Patent application number | Description | Published |
20090016426 | ENCODER, DECODER, AND THEIR METHODS - An encoder generating a decoded signal with an improved quality by scalable encoding by canceling the characteristic inherent to the encoder and causing degradation of quality of the decoded signal. In the encoder, a first encoding section ( | 01-15-2009 |
20090094024 | CODING DEVICE AND CODING METHOD - A coding device is provided with features in which optimum coding in a higher layer is flexibly carried out based on a coding result of a lower layer and a quality audio signal in limited circumstances is served to users. In this coding device, a basic layer coding unit codes an input signal to generate a basic layer information source code and outputs a linear prediction coefficient (LPC) and a quantum LPC, which are parameters calculated at coding, to an expanded layer control unit. A basic layer decoding unit decodes the basic layer information source code. An adding unit reverses a polarity of a basic layer decoded signal, adds the same to the input signal, and calculates a difference signal. The expanded layer control unit generates expanded layer mode information indicative of a coding mode in an expanded layer based on the LPC and the quantum LPC. An expanded layer coding unit codes the difference signal obtained from the adding unit under control of the expanded layer control unit. | 04-09-2009 |
20090171673 | ENCODING APPARATUS AND ENCODING METHOD - It is possible to provide an encoding device and an encoding method capable of realizing encoding with a very small information amount and a very small calculation amount when encoding higher-band spectrum data according to lower-band spectrum data in a wide-band signal. The device and the method can obtain a high-quality decoded signal even if a large quantization distortion is caused in the lower-band spectrum data. In this device, when encoding higher-band spectrum data in a signal to be encoded, according to lower-band spectrum data in the signal, only for apart (a head portion) of the higher-band spectrum data, the lower-band spectrum data after being quantized is subjected to approximate partial search and higher-band spectrum data is generated according to the search result. | 07-02-2009 |
20090198491 | LSP VECTOR QUANTIZATION APPARATUS, LSP VECTOR INVERSE-QUANTIZATION APPARATUS, AND THEIR METHODS - Disclosed is an LPC vector quantization device capable of quantizing an LSP vector by using correlation between divided vectors. The device includes: a vector dividing unit ( | 08-06-2009 |
20090281811 | TRANSFORM CODER AND TRANSFORM CODING METHOD - A transform coder leading to reduction of degradation of perceptual sound quality even if an adequate number of bits is not assigned. Candidates of a correction scale factor stored in a correction scale factor codebook ( | 11-12-2009 |
20100017198 | ENCODING DEVICE, DECODING DEVICE, AND METHOD THEREOF - Disclosed is a decoding device and others capable of flexibly calculating high-band spectrum data with a high accuracy in accordance with an encoding band selected by an upper-node layer of the encoding side. In this device: a first layer decoding unit ( | 01-21-2010 |
20100017199 | ENCODING DEVICE, DECODING DEVICE, AND METHOD THEREOF - Provided is a decoding device and others which can mitigate the spectrum energy discontinuity and improves the decoded signal quality even when a sub-band is subjected to a spectrum attenuation process in the band extension method. The device includes: a substitution unit ( | 01-21-2010 |
20100017200 | ENCODING DEVICE, DECODING DEVICE, AND METHOD THEREOF - Disclosed is an encoding device which can accurately specify a band having a large error among all the bands by using a small calculation amount. The device includes: a first position identification unit ( | 01-21-2010 |
20100017204 | ENCODING DEVICE AND ENCODING METHOD - Provided is a voice encoding device which can accurately encode a spectrum shape of a signal having a strong tonality such as a vowel. The device includes: a sub-band constituting unit ( | 01-21-2010 |
20100049512 | ENCODING DEVICE AND ENCODING METHOD - Disclosed is an encoding device and others capable of suppressing quantization distortion while suppressing increase of a bit rate when encoding audio or the like. In the device, a dynamic range calculation unit ( | 02-25-2010 |
20100057446 | ENCODING DEVICE AND ENCODING METHOD - Provided is an encoding device which can obtain a sound quality preferable for auditory sense even if the number of information bits is small. The encoding device includes a shape quantization unit ( | 03-04-2010 |
20100106496 | ENCODING DEVICE AND ENCODING METHOD - Provided is an encoding device which can reduce the encoding distortion as compared to the conventional technique and can obtain a preferable sound quality for auditory sense. In the encoding device, a shape quantization unit ( | 04-29-2010 |
