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公开(公告)号：FR2469050A1
公开(公告)日：1981-05-08
申请号：FR8023364
申请日：1980-10-31
IPC: G11B20/10 , G11B20/14 , H03L7/00 , H04N5/92 , H03L7/06 , H03L7/08 , H03L7/081 , H04N5/926 , H04N9/808 , H03L7/18 , H04N5/93
Abstract: L'invention concerne un circuit oscillateur à commande de phase automatique qui produit un signal d'horloge de sortie dont la phase et la fréquence varient avec celles d'un signal d'information d'entrée qui lui est appliqué Le cicuit comprend une borne d'entrée 64 recevant le signal d'information, un circuit d'accord 63 connecté à la borne d'entrée de façon à laisser passer le signal d'information d'entrée sous forme de signal accordé, et un générateur de signaux d'horloge connecté au circuit d'accord. Le circuit d'accord est un circuit à fréquence variable dont un dispositif d'entrée reçoit ledit signal d'information d'entrée, et dont un circuit d'entrée de commande reçoit un signal de commande Cv représentatif de la fréquence du signal d'information d'entrée Din, le circuit d'accord étant accordé sur la base du signal de commande de façon à laisser passer le signal d'information sous forme de signal accordé depuis une de ses sorties. Il est également prévu une boucle de correction de phase 70 66 afin de compenser les déphasages introduits par le circuit d'accord. L'invention s'applique notamment aux magnétoscopes numériques.
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公开(公告)号：EP1308927A4
公开(公告)日：2005-09-28
申请号：EP01956800
申请日：2001-08-03
Applicant: SONY CORP
Inventor： KONDO TETSUJIRO , WATANABE TSUTOMU , HATTORI MASAAKI , KIMURA HIROTO , FUJIMORI YASUHIRO
IPC: G10L19/26 , G10L21/038 , G10L13/00 , G10L19/04 , G10L101/12
CPC classification number: G10L21/038 , G10L19/26
Abstract: A voice processing device for determining a prediction value of a voice of high sound quality by extracting a prediction tap for predicting a prediction value of a voice of high sound quality from a synthesized voice produced by imparting a linear prediction coefficient determined from a predetermined code and a residual signal to a speech synthesizing filter and by performing a predetermined calculation by using the prediction tap and a predetermined tap coefficient, comprising a prediction tap extracting section (45) for extracting from a synthesized voice a prediction tap used for predicting a voice of interest of high sound quality for which a prediction value is to be determined, a class tap extracting section (46) for extracting a class tap used for categorizing the voice of interest into one of class from a code, a categorizing section (47) for categorizing the voice of interest into a classes on the basis of the class tap, a tap creating section for acquiring a tap coefficient corresponding to the class of the voice of interest from tap coefficients of the respective classes determined by learning, and a prediction section (49) for determining a prediction value of the voice of interest by using the prediction tap and the tap coefficient corresponding to the class of the voice of interest.
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公开(公告)号：EP0671852A4
公开(公告)日：1998-02-25
申请号：EP94925022
申请日：1994-08-30
Applicant: SONY CORP
Inventor： KONDO TETSUJIRO , FUJIMORI YASUHIRO , KAWAGUCHI KUNIO
CPC classification number: H04N19/186 , H04N19/10 , H04N19/115 , H04N19/146 , H04N19/63 , H04N19/647 , H04N19/96
Abstract: A device and method for encoding an image into hierarchical codes. The compression efficiency of the encoding is improved and deterioration of image quality is reduced. Image data are encoded using regressive hierarchical expression and dividing adaptively blocks according to the natures of the data. The encoded hierarchical data obtained by the division are transmitted. Thus, blocks of lower hierarchies can be divided and, as a result, the quantity of information about flat portions of an image can be reduced.
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公开(公告)号：EP0667716A4
公开(公告)日：1996-03-13
申请号：EP94925023
申请日：1994-08-30
Applicant: SONY CORP
Inventor： KONDO TETSUJIRO , FUJIMORI YASUHIRO , KAWAGUCHI KUNIO
CPC classification number: H04N19/98 , H04N19/115 , H04N19/146 , H04N19/61 , H04N19/63
Abstract: A device and method for encoding an image into hierarchical codes. Since the quantizing step width of lower hierarchical data having a higher resolution than that of higher hierarchical data is determined, on the basis of the quantizing step widths determined for the higher hierarchical data having a lower resolution, for every prescribed block of hierarchical data, additional codes indicating the characteristics of quantizers can be eliminated. Therefore the compression efficiency at the time of encoding can be improved and the deterioration of image quality can be reduced.
