-
公开(公告)号：AT428166T
公开(公告)日：2009-04-15
申请号：AT02702129
申请日：2002-01-30
Applicant: QUALCOMM INC
Inventor： EL-MALEH KHALED , ANANTHAPADMANABHAN ARASANIPALAI , DEJACO ANDREW
IPC: G10L19/012 , G10L13/00 , H04B14/04 , H04J3/00 , H04J13/00
Abstract: The disclosed embodiments provide a method and apparatus for interoperability between CTX and DTX communications systems during transmissions of silence or background noise. Continuous eight rate encoded noise frames are translated to discontinuous SID frames for transmission to DTX systems (402-410). Discontinuous SID frames are translated to continuous eight rate encoded noise frames for decoding by a CTX system (602-606). Applications of CTX to DTX interoperability comprise CDMA and GSM interoperability (narrowband voice transmission systems), CDMA next generation vocoder (The Selectable Mode Vocoder) interoperability with the new ITU-T 4 kbps vocoder operating in DTX-mode for Voice Over IP applications, future voice transmission systems that have a common speech encoder/decoder but operate in differing CTX or DTX modes during speech non-activity, and CDMA wideband voice transmission system interoperability with other wideband voice transmission systems with common wideband vocoders but with different modes of operation (DTX or CTX) during voice non-activity).
-
公开(公告)号：ID29151A
公开(公告)日：2001-08-02
申请号：ID20010341
申请日：1999-07-12
Applicant: QUALCOMM INC
Inventor： LEUNG NIKOLAI K N , DEJACO ANDREW , JOHN JOHNNY
Abstract: A method and apparatus to facilitate service negotiation by a digital telecommunications system that allows a low activity communication to be transmitted by the system over vocoded channels. In one embodiment, once the telecommunication system is noticed that a low activity signal needs to be transmitted, each telecommunication system vocoder involved in the transmission automatically locks into full rate, and where applicable, adjusts the transmission power to reduce frame error rate. Further, the telecommunications system may include any number of wireless links. The invention includes a noticing apparatus coupled to a sensor that receives a low activity communication device attachment and notices the digital telecommunications system that a low activity communication is being initiated or discontinued.
-
公开(公告)号：NO20010205L
公开(公告)日：2001-03-09
申请号：NO20010205
申请日：2001-01-12
Applicant: QUALCOMM INC
Inventor： LEUNG NIKOLAI K N , JOHN JOHNNY , DEJACO ANDREW
Abstract: A method and apparatus to facilitate service negotiation by a digital telecommunications system that allows a low activity communication to be transmitted by the system over vocoded channels. In one embodiment, once the telecommunication system is noticed that a low activity signal needs to be transmitted, each telecommunication system vocoder involved in the transmission automatically locks into full rate, and where applicable, adjusts the transmission power to reduce frame error rate. Further, the telecommunications system may include any number of wireless links. The invention includes a noticing apparatus coupled to a sensor that receives a low activity communication device attachment and notices the digital telecommunications system that a low activity communication is being initiated or discontinued.
-
公开(公告)号：ES2408220T3
公开(公告)日：2013-06-19
申请号：ES02705910
申请日：2002-01-23
Applicant: QUALCOMM INC
Inventor： EL-MALEH KHALED , ANANTHAPADMANABHAN ARASANIPALAI , DEJACO ANDREW
Abstract: Un aparato para convertir una señal de voz de banda ancha en una señal de voz de banda estrecha, quecomprende: un elemento de control para determinar si hay que convertir la señal de voz de banda ancha en la señal devoz de banda estrecha; un conmutador (42) acoplado al elemento de control, en el que el elemento de control activa el conmutador(42) si el elemento de control determina que ha de convertirse la señal de voz de banda ancha; un filtro (46) de conmutación de banda ancha para recibir la señal de voz de banda ancha si el conmutador(42) está activado, en el que el filtro (46) de conmutación de banda ancha acentúa una porción del espectrode frecuencias de la señal de voz de banda ancha para producir una señal de salida con una respuesta noplana de frecuencias, y atenuando adicionalmente el filtro (46) de conmutación de banda ancha una porciónde alta frecuencia de la señal de voz de banda ancha; y un submuestreador (48) para diezmar la señal de salida del filtro de conmutación de banda ancha.
