Abstract: Provided is an electronic component package for electromagnetic interference shielding. The electronic component package for electromagnetic interference shielding according to an embodiment of the present invention comprises a substrate where electronic components are mounted, a molding member formed on the substrate and the electronic components, a magnetic layer formed on the molding member, and a conductive layer formed on the magnetic layer. Electromagnetic waves generated from the electronic components embeded in the molding member are absorbed in the magnetic layer to thus prevent or reduce harmful influence on other electronic components mounted in adjacent places. In addition, harmful electromagnetic waves generated from the outside may be shielded due to the conductive layer formed on the magnetic layer, thereby protecting electronic components embeded in the molding member from being influenced by the electromagnetic waves.

Abstract: Provided is an electronic component package for electromagnetic interference shielding. The electronic component package for electromagnetic interference shielding according to an embodiment of the present invention comprises a substrate where electronic components are mounted, a molding member formed on the substrate and the electronic components, a magnetic layer formed on the molding member, and a conductive layer formed on the magnetic layer. Electromagnetic waves generated from the electronic components embeded in the molding member are absorbed in the magnetic layer to thus prevent or reduce harmful influence on other electronic components mounted in adjacent places. In addition, harmful electromagnetic waves generated from the outside may be shielded due to the conductive layer formed on the magnetic layer, thereby protecting electronic components embeded in the molding member from being influenced by the electromagnetic waves.

Abstract: Provided are a system and a method for inductive charging of an electronic device, including: a charging pad including a first coil which generates a magnetic field when power is applied; and an electronic device which includes a second coil and charges a battery using an induced current induced in the second coil as the first coil generates the magnetic field, wherein the charging pad performs data communication with the electronic device and moves the electronic device so that the maximum charging value is induced in the second coil. Data communication between the charging pad and the electronic device is fed back in real time, so that the electronic device can be disposed at a position where optimal charging efficiency can be exhibited.

Abstract: Provided are a system and a method for inductive charging of an electronic device, including: a charging pad including a first coil which generates a magnetic field when power is applied; and an electronic device which includes a second coil and charges a battery using an induced current induced in the second coil as the first coil generates the magnetic field, wherein the charging pad performs data communication with the electronic device and moves the electronic device so that the maximum charging value is induced in the second coil. Data communication between the charging pad and the electronic device is fed back in real time, so that the electronic device can be disposed at a position where optimal charging efficiency can be exhibited.

Abstract: A three-dimensional data displaying method includes: rendering a three-dimensional matrix image by arranging meta information representing data entries at coordinates composed of a horizontal axis component, a vertical axis component, and an azimuth component, based on arrangement information, with respect to structured data entries including the meta information and the arrangement information; and displaying the three-dimensional matrix on a screen. The meta information may include a topic word and a visual display, and the arrangement information may include a first classification attribute corresponding to the horizontal axis component, a second classification attribute corresponding to the vertical axis component, and a third classification attribute corresponding to the azimuth component.

Abstract: The present invention relates, in general, to a karaoke system, and, more particularly, to a karaoke system having a song learning function that enables a user to repeatedly listen to songs on a bar or length basis and enables the user to sing songs with accompaniment sounds. The present invention provides a system and method that enables the complete or bar-based singer's song to be repeatedly played back in response to a user's request, thereby enabling the user to sufficiently and conveniently practice one or more bard difficult to sing. The present invention provides a system and method that enables bar-based scores to be indicated, so that the user can be aware of one or more incorrect bars and can intensively practice the corresponding portions using the above-described function, thereby increasing the user's interest and enabling efficient learning.

Abstract: Disclosed is a power amplification apparatus in a communication system. The apparatus includes a high power amplifier for amplifying an input signal; and a lattice panel, one surface of which is in contact with a ground plane of the high power amplifier, the one surface including a first line and a second line. The first line has at least two first etched portions and at least one first copperplate portion, the first copperplate portion being positioned between the first etched portions, and the first copperplate portion being formed at an interval of ? 0 4 , and the second line has at least two second etched portions and at least one second copperplate portion, the second copperplate portion being positioned between the second etched portions, and the second copperplate portion being formed at an interval of ? 0 ? 4 .

Abstract: Disclosed is a power amplification apparatus in a communication system. The apparatus includes a high power amplifier for amplifying an input signal; and a lattice panel, one surface of which is in contact with a ground plane of the high power amplifier, the one surface including a first line and a second line. The first line has at least two first etched portions and at least one first copperplate portion, the first copperplate portion being positioned between the first etched portions, and the first copperplate portion being formed at an interval of ?0/4, and the second line has at least two second etched portions and at least one second copperplate portion, the second copperplate portion being positioned between the second etched portions, and the second copperplate portion being formed at an interval of ?0?/4.

Abstract: A phase shifter which uses Bragg gratings and having tunable phase shift functions with respect to input signals in an RF band without using a separate RF device. The phase shifter includes a dielectric layer, a first conductive layer formed on an upper surface of the dielectric layer lengthwise along the dielectric layer so as to provide a signal path for the input signal, a second conductive layer formed at a first end of a lower surface of the dielectric layer so as to form Bragg gratings lengthwise along the dielectric layer, a third conductive layer formed at a second end of the lower surface of the dielectric layer in line with the second conductive layer so as to form Bragg gratings lengthwise along the dielectric layer, and a moving unit for adjusting a distance between the second conductive layer and the third conductive layer within a predetermined length.

Abstract: The present invention discloses an apparatus for authentication, prevention of forgery/alteration of data recorded by digital voice recorder (DVR) and method thereof. A forgery or alteration prevention unit is installed inside the digital voice recorder or inside the PC connected to the digital voice recorder. The forgery or alteration prevention unit goes through a process to prevent forgery/alteration before audio data is recorded by the digital voice recorder or before audio data is stored at the data storage unit inside the PC. This can be performed by embedding watermark into audio data, by encrypting audio data by a predetermined encryption key, or by inserting a hash value into the audio data. Accordingly, forgery/alteration of audio data recorded by digital voice recorder can be verified.