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1. 发明专利

DE69620585T2 未知
公开(公告)号：DE69620585T2
公开(公告)日：2002-11-28
申请号：DE69620585
申请日：1996-01-25
申请人： QUALCOMM INC
发明人： WEAVER A , LAM KATHERINE , JACOBS E , GARDNER R , DEJACO P , SIH C
IPC分类号： G10L11/02 , G10L19/00 , G10L19/14 , H04B7/26 , H04B14/04 , H04Q11/04 , H04W88/18 , H04Q7/24
摘要： When one vocoding system is coupled to another vocoding system, a tandem arrangement results. The tandem configuration results in voice quality degradation as speech is encoded and decoded, then encoded and decoded again. One reason for the degradation is that postfiltering performed at the output of the speech decoding process introduces distortions in the spectral content of the reconstructed speech as compared to the original speech. The present invention prevents the degradation due to the use of postfilters by modifying the postfiltering within the vocoders where a tandem configuration exists. A detection code is embedded within the data signal to indicate the existence of a tandem configuration. If the detection code is received at a vocoder, modified vocoding is established within the vocoders to prevent the degradation due to the postfiltering.

2. 发明专利

DE69620585D1 未知
公开(公告)号：DE69620585D1
公开(公告)日：2002-05-16
申请号：DE69620585
申请日：1996-01-25
申请人： QUALCOMM INC
发明人： WEAVER A , LAM KATHERINE , JACOBS E , GARDNER R , DEJACO P , SIH C
IPC分类号： G10L11/02 , G10L19/00 , G10L19/14 , H04B7/26 , H04B14/04 , H04Q11/04 , H04W88/18 , H04Q7/24
摘要： When one vocoding system is coupled to another vocoding system, a tandem arrangement results. The tandem configuration results in voice quality degradation as speech is encoded and decoded, then encoded and decoded again. One reason for the degradation is that postfiltering performed at the output of the speech decoding process introduces distortions in the spectral content of the reconstructed speech as compared to the original speech. The present invention prevents the degradation due to the use of postfilters by modifying the postfiltering within the vocoders where a tandem configuration exists. A detection code is embedded within the data signal to indicate the existence of a tandem configuration. If the detection code is received at a vocoder, modified vocoding is established within the vocoders to prevent the degradation due to the postfiltering.

3. 发明专利

DE60209256T2 未知
公开(公告)号：DE60209256T2
公开(公告)日：2006-11-23
申请号：DE60209256
申请日：2002-11-01
申请人： QUALCOMM INC
发明人： WILBORN B , GARDNER R , MOLLENKOPF M
IPC分类号： H04B7/26 , H04B17/00 , H04B1/00 , H04B7/005
摘要： A method, apparatus and computer program product for predicting received signal strength in a wireless mobile receiver. The invention bounds the range of allowed values for a next predicted signal. The bounded prediction compensates for erroneous values from multipath fading. The predicted signal strength is used to set the mobile receiver amplifier gain to the desired level.

4. 发明专利

DE60209256D1 未知
公开(公告)号：DE60209256D1
公开(公告)日：2006-04-20
申请号：DE60209256
申请日：2002-11-01
申请人： QUALCOMM INC
发明人： WILBORN B , GARDNER R , MOLLENKOPF M
IPC分类号： H04B7/26 , H04B17/00 , H04B1/00 , H04B7/005
摘要： A method, apparatus and computer program product for predicting received signal strength in a wireless mobile receiver. The invention bounds the range of allowed values for a next predicted signal. The bounded prediction compensates for erroneous values from multipath fading. The predicted signal strength is used to set the mobile receiver amplifier gain to the desired level.

5. 发明专利

DE69621620T2 未知
公开(公告)号：DE69621620T2
公开(公告)日：2003-02-06
申请号：DE69621620
申请日：1996-08-01
申请人： QUALCOMM INC
发明人： GARDNER R , MANJUNATH SHARATH , MONTA PETER
IPC分类号： G10L19/02 , G10L19/00 , G10L19/04 , G10L19/06 , H03M7/30 , H03M7/36 , H04B14/04
摘要： A novel and improved method and apparatus for encoding line predictive coding (LPC) data in a speech compression system using line spectral square root values is disclosed. A novel and computationally efficient procedure for determining the set of quantization sensitivities for the line spectral square root values is disclosed, which results in a computationally efficient error measure for use in vector quantization of the line spectral square root values. A novel method of weighting the quantization error is disclosed, which accumulates the quantization error in each line spectral square root value and weights that error by the sensitivity of that line spectral square root value.\!

