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公开(公告)号：MXPA01002487A
公开(公告)日：2002-04-24
申请号：MXPA01002487
申请日：1999-09-03
Applicant: QUALCOMM INC
Inventor： GARDNER WILLIAM
IPC: G01S19/30 , G01S1/00 , G01S5/00 , G01S5/14 , G01S19/23 , G01S19/24 , G01S19/25 , G01S19/29 , G01S19/37 , H04Q7/34 , H04Q7/38 , G01S1/04
Abstract: La presente invencion es un novedoso y mejorado metodo y aparato para realizar la localizacion de posicion en un sistema de comunicacion inalambrica. Una modalidad comprende un metodo para realizar la localizacion de posicion en un sistema de comunicacion inalambrica usando un conjunto de senales transmitidas desde un conjunto de satelites, que incluye los pasos de recibir muestras de senal, rotar un codigo de adquisicion por una primera cantidad de rotacion que produce un codigo de adquisicion rotado, agrupar las muestras de senal usando el codigo de adquisicion rotado produciendo datos reagrupados, acumular los datos reagrupados durante un primera duracion produciendo datos parcialmente acumulados, rotar los datos parcialmente acumulados por una segunda cantidad de rotacion produciendo datos rotados y acumular los datos rotados.
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公开(公告)号：BR9913546A
公开(公告)日：2002-04-23
申请号：BR9913546
申请日：1999-09-03
Applicant: QUALCOMM INC
Inventor： GARDNER WILLIAM , AGRAWAL AVNEESH , SIH GILBERT C , ZOU QUIZHEN , KANG INYUP
IPC: G01S19/30 , G01S1/00 , G01S5/00 , G01S5/14 , G01S19/23 , G01S19/24 , G01S19/25 , G01S19/29 , G01S19/37 , H04Q7/34 , H04Q7/38 , G01S1/04
Abstract: The present invention is a novel and improved method and apparatus for performing position location in wireless communications system. One embodiment comprises a method for performing position location in a wireless communication system using a set of signals transmitted from a set of satellites including the steps of receiving signal samples, rotating an acquisition code by a first rotation amount yielding a rotated acquisition code, despreading said signal samples using rotated acquisition code yielding despread data, accumulating said despread data over a first duration yielding partially accumulated data, rotating said partially accumulated data by a second rotation amount yielding rotated data and accumulating said rotated data.
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公开(公告)号：DE69324906D1
公开(公告)日：1999-06-17
申请号：DE69324906
申请日：1993-01-26
Applicant: QUALCOMM INC
Inventor： GARDNER WILLIAM , JACOBS PAUL
Abstract: A method and system by which parameter data representative of vocoded speech are organized into a data packet for transmission so as to reduce the impact of transmission channel induced errors on the data packet. A data packet is constructed with certain most perceptually significant bits of parameter data at the beginning of the data packet. Following in the data packet are lesser perceptually significant bits of the same parameter data. Other parameter data then follows in the data packet. Interleaved in the data packet following the most perceptually significant bits at the beginning of the data packet are most perceptually significant bits of other parameter data. A parity check code is computed from the most perceptually significant bits in the data packet and also interleaved in the data packet following the most perceptually significant bits at the beginning of the data packet.
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公开(公告)号：ES2321147T3
公开(公告)日：2009-06-02
申请号：ES99967507
申请日：1999-12-21
Applicant: QUALCOMM INC
Inventor： MANJUNATH SHARATH , GARDNER WILLIAM
Abstract: Un procedimiento de codificación de tasa de transmisión variable de una señal de habla, que comprende las etapas de (a) clasificar (304) la señal de habla como o bien activa o bien inactiva; y (b) clasificar (308) dicha habla activa en una de una pluralidad de tipos de habla activa, caracterizado por: (c) seleccionar (310) un modo de codificación de una pluralidad de modos de codificación basándose en si la señal de habla es activa o inactiva, y si es activa, basándose además en dicho tipo de habla activa, en la que dicha pluralidad de modos de codificación comprende un modo de codificación por predicción lineal excitada por código, CELP, un modo de codificación por periodo de altura de tono prototipo, PPP, y un modo de codificación por predicción lineal excitada por ruido, NELP; y (d) codificar (312) la señal de habla según dicho modo de codificación seleccionado, formando una señal de habla codificada.
