Patents by Inventor Andrew P. DeJaco
Andrew P. DeJaco has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8660840Abstract: A method and apparatus for predictively quantizing voiced speech includes a parameter generator and a quantizer. The parameter generator is configured to extract parameters from frames of predictive speech such as voiced speech, and to transform the extracted information to a frequency-domain representation. The quantizer is configured to subtract a weighted sum of the parameters for previous frames from the parameter for the current frame. The quantizer is configured to quantize the difference value. A prototype extractor may be added to first extract a pitch period prototype to be processed by the parameter generator.Type: GrantFiled: August 12, 2008Date of Patent: February 25, 2014Assignee: QUALCOMM IncorporatedInventors: Arasanipalai K. Ananthapadmanabhan, Sarath Manjunath, Pengjun Huang, Eddie-Lun Tik Choy, Andrew P. Dejaco
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Patent number: 8358617Abstract: Wideband speech signals must be converted to narrowband speech signals if the transmission medium or the destination terminal is constructed with narrowband constraints. A typical wideband-to-narrowband conversion method is the elimination of frequencies above 3400 Hz using a low pass filter and a down sampler. However, this method produces a muffled speech sound since the resulting narrowband signal has a flat frequency response. Methods and apparatus are presented herein to enhance the acoustic quality of a wideband-to-narrowband converted signal. A bandwidth switching filter is used to emphasize a mid-range frequency portion of the wideband signal so that the resulting narrowband signal has a non-flat frequency spectrum.Type: GrantFiled: July 10, 2009Date of Patent: January 22, 2013Assignee: QUALCOMM IncorporatedInventors: Khaled H. El-Maleh, Arasanipalai K. Ananthapadmanabhan, Andrew P. DeJaco
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Patent number: 8243695Abstract: A system and method for detection of rate determination algorithm errors in variable rate communications system receivers. The disclosed embodiments prevent rate determination algorithm errors from causing audible artifacts such as screeches or beeps. The disclosed system and method detects frames with incorrectly determined data rates and performs frame erasure processing and/or memory state clean up to prevent propagation of distortion across multiple frames. Frames with incorrectly determined data rates are detected by checking illegal rate transitions, reserved bits, validating unused filter type bit combinations and analyzing relationships between fixed code-book gains and linear prediction coefficient gains.Type: GrantFiled: August 7, 2009Date of Patent: August 14, 2012Assignee: QUALCOMM IncorporatedInventors: Khaled H. El-Maleh, Eddie-Lun Tik Choy, Arasanipalai K. Ananthapadmanabhan, Andrew P. DeJaco, Pengjun Huang
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Method and apparatus for determining the transmission data rate in a multi-user communication system
Patent number: 8041302Abstract: 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.Type: GrantFiled: October 6, 2006Date of Patent: October 18, 2011Assignee: QUALCOMM IncorporatedInventors: William R. Gardner, Paul E. Jacobs, Roberto Padovani, Noam Ziv, S. Katherine Lam, Andrew P. DeJaco -
Patent number: 7788092Abstract: A speech signal is decoded by a vocoder and the reconstructed speech samples are provided to a decoded frame check unit. The decoded frame check unit examines the energy of the reconstructed speech and compares the energy of the reconstructed speech to a range of acceptable energy values. If the energy is not within the range of energy values, a frame erasure is declared and the decoded frame is prevented from being to the speaker in the telephone. In the exemplary implementation, the speech is reconstructed by a vocoder which includes a postfilter which in turn includes automatic gain control. The automatic gain control element of a post filter includes a means for measuring the energy of the decoded speech data. This measured energy is used by the decoded frame check unit to decide whether to provide the decoded data to the user or to declare a frame erasure. This implementation reduces the amount of additional hardware necessary to implement the present invention.Type: GrantFiled: January 12, 2007Date of Patent: August 31, 2010Assignee: QUALCOMM IncorporatedInventors: Paul E. Jacobs, Andrew P. Dejaco
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Publication number: 20090281796Abstract: Wideband speech signals must be converted to narrowband speech signals if the transmission medium or the destination terminal is constructed with narrowband constraints. A typical wideband-to-narrowband conversion method is the elimination of frequencies above 3400 Hz using a low pass filter and a down sampler. However, this method produces a muffled speech sound since the resulting narrowband signal has a flat frequency response. Methods and apparatus are presented herein to enhance the acoustic quality of a wideband-to-narrowband converted signal. A bandwidth switching filter is used to emphasize a mid-range frequency portion of the wideband signal so that the resulting narrowband signal has a non-flat frequency spectrum.Type: ApplicationFiled: July 10, 2009Publication date: November 12, 2009Applicant: QUALCOMM IncorporatedInventors: Khaled H. El-Maleh, Arasanipalai K. Ananthapadmanabhan, Andrew P. Dejaco
