| Patent application number | Description | Published |
|---|
| 20080215344 | METHOD AND APPARATUS FOR EXPANDING BANDWIDTH OF VOICE SIGNAL - A method and apparatus for expanding a bandwidth of an input narrowband voice signal is provided. The narrowband voice signal is analyzed separately for each frame, and a Degree of Voicing (DV) and a Degree of Stationary (DS) are calculated depending on the analysis. A Degree of Difficulty of Bandwidth Expansion (DDBWE) of the narrowband voice signal is calculated based on DV and DS. Bandwidth expansion is controlled according to DDBWE. | 09-04-2008 |
| 20080249772 | APPARATUS AND METHOD FOR ENHANCING SPEECH INTELLIGIBILITY IN A MOBILE TERMINAL - An apparatus and a method for enhancing speech intelligibility in a mobile terminal. A complex spectrum calculator calculates complex spectra of one input frame of an input speech signal by Fourier transform, a speech level calculator calculates its instant levels, an average speech level calculator calculates an average speech level of the speech frame using the instant levels, if the input frame is a speech frame, a scaling factor calculator calculates scaling factors by comparing the average speech level with the instant levels, an HPF characteristic calculator calculates amplitude characteristics using the scaling factors, a HPF high-pass-filters the complex spectra using the amplitude characteristics, a synthesizer converts high-pass-filtered signals to time signals by inverse Fourier transform and synthesizes the time signals, and a combiner outputs an enhanced intelligibility speech signal by combining the synthesized time signal with the input frame. | 10-09-2008 |
| 20090109964 | APPARATUS AND METHOD FOR PLAYOUT SCHEDULING IN VOICE OVER INTERNET PROTOCOL (VoIP) SYSTEM - A method and an apparatus for playout scheduling in a Voice over Internet Protocol (VoIP) system are provided. The method includes acquiring Pulse Code Modulation (PCM) samples by decoding a received packet; setting a first scale ratio according to a length of PCM samples stored in a playout buffer based on a preset scale ratio table; setting a second scale ratio by predicting a packet delay; setting a final scale ratio using the first scale ratio and the second scale ratio; and adjusting the length of the acquired PCM samples at the final scale ratio. | 04-30-2009 |
| 20100156748 | ANTENNA APPARATUS FOR INTERNAL IMPEDANCE MATCHING - An antenna apparatus allows for internal impedance matching by employing an internal matching device therein. The antenna apparatus includes a board body formed of a dielectric material and having a flat structure. The antenna apparatus also includes an antenna device disposed on an upper surface of the board body, and the internal matching device disposed on a lower surface of the board body. The antenna device extends from a feed point and has a first impedance. The internal matching device is connected to the antenna device and has a second impedance used for matching the first impedance with a reference impedance. The antenna device and the internal matching device resonate at the reference impedance in a specific frequency band when a voltage is supplied through the feed point. | 06-24-2010 |
| 20100265152 | MULTI-BAND ANTENNA APPARATUS - A multi-band antenna apparatus using a multiple frequency band is provided. The apparatus includes a substrate body formed in a flat plate structure having a preset thickness and in which at least one dielectric plate is stacked, a power supply line, disposed at the substrate body and connected to an external power source, for forming an electromagnetic field when power is supplied from the external power source, a radiation line, separated from the power supply line using the dielectric plate as the boundary in the substrate body, for forming an overlapping area overlapped with the power supply line along one axis through at least a portion, and for resonating in a frequency band determined according to the overlapping area when the electromagnetic field is formed, and a ground plate disposed in at least one an upper ground area and a lower ground area of the substrate body, for grounding the radiation line by contacting with the radiation line. | 10-21-2010 |
| 20100271282 | EMBEDDED ANTENNA APPARATUS - An embedded antenna apparatus of a communication terminal is provided. The antenna apparatus includes a plate board having a feeding pad disposed on a side of the board; a device carrier mounted on a side of the board to expose the feeding pad; a radiation device including at least two radiation lines extending from the feeding pad to a surface of the device carrier along different paths, the at least two radiation lines radiating at a preset frequency band when electric power is fed through the feeding pad; and a ground plate having a flat plate shape mounted in an edge of the side of the board and disposed perpendicular to the side of the board, and contacting one end each of the at least two radiation lines to ground the radiation device. | 10-28-2010 |
| 20110077064 | APPARATUS AND METHOD FOR ANTENNA MATCHING IN PORTABLE TERMINAL - An apparatus and method for antenna matching according to a position and an angle of a portable terminal is provided. Operations of the portable terminal include, when at least one of a position and an angle of the portable terminal is changed, determining an optimal Tunable Matching Network (TMN) set value corresponding to the position and the angle, and performing antenna matching according to the optimal TMN set value. | 03-31-2011 |