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公开(公告)号：DE69940477D1
公开(公告)日：2009-04-09
申请号：DE69940477
申请日：1999-12-21
Applicant: QUALCOMM INC
Inventor： MANJUNATH SHARATH , GARDNER WILLIAM
Abstract: A method and apparatus for the variable rate coding of a speech signal. An input speech signal is classified and an appropriate coding mode is selected based on this classification. For each classification, the coding mode that achieves the lowest bit rate with an acceptable quality of speech reproduction is selected. Low average bit rates arc achieved by only employing high fidelity modes (i.e., high bit rate, broadly applicable to different types of speech) during portions of the speech where this fidelity is required for acceptable output. Lower bit rate modes are used during portions of speech where these modes produce acceptable output. Input speech signal is classified into active and inactive regions. Active regions are further classified into voiced, unvoiced, and transient regions. Various coding modes are applied to active speech, depending upon the required level of fidelity. Coding modes may be utilized according to the strengths and weaknesses of each particular mode. The apparatus dynamically switches between these modes as the properties of the speech signal vary with time. And where appropriate, regions of speech arc modeled as pseudo-random noise, resulting in a significantly lower bit rate. This coding is used in a dynamic fashion whenever unvoiced speech or background noise is detected.
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Patent Agency Ranking
公开(公告)号：AT360337T
公开(公告)日：2007-05-15
申请号：AT99935688
申请日：1999-07-19
Applicant: QUALCOMM INC
Inventor： NEVO RON , VAKULENKO MICHAEL , BRYGER BOAZ E , GARDNER WILLIAM , CASPI DROR , MENDELSON ASSAF , KOLOR SERGIO , NIZRI SHLOMO , KESSLER ILAN , LEVY ATAI , SHIDELMAN DROR , RIMONI YORAM
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公开(公告)号：DE69928288T2
公开(公告)日：2006-08-10
申请号：DE69928288
申请日：1999-12-21
Applicant: QUALCOMM INC
Inventor： MANJUNATH SHARATH , GARDNER WILLIAM
Abstract: A method and apparatus for coding a quasi-periodic speech signal. The speech signal is represented by a residual signal generated by filtering the speech signal with a Linear Predictive Coding (LPC) analysis filter. The residual signal is encoded by extracting a prototype period from a current frame of the residual signal. A first set of parameters is calculated which describes how to modify a previous prototype period to approximate the current prototype period. One or more codevectors are selected which, when summed, approximate the error between the current prototype period and the modified previous prototype. A multi-stage codebook is used to encode this error signal. A second set of parameters describe these selected codevectors. The decoder synthesizes an output speech signal by reconstructing a current prototype period based on the first and second set of parameters, and the previous reconstructed prototype period. The residual signal is then interpolated over the region between the current and previous reconstructed prototype periods. The decoder synthesizes output speech based on the interpolated residual signal.
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公开(公告)号：ZA200206509B
公开(公告)日：2003-12-19
申请号：ZA200206509
申请日：2002-08-14
Applicant: QUALCOMM INC
Inventor： GRILLI FRANCESCO , GARDNER WILLIAM , JAIN AVINASH
Abstract: A mobile wireless telecommunications system includes base stations of a first type operating according to a first air interface, and base stations of a second type operating according to a second air interface. Methods and apparatus are provided for handing over a mobile station in the system from a first base station, which is of the first type, to a second base station, which is of the second type. A communications link is established over the first air interface between the mobile station and the first base station. Data are received from the mobile station responsive to a signal received by the mobile station over the second air interface from the second base station, substantially without breaking the communications link with the first base station. The mobile station is handed over from the first to the second base station responsive to the data received therefrom. In particular, a method of conducting intersystem handover from a multicarrier system to a direct spread system is provided. Timing synchronization is also advantageously made available through the mobile station.
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公开(公告)号：CZ20023004A3
公开(公告)日：2003-03-12
申请号：CZ20023004
申请日：2001-03-07
Applicant: QUALCOMM INC
Inventor： GRILLI FRANCESCO , JAIN AVINASH , GARDNER WILLIAM
Abstract: A mobile wireless telecommunications system includes base stations of a first type operating according to a first air interface, and base stations of a second type operating according to a second air interface. Methods and apparatus are provided for handing over a mobile station in the system from a first base station, which is of the first type, to a second base station, which is of the second type. A communications link is established over the first air interface between the mobile station and the first base station. Data are received from the mobile station responsive to a signal received by the mobile station over the second air interface from the second base station, substantially without breaking the communications link with the first base station. The mobile station is handed over from the first to the second base station responsive to the data received therefrom. In particular, a method of conducting intersystem handover from a multicarrier system to a direct spread system is provided. Timing synchronization is also advantageously made available through the mobile station.
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公开(公告)号：NO20024257A
公开(公告)日：2002-10-30
申请号：NO20024257
申请日：2002-09-06
Applicant: QUALCOMM INC
Inventor： GRILLI FRANCESCO , JAIN AVINASH , GARDNER WILLIAM
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