Patent application number | Description | Published |
20080270124 | METHOD AND APPARATUS FOR ENCODING AND DECODING AUDIO/SPEECH SIGNAL - Provided is a method of encoding an audio/speech signal, the method including determining a variable length of a frame, that is, a processing unit of an input signal in accordance with a position of an attack in the input signal; transforming each frame of the input signal to a frequency domain and dividing the frame into a plurality of sub frequency bands; and, if a signal of a sub frequency band is determined to be encoded in the frequency domain, encoding the signal of the sub frequency band in the frequency domain, and if the signal of the sub frequency band is determined to be encoded in a time domain, inverse transforming the signal of the sub frequency band to the time domain and encoding the inverse transformed signal in the time domain. According to the present invention, the audio/speech signal may be efficiently encoded by controlling time resolution and frequency resolution. | 10-30-2008 |
20090037169 | METHOD AND APPARATUS FOR IMPLEMENTING FIXED CODEBOOKS OF SPEECH CODECS AS COMMON MODULE - A method and apparatus for implementing fixed codebooks as a common module are provided. In the method of implementing fixed codebooks of a plurality of speech codecs as a common module, it is possible to include only a part excluding fixed codebooks in a communication terminal or communication system, support various speech codecs without using a chip with high price and high performance, and reduce a memory space that is occupied by the speech codecs by generating a track of a fixed codebook corresponding to a speech codec based on information on the speech codec among the plurality of speech codecs and selecting a codebook vector corresponding to a target signal among codebook vectors constructed with combinations of pulses represented by the generated track. In addition, it is possible to reduce processing complexity as compared with a case of embodying the common fixed codebook module in software by embodying the common fixed codebook module in hardware. In addition, it is possible to improve the entire voice processing performance by applying the latest fixed codebook searching algorithm only to the common fixed codebook, thereby easily applying the latest fixed codebook searching algorithm to the entire voice codec. | 02-05-2009 |
20090089479 | Method of managing memory, and method and apparatus for decoding multi-channel data - A memory management method is provided. In the method, a spatial parameter included in an encoding result is represented as a vector of a time slot and a frequency band in a first domain, a temporary matrix is calculated in the first domain by using the difference between vectors of a current time slot and a previous time slot at the same frequency band and then is stored in a memory, and then a matrix needed to decode the encoding result is represented as a matrix for a time slot and a frequency band in a second domain by using the temporary matrix, thereby reducing the load on the memory for storing matrices on which a decoding operation is performed. | 04-02-2009 |
20100104106 | Audio processing apparatus and method of mobile device - An audio processing apparatus and method for a mobile device are provided. The audio processing apparatus and method may appropriately determine sound source localizations corresponding to a voice signal and an audio signal, and thereby may simultaneously provide a voice call service and a multimedia service. Also, the audio processing apparatus and method may guarantee quality of the voice call service even when simultaneously providing the voice call service and the multimedia service. | 04-29-2010 |
20100166238 | Surround sound virtualization apparatus and method - A surround sound virtualization apparatus and method. The surround sound virtualization apparatus may include an audio decoder to perform head-related transfer function (HRTF) filtering, and a time delay unit to provide a time delay to a plurality of output signals of the audio decoder. | 07-01-2010 |
20100172508 | Method and apparatus of generating sound field effect in frequency domain - A method and apparatus of generating a sound field effect is provided. The sound field effect generating apparatus may generate a frequency coefficient that is frequency-transformed from a direct signal, may generate a reflection signal from the frequency coefficient, may generate an output signal using the frequency coefficient and the reflection signal, and may perform an inverse-frequency transform of the output signal. | 07-08-2010 |
20110091044 | Virtual speaker apparatus and method for processing virtual speaker - A virtual speaker apparatus and a virtual speaker processing method is disclosed. The virtual speaker apparatus uses the closest surround speaker when a virtual speaker to be virtually generated is a back left virtual speaker or a back right virtual speaker. | 04-21-2011 |
