Abstract: A method includes: first identifying, from among one or more items included in a source code of a program, a first item used for storing data input to the program or data output by the program; associating, for each of predetermined ranges configuring the source code, an index value, based on a number of the first items referenced in the relevant predetermined range and the number of times the first item is referenced in the relevant predetermined range, with the relevant predetermined range; and outputting an association result of the index value for each of the predetermined ranges.

Abstract: An analysis apparatus detects dependency relationships between a plurality of code units, classifies the plurality of code units into clusters, based on the dependency relationships, and acquires directory information indicating which of directories each of the plurality of code units belongs to. The analysis apparatus counts, for at least one of the directories, the number of code units belonging to the one directory in each of the clusters. The analysis apparatus calculates an evaluation value indicating the dispersion status of the code units belonging to the one directory, based on the distribution of the number of code units among the clusters.

Abstract: A method includes: first identifying, from among one or more items included in a source code of a program, a first item used for storing data input to the program or data output by the program; associating, for each of predetermined ranges configuring the source code, an index value, based on a number of the first items referenced in the relevant predetermined range and the number of times the first item is referenced in the relevant predetermined range, with the relevant predetermined range; and outputting an association result of the index value for each of the predetermined ranges.

Abstract: A master key (K2,2) inputted by an input unit is stored in a storage unit. A matrix generating unit generates key element matrices (M1-M3) with respect to each of split keys (eR2, eR1, eR3) obtained by a key dividing unit dividing the master key (K2,2). To each coordinate entry of the key element matrices (M1-M3), operation data that successively obtained by repeating a hash operation with a one-way hash function is assigned, so as to maintain hierarchical nature of scalability (L). A key generating unit generates partial keys (K1,1-K2,2) corresponding to respective hierarchies of the scalabilities (R, L), on the basis of the key element matrices (M1-M3). These partial keys (K1,1-K2,2) are outputted to a coding unit or a decoding unit by an output unit.

Abstract: The present invention relates to an image processing method and image inspecting method with high versatility which enable efficient and highly accurate proof of authenticity of a digital image. The image processing method subjects at least a part of a digital image which can exist temporarily or continuously in a falsification-vulnerable environment, to a first morphology operation using a predetermined structuring element, to process the digital image. The image inspecting method subjects the digital image thus processed, to a second morphology operation using the same structuring element as in the first morphology operation. The morphology operations have the idempotent and the presence or absence of falsification can be detected by determining identity of images before and after the second morphology operation.

Abstract: A master key (K2,2) inputted by an input unit is stored in a storage unit. A matrix generating unit generates key element matrices (M1-M3) with respect to each of split keys (eR2, eR1, eR3) obtained by a key dividing unit dividing the master key (K2,2). To each coordinate entry of the key element matrices (M1-M3), operation data that successively obtained by repeating a hash operation with a one-way hash function is assigned, so as to maintain hierarchical nature of scalability (L). A key generating unit generates partial keys (K1,1-K2,2) corresponding to respective hierarchies of the scalabilities (R, L), on the basis of the key element matrices (M1-M3). These partial keys (K1,1-K2,2) are outputted to a coding unit or a decoding unit by an output unit.

Abstract: A speaker array, includes a plurality of speakers which are linearly arranged at a predetermined interval; and one-dimensional digital filters which are provided to correspond to the speakers respectively, in which predetermined filter coefficients are set previously, and which apply a filtering process to input sound data in response to the filter coefficients to output. Sound data derived by applying a digital conversion to input sound signals are supplied to respective one-dimensional digital filters. Sound signals derived by applying an analog conversion to the sound data output from respective one-dimensional digital filters are supplied to corresponding speakers to output a sound in response to the sound signals.

Abstract: The present invention relates to an image processing method and image inspecting method with high versatility which enable efficient and highly accurate proof of authenticity of a digital image. The image processing method subjects at least a part of a digital image which can exist temporarily or continuously in a falsification-vulnerable environment, to a first morphology operation using a predetermined structuring element, to process the digital image. The image inspecting method subjects the digital image thus processed, to a second morphology operation using the same structuring element as in the first morphology operation. The morphology operations have the idempotent and the presence or absence of falsification can be detected by determining identity of images before and after the second morphology operation.

Abstract: The present invention relates to an encryption key generating method ensuring resistance to collusion attacks and achieving reduction in a key length of encryption keys corresponding to respective hierarchies of each scalability. In the encryption key generating method, an encryption key (K2,2) corresponding to data in the lowest hierarchies of hierarchical scalabilities (R, L) is divided as a master key by the number of hierarchies in scalability (R). Key element matrices (M1-M3) generated with respective split keys (eR2, eR1, eR3) are assigned operation data successively obtained by repeating a hash operation with a one-way hash function, so as to maintain hierarchical nature of scalability (L). Partial keys (K1,1-K2,2) corresponding to respective hierarchies of the scalabilities (R, L) are generated by combining key elements coordinately consistent among the key element matrices (M1-M3).

Abstract: The invention relates to a vertical magnetic recording head that records information on a recording medium, such as a magnetic disk, and a magnetic recording apparatus using the same. An object of the invention is to provide a vertical magnetic recording head capable of preventing the leakage of a magnetic field without deteriorating a recording performance and a magnetic recording apparatus using the same. A vertical recording magnetic head is mounted on a slider having a medium facing surface, and includes a main magnetic pole that includes a leading end exposed from the medium facing surface; and side shields that are separated from the side surface of the leading end by a first distance and are retreated from the medium facing surface by a second distance.