20100169081 | ENCODING DEVICE, DECODING DEVICE, AND METHOD THEREOF - An encoding device includes: a frequency region converter which converts an inputted audio signal into a frequency region; a band selector which selects a quantization object band from a plurality of sub bands obtained by dividing the frequency region; and a shape quantizer which quantizes the shape of the frequency region parameter of the quantization object band. When a prediction encoding presence/absence determiner determines that the number of common sub bands between the quantization object band and the quantization object band selected in the past is not smaller than a predetermined value, a gain quantizer performs prediction encoding on the gain of the frequency region parameter of the quantization object band. When the number of common sub bands is smaller than the predetermined value, the gain quantizer non-predictively encodes the gain of the frequency region parameter of the quantization object band. | 07-01-2010 |
20100274558 | ENCODER, DECODER, AND ENCODING METHOD - An encoder capable of reducing the degradation of the quality of the decoded signal in the case of band expansion in which the high band of the spectrum of an input signal is estimated from the low band. In this encoder, a first layer encoding section ( | 10-28-2010 |
20100280833 | ENCODING DEVICE, DECODING DEVICE, AND METHOD THEREOF - Provided is an encoding device which can suppress quality degradation of a decoded signal in a band extension for estimating a high range from a low range of a decoded signal. The encoding device includes: a first layer encoding unit ( | 11-04-2010 |
20100284455 | ENCODING DEVICE, DECODING DEVICE, AND METHOD THEREOF - Provided is an encoding device which divides an input signal into a low-range component and a high-range component and encodes the components in separate encoding units. The encoding device can improve quality of a decoded signal. The encoding device ( | 11-11-2010 |
20100332221 | ENCODING DEVICE, DECODING DEVICE, AND METHOD THEREOF - It is possible to improve quality of a decoding signal in a band spread for estimating a high band from a low band of a decoding signal. A first layer encoding unit ( | 12-30-2010 |
20110004469 | VECTOR QUANTIZATION DEVICE, VECTOR INVERSE QUANTIZATION DEVICE, AND METHOD THEREOF - Disclosed are a vector quantization device and others capable of adaptively adjusting a vector space of a code vector for quantization of a second stage by using a quantization result of a first stage and improving the quantization accuracy. In the device, the first quantization unit ( | 01-06-2011 |
20110137643 | SPECTRAL SMOOTHING DEVICE, ENCODING DEVICE, DECODING DEVICE, COMMUNICATION TERMINAL DEVICE, BASE STATION DEVICE, AND SPECTRAL SMOOTHING METHOD - Disclosed is a spectral smoothing device with a structure whereby smoothing is performed after a nonlinear conversion has been performed for a spectrum calculated from an audio signal, and with which the amount of processing calculation is significantly reduced while maintaining excellent audio quality. With this spectral smoothing device, a sub band division unit ( | 06-09-2011 |
20110307248 | ENCODER, DECODER, AND METHOD THEREFOR - Provided is an encoder which can effectively encode/decode spectrum data of a broad frequency signal in a high frequency range, can dramatically reduce the number of the arithmetic operations to be performed, and can improve the quality of the decoded signal. The encoder comprises a first layer coding unit ( | 12-15-2011 |
20120065984 | DECODING DEVICE AND DECODING METHOD - Provided is a decoding device that can reduce abrupt changes in the number of channels in a decoded signal when transmission errors occur as a result of lost frames in an encoding/decoding system for multichannel signals. Said decoding device is also capable of per-sample smoothing and can reduce degradation of audio quality. In the provided device, a demultiplexer ( | 03-15-2012 |
20120136653 | TRANSFORM CODER AND TRANSFORM CODING METHOD - A transform coding apparatus includes an input scale factor calculating section that calculates an input scale factor having a predetermined number of scale factors associated with an input spectrum as an element, and a codebook that stores a plurality of scale factor candidates having a predetermined number of elements and outputs one scale factor candidate. The transform coding apparatus also includes an error calculating section that calculates an error on a per element basis, a weighted error calculating section that determines a weight on a per element basis and calculates a sum of products of the error and the weight to calculate a weighted error, and a searching section that searches for a scale factor candidate that minimizes the weighted error in the codebook. | 05-31-2012 |
20120203546 | ENCODING DEVICE, DECODING DEVICE AND METHODS THEREFOR - Disclosed is an encoding device, wherein the energy information of a given layer is efficiently encoded using a scalable encoding method in which the band to be encoded is selected in each layer, and the quality of decoded signals can be enhanced. An encoding device ( | 08-09-2012 |