6. 发明专利

DE69429270D1 未知
公开(公告)号：DE69429270D1
公开(公告)日：2002-01-10
申请号：DE69429270
申请日：1994-09-08
申请人： QUALCOMM INC
发明人： GARDNER R , JACOBS E , PADOVANI ROBERTO , ZIV A , LAM KATHERINE , DEJACO P
IPC分类号： H04B7/26 , H04L1/00 , H04L12/00 , H04L12/56 , H04Q11/04 , H04W24/00 , H04W28/22 , H04L1/12 , H04Q7/38
摘要： A method and apparatus are described for controlling the data rates for communications to and from a base station and a plurality of remote users. The usage of the communications resource whether the forward link resource (from base station to remote users) or reverse link resource (from remote users to base station) is measured. The measured usage value is compared against at least one predetermined threshold value and the data rates of communications or a subset of communications on said communications resource is modified in accordance with said comparisons.

7. 发明专利

DE69526926T2 未知
公开(公告)号：DE69526926T2
公开(公告)日：2003-01-02
申请号：DE69526926
申请日：1995-02-01
申请人： QUALCOMM INC
发明人： GARDNER R
IPC分类号： G10L19/08 , G10L19/00 , G10L19/04 , G10L19/12
摘要： A novel and improved apparatus for encoding a signal which is bursty in nature. In a code excited linear prediction algorithm, short term redundancies and long term redundancies are removed from digitally sampled speech, and the residual signal which is bursty in nature must be encoded. The residual signal is encoded using three parameters a burst shape index corresponding to a burst shape in a codebook of burst shapes, a burst gain, and a burst location. Together the three parameters specify a waveform to match the residual signal. Further disclosed is a closed loop exhaustive search method by which to find the best match to the residual waveform and a partially open loop method wherein the burst location is determined by an open loop analysis of the residual waveform, and the burst shape and gain parameters are determined in a closed loop fashion. Also disclosed are methods by which a burst vector codebook may be provided which may result in reduced computational complexity in the search algorithms including a recursive burst codebook and a codebook structured in such a way that members of the codebook are linear combinations of other members of the codebook.

8. 发明专利

DE69429270T2 未知
公开(公告)号：DE69429270T2
公开(公告)日：2002-07-25
申请号：DE69429270
申请日：1994-09-08
申请人： QUALCOMM INC
发明人： GARDNER R , JACOBS E , PADOVANI ROBERTO , ZIV A , LAM KATHERINE , DEJACO P
IPC分类号： H04B7/26 , H04L1/00 , H04L12/00 , H04L12/56 , H04Q11/04 , H04W24/00 , H04W28/22 , H04L1/12 , H04Q7/38
摘要： A method and apparatus are described for controlling the data rates for communications to and from a base station and a plurality of remote users. The usage of the communications resource whether the forward link resource (from base station to remote users) or reverse link resource (from remote users to base station) is measured. The measured usage value is compared against at least one predetermined threshold value and the data rates of communications or a subset of communications on said communications resource is modified in accordance with said comparisons.

9. 发明专利

DE69232202T2 未知
公开(公告)号：DE69232202T2
公开(公告)日：2002-07-25
申请号：DE69232202
申请日：1992-06-03
申请人： QUALCOMM INC
发明人： JACOBS E , GARDNER R , LEE U , GILHOUSEN S , LAM KATHERINE , TSAI MING-CHANG
IPC分类号： 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
摘要： An apparatus for masking frame errors comprising memory means for storing at least one previous frame of data and for providing said at least one previous frame of data in response to a frame error signal; and masking means for receiving said frame error signal and for generating a masking signal in accordance with at least one previous frame of data and a predetermined error masking format.

10. 发明专利

DE69232202D1 未知
公开(公告)号：DE69232202D1
公开(公告)日：2001-12-20
申请号：DE69232202
申请日：1992-06-03
申请人： QUALCOMM INC
发明人： JACOBS E , GARDNER R , LEE U , GILHOUSEN S , LAM KATHERINE , TSAI MING-CHANG
IPC分类号： 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
摘要： An apparatus for masking frame errors comprising memory means for storing at least one previous frame of data and for providing said at least one previous frame of data in response to a frame error signal; and masking means for receiving said frame error signal and for generating a masking signal in accordance with at least one previous frame of data and a predetermined error masking format.

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