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    VARIABLE SPEED VOCODER
    2.
    发明专利
    VARIABLE SPEED VOCODER 失效

    公开(公告)号：JP2002023796A

    公开(公告)日：2002-01-25

    申请号：JP2001144031

    申请日：2001-05-14

    Applicant: QUALCOMM INC

    Inventor： JACOBS PAUL E ,  GARDNER WILLIAM R ,  LEE CHONG U ,  GILHOUSEN KLEIN S ,  LAM S KATHERINE ,  TSAI MING-CHANG

    IPC: G10L19/00 ,  G10L20060101 ,  G10L11/02 ,  G10L19/02 ,  G10L19/04 ,  G10L19/06 ,  G10L19/12 ,  G10L19/14 ,  G10L21/02 ,  G10L21/04 ,  G10L25/93 ,  H03M7/30 ,  H03M7/36 ,  H04B1/66 ,  H04J3/16 ,  H04L1/00

    Abstract: PROBLEM TO BE SOLVED: To provide a new improved method and system for compressing speech by using a variable speed vocoding technique. SOLUTION: A device and method for executing speech signal compression by variable speed coding of a frame of a digitized speech sample (10) are provided. The speech activity level for each frame of a digitized speech sample is decided, and output data packet speed is selected from a pair of speed on the basis of the level at which the frame speech activity is decided. The lowest speed of the speed pair correspond to the lowest level speech activity detected as the background noise in the speech or a pause or the like, on the other hand, the highest speed corresponds to the highest level speech activity detected as active utterance or the like. Thereafter, each frame is coded according to a coding format preliminarily specified to the selected speed, and each speed has a corresponding number of bits for expressing the coding frame. A data packet is given to each coding frame having each output data packet of a bit speed corresponding to the selected speed.

    METHOD AND DEVICE FOR ENCODE OR DECODE
    5.
    发明专利
    METHOD AND DEVICE FOR ENCODE OR DECODE 审中-公开

    公开(公告)号：JP2004004897A

    公开(公告)日：2004-01-08

    申请号：JP2003172114

    申请日：2003-06-17

    Applicant: QUALCOMM INC

    Inventor： JACOBS PAUL E ,  GARDNER WILLIAM R ,  LEE CHONG U ,  GILHOUSEN KLEIN S ,  LAM S KATHERINE ,  TSAI MING-CHANG

    IPC: G10L19/00 ,  G10L20060101 ,  G10L11/02 ,  G10L19/02 ,  G10L19/04 ,  G10L19/06 ,  G10L19/12 ,  G10L19/14 ,  G10L21/02 ,  G10L21/04 ,  G10L25/93 ,  H03M7/30 ,  H03M7/36 ,  H04B1/66 ,  H04J3/16 ,  H04L1/00

    Abstract: PROBLEM TO BE SOLVED: To provide new improved method and system which compress speech by using variable speed vocoding technology. SOLUTION: The device and method perform compression of a speech signal by the variable speed encoding of a frame of a digitized speech sample (10). Levels of speech activities for each frame of the digitized speech sample are determined and output data packet speed is selected from one set of speed based on the determined levels of the frame speech activities. The lowest speed of the set of speed corresponds to a speech activity at the minimum detected level such as background noise or pause in the speech and on the other hand, the highest speed corresponds to a speech activity at the maximum detected level such as active utterance. After that, each frame is encoded to the selected speed according to a predetermined encoding format, in which each speed has the corresponding number of bits indicating the encoded frame. Data packets are provided to each encoded frame having each output data packet at bit rate corresponding to the selected speed. COPYRIGHT: (C)2004,JPO

    Method and apparatus using multi-carrier forward link in wireless communication system
    7.
    发明专利
    Method and apparatus using multi-carrier forward link in wireless communication system 有权
    在无线通信系统中使用多载波前向链路的方法和装置