20120209597 | ENCODING APPARATUS, DECODING APPARATUS AND METHODS THEREOF - Disclosed is an encoding apparatus that can efficiently encode a signal that is a broad or extra-broad band signal or the like, thereby improving the quality of a decoded signal. This encoding apparatus includes a band establishing unit ( | 08-16-2012 |
20120215527 | ENCODER APPARATUS, DECODER APPARATUS AND METHODS OF THESE - There is disclosed an encoder apparatus whereby, when a band expanding technique for encoding, based on the spectral data of a lower frequency portion, the spectral data of a higher frequency portion is applied to a lower layer in a hierarchical encoding/decoding system, an efficient encoding can be performed in an upper layer as well, thereby improving the decoded-signal quality. In an encoder apparatus ( | 08-23-2012 |
20120221344 | ENCODER APPARATUS, DECODER APPARATUS AND METHODS OF THESE - A coding apparatus is disclosed which can improve the quality of a decoded signal in a hierarchical coding (scalable coding) scheme in which a coding target band is selected in each hierarchy (layer). Coding apparatus ( | 08-30-2012 |
20120245931 | ENCODING DEVICE, DECODING DEVICE, AND METHODS THEREFOR - Disclosed is an encoding device that improves the quality of a decoded signal in a hierarchical coding (scalable coding) method, wherein a band to be quantized is selected for every level (layer). The encoding device ( | 09-27-2012 |
20120296640 | ENCODING DEVICE AND ENCODING METHOD - Disclosed are an encoding device and encoding method capable of improving the quality of a decoded signal under very low bit rate conditions using a small amount of computation. A spectrum correction unit ( | 11-22-2012 |
20130035943 | ENCODING DEVICE, DECODING DEVICE, ENCODING METHOD AND DECODING METHOD - Disclosed is an encoding device capable of improving decoded signal quality. A local search unit ( | 02-07-2013 |
20130124201 | DECODING DEVICE, ENCODING DEVICE, AND METHODS FOR SAME - Disclosed is a decoding device which can efficiently encode/decode spectral data in a high pass section of a broadband signal. In the disclosed device: a sample group extraction unit ( | 05-16-2013 |
20130176150 | ENCODING DEVICE AND ENCODING METHOD - An encoding device enables the amount of processing operations to be significantly reduced while minimizing deterioration in the quality of an output signal. This encoding device ( | 07-11-2013 |
20130325457 | ENCODING APPARATUS, DECODING APPARATUS, ENCODING METHOD AND DECODING METHOD - An encoding apparatus includes a first layer encoder that encodes a signal, a first layer decoder that decodes first layer encoded data, a first layer error transform coefficient calculator that transforms a first layer error signal into a frequency domain and a second layer encoder that encodes the first layer error transform coefficient to acquire second layer encoded data. The second layer encoder includes a band determiner that determines a band to be encoded by the second layer encoder, and a first shape vector encoder that refers the first layer error transform coefficient included in the band to generate a first shape vector and first shape encoded information, a target gain calculator calculates target gain per subband, a gain vector generator generates a gain vector using a plurality of target gains, and a gain vector encoder encodes the gain vector to acquire gain encoded information. | 12-05-2013 |
20130332150 | ENCODING DEVICE, DECODING DEVICE, AND METHOD THEREOF FOR SPECIFYING A BAND OF A GREAT ERROR - Disclosed is an encoding device which can accurately specify a band having a large error among all the bands by using a small calculation amount. A first position identifier uses a first layer error conversion coefficient indicating an error of a decoding signal for an input signal so as to search for a band having a large error in a relatively wide bandwidth in all the bands of the input signal and generates first position information indicating the identified band. A second position identifier searches for a target frequency band having a large error in a relatively narrow bandwidth in the band identified by the first position identifier and generates second position information indicating the identified target frequency band. An encoder encodes a first layer decoding error conversion coefficient contained in the target frequency band. | 12-12-2013 |
20130332154 | ENCODING APPARATUS, DECODING APPARATUS, ENCODING METHOD AND DECODING METHOD - An encoding apparatus includes a first layer encoder that encodes an input signal, a first layer decoder that decodes the first layer encoded data, a weighting filter that filters a first layer error signal to acquire a weighted first layer error signal, a first layer error transform coefficient calculator that transforms the weighted first layer error signal into a frequency domain, and a second layer encoder that encodes the first layer error transform coefficient. The second layer encoder includes a first shape vector encoder that refers the first layer error transform coefficient to generate a first shape vector and first shape encoded information. A target gain calculator calculates a target gain using the first layer error transform coefficient and the first shape vector, a gain vector generator generates a gain vector, and a gain vector encoder encodes the gain vector to acquire gain encoded information. | 12-12-2013 |