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Patent number: 7590096Abstract: A system and method for detection of rate determination algorithm errors in variable rate communications system receivers. The disclosed embodiments prevent rate determination algorithm errors from causing audible artifacts such as screeches or beeps. The disclosed system and method detects frames with incorrectly determined data rates and performs frame erasure processing and/or memory state clean up to prevent propagation of distortion across multiple frames. Frames with incorrectly determined data rates are detected by checking illegal rate transitions, reserved bits, validating unused filter type bit combinations and analyzing relationships between fixed code-book gains and linear prediction coefficient gains.Type: GrantFiled: September 9, 2004Date of Patent: September 15, 2009Assignee: QUALCOMM IncorporatedInventors: Khaled H. El-Maleh, Eddie-Lun Tik Choy, Arasanipalai K. Ananthapadmanabhan, Andrew P. DeJaco, Pengjun Huang
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Patent number: 7577563Abstract: Wideband speech signals must be converted to narrowband speech signals if the transmission medium or the destination terminal is constructed with narrowband constraints. A typical wideband-to-narrowband conversion method is the elimination of frequencies above 3400 Hz using a low pass filter and a down sampler. However, this method produces a muffled speech sound since the resulting narrowband signal has a flat frequency response. Methods and apparatus are presented herein to enhance the acoustic quality of a wideband-to-narrowband converted signal. A bandwidth switching filter is used to emphasize a mid-range frequency portion of the wideband signal so that the resulting narrowband signal has a non-flat frequency spectrum.Type: GrantFiled: September 22, 2006Date of Patent: August 18, 2009Assignee: Qualcomm IncorporatedInventors: Khaled H. El-Maleh, Arasanipalai K. Ananthapadmanabhan, Andrew P. DeJaco
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Patent number: 7483520Abstract: According to a disclosed embodiment, an incoming call from a first telephone number is received (310). A variable indicating the number of calls received from the first telephone number is incremented (312). The variable is compared to a threshold variable (316). Subsequently, the user is prompted to save the first telephone number in an address book (319) when the variable indicating the number of times an incoming call is received from the first telephone number is equal to, or greater than, the threshold variable. The first telephone number is then stored in the address book. Moreover, an apparatus can be assembled (200) to provide cellular telephone users with, for example, instructions and information via a speaker (228) and an LCD display (238). The apparatus is configured to provide instructions and information to the cellular telephone user at appropriate times, thereby increasing the cellular telephone's usefulness.Type: GrantFiled: August 6, 2001Date of Patent: January 27, 2009Assignee: Qualcomm IncorporatedInventors: Charles Han, Richard Paul Walters, Andrew P. DeJaco
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Publication number: 20080312917Abstract: A method and apparatus for predictively quantizing voiced speech includes a parameter generator and a quantizer. The parameter generator is configured to extract parameters from frames of predictive speech such as voiced speech, and to transform the extracted information to a frequency-domain representation. The quantizer is configured to subtract a weighted sum of the parameters for previous frames from the parameter for the current frame. The quantizer is configured to quantize the difference value. A prototype extractor may be added to first extract a pitch period prototype to be processed by the parameter generator.Type: ApplicationFiled: August 12, 2008Publication date: December 18, 2008Applicant: QUALCOMM IncorporatedInventors: Arasanipalai K. Ananthapadmanabhan, Sharath Manjunath, Pengjun Huang, Eddie-Lun Tik Choy, Andrew P. Dejaco
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Publication number: 20080233928Abstract: A method of instructing a user how to use a wireless communication device is disclosed and may include determining whether a feature on the wireless communication device has been utilized. When it is determined that the feature has not been utilized, the method may include notifying a presence of the feature, providing information associated with the feature, and prompting the user to use the feature. The information associated with the feature is configured to teach the user how the feature may be executed, the availability of additional features, how to utilize the feature better, or a combination thereof. Further, the feature is a number saving feature, a speed dialing feature, a voice dialing feature, or a combination thereof.Type: ApplicationFiled: June 6, 2008Publication date: September 25, 2008Applicant: QUALCOMM IncorporatedInventors: Charles HAN, Richard Paul Walters, Andrew P. DeJaco
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Patent number: 7426466Abstract: A method and apparatus for predictively quantizing voiced speech includes a parameter generator and a quantizer. The parameter generator is configured to extract parameters from frames of predictive speech such as voiced speech, and to transform the extracted information to a frequency-domain representation. The quantizer is configured to subtract a weighted sum of the parameters for previous frames from the parameter for the current frame. The quantizer is configured to quantize the difference value. A prototype extractor may be added to first extract a pitch period prototype to be processed by the parameter generator.Type: GrantFiled: July 22, 2004Date of Patent: September 16, 2008Assignee: QUALCOMM IncorporatedInventors: Arasanipalai K. Ananthapadmanabhan, Sharath Manjunath, Pengjun Huang, Eddie-Lun Tik Choy, Andrew P. DeJaco
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Patent number: 7289461Abstract: A call setup procedure is presented to permit vocoder bypass, which will allow the transmission of wideband speech packets between wideband terminals over narrowband transmission constraints. In addition, methods and apparatus are presented that allow the conversion between a wideband tandem-free operation, a narrowband tandem-free operation, and a standard tandem operation.Type: GrantFiled: March 15, 2001Date of Patent: October 30, 2007Assignee: QUALCOMM IncorporatedInventors: Andrew P. DeJaco, Khaled El-Maleh
