein each circuit unit uses a power supply selected by the power supply selection circuit as an internal power supply.

An optical system, in particular for endoscopic applications, is disclosed which uses wavelength-compensating optical components, in particular prisms, made of materials with different inter-element coatings and refractive indices to image significantly different wavelength-ranges (VIS and NIR) onto the same image plane of an image acquisition device, such as a CCD sensor.

A bleed duct is configured for bleeding fan air from the fan bypass duct in a turbofan aircraft engine. The bleed duct includes a tubular conduit having an inlet and outlet at opposite ends. The conduit is configured in flow area for recovering pressure from speeding fan air bled therethrough. A shroud extends forwardly from the duct inlet for suppressing dynamic pressure oscillations inside the conduit without degrading the pressure recovery.

Provided are an LDPC decoding apparatus and method using a sequential decoding algorithm having a partial group, capable of reducing the number of an iterative decoding by more than half without degrading the performance and increasing an amount of computation. The LDPC decoding method includes the steps of: receiving a prior probability information (channel values) based on information on channel values associated with distance between symbol signals in constellation related to the received noise and LDPC encoded data, and initializing bit nodes; dividing check nodes into partial groups before updating check node information based on the prior probability information, and performing a decoding by applying a sequential decoding algorithm; determining whether a parity check equations are satisfied; and outputting decoded messages obtained when satisfying the parity check equation or after terminating an iterative processor by a termination algorithm.

For a storage system having plural control units to which plural disk devices are connected, in the method for creating replication in a volume of the disk devices connected to different control units, when receiving update I/O of a replication source during an initial copy for replication, the reflection of update to the replication destination is performed on an extension of the same I/O. When a pair is divided after the completion of copying, the update position is retained on the differential bitmap disposed in the individual control units, and the differential bitmap is merged to one of the control units at a time of resynchronization to perform copy processing.

An embodiment of the invention provides a method and a terminal for preventing sound crosstalk between an external loudspeaker and a microphone, which relate to the communication field. The sound crosstalk between the external loudspeaker and the microphone can be effectively prevented under the conditions that the user experience is satisfied and the cost isn't increased. The method includes detecting whether the hand-free call function of the terminal is started or not after the terminal accesses a call and using a second microphone and the external loudspeaker among a first microphone, a built-in loudspeaker, the second microphone and the external loudspeaker when the hand-free call function is started, and the distance between the first microphone and the external loudspeaker is less than that between the second microphone and the external loudspeaker. The method and the terminal for preventing the sound crosstalk between the external loudspeaker and the microphone are applied to terminal calls.

A wavelength selective switch of the present invention angularly disperses lights output from a plurality of input ports of an input and output optical system, to an X-direction, according to wavelength, by a diffraction grating to supply the dispersed lights to a condenser lens. The condenser lens is arranged so that a center axis thereof is shifted to the X-direction relative to an axis passing through the center of spreading angle to the X-direction of output beams from the diffraction grating, and accordingly, at a non-operating time, the light of each wavelength passed through the condenser lens is incident on each movable mirror being tilted by an offset angle corresponding to a shift amount of the condenser lens. As a result, it becomes possible to block the connection between an input side and an output side at the non-operating time without degrading the performance at an operating time.

To provide a system that can accommodate a greater number of terminals within a limited band and can obtain a higher transmission rate. While the number of frequency signals (spectrums) output in parallel by performing a spread spectrum from the DFT unit of each terminal is 12, the number of sub-carriers constituting one sub-channel is set at 10 or 11. In this case, the users (users A and G) allocated to the sub-channels at both ends of the band will not perform transmission of one frequency signal at the end (one sub-carrier) of all the frequency signals output from the DFT unit, whereas the users (users B to F) allocated to the other sub-channels will not perform transmission of the frequency signals at the ends (two sub-carriers). This transmission can be realized by deleting (clipping) the associated number of signals from both ends or from one end of the frequency signals output from the DFT unit of each terminal and allocating the frequency signals after clipping, to individual sub-channels.

The invention develops a method for improving the strength of a superlight foamed ceramic body by freezing and unfreezing polyvinyl alcohol. The method comprises the following steps: ball-milling and dispersing ceramic slurry, adding a surface hydrophobization modifier and polyvinyl alcohol, regulating the PH value of the slurry to an appropriate range, mechanically stirring and foaming the slurry to obtain particle stable foam slurry, freezing and unfreezing the foam slurry to obtain foam gel. The foam gel is directly sintered after being dried. According to the method, the superlight dry foamed ceramic body (hereinafter referred to as foam body) with the porosity of 92%-98% is obtained. After the polyvinyl alcohol is strengthened through freezing and unfreezing, the strength of the obtained superlight foam body is obviously improved, and the superlight foam body is guaranteed not to be broken in the transportation process. Furthermore, the prepared foam body is excellent in machinability, and is sintered after mechanical processing like cutting and engraving, and the processing cost of the foamed ceramic is lowered.