-
公开(公告)号：AT415793T
公开(公告)日：2008-12-15
申请号：AT01964052
申请日：2001-08-14
Applicant: QUALCOMM INC
Inventor： ANANTHPADMANABHAN ANANTH , DEJACO ANDREW
-
Patent Agency Ranking
公开(公告)号：AT367011T
公开(公告)日：2007-08-15
申请号：AT00921542
申请日：2000-03-29
Applicant: QUALCOMM INC
Inventor： GUPTA SAMIR , MAURO ANTHONY , DEJACO ANDREW
-
公开(公告)号：BR9912052A
公开(公告)日：2001-09-25
申请号：BR9912052
申请日：1999-07-12
Applicant: QUALCOMM INC
Inventor： LEUNG NIKOLAI K N , DEJACO ANDREW , JOHN JOHNNY K
Abstract: A method and apparatus to facilitate service negotiation by a digital telecommunications system that allows a low activity communication to be transmitted by the system over vocoded channels. In one embodiment, once the telecommunication system is noticed that a low activity signal needs to be transmitted, each telecommunication system vocoder involved in the transmission automatically locks into full rate, and where applicable, adjusts the transmission power to reduce frame error rate. Further, the telecommunications system may include any number of wireless links. The invention includes a noticing apparatus coupled to a sensor that receives a low activity communication device attachment and notices the digital telecommunications system that a low activity communication is being initiated or discontinued.
-
公开(公告)号：AT420432T
公开(公告)日：2009-01-15
申请号：AT07105323
申请日：2001-04-20
Applicant: QUALCOMM INC
Inventor： ANANTHAPADMANABHAN ARASANIPALAI , MANJUNATH SHARATH , HUANG PENGJUN , CHOY EDDI-LUN , DEJACO ANDREW
Abstract: 13. A computer-readable medium comprising instructions that upon execution in a processor cause the processor to perform the methods as recited in any of claims 5 to 8.
-
公开(公告)号：AT369601T
公开(公告)日：2007-08-15
申请号：AT02702158
申请日：2002-02-06
Applicant: QUALCOMM INC
Inventor： CHOY EDDIE-LUN , ANANTHAPADMANABHAN ARASANIPALA , DEJACO ANDREW
Abstract: A method and apparatus for enhancing coding efficiency by reducing illegal or other undesirable packet generation while encoding a signal, The probability of generating illegal or other undesirable packets while encoding a signal is reduced by first analyzing a history of the frequency of codebook values selected while quantizing speech parameters. Codebook entries are then positioned so that the index/indices that create illegal or other undesirable packets contain the least frequently used entry/entries. Positioning multiple codebooks for various parameters further reduces the probability, that an illegal or other undesirable packet will be created during signal encoding. The method and apparatus may be applied to reduce the probability of generating illegal null traffic channel data packets while encoding eight rate speech.
-
公开(公告)号：NO20010205D0
公开(公告)日：2001-01-12
申请号：NO20010205
申请日：2001-01-12
Applicant: QUALCOMM INC
Inventor： LEUNG NIKOLAI K N , JOHN JOHNNY , DEJACO ANDREW
Abstract: A method and apparatus to facilitate service negotiation by a digital telecommunications system that allows a low activity communication to be transmitted by the system over vocoded channels. In one embodiment, once the telecommunication system is noticed that a low activity signal needs to be transmitted, each telecommunication system vocoder involved in the transmission automatically locks into full rate, and where applicable, adjusts the transmission power to reduce frame error rate. Further, the telecommunications system may include any number of wireless links. The invention includes a noticing apparatus coupled to a sensor that receives a low activity communication device attachment and notices the digital telecommunications system that a low activity communication is being initiated or discontinued.
-
-
-
-
-
-
-
-
-
Search Results
22
records
(took 0.02 seconds)