Abstract: There is provided a perpendicular recording magnetic head that is able to improve further the magnetic characteristic in writing the magnetic data by magnetizing a magnetic recording medium in the perpendicular direction rather than the prior art. In a perpendicular recording magnetic head, a recording magnetic field output surface of a main pole, which emits a recording magnetic field generated by an exciting coil toward a magnetic recording medium in the perpendicular direction, has a trapezoid shape in which a base on a leading side is longer than a base on a trailing side and has a distribution of a saturation magnetic flux density which is reduced from the trailing side to the leading side, whereby this structure contributes an improvement of the recording density.

Abstract: A thin film magnetic head has a magnetic pole major layer terminated at a position receding from a medium-opposed surface. An intermediate magnetic layer extends forward toward the medium-opposed surface from the surface of the magnetic pole major layer. The intermediate magnetic layer is terminated at a position receding from the medium-opposed surface. A tip magnetic layer extends to the medium-opposed surface from the surface of the intermediate magnetic layer so as to expose the front end at the medium-opposed surface. The layered structure serves to diminish variation in the sectional area of the path of the magnetic flux. Saturation of magnetic flux is sufficiently suppressed irrespective of the reduction in the sectional area. Even if the tip magnetic layer is reduced in lateral width, the tip magnetic layer allows a sufficient leakage of magnetic flux from the front end.

Abstract: A speaker array, includes a plurality of speakers which are linearly arranged at a predetermined interval; and one-dimensional digital filters which are provided to correspond to the speakers respectively, in which predetermined filter coefficients are set previously, and which apply a filtering process to input sound data in response to the filter coefficients to output. Sound data derived by applying a digital conversion to input sound signals are supplied to respective one-dimensional digital filters. Sound signals derived by applying an analog conversion to the sound data output from respective one-dimensional digital filters are supplied to corresponding speakers to output a sound in response to the sound signals.

Abstract: A thin film magnetic head has a magnetic pole major layer terminated at a position receding from a medium-opposed surface. An intermediate magnetic layer extends forward toward the medium-opposed surface from the surface of the magnetic pole major layer. The intermediate magnetic layer is terminated at a position receding from the medium-opposed surface. A tip magnetic layer extends to the medium-opposed surface from the surface of the intermediate magnetic layer so as to expose the front end at the medium-opposed surface. The layered structure serves to diminish variation in the sectional area of the path of the magnetic flux. Saturation of magnetic flux is sufficiently suppressed irrespective of the reduction in the sectional area. Even if the tip magnetic layer is reduced in lateral width, the tip magnetic layer allows a sufficient leakage of magnetic flux from the front end.

Abstract: A portable electronic device receives notification from a base station showing that the amount of energy or fuel remaining in a battery is low. The portable electronic device then has a display showing the remaining amount of energy or fuel in the battery is low in accordance with the notification. Location information is received by a location information receiving section, and is transmitted to the base station. The portable electronic device receives fuel supplying device information showing the location of a device able to supply fuel or give a charge of electricity to the battery from the base station. A supplying device provides the fuel or gives the charge of electricity in accordance with information transmitted from the portable electronic device, and transmits information showing the compensation owed to the base station.

Abstract: A semiconductor device includes a semiconductor substrate having first and second main surfaces; a function element layer having heating element portions generating heat during operation, disposed on the first main surface that is thinned; and a plated heat sink of a heat conductive material, having a thickness equal to or greater than that of the semiconductor substrate, disposed on a circumferential region of the second main surface at the perimeter of the semiconductor substrate inward, on main heat generating regions of the second main surface including regions opposite the heating element portions, and on supporting regions of the second main surface connecting the circumferential region to the main heat generating regions. The semiconductor device maintains the heat generating function and the handling performance of the plated heat sink, reduces internal stress during plating and repeated stress produced by heat cycles during fabricating processes, and lessens chip breakage and plating peeling.

Abstract: A flexbeam for rotor blades of a helicopter comprises a flapping flexible structure forming a mast mounting and flapping part, a flexible structure forming a feathering and lead-lag motion part coupled with the flapping flexible structure, and a rotor blade mounting part located at the free end of the flexible structure and adapted to be coupled with a rotor blade. The feathering and lead-lag motion part comprises an elongated central member made of a composite fiber material, and a pair of elongated frame members disposed along the longitudinal sides of the central member. The frame members are each made of loops of unidirectional composite fiber material and has a Y-shaped cross section. The feathering and lead-lag motion part is fabricated by integrally joining the central member and the frame members along the longitudinal sides of the latter. The Y-shaped cross section has a pair of parallel ribs extending away from the central member.

Abstract: An instrument for use in a skin-stimulating therapy which includes at least one assembly of a plurality of skin-stimulating toothed wheels arranged in parallel relationship with each other, each toothed wheel having a same diameter and a same tooth shape and a casing for pivotally supporting said assembly to allow independent rotation of the toothed wheels, said assembly of the toothed wheels partly projecting outwardly of the casing to constitute a skin-stimulating acupuncturing assembly.

Abstract: A flexbeam for rotor blades of a helicopter comprises a flapping flexible structure forming a mast mounting and flapping part, a flexible structure forming a feathering and lead-lag motion part coupled with the flapping flexible structure, and a rotor blade mounting part located at the free end of the flexible structure and adapted to be coupled with a rotor blade. The feathering and lead-lag motion part comprises an elongated central member made of a composite fiber material, and a pair of elongated frame members disposed along the longitudinal sides of the central member. The frame members are each made of loops of unidirectional composite fiber material and has a Y-shaped cross section. The feathering and lead-lag motion part is fabricated by integrally joining the central member and the frame members along the longitudinal sides of the latter. The Y-shaped cross section has a pair of parallel ribs extending away from the central member.