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Patent number: 7184954Abstract: A speech signal is decoded by a vocoder and the reconstructed speech samples are provided to a decoded frame check unit. The decoded frame check unit examines the energy of the reconstructed speech and compares the energy of the reconstructed speech to a range of acceptable energy values. If the energy is not within the range of energy values, a frame erasure is declared and the decoded frame is prevented from being to the speaker in the telephone. In the exemplary implementation, the speech is reconstructed by a vocoder which includes a postfilter which in turn includes automatic gain control. The automatic gain control element of a post filter includes a means for measuring the energy of the decoded speech data. This measured energy is used by the decoded frame check unit to decide whether to provide the decoded data to the user or to declare a frame erasure. This implementation reduces the amount of additional hardware necessary to implement the present invention.Type: GrantFiled: March 1, 1999Date of Patent: February 27, 2007Assignee: Qualcomm Inc.Inventors: Paul E. Jacobs, Andrew P. Dejaco
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Method and apparatus for determining the transmission data rate in a multi-user communication system
Patent number: 7146174Abstract: 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.Type: GrantFiled: December 20, 1995Date of Patent: December 5, 2006Assignee: Qualcomm IncorporatedInventors: William R. Gardner, Paul E. Jacobs, Roberto Padovani, Noam Ziv, S. Katherine Lam, Andrew P. DeJaco -
Patent number: 7113522Abstract: Wideband speech signals must be converted to narrowband speech signals if the transmission medium or the destination terminal is constructed with narrowband constraints. A typical wideband-to-narrowband conversion method is the elimination of frequencies above 3400 Hz using a low pass filter and a down sampler. However, this method produces a muffled speech sound since the resulting narrowband signal has a flat frequency response. Methods and apparatus are presented herein to enhance the acoustic quality of a wideband-to-narrowband converted signal. A bandwidth switching filter is used to emphasize a mid-range frequency portion of the wideband signal so that the resulting narrowband signal has a non-flat frequency spectrum.Type: GrantFiled: January 24, 2001Date of Patent: September 26, 2006Assignee: QUALCOMM, IncorporatedInventors: Khaled H. El-Maleh, Arasanipalai K. Ananthapadmanabhan, Andrew P. DeJaco
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Patent number: 7061934Abstract: The disclosed embodiments provide a method and apparatus for interoperability between CTX and DTX communications systems during transmissions of silence or background noise [FIG. 2]. Continuous eighth rate encoded noise frames are translated to discontinuous SID frames for transmission to DTX systems (402–410). Discontinuous SID frames are translated to continuous eighth rate encoded noise frames for decoding by a CTX system (602–606).Type: GrantFiled: July 17, 2003Date of Patent: June 13, 2006Assignee: Qualcomm IncorporatedInventors: Khaled El-Maleh, Arasanipalai K. Ananthapadmanabhan, Andrew P. DeJaco
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Patent number: 6950799Abstract: A speech processing system modifies various aspects of input speech according to a user-selected one of various preprogrammed voice fonts. Initially, the speech converter receives a formants signal representing an input speech signal and a pitch signal representing the input signal's fundamental frequency. One or both of the following may also be received: a voicing signal comprising an indication of whether the input speech signal is voiced, unvoiced, or mixed, and/or a gain signal representing the input speech signal's energy. The speech converter also receives user selection of one of multiple preprogrammed voice fonts, each specifying a manner of modifying one or more of the received signals (i.e., formants, voicing, pitch, gain). The speech converter modifies at least one of the formants, voicing, pitch, and/or gain signals as specified by the selected voice font.Type: GrantFiled: February 19, 2002Date of Patent: September 27, 2005Assignee: Qualcomm Inc.Inventors: Ning Bi, Andrew P. DeJaco
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Patent number: 6836758Abstract: A method and system for speech recognition combines different types of engines in order to recognize user-defined digits and control words, predefined digits and control words, and nametags. Speaker-independent engines are combined with speaker-dependent engines. A Hidden Markov Model (HMM) engine is combined with Dynamic Time Warping (DTW) engines.Type: GrantFiled: January 9, 2001Date of Patent: December 28, 2004Assignee: Qualcomm IncorporatedInventors: Ning Bi, Andrew P. DeJaco, Harinath Garudadri, Chienchung Chang, William Yee-Ming Huang, Narendranath Malayath, Suhail Jalil, David Puig Oses, Yingyong Qi
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Publication number: 20040260542Abstract: A method and apparatus for predictively quantizing voiced speech includes a parameter generator and a quantizer. The parameter generator is configured to extract parameters from frames of predictive speech such as voiced speech, and to transform the extracted information to a frequency-domain representation. The quantizer is configured to subtract a weighted sum of the parameters for previous frames from the parameter for the current frame. The quantizer is configured to quantize the difference value. A prototype extractor may be added to first extract a pitch period prototype to be processed by the parameter generator.Type: ApplicationFiled: July 22, 2004Publication date: December 23, 2004Inventors: Arasanipalai K. Ananthapadmanabhan, Sharath Manjunath, Pengjun Huang, Eddie-Lun Tik Choy, Andrew P. DeJaco