20110116638 | Apparatus of generating multi-channel sound signal - An apparatus of generating a multi-channel sound signal is provided. The apparatus may include a sound separator to determine a number (N) of sound signals based on at least one of a mixing characteristic and a spatial characteristic of a multi-channel sound signal when receiving the multi-channel sound signal, and to separate the multi-channel sound signal into N sound signals, the sound signals being generated such that the multi-channel sound signal is separated, and a sound synthesizer to synthesize N sound signals to be M sound signals. | 05-19-2011 |
20110305343 | Method and system decoding audio data with selective power control - Provided is an audio data decoding system and method that may selectively transfer compressed audio data from a top system to at least one audio input buffer of a separately provided and/or separately power management controlled subsystem, restore the compressed audio data to digital pulse code modulation (PCM) data using an audio decoding unit of the subsystem, convert the digital PCM data to analog PCM data or an audio output signal, and output the converted audio output signal. | 12-15-2011 |
20110313778 | METHOD AND APPARATUS FOR ADAPTIVELY ENCODING AND DECODING HIGH FREQUENCY BAND - Provided are a method and apparatus for encoding and decoding an audio signal. According to the present application, a signal of a high frequency band above a preset frequency band is adaptively encoded or decoded in the time domain or in the frequency domain by using a signal of a low frequency band below the preset frequency band. As such, the sound quality of a high frequency signal is not deteriorate even when an audio signal is encoded or decoded by using a small number of bits and thus coding efficiency may be maximized. | 12-22-2011 |
20130103392 | APPARATUS AND METHOD OF REPRODUCING AUDIO DATA USING LOW POWER - A method and apparatus for reproducing audio data using low power are provided. The apparatus may reproduce the audio data by determining a power mode based on a memory resource of an internal memory, and an amount of a memory required for reproducing the audio data, controlling a power based on the determined power mode, and decoding the audio data. | 04-25-2013 |
20140047182 | METHOD AND DEVICE FOR PROCESSSING DATA USING WINDOW - Provided are a data processing method and device using a window. The data processing method may include caching data by applying a window to data stored in a memory on a per channel basis, and transmitting the cached data to a core processor using location information of a point. | 02-13-2014 |
20140108008 | METHOD AND APPARATUS FOR ENCODING AND DECODING AUDIO/SPEECH SIGNAL - Provided is a method of encoding an audio/speech signal, the method including determining a variable length of a frame, that is, a processing unit of an input signal in accordance with a position of an attack in the input signal; transforming each frame of the input signal to a frequency domain and dividing the frame into a plurality of sub frequency bands; and, if a signal of a sub frequency band is determined to be encoded in the frequency domain, encoding the signal of the sub frequency band in the frequency domain, and if the signal of the sub frequency band is determined to be encoded in a time domain, inverse transforming the signal of the sub frequency band to the time domain and encoding the inverse transformed signal in the time domain. According to the present invention, the audio/speech signal may be efficiently encoded by controlling time resolution and frequency resolution. | 04-17-2014 |
20140149125 | METHOD AND APPARATUS FOR ADAPTIVELY ENCODING AND DECODING HIGH FREQUENCY BAND - Provided are a method and apparatus for encoding and decoding an audio signal. According to the present application, a signal of a high frequency band above a preset frequency band is adaptively encoded or decoded in the time domain or in the frequency domain by using a signal of a low frequency band below the preset frequency band. As such, the sound quality of a high frequency signal is not deteriorate even when an audio signal is encoded or decoded by using a small number of bits and thus coding efficiency may be maximized. | 05-29-2014 |
20140257822 | METHOD AND APPARATUS FOR ADAPTIVELY ENCODING AND DECODING HIGH FREQUENCY BAND - Provided are a method and apparatus for encoding and decoding an audio signal. According to the present application, a signal of a high frequency band above a preset frequency band is adaptively encoded or decoded in the time domain or in the frequency domain by using a signal of a low frequency band below the preset frequency band. As such, the sound quality of a high frequency signal is not deteriorate even when an audio signal is encoded or decoded by using a small number of bits and thus coding efficiency may be maximized. | 09-11-2014 |
