中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

108 records (took 0.032 seconds)

    Dispositivo de codificación, dispositivo de descodificación y método de los mismos
    1.
    发明专利
    Dispositivo de codificación, dispositivo de descodificación y método de los mismos 未知

    公开(公告)号：ES2473277T3

    公开(公告)日：2014-07-04

    申请号：ES08720310

    申请日：2008-02-29

    Applicant: PANASONIC CORP ,  PANASONIC IP CORP AMERICA

    Inventor： OSHIKIRI MASAHIRO ,  YAMANASHI TOMOFUMI ,  MORII TOSHIYUKI

    IPC: G10L19/24 ,  G10L19/005 ,  G10L19/02

    Abstract: Un aparato de codificación de audio que comprende: una sección de codificación de primera capa (102) accionable para realizar un procesamiento de codificación con respecto a unos coeficientes de transformación de entrada para generar unos datos codificados de primera capa; una sección de descodificación de primera capa (103) accionable para realizar un procesamiento de descodificación usando los datos codificados de primera capa para generar unos coeficientes de transformación descodificados de primera capa; y una sección de codificación de segunda capa (105) accionable para realizar un procesamiento de codificación con respecto a una banda de frecuencia objetivo en la que, en unos coeficientes de transformación de error de primera capa que representan un error entre los coeficientes de transformación de entrada y los coeficientes de transformación descodificados de primera capa, se halla un máximo error, para generar unos datos codificados de segunda capa, donde la sección de codificación de segunda capa comprende: una primera sección de especificación de posición (201) accionable para buscar una primera banda que comprende el máximo error a través de la totalidad de una banda entera, sobre la base de un ancho de banda más amplio que la banda de frecuencia objetivo y un primer tamaño de escalón previamente determinado para generar una primera información de posición que muestra la primera banda especificada; una segunda sección de especificación de posición (202) accionable para buscar la banda de frecuencia objetivo a través de la totalidad de la primera banda, sobre la base de un segundo tamaño de escalón más estrecho que el primer tamaño de escalón para generar una segunda información de posición que muestra la banda de frecuencia objetivo especificada; y una sección de codificación (203) accionable para codificar los coeficientes de transformación de error de primera capa incluidos en la banda de frecuencia objetivo que se especifica sobre la base de la primera información de posición y la segunda información de posición para generar una información codificada.

    Encoding device and encoding method
    2.
    发明专利
    Encoding device and encoding method 未知

    公开(公告)号：AU2008233888B2

    公开(公告)日：2013-01-31

    申请号：AU2008233888

    申请日：2008-02-29

    Applicant: PANASONIC IP CORP AMERICA

    Inventor： MORII TOSHIYUKI ,  OSHIKIRI MASAHIRO ,  YAMANASHI TOMOFUMI

    IPC: G10L19/02 ,  G10L19/08 ,  G10L19/083 ,  G10L19/16

    Abstract: 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 (151) which divides a first layer error conversion coefficient to be encoded into M sub-bands so as to generate M sub-band conversion coefficients; a shape vector encoding unit (152) which performs encoding on each of the M sub-band conversion coefficient so as to obtain M shape encoded information and calculates a target gain of each of the M sub-band conversion coefficients; a gain vector forming unit (153) which forms one gain vector by using M target gains; a gain vector encoding unit (154) which encodes the gain vector so as to obtain gain encoded information; and a multiplexing unit (155) which multiplexes the shape encoded information with the gain encoded information.

    QUANTIZATION DEVICE AND QUANTIZATION METHOD
    3.
    发明专利
    QUANTIZATION DEVICE AND QUANTIZATION METHOD 未知

    公开(公告)号：ZA201301886B

    公开(公告)日：2013-11-27

    申请号：ZA201301886

    申请日：2013-03-13

    Applicant: PANASONIC IP CORP AMERICA

    Inventor： MORII TOSHIYUKI

    IPC: G10L19/00 ,  G10L19/038 ,  G10L19/06 ,  G10L19/07

    Abstract: Provided are a quantization device and quantization method which reduce coding distortion with a small degree of calculation, and achieve adequate coding performance thereby. A multistage vector quantization unit (102) treats a number of candidates N which are designated prior to operation in the first-stage vector quantization unit (201-1), decrements the number of candidates by one beginning with the second-stage vector quantization unit (201-2 - 201-J) and continuing with each stage thereafter, and, if the number of candidates is three or less, assesses the quantization distortion at each such stage, treating the number of candidates at the following stage as a predetermined value P if the quantization distortion is greater than a prescribed threshold, and treating the number of candidates at the following stage as a value Q that is less than the predetermined value P if the quantization distortion is less than or equal to the predetermined threshold.

