摘要:
The present invention is to provide a system and a method for index reorganization using a partial index transfer in a spatial data warehouse that minimize costs of search, split and readjustment for the index reorganization by organizing and transferring clusters with partial indexes in conformity with an index structure so that the partial indexes can be inserted directly into the existing index, thus ensuring continuous and stable data processes, the index reorganization method comprising: a first step of clustering data extracted from the source database in conformity with an index structure via the builder; a second step of generating partial indexes and transferring the partial indexes to a cluster generated according to the clustering; a third step of recording the transferred partial indexes in physically consecutive spaces, not allocated, in the spatial data warehouse server; and a fourth step of inserting the recorded partial indexes in an existing index.
摘要:
The present invention is related to a method for controlling data transmission in a wireless network system including a plurality of nodes. In accordance with the present invention, a duty cycle of a buffer of a node is configured to be adjusted according to a threshold value and a priority of a data to improve energy efficiency according to a variation of a network traffic, guarantee a prioritized transmission of an emergency data, prevent exclusive use of transmission medium by a certain node, and maximize a packet process rate.
摘要:
A lens unit for a camera module having an optical filter therein is provided. The lens unit includes a casing, a plurality of lenses, an optical filter, and a fixing member. The casing has a light-receiving hole formed in one side thereof and has a structure in which a cavity is formed. The lenses are aligned in the inside of the casing to transmit light that passes through the light-receiving hole. The optical filter is disposed in the inside of the casing to block a partial wavelength of light and the fixing member maintains the lenses and the optical filter at an aligned state in the inside of the casing. A separate optical filter doesn't need to be mounted in the camera module but is integrally formed in the inside of the casing, so that inflow of foreign substance during the manufacturing process is minimized.
摘要:
There is provided a mobile communication device. The mobile communication device includes a housing, a fingerprint recognition sensor for inputting fingerprint data, a rotational unit rotatably coupled to a portion of the housing where a keypad is located, the fingerprint recognition sensor being mounted on a top surface of the fingerprint recognition sensor, and a process unit for performing a user identification process by analyzing the fingerprint data inputted from the fingerprint sensor using a fingerprint recognition algorithm.
摘要:
Disclosed herein is a polishing slurry for chemical mechanical polishing. The polishing slurry comprises polishing particles, which have a particle size distribution including separated fine and large polishing particle peaks. The polishing slurry also comprises polishing particles, which have a median size of 50-150 nm. The present invention provides the slurry having an optimum polishing particle size, in which the polishing particle size is controlled and which is useful to produce semiconductors having fine design rules by changing the production conditions of the slurry. The present invention also provides the polishing slurry and a method of producing the same, in which a desirable CMP removal rate is assured and scratches are suppressed by controlling a polishing particle size distribution, and a method of polishing a substrate.
摘要:
The present invention relates to a millimeter wave frequency band optical oscillator used for an oscillating frequency signal source of millimeter waves transmitted from a repeater to a wireless subscriber in a millimeter wave wireless subscriber communication system for a next-generation (i.e., 5th generation or less) very high speed wireless internet service, wherein a loop mirror and a pair of optical fiber grating mirrors are used. A wavelength fixed type and a wavelength tunable type optical fiber grating mirrors are connected in a serial manner to constitute a dual laser mode resonator capable of simultaneously oscillating two laser modes, which are appropriate to each wavelength. Therefore, it is possible to obtain a laser light source capable of an extremely high frequency (60 GHz or more) modulation by using beat phenomena between two laser modes.
摘要:
Disclosed is a substrate for semiconductor package and a wire bonding method using thereof. The substrate is provided with at least one reference mark on its surface to check a loading position and a shift state of a solder mask. The reference mark is composed of a combination of a reference pattern and a solder mask opening and is positioned in any location on an outer peripheral edge of a die attachment region. The reference mark may take various shapes. A method for checking a solder mask shift using the reference mark includes comparing a design value of the reference pattern and the solder mask opening with the reference pattern and the solder mask opening, which are formed in an actual material. After the solder mask shift is calculated, a wire bonding coordinate is newly constructed in consideration of the solder mask shift. This minimizes the wire bonding error.
摘要:
A vehicle hood hinge is provided, which includes a hinge arm coupled with a hood, and having first and second hinge holes. First and second links are coupled at their upper ends, respectively, to the first and second hinge holes by axial pins. A hinge support having a hinge hole is rotatably coupled with a lower end part of the second link by an axial pin and coupled via coupling holes and bolts with a vehicle body. A slot is longitudinally formed in the hinge support. A plate spring is fixedly mounted at an end of the slot, and formed with a holding shoulder for preventing the hinge pin from deviating from a normal hinge operation position under normal circumstances, but allowing the hinge pin to deviate from the normal hinge operation position by moving along the slot when an external impact is applied.
摘要:
Provided is a message service providing method and portable device supporting the same, which includes generating at least one of a key input signal and a sliding sensor signal; and writing a message by activating a message write window set according to an environment of an application program which is being activated depending on generation of at least one of the key input signal and the sliding sensor signal.