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公开(公告)号：EP0720375A3
公开(公告)日：1998-05-06
申请号：EP95120278
申请日：1995-12-21
Applicant: SONY CORP
Inventor： KONDO TETSUJIRO , FUJIMORI YASUHIRO , TAKAHASHI KENJI , KAWAGUCHI KUNIO
IPC: H04N7/26
CPC classification number: H04N19/98 , H04N19/115 , H04N19/146 , H04N19/63
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Patent Agency Ranking
公开(公告)号：DE69529888D1
公开(公告)日：2003-04-17
申请号：DE69529888
申请日：1995-12-21
Applicant: SONY CORP
Inventor： KONDO TETSUJIRO , FUJIMORI YASUHIRO , TAKAHASHI KENJI , KAWAGUCHI KUNIO
IPC: H04N7/26
Abstract: A difference signal generated in a prediction encoding process is block-segmented by a block segmenting circuit 2. Thus, the level distribution of the block-segmented difference signal is concentrated to a narrower portion than the level distribution of one entire screen. Reference values DR and MIN of each block of the difference signal are detected. A quantizing step width DELTA and shift data DELTA S are determined corresponding to such reference values and the number of quantizing bits N. A quantizing circuit 6 quantizes the difference signal with DELTA . The difference signal is shifted and quantized so that the level 0 of the difference signal is obtained as 0 on the decoding side. A flag FLG and DELTA that represent the quantized value of the level 0 are transmitted as side information along with the quantized value Q.
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公开(公告)号：NO20082403L
公开(公告)日：2002-06-07
申请号：NO20082403
申请日：2008-05-26
Applicant: SONY CORP
Inventor： KONDO TETSUJIRO , WATANABE TSUTOMU , KIMURA HIROTO , HATTORI MASAAKI , FUJIMORI YASUHIRO
IPC: G10L19/12 , G10L19/26 , G10L21/038
Abstract: A technique for enhancing the quality of speech decoded by a linear predictive decoder, wherein decoded prediction coefficients defining synthesis filter coefficients are obtained. Preset coefficients derived by learning are acquired and used to carry out predictive calculation on the decoded prediction coefficients to obtain predicted values to be used by the synthesis filter. The technique involves learning the preset coefficients using a teacher signal and minimizing a prediction error.
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公开(公告)号：NO20082401L
公开(公告)日：2002-06-07
申请号：NO20082401
申请日：2008-05-26
Applicant: SONY CORP
Inventor： KONDO TETSUJIRO , WATANABE TSUTOMU , KIMURA HIROTO , FUJIMORI YASUHIRO , HATTORI MASAAKI
IPC: G10L19/12 , G10L19/26 , G10L21/038
Abstract: A technique for enhancing the quality of speech decoded by a linear predictive decoder, wherein decoded prediction coefficients defining synthesis filter coefficients are obtained. Preset coefficients derived by learning are acquired and used to carry out predictive calculation on the decoded prediction coefficients to obtain predicted values to be used by the synthesis filter. The technique involves learning the preset coefficients using a teacher signal and minimizing a prediction error.
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公开(公告)号：NO20021631L
公开(公告)日：2002-06-07
申请号：NO20021631
申请日：2002-04-05
Applicant: SONY CORP
Inventor： KONDO TETSUJIRO , WATANABE TSUTOMU , HATTORI MASAAKI , KIMURA HIROTO , FUJIMORI YASUHIRO
IPC: G10L19/12 , G10L19/26 , G10L21/038 , G10L13/00 , G10L19/04
Abstract: A technique for enhancing the quality of speech decoded by a linear predictive decoder, wherein decoded prediction coefficients defining synthesis filter coefficients are obtained. Preset coefficients derived by learning are acquired and used to carry out predictive calculation on the decoded prediction coefficients to obtain predicted values to be used by the synthesis filter. The technique involves learning the preset coefficients using a teacher signal and minimizing a prediction error.
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公开(公告)号：DE69523550T2
公开(公告)日：2002-05-08
申请号：DE69523550
申请日：1995-12-21
Applicant: SONY CORP
Inventor： KONDO TETSUJIRO , FUJIMORI YASUHIRO , TAKAHASHI KENJI , KAWAGUCHI KUNIO
Abstract: A subtraction device subtracts a predicted value generated by a predicting portion from a digital picture signal supplied through an input terminal. The subtraction device generates a difference signal as an output signal. A quantizing portion detects an activity of the difference signal, designates the number of quantizing steps corresponding to the activity, and quantizes the difference signal with the number of quantizing steps. The quantizing portion outputs side information to an output terminal.
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