Patent application number | Description | Published |
20080267298 | MOVING IMAGE DECODING DEVICE, BROADCASTING RECEPTION DEVICE, AND MOVING IMAGE DECODING METHOD - According to one embodiment, there is provided a moving image decoding device including a detecting section which detects an error of a macro block from a stream signal composed of a plurality of slices having a plurality of macro blocks, a control section which, when a skip macro block is present in a slice including the macro block where the detecting section detects an error and a CBP value of the macro block in this slice exceeds a threshold, discards macro blocks after the macro block where the CBP value exceeds the threshold, and a decoding section which conceals and decodes the stream signal where the macro block row including the error is discarded by the control section so as to output a moving image signal. | 10-30-2008 |
20090080520 | VIDEO DECODING APPARATUS AND VIDEO DECODING METHOD - According to one embodiment, a video decoding apparatus includes a decoding module configured to decode syntax values of respective macroblocks included in a picture to be decoded in the video stream, an error detection module configured to detect an error in the syntax values decoded by the decoding module, and an error concealment processing module configured to execute, in the case where the picture to be decoded whose error has been detected by the error detection module is an intra-frame prediction picture for which motion compensation prediction processing is not performed, error concealment processing of rewriting the syntax values of the macroblock in which an error has been detected and subsequent macroblocks so as to estimate, from information of the intra-frame prediction picture or data of macroblocks that have been decoded, data of the macroblock in which an error has been detected and subsequent macroblocks. | 03-26-2009 |
20090080524 | VIDEO DECODING APPARATUS AND VIDEO DECODING METHOD - According to one embodiment, a video decoding apparatus which decodes a compression-coded video stream, includes an error detection module configured to detect an error in a syntax values decoded by a decoding module, and an error concealment processing module configured to execute, in the case where the picture to be decoded whose error has been detected by the error detection module is an inter-frame prediction picture for which motion compensation prediction processing is performed, error concealment processing of rewriting the syntax values of the macroblock in which an error has been detected and its subsequent macroblocks so as to estimate, from information of the inter-frame prediction picture or data of macroblocks that have been decoded, data of the macroblock in which an error has been detected and its subsequent macroblocks. | 03-26-2009 |
20090110002 | BROADCAST RECEPTION APPARATUS, TS PACKET REPRODUCTION APPARATUS, BROADCAST RECEPTION METHOD AND PROGRAM - According to one embodiment, a broadcast reception apparatus includes a reception unit which receives a broadcast signal, and outputs a transport stream, a first determination unit which receives the transport stream as TS packets, and determines whether a PES header exists in each TS packet, a second determination unit which determines whether the PES header is normal, when the first determination unit detects the PES header, a search unit which detects a payload start position by searching the TS packet sequentially from the rear end, when the second determination unit determines the PES header to be abnormal, a separator which separates payloads at and after the payload start position, and a decoder which decodes the separated payloads of the TS packets, and outputs video and audio signals. | 04-30-2009 |
20090296961 | Sound Quality Control Apparatus, Sound Quality Control Method, and Sound Quality Control Program - According to one embodiment, sound quality control processing for speech or music is performed by calculating various kinds of characteristic parameters to determine a speech signal and a music signal from an input audio signal and determining the input audio signal closer to the speech signal or music signal based on a score difference between a sum of scores provided to characteristic parameters indicating the speech signal and that of scores provided to characteristic parameters indicating the music signal. | 12-03-2009 |
20090299750 | Voice/Music Determining Apparatus, Voice/Music Determination Method, and Voice/Music Determination Program - According to one embodiment, various characteristic parameters for determining whether an input audio signal is a voice signal or a music signal are calculated and the calculated characteristic parameters are compared with a threshold value for voice determination and a threshold value for music determination. A voice characteristic score is provided to a characteristic parameter indicating voice and a music characteristic score is provided to a characteristic parameter indicating music. Then, based on a difference between a sum total of voice characteristic scores and a sum total of music characteristic scores, it is determined whether the input audio signal is a voice signal or a music signal. | 12-03-2009 |
20100158261 | SOUND QUALITY CORRECTION APPARATUS, SOUND QUALITY CORRECTION METHOD AND PROGRAM FOR SOUND QUALITY CORRECTION - According to one embodiment, various feature parameters are calculated for distinguishing between a speech and music and between music and background sound for an input audio signal. With the feature parameters, score determination is made as to whether the input audio signal is close to a speech signal or a music signal. If the input audio signal is determined to be close to music, the preceding score determination result is corrected considering the influence of background sound. Based on the corrected score value, a sound quality correction process for a speech or music is applied to the input audio signal. | 06-24-2010 |
20110071837 | Audio Signal Correction Apparatus and Audio Signal Correction Method - According to one embodiment, an audio signal correction apparatus has a characteristic extraction module configured to determine whether an input audio signal is a monaural signal or a stereo signal, on the basis of channel information, and to extract a plurality of characteristic parameters for determining whether the input audio signal is a speech signal or a music signal, a signal type determination module configured to calculate a speech/music discrimination score which indicates whether the input audio signal is close to the speech signal or the music signal, on the basis of the plurality of characteristic parameters and a level calculation module configured to calculate, with use of the speech/music discrimination score, output levels of a degree of speech and a degree of music. | 03-24-2011 |
20110235812 | SOUND INFORMATION DETERMINING APPARATUS AND SOUND INFORMATION DETERMINING METHOD - According to one embodiment, a sound information determining apparatus includes: a holding module configured hold a plurality of determining techniques, each of which determines, with respect to a noise of each type that may be present in an input audio signal, whether the noise of corresponding type is present according to a noise characteristic; and a determining module configured to determine whether noise is present in the input audio signal by making use of some of the plurality of the determining techniques held with respect to the noise of each type. | 09-29-2011 |
20120328114 | AUDIO CONTROLLING APPARATUS, AUDIO CORRECTION APPARATUS, AND AUDIO CORRECTION METHOD - According to one embodiment, audio controlling apparatus includes first receiver configured to receive audio signal, second receiver configured to receive environmental sound, masking gain calculator configured to calculate masking gain for each frequency band, based on audio signal and environmental sound, and gain controller configured to smooth masking gain of frequency band that is less than preset threshold frequency in first interval, smooth masking gain of frequency band that is equal to or higher than threshold frequency in second interval that is longer than first interval, and thereby set gain. | 12-27-2012 |
20120328125 | AUDIO CONTROLLING APPARATUS, AUDIO CORRECTION APPARATUS, AND AUDIO CORRECTION METHOD - According to one embodiment, an audio controlling apparatus includes a first receiver configured to receive audio signal, a second receiver configured to receive environmental sound, a temporary gain calculator configured to calculate temporary gain based on environmental sound received by second receiver, a sound type determination module configured to determine sound type of main component of audio signal received by first receiver, and a gain controller configured to stabilize temporary gain that is calculated by temporary gain calculator and set gain, when it is determined that sound type of main component of audio signal received by first receiver is music. | 12-27-2012 |