    公开(公告)号：JP2011030264A

    公开(公告)日：2011-02-10

    申请号：JP2010224003

    申请日：2010-10-01

    Applicant: Qualcomm Inc ,  クゥアルコム・インコーポレイテッドQualcomm Incorporated

    Inventor： GARDNER WILLIAM R ,  TIEDEMANN EDWARD G JR

    IPC: H04J1/00 ,  H04W28/06 ,  H04B1/707 ,  H04B7/26 ,  H04J3/00 ,  H04J13/18 ,  H04W28/18 ,  H04W92/10

    CPC classification number: H04W28/18 ,  H04B1/707 ,  H04B7/2634 ,  H04W72/0453

    Abstract: PROBLEM TO BE SOLVED: To provide a method for enhancing the usage of spectrum, in a method and an apparatus using a multi-carrier forward link in a wireless communication system.
    SOLUTION: The present invention relates to a method and an apparatus that allows a telecommunication system using cdma2000 1X to easily migrate to using cdma2000 3X. Better spectrum management is regulated, the concurrent usage of a standard cdma2000 1X reverse link can be used with a cdma2000 1X time-division duplexing (TDD) reverse link, and hardware correction is regulated -as that opposed to the whole replacement- when additional service is added to an existing code division multiple access (CDMA) system.
    COPYRIGHT: (C)2011,JPO&INPIT

    Abstract translation: 要解决的问题：提供一种在无线通信系统中使用多载波正向链路的方法和装置中提高频谱使用的方法。 解决方案：本发明涉及允许使用cdma2000 1X的电信系统容易地迁移到使用cdma2000 3X的方法和装置。 更好的频谱管理受到管制，标准cdma2000 1X反向链路的并发使用可以与cdma2000 1X时分双工（TDD）反向链路一起使用，并且硬件校正被调整 - 与其他服务相反的整个替换 被添加到现有的码分多址（CDMA）系统中。 版权所有（C）2011，JPO＆INPIT

    Method and apparatus for selecting a speech encoding rate in a variable rate vocoder
    8.
    发明专利
    Method and apparatus for selecting a speech encoding rate in a variable rate vocoder 有权
    在可变速率VOCODER中选择语音编码速率的方法和装置

    公开(公告)号：JP2007304605A

    公开(公告)日：2007-11-22

    申请号：JP2007145737

    申请日：2007-05-31

    Applicant: Qualcomm Inc ,  クゥアルコム・インコーポレイテッドQualcomm Incorporated

    Inventor： DEJACO ANDREW P ,  GARDNER WILLIAM R

    IPC: G10L19/14 ,  G10L11/02 ,  G10L19/00 ,  G10L19/02 ,  G10L19/04 ,  G10L21/02 ,  H03M7/30

    CPC classification number: G10L19/0208 ,  G10L19/0204 ,  G10L19/10 ,  G10L19/22 ,  G10L19/24 ,  G10L25/78

    Abstract: PROBLEM TO BE SOLVED: To provide a method for detecting whether an input sound is in a non-sound state, when an encoding rate of a variable rate vocoder is determined.
    SOLUTION: In order to detect whether a frame of the input signal has an audio signal or silence (non-sound), an index of a signal to noise ratio (SNR) of the input signal is determined. A first scaling factor and a second scaling factor are selected or calculated by using the index of the SNR, and a threshold in a low frequency band and the threshold in a high frequency band are calculated by using the first and second scaling factors.
    COPYRIGHT: (C)2008,JPO&INPIT

    Abstract translation: 要解决的问题：提供一种用于检测输入声音是否处于非声音状态的方法，当确定可变速率声码器的编码速率时。 解决方案：为了检测输入信号的帧是否具有音频信号或静音（非声音），确定输入信号的信噪比（SNR）的指标。 通过使用SNR的索引来选择或计算第一缩放因子和第二缩放因子，并且通过使用第一和第二缩放因子来计算低频带中的阈值和高频带中的阈值。 版权所有（C）2008，JPO＆INPIT

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