Abstract: Provided is a method for controlling a composite attribute of a portable device, including receiving an input signal for controlling a composite attribute, checking an application program activated according to the reception of the input signal, and checking at least one composite attribute defined in the application program, outputting an attribute control matrix interface in which the checked plurality of attributes are arranged based on a given axis of matrix.

Abstract: A content searching method for enabling a user to directly search for desired contents is provided. The content searching method includes displaying a location of a cell including a content being executed in a distribution map, which displays a plurality of cells divided according to a distribution axis, and when a search button is input, redistributing and displaying a location of the cell including the content being executed in a distribution map, which displays a plurality of cells in a changed skin screen depending on a distribution axis having a changed keyword.

Abstract: An audio playback device having a function for adjusting a playback speed, and a method thereof includes, in the audio playback device, stored audio data is decoded and converted into an audio stream in a PCM format, and the audio stream is divided into a high frequency band and a low frequency band at cut-off frequency. The audio stream of the high frequency band is signal-processed using an overlap add (OLA) algorithm, and the audio stream of the low frequency band is down-sampled and signal-processed using a synchronized overlap and add (SOLA) algorithm. Accordingly, calculation time of the stream processor 130 is minimized so that a TSM function is efficiently implemented.

Abstract: A perpendicular magnetic recording medium including a soft magnetic underlayer. The perpendicular magnetic recording medium includes: a lower structural body including an anti-ferromagnetic layer; a first soft magnetic underlayer, a non-magnetic layer, and a second soft magnetic underlayer sequentially formed on the anti-ferromagnetic layer, where the thickness ratio of the second soft magnetic underlayer to that of the first soft magnetic underlayer is designed to be within specific range; and a recording layer formed on the second soft magnetic underlayer. Therefore, noise generated on the soft magnetic underlayer due to external magnetic fields of a magnetic head and a voice coil motor can be reduced greatly.

Abstract: An audio signal control method and apparatus for hearing protection are disclosed. The audio signal control method includes: producing an output level of an audio signal being input; determining whether the ratio of an output time of the audio signal within a preset time duration to a permissible time corresponding to the produced output level is greater than or equal to a limit reference value; and limiting, when the ratio of the output time to the permissible time is greater than or equal to the limit reference value, the output level of the audio signal to a preset level.

Abstract: A method of evaluating a vocal performance of a singer of a karaoke apparatus includes extracting a voice energy, extracting a reference pitch, and comparing the voice energy and an energy corresponding to the reference pitch and evaluating the vocal performance of the singer.

Abstract: An audio playback device having a function for adjusting a playback speed, and a method thereof includes, in the audio playback device, stored audio data is decoded and converted into an audio stream in a PCM format, and the audio stream is divided into a high frequency band and a low frequency band at cut-off frequency. The audio stream of the high frequency band is signal-processed using an overlap add (OLA) algorithm, and the audio stream of the low frequency band is down-sampled and signal-processed using a synchronized overlap and add (SOLA) algorithm. Accordingly, calculation time of the stream processor 130 is minimized so that a TSM function is efficiently implemented.

Abstract: A stereophonic sound output apparatus and an early reflection generation method thereof. The stereophonic sound output apparatus includes an early reflection generator to implement an early reflection when a 5.1 channel audio signal is down-mixed to a 2-channel audio signal to play back a 5.1 channel audio signal through a 2-channel headphone. The early reflection generator generates early reflections in pairs in which there is an appropriate time difference between the left side reflections and the right side reflections by generating an interaural time difference between two input audio signals and filtering. It is possible to copy the characteristics of early reflections in a real listening room. It is also possible to implement an early reflection similar to a real reflection measured in an apparatus for playing back the 5.1 channel audio signal through 2-channel headphone. A natural 5.1 channel effect may also be obtained using little computation.

Abstract: A perpendicular magnetic recording medium including a soft magnetic underlayer. The perpendicular magnetic recording medium includes: a lower structural body including an anti-ferromagnetic layer; a first soft magnetic underlayer, a non-magnetic layer, and a second soft magnetic underlayer sequentially formed on the anti-ferromagnetic layer, where the thickness ratio of the second soft magnetic underlayer to that of the first soft magnetic underlayer is designed to be within specific range; and a recording layer formed on the second soft magnetic underlayer. Therefore, noise generated on the soft magnetic underlayer due to external magnetic fields of a magnetic head and a voice coil motor can be reduced greatly.

Abstract: Provided is a magnetoresistance device. The device includes a substrate, a lower layer formed on the substrate, and a magnetoresistance structure formed on the lower layer, and the lower layer is formed of amorphous ZrxAl1-x (0<x<1) or ZrxAl1-xOy (0<x<1, 0<y<1). In a tunneling magnetoresistance (TMR) device, a tunneling barrier layer is formed of at least one selected from the group consisting of ZrxAl1-xOy (0<x<1, 0<y<1), TixAl1-xOy (0<x<1, 0<y<1), and NbxAl1-xOy (0<x<1, 0<y<1).

Abstract: Provided is a magnetoresistance device. The device includes a substrate, a lower layer formed on the substrate, and a magnetoresistance structure formed on the lower layer, and the lower layer is formed of amorphous ZrxAl1-x (0<x<1) or ZrxAl1-xOy (0<x<1, 0<y<1). In a tunneling magnetoresistance (TMR) device, a tunneling barrier layer is formed of at least one selected from the group consisting of ZrxAl1-xOy (0<x<1, 0<y<1), TixAl1-xOy (0<x<1, 0<y<1), and NbxAl1-xOy (0<x<1, 0<y<1).