    Encoding device and encoding method
    4.
    发明专利
    Encoding device and encoding method 未知

    公开(公告)号：AU2008222241B2

    公开(公告)日：2012-11-29

    申请号：AU2008222241

    申请日：2008-02-29

    Applicant: PANASONIC IP CORP AMERICA

    Inventor： YAMANASHI TOMOFUMI ,  MORII TOSHIYUKI ,  OSHIKIRI MASAHIRO

    IPC: G10L19/10 ,  G10L19/02 ,  G10L19/032 ,  G10L19/08

    Abstract: 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 (111) quantizes the shape of an input spectrum with a small number of pulse positions and polarities. The shape quantization unit (111) sets a pulse amplitude width to be searched later upon search of the pulse position to a value not greater than the pulse amplitude width which has been searched previously. A gain quantization unit (112) calculates a gain of a pulse searched by the shape quantization unit (111) for each of bands.

    ENCODER APPARATUS, DECODER APPARATUS AND METHODS OF THESE
    5.
    发明公开
    ENCODER APPARATUS, DECODER APPARATUS AND METHODS OF THESE 有权

    公开(公告)号：EP2500901A4

    公开(公告)日：2016-10-12

    申请号：EP10829713

    申请日：2010-11-11

    Applicant: PANASONIC IP CORP AMERICA

    Inventor： YAMANASHI TOMOFUMI ,  MORII TOSHIYUKI ,  EHARA HIROYUKI

    IPC: G10L19/24 ,  G10L21/02 ,  G10L21/038

    CPC classification number: G10L21/038 ,  G10L19/24

    Abstract: 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 (101), a second layer decoder unit (207) calculates a spectrum (differential spectrum), which is to be encoded in a third layer encoder unit (210) that is an upper layer of the second layer decoder unit (207), by applying such an ideal gain (first gain parameter al) that minimizes the energy of the differential spectrum.

    ENCODING DEVICE, DECODING DEVICE, AND METHODS THEREFOR
    7.
    发明公开
    ENCODING DEVICE, DECODING DEVICE, AND METHODS THEREFOR 审中-公开
    编码，解码装置及其方法

    公开(公告)号：EP2490216A4

    公开(公告)日：2016-10-05

    申请号：EP10823194

    申请日：2010-10-13

    Applicant: PANASONIC IP CORP AMERICA

    Inventor： YAMANASHI TOMOFUMI ,  MORII TOSHIYUKI

    IPC: G10L19/24 ,  G10L19/02 ,  H03M7/30

    CPC classification number: G10L19/24 ,  G10L19/0204 ,  G10L19/0212

    Abstract: 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 (101) is equipped with a second layer encoding unit (205) that selects a first band to be quantized of a first input signal from among a plurality of sub-bands, and that generates second layer encoding information containing first band information of said band; a second layer decoding unit (206) that generates a first decoded signal using the second layer encoding information; an addition unit (207) that generates a second input signal using the first input signal and the first decoded signal; and a third layer encoding unit (208) that selects a second band to be quantized of the second input signal using the first decoded signal, and that generates third layer encoding information.

    SPEECH ENCODING DEVICE, SPEECH DECODING DEVICE, SPEECH ENCODING METHOD, AND SPEECH DECODING METHOD
    9.
    发明申请
    SPEECH ENCODING DEVICE, SPEECH DECODING DEVICE, SPEECH ENCODING METHOD, AND SPEECH DECODING METHOD 审中-公开
    语音编码设备，语音解码设备，语音编码方法和语音解码方法

    公开(公告)号：WO2010103854A3

    公开(公告)日：2011-03-03

    申请号：PCT/JP2010001792

    申请日：2010-03-12

    Applicant: PANASONIC CORP ,  MORII TOSHIYUKI ,  EHARA HIROYUKI

    Inventor： MORII TOSHIYUKI ,  EHARA HIROYUKI

    IPC: G10L19/24 ,  H03M7/30

    CPC classification number: G10L19/24

    Abstract: Provided is a speech encoding device that is capable of performing encoding in an extension encoder even when the core encoder and core decoder of each layer have been interchanged, and that is also capable of performing high precision encoding by using the appropriate codec for each situation. The speech encoding device (100) performs hierarchical encoding of a speech signal by using the information of a lower layer in a higher layer. A core encoder (102) in the speech encoding device (100) generates a code by encoding the speech signal. A core decoder (104) generates a decoded signal by decoding the code generated by the core encoder (102). An adding unit (106) detects the encoding residual between the speech signal and the decoded signal generated by the core decoder (104). An auxiliary analyzing unit (107) inputs the decoded signal and generates lower layer information by conducting analysis processing and adjustment processing. An extension encoder (108) encodes the encoding residual using the speech signal and the lower layer information.

    Abstract translation: 提供一种能够在扩展编码器中进行编码的语音编码装置，即使每层的核心编码器和核心解码器已被互换，并且还能够通过针对每种情况使用适当的编解码器来执行高精度编码。 语音编码装置（100）通过使用较高层中的下层的信息来执行语音信号的分层编码。 语音编码装置（100）中的核心编码器（102）通过对语音信号进行编码来生成代码。 核心解码器（104）通过对由核心编码器（102）产生的代码进行解码来产生解码信号。 添加单元（106）检测语音信号与由核心解码器（104）生成的解码信号之间的编码残差。 辅助分析单元（107）通过进行分析处理和调整处理来输入解码信号并生成下层信息。 扩展编码器（108）使用语音信号和下层信息对编码余数进行编码。

Patent Agency Ranking