20130339009 | CODING DEVICE, COMMUNICATION PROCESSING DEVICE, AND CODING METHOD - Provided are a coding device, a communication processing device, and a coding method, whereby processing operation load (computational load) is significantly reduced for a configuration which computes either frame energy or sub-frame energy of an input signal, using auto-correlation operations, without causing a decline in the precision of either the frame energy or the sub-frame energy. In a coding device ( | 12-19-2013 |
20140019144 | ENCODING DEVICE, DECODING DEVICE, AND METHOD THEREOF FOR SECIFYING A BAND OF A GREAT ERROR - Disclosed is an encoding device which can accurately specify a band having a large error among all the bands by using a small calculation amount. A first position identifier uses a first layer error conversion coefficient indicating an error of a decoding signal for an input signal so as to search for a band having a large error in a relatively wide bandwidth in all the bands of the input signal and generates first position information indicating the identified band. A second position identifier searches for a target frequency band having a large error in a relatively narrow bandwidth in the band identified by the first position identifier and generates second position information indicating the identified target frequency band. An encoder encodes a first layer decoding error conversion coefficient contained in the target frequency band. | 01-16-2014 |
20140244274 | ENCODING DEVICE AND ENCODING METHOD - An encoding device is disclosed in which frequency domain converters ( | 08-28-2014 |
20150049111 | MAKEUP APPLICATION ASSISTANCE DEVICE, MAKEUP APPLICATION ASSISTANCE METHOD, AND MAKEUP APPLICATION ASSISTANCE PROGRAM - A makeup application assistance device includes: an image acquisition unit that acquires an image obtained by photographing a face; a face part acquisition unit that acquires, from the image, face part regions of the face; a face makeup technique selection unit that selects a face makeup technique, which is a face makeup application method, for each face part; a skin condition acquisition unit that acquires the skin condition of the face; a skin correction makeup technique selection unit that selects, on the basis of the skin condition, a skin correction makeup technique, which is a skin correction makeup application method; and a makeup technique presentation unit that presents the selected face makeup techniques associated with the corresponding face part regions, and presents the selected skin correction makeup technique, to a user. | 02-19-2015 |
20150050624 | MAKEUP APPLICATION ASSISTANCE DEVICE, MAKEUP APPLICATION ASSISTANCE METHOD, AND MAKEUP APPLICATION ASSISTANCE PROGRAM - In order to appropriately assist with the application of makeup, including technical improvements in makeup techniques, a makeup application assistance device includes: an image acquisition unit that acquires an image obtained by photographing a face to which makeup has been applied; an applied makeup technique acquisition unit that acquires applied makeup techniques, which are makeup application methods, from the image; a makeup technique evaluation unit that evaluates the applied makeup techniques by comparing the applied makeup techniques with reference makeup techniques that are to be referenced by a user who applied the makeup; and an evaluation presentation unit that presents the results of the evaluation to the user. | 02-19-2015 |
20150086945 | MAKEUP APPLICATION ASSISTANCE DEVICE, MAKEUP APPLICATION ASSISTANCE SYSTEM, AND MAKEUP APPLICATION ASSISTANCE METHOD - In order to appropriately assist with the application of makeup even when trends in makeup techniques change over time, a server of a makeup application assistance system includes: a makeup technique collection unit that collects information on practical makeup techniques from each of a plurality of people, said information representing makeup techniques selected as targets for practice in the application of makeup by said people; a makeup technique analysis unit that analyzes the information on practical makeup techniques that was collected, and determines a selection criteria for the makeup techniques to be presented to a user; and a makeup technique presentation unit that selects makeup techniques on the basis of the selection criteria that were determined, and presents suggested makeup technique information, which represents the selected makeup techniques, to the user. | 03-26-2015 |