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公开(公告)号：ES2236708T3
公开(公告)日：2005-07-16
申请号：ES95921157
申请日：1995-06-12
Applicant: SONY CORP
Inventor： OIKAWA YOSHIAKI , TSUTSUI KYOYA , MIYAMORI SHINJI , UENO MASATOSHI
IPC: G10L19/00 , G10L19/02 , G10L19/032 , G10L19/14 , G10L25/00 , G11B20/10 , G11B20/24 , H04B1/66 , H04H5/00
Abstract: EN UN METODO Y DISPOSITIVO PARA CODIFICACION DE SEÑALES DE ACUERDO CON ESTA INVENCION, UN PRIMER CODIFICADOR (124) CODIFICA SEPARADAMENTE COMPONENTES DE RUIDO DE UNA PLURALIDAD DE CANALES Y UN SEGUNDO CODIFICADOR (125) CODIFICA COMUNMENTE COMPONENTES DE RUIDO DE UNA PLURALIDAD DE CANALES. A CONTINUACION, UN ELEMENTO DE DISCRIMINACION (123) DETECTA LAS CARACTERISTICAS DE LOS COMPONENTES DE RUIDO Y SELECCIONA LA SALIDA DE CADA UNO DE LOS CODIFICADORES (124 Y 125) BASANDOSE EN LOS RESULTADOS DISCRIMINADOS. CUANDO LOS COMPONENTES DE RUIDO LA PROPORCION DE COMPRESION DE LOS COMPONENTES DE RUIDO DE UNA PLURALIDAD DE CANALES PUEDEN SER INCREMENTADOS. POR OTRO LADO, CUANDO LOS COMPONENTES NO SON COMUNMENTE CODIFICADOS, SE PUEDEN EVITAR EFECTOS NO DESEADOS DE CODIFICACION COMUN.
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公开(公告)号：DE69532906T2
公开(公告)日：2005-04-21
申请号：DE69532906
申请日：1995-08-16
Applicant: SONY CORP
Inventor： TSUTSUI KYOYA , SHIMOYOSHI OSAMU
IPC: G06F17/14
Abstract: A method and apparatus for encoding input digital data by high-efficiency encoding, a method for transmitting the encoded information and a method and apparatus for reproducing and decoding the transmitted information, are disclosed. For encoding, an input signal is forward orthogonal transformed (303) into spectral signals using a windowing function for forward orthogonal transform having a shape A. For decoding, the spectral signals are inverse orthogonal transformed using a windowing function having a shape B different from the shape A. The degree of concentration of the energy of the spectral distribution may be raised and efficient encoding may be achieved even in case of modified DCT (MDCT) wherein the windowing function needs to satisfy a pre-set constraint.
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公开(公告)号：DE69533500D1
公开(公告)日：2004-10-21
申请号：DE69533500
申请日：1995-03-31
Applicant: SONY CORP
Inventor： TSUTSUI KYOYA , SHIMOYOSHI OSAMU , SONOHARA MITO
Abstract: Input signals are converted into frequency components, the frequency components are separated into first signals composed of tonal components and second signals composed of other components. The first and second signals are respectively encoded and code string to be transmitted or recorded is generated. For example, only the first signals are encoded, and an information substring generated for, e.g., every quantization accuracy information which has a common value and a parameter related to the encoding of the first signals is included in the code string, by using at least either, for example, the number of spectrum components constituting the tonal components which is the parameter related to the separation or, for example, quantization accuracy information which is the parameter related to the encoding of the first signals as reference parameter. Thus, the inputted signals can be encoded more efficiently than conventional.
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公开(公告)号：DE69430891D1
公开(公告)日：2002-08-08
申请号：DE69430891
申请日：1994-04-18
Applicant: SONY CORP
Inventor： TSUTSUI KYOYA , HANEDA NAOYA
Abstract: An information transfer apparatus includes a random access storage medium, request information input means connected to a removable information recording apparatus and information output means connected to the removable information recording apparatus, wherein information is read out at random from the recording medium on the basis of request information inputted through the request information input means, and it is output through the information output means. The information recording apparatus stores temporarily the information inputted through the information input means in the recording means, and then records it into the recording medium consisting of a plurality of recording medium pieces. Accordingly, even when the recording medium has a relatively low write speed, it can record the information correctly and at a high speed. The information transfer apparatus assumes versatile memory constructions, and sequentially transfers the stored information on the basis of the information transfer request signal requesting the information transfer from the information recording apparatus which records and reproduces the inputted information. The information recording apparatus executes recording control so that the inputted information is recorded in a plurality of recording medium pieces in a transverse sequence and in parallel. Accordingly, the information can be recorded in parallel by a simple control into a variety of information recording apparatuses constituted by recording media having various write times, and the information can be transferred at a high speed by using a simple hardware.
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公开(公告)号：BR9806692A
公开(公告)日：2000-09-05
申请号：BR9806692
申请日：1998-03-31
Applicant: SONY CORP
Inventor： TSUTSUI KYOYA , SHIMOYOSHI OSAMU
Abstract: An encoding method and apparatus and a decoding method and apparatus in which the encoded information is decreased in volume and in which the encoding and decoding operations are performed with a smaller processing volume and a smaller buffer memory capacity. The apparatus includes a low range signal splitting circuit (261g, 261h) for separating low-range side signal components (260c,260d) from L and R channel signals (260a,260b) converted by a transform circuit into spectral signal components, and a channel synthesis circuit (261e) for synthesizing (L+R) channel signal components from the L and R channel spectral signal components (260c,260d). The apparatus also includes a high range signal separating circuit (261f) for separating the high range side signal components (260h) from the (L+R) channel signal components (260a,260b), a signal component encoding circuit (261j,261k) for compression-encoding low-range side signal components and a signal component encoding circuit (261i) for compression-encoding the normalization coefficient information obtained on normalization of the (L+R) channel high-range signal components.