An illustrative system and method for detecting a wireless terminal in a wireless network by ascertaining information about the wireless terminal's location, thus enabling individualized surveillance and tracking of certain wireless terminals. In some embodiments, the detection is triggered by a signal that is compliant with the Customized Applications for Mobile networks Enhanced Logic (“CAMEL”) protocol. Several kinds of mobile-telecommunications events can trigger detection, including events that do not involve call origination. Advantages include bypassing the home location register when obtaining a location estimate for the wireless terminal and when determining whether a wireless terminal is of interest.

In a self-diagnosing method of a volatile memory device, a processor outputs a self-refresh entrance command and enters a power save mode, and a volatile memory device performs a self-diagnosing operation for a plurality of memory cells in response to the self-refresh entrance command while the processor is in the power save mode.

A droplet discharge head includes: a head body having a surface opposed to an object; a plurality of nozzles aligned on the surface and discharging a droplet to each of positions of the object; and an irradiation part disposed on the surface and irradiating the object with light. In the droplet discharge head, the irradiation part includes i×j pieces of irradiation parts arranged such that i (an integer number of 1 or more) pieces of irradiation parts are aligned in an alignment direction of the nozzles and j (an integer number of 2 or more) pieces of irradiation parts are disposed in a predetermined direction that is orthogonal to the alignment direction of the nozzles and aligned along the predetermined direction.

A hydrogen generation system includes a reformer that produces a hydrogen-containing gas from a raw material and reforming water, a combustor that burns the hydrogen-containing gas and air, an exhaust-gas path, a cooling-water path, a condenser that produces condensed water by exchanging heat between the exhaust gas and the cooling water, a water tank that stores the cooling water, a water pump that feeds the cooling water into the condenser, a reforming-water path along which part of the cooling water is passed into the reformer to serve as reforming water which is branched from the cooling-water path, and a controller. The water tank is disposed at a position higher than the water pump. The water pump is disposed at a position higher than the junction. The controller detects an insufficient supply of the cooling water on the basis of the rotational speed of the water pump.

The invention discloses a solution for realizing multiple organizations and multiple views of BOM data through an NoSQL database. The multiple organizations refer to a netty relationship composed of multiple business organizations and leader-member relations in a large enterprise, wherein the business organizations are such as design, process, production, sale, purchase and the like, and the leader-member relations are such as a group and branches and the like. The multiple views refer to BOM trees corresponding to the same product, and contents or values defined, maintained and viewed by different business organizations are different. For a common man-hour quota, a value maintained by a process department of the group is different from a value maintained by the A branch or the B branch. Therefore, for any same attribute of nodes in the BOM trees, multiple values can be stored in NoSQL data and are distinguished by TAGs. During view definition, attribute values can be defined through one or more TAGs. Through the view definition, different BOM structures, node attributes and attribute values are displayed for the different business organizations.

An intermediate casing for a turbojet fan compartment, including: a shroud centered along a longitudinal axis of the turbine engine; an annular cheek plate centered along the longitudinal axis of the turbine engine and mounted against a downstream face of the shroud; a suspension beam fastened to the cheek plate and extending downstream parallel to the longitudinal axis of the turbine engine; and an AGB suspended from the beam and including an upstream side face spaced apart axially from the cheek plate, a downstream side face opposite the upstream side face, and a plurality of accessories mounted against its downstream side face and distributed about the longitudinal axis of the turbine engine.

The invention provides kyanite-based reinforced ultralight foam ceramic containing a titanium dioxide coating and a preparation method thereof. The kyanite-based reinforced ultralight foam ceramic containing the titanium dioxide coating is prepared through the following steps: with kyanite powder as a raw material and anorthite as a sintering auxiliary agent, carrying out crystallization by utilizing polyvinyl alcohol, carrying out reinforcing by utilizing a ceramic powder hydrophobization modifier, then carrying out freeze drying and sintering so as to obtain foam ceramic, and attaching a titania gel layer on the surface of the foam ceramic by utilizing a negative pressure impregnation process so as to prepare the kyanite-based reinforced ultralight foam ceramic containing the titanium dioxide coating. The kyanite-based reinforced ultralight foam ceramic containing the titanium dioxide coating provided by the invention has uniform pore size, isotropy, good combination among ceramic crystalline grains and good adhesion force between the titanium dioxide coating and the ceramic crystalline grains; no impurity phase is introduced into the prepared foam ceramic, so the performances of ceramic may not be weakened; and a foam ceramic green body has good processability, can be processed through processes like cutting and carving, and has the advantages of high strength, light weight, smooth pores, no defects on the surface and improved thermal shock resistance.

The invention relates to optical fiber apparatus comprising an amplifier having optimal gain excursion over a given wavelength band for given input power, and a filter having a bell-shaped transfer function, with the center wavelength of the filter being tunable over a range that is sufficient to enable the gain excursion of the amplifier over said wavelength band to be reduced when the power received by the amplifier is different from said given input power. The invention makes it possible to match amplifier apparatuses to line losses while minimizing overall loss.