20140350892 | APPARATUS AND METHOD FOR PROCESSING ULTRASONIC DATA - An apparatus for processing data including a data compressor configured to compress ultrasonic data, and store the compressed ultrasonic data in a memory; and a data decompressor configured to read the stored ultrasonic data from the memory, decompress the read ultrasonic data, and transfer the decompressed ultrasonic data to a processor configured to perform beamforming. | 11-27-2014 |
20140378838 | APPARATUS FOR BEAMFORMING INCLUDING MULTI-CLUSTER ARCHITECTURE - An apparatus for beamforming including a multi-cluster architecture is disclosed, in which, a number of unit clusters including a reconfigurable processor and a co-processor may vary based on requirements. | 12-25-2014 |
20150120306 | METHOD AND APPARATUS FOR QUADRATURE MIRROR FILTERING - A method of performing quadrature mirror filter (QMF) synthesis filtering includes recording new samples corresponding to a current time slot at positions of samples to be discarded in a first array that includes modulated QMF sub-band samples. The method further includes extracting samples from the first array to remove aliasing between adjacent sub-bands, determining filter coefficients corresponding to the extracted samples by using modulo operation, and synthesizing a time domain sample where aliasing is removed by using the extracted samples and the filter coefficients. | 04-30-2015 |
20150279380 | FRAME ERROR CONCEALMENT METHOD AND APPARATUS AND ERROR CONCEALMENT SCHEME CONSTRUCTION METHOD AND APPARATUS - Provided are a frame error concealment method and apparatus and an error concealment scheme construction method and apparatus. The frame error concealment method includes generating a new signal by synthesizing a plurality of previous signals that are similar to a signal of an error frame and reconstructing the signal of the error frame using the generated signal. | 10-01-2015 |
20160035369 | METHOD AND APPARATUS FOR ADAPTIVELY ENCODING AND DECODING HIGH FREQUENCY BAND - Provided are a method and apparatus for encoding and decoding an audio signal. According to the present application, a signal of a high frequency band above a preset frequency band is adaptively encoded or decoded in the time domain or in the frequency domain by using a signal of a low frequency band below the preset frequency band. As such, the sound quality of a high frequency signal is not deteriorate even when an audio signal is encoded or decoded by using a small number of bits and thus coding efficiency may be maximized. | 02-04-2016 |
Patent application number | Description | Published |
20100246069 | HARD DISK DRIVE - An HDD includes a head stack assembly, a voice coil motor, and a retracting pin unit. The retracting pin unit includes a mobile retracting pin generating a retracting force to maintain the actuator arm at a predetermined position by interacting with the magnet when the read/write head is parked, and coupled to the bobbin to be capable of relatively moving with respect to the bobbin toward the magnet when the bobbin is separated from the magnet due to an external shock. A head on disk phenomenon, in which the parking state of the read/write head is removed when an external shock such as a linear shock or a rotary shock, which may be generated as the HDD is installed in a notebook computer, is applied to the HDD, may be reduced. | 09-30-2010 |
20100246070 | HEAD STACK ASSEMBLY AND HARD DISK DRIVE HAVING THE SAME - A hard disk drive includes a head stack assembly including a read/write head mounted thereon and an actuator arm pivoting over a disk around a pivot shaft installed on a base, a pivot shaft holder rotatably supporting the pivot shaft and to which the actuator arm is coupled, and a bobbin provided at the opposite side of the actuator arm with respect to the pivot shaft holder and having a voice coil motor coil installed on at least one surface thereof, a crash stop coupled to the base and restricting displacement of the actuator arm, and a contact area reduction portion provided on at least one of the bobbin and the crash stop and including at least one non-contact section, in which the bobbin and the crash stop do not contact each other, in a contact section of the bobbin and the crash stop, when the bobbin and crash stop contact each other, to reduce the contact area between the bobbin and the crash stop. | 09-30-2010 |
20130001895 | METHODS AND DEVICES FOR SEALING STORAGE DEVICES - An apparatus includes a gasket disposed between a base and a flexible printed circuit bracket. A stiction between the gasket and flexible printed circuit bracket is greater than a stiction between the gasket and the base. The difference in stiction can be provided by differing materials and/or differing contact areas. | 01-03-2013 |