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Patent Agency Ranking
公开(公告)号：BR9405445A
公开(公告)日：1999-09-08
申请号：BR9405445
申请日：1994-06-29
Applicant: SONY CORP
Inventor： TSUTSUI KYOYA , SONOHARA MITO
Abstract: A signal encoding apparatus for encoding an acoustic signal. This signal encoding apparatus includes a transform circuit for transforming an inputted acoustic signal into frequency components, a signal component separating circuit for separating an output of the transform circuit into tone characteristic components and noise characteristic components, a tone characteristic encoding circuit for encoding a signal of tone characteristic components, and a noise characteristic component encoding circuit for encoding a signal of noise characteristic components, wherein the tone characteristic component encoding circuit encodes respective signal components of the signal of tone characteristic components so that they respectively have different code lengths to thereby improve efficiency of encoding without degrading sound quality with respect to acoustic signal of tone characteristic.
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公开(公告)号：ID20092A
公开(公告)日：1998-10-01
申请号：ID980463
申请日：1998-03-30
Applicant: SONY CORP
Inventor： TSUTSUI KYOYA , SHIMOYOSHI OSAMU
Abstract: An encoding method and apparatus and a decoding method and apparatus in which the encoded information is decreased in volume and in which the encoding and decoding operations are performed with a smaller processing volume and a smaller buffer memory capacity. The apparatus includes a low range signal splitting circuit (261g, 261h) for separating low-range side signal components (260c,260d) from L and R channel signals (260a,260b) converted by a transform circuit into spectral signal components, and a channel synthesis circuit (261e) for synthesizing (L+R) channel signal components from the L and R channel spectral signal components (260c,260d). The apparatus also includes a high range signal separating circuit (261f) for separating the high range side signal components (260h) from the (L+R) channel signal components (260a,260b), a signal component encoding circuit (261j,261k) for compression-encoding low-range side signal components and a signal component encoding circuit (261i) for compression-encoding the normalization coefficient information obtained on normalization of the (L+R) channel high-range signal components.
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公开(公告)号：CA2233521A1
公开(公告)日：1998-09-30
申请号：CA2233521
申请日：1998-03-30
Applicant: SONY CORP
Inventor： TSUTSUI KYOYA , SHIMOYOSHI OSAMU
IPC: G06F17/14 , G10L19/00 , G11B20/00 , G11B20/10 , H04B1/66 , H04H20/88 , H03M7/00 , G11B23/00 , H04S1/00
Abstract: An encoding method and apparatus and a decoding method and apparatus in which the encoded information is decreased in volume and in which the encoding and decoding operations are performed with a smaller processing volume and a smaller buffer memory capacity. The apparatus includes a low range signal splitting circuit for separating low-range side signal components from L and R channel signals converted by a transform circuit into spectral signal components, and a channel synthesis circuit for synthesizing (L+R) channel signal components from the L and R channel spectral signal components. The apparatus also includes a high range signal separating circuit for separating the high range side signal components from the (L+R) channel signal components, a signal component encoding circuit for compression-encoding low-range side signal components and a signal component encoding circuit for compression-encoding the normalization coefficient information obtained on normalization of the (L+R) channel high-range signal components.
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公开(公告)号：PL174314B1
公开(公告)日：1998-07-31
申请号：PL32268094
申请日：1994-06-29
Applicant: SONY CORP
Inventor： TSUTSUI KYOYA , SONOHARA MITO
Abstract: A signal encoding apparatus for encoding an acoustic signal. This signal encoding apparatus includes a transform circuit for transforming an inputted acoustic signal into frequency components, a signal component separating circuit for separating an output of the transform circuit into tone characteristic components and noise characteristic components, a tone characteristic encoding circuit for encoding a signal of tone characteristic components, and a noise characteristic component encoding circuit for encoding a signal of noise characteristic components, wherein the tone characteristic component encoding circuit encodes respective signal components of the signal of tone characteristic components so that they respectively have different code lengths to thereby improve efficiency of encoding without degrading sound quality with respect to acoustic signal of tone characteristic.
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公开(公告)号：HU213963B
公开(公告)日：1997-11-28
申请号：HU9203758
申请日：1992-03-27
Applicant: SONY CORP
Inventor： SHIMOYOSHI OSAMU , TSUTSUI KYOYA
Abstract: An apparatus for compressing a digital input signal compresses a digital input signal arranged into frames of plural samples. The digital input signal is orthogonally transformed by plural orthogonal transform circuits in blocks derived by dividing the frames by a different divisor in each circuit. The resulting spectral coefficients are quantized using an adaptive number of bits. The output of one orthogonal transform circuit is selected based on the outputs of the orthogonal transform circuits. The digital input signal is divided into plural frequency ranges, and frames are formed in each range. A block length decision circuit determines division of the frames of each range signal into blocks in response to range signal dynamics. The range signals are orthogonally transformed in blocks and the spectral coefficients are quantized. The apparatus also includes a frequency analyzing circuit that derives spectral data points from the input data, and groups them in plural bands. A noise level setting circuit finds the energy in each band and sets a allowable noise level in response to the band energy. A block floating coefficient calculating circuit calculates block floating coefficients based on the maximum spectral data point in each band. A quantizing bit number decision circuit determines the number of bits to use for quantizing in response to the allowable noise level and the block floating coefficients. A quantizing circuit quantizes the spectral data points in response to the quantizing bit number decision circuit.
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