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公开(公告)号：AU744770B2
公开(公告)日：2002-03-07
申请号：AU1725499
申请日：1998-12-14
Applicant: QUALCOMM INC
Inventor： HEIMBIGNER WADE L , IV JAMES A HUTCHISON , OLIVEIRA LOUIS D
Abstract: An audio band processor and a method and circuit for controlling its gain. The audio band processor comprises a first variable gain amplifier for receiving an analog audio signal; an analog to digital converter for converting the analog audio signal to a digital audio signal; and an interface circuit for encoding the digital audio signal. The interface circuit also arranges the digital audio signal into a sequence of encoded transmit frames, and receives a sequence of encoded receive frames, each receive frame comprising a predetermined number of encoded digital audio signal data bits and a predetermined number of digital gain control bits. The interface circuit also adjusts a gain level of the first variable gain amplifier in response to the digital gain control bits. In another embodiment, the audio band processor further comprises a second variable gain amplifier, and the interface circuit adjusts a gain level of the second variable gain amplifier in response to the digital gain control bits.
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公开(公告)号：AU1725499A
公开(公告)日：1999-06-28
申请号：AU1725499
申请日：1998-12-14
Applicant: QUALCOMM INC
Inventor： HEIMBIGNER WADE L , HUTCHISON JAMES A , OLIVEIRA LOUIS D
Abstract: An audio band processor and a method and circuit for controlling its gain. The audio band processor comprises a first variable gain amplifier for receiving an analog audio signal; an analog to digital converter for converting the analog audio signal to a digital audio signal; and an interface circuit for encoding the digital audio signal. The interface circuit also arranges the digital audio signal into a sequence of encoded transmit frames, and receives a sequence of encoded receive frames, each receive frame comprising a predetermined number of encoded digital audio signal data bits and a predetermined number of digital gain control bits. The interface circuit also adjusts a gain level of the first variable gain amplifier in response to the digital gain control bits. In another embodiment, the audio band processor further comprises a second variable gain amplifier, and the interface circuit adjusts a gain level of the second variable gain amplifier in response to the digital gain control bits.
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公开(公告)号：CA2313219C
公开(公告)日：2007-05-29
申请号：CA2313219
申请日：1998-12-14
Applicant: QUALCOMM INC
Inventor： HEIMBIGNER WADE L , HUTCHISON JAMES A , OLIVEIRA LOUIS D
Abstract: An audio band processor and a method and circuit for controlling its gain. T he audio band processor comprises a first variable gain amplifier (202) for receiving an analog audio signal; an analog to digital converter (204) for converting said analog audio signal to a digital audio signal; and an interface circuit (206) for encoding said digital audio signal. The interface circuit (206) also arranges said digital audio signal into a sequence of encoded transmit frames, and receives a sequence o f encoded receive frames, each receive frame comprising a predetermined number of encoded digital audio signal data bits and a predetermined number of digital gain control bits. The interface circuit (206) also adjusts a gain level of said first variable gain amplifier in response to said digital gain control bits. In another embodiment, the audio band processor further comprises a second variable gain amplifier (202 ), and the interface circuit adjusts a gain level of said second variable gain amplifier in response to said digital gain control bits.
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公开(公告)号：ES2230736T3
公开(公告)日：2005-05-01
申请号：ES98962093
申请日：1998-12-14
Applicant: QUALCOMM INC
Inventor： HEIMBIGNER WADE L , HUTCHISON JAMES A IV , OLIVEIRA LOUIS D
Abstract: Procesador de banda de audio (106), que comprende: un primer amplificador de ganancia variable (202, 302) para recibir una señal de audio analógica; un convertidor analógico-digital (306) para convertir dicha señal de audio analógica en una señal de audio digital, y un circuito de interfaz (310) para codificar dicha señal de audio digital y para disponer dicha señal de audio digital en una secuencia de tramas de transmisión codificadas, y para recibir una secuencia de tramas de recepción codificadas, comprendiendo cada trama de recepción un número predeterminado de bits de datos de la señal de audio digital codificada y un número predeterminado de bits de control de ganancia digital, estando destinado además dicho circuito de interfaz (310) a ajustar el nivel de ganancia de dicho primer amplificador de ganancia variable (202 y 302) en respuesta a dichos bits de control de ganancia digital.
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公开(公告)号：NO20002955L
公开(公告)日：2000-08-10
申请号：NO20002955
申请日：2000-06-09
Applicant: QUALCOMM INC
Inventor： HEIMBIGNER WADE LYLE , HUTCHISON IV JAMES A , OLIVEIRA LOUIS D
Abstract: An audio band processor and a method and circuit for controlling its gain. The audio band processor comprises a first variable gain amplifier for receiving an analog audio signal; an analog to digital converter for converting the analog audio signal to a digital audio signal; and an interface circuit for encoding the digital audio signal. The interface circuit also arranges the digital audio signal into a sequence of encoded transmit frames, and receives a sequence of encoded receive frames, each receive frame comprising a predetermined number of encoded digital audio signal data bits and a predetermined number of digital gain control bits. The interface circuit also adjusts a gain level of the first variable gain amplifier in response to the digital gain control bits. In another embodiment, the audio band processor further comprises a second variable gain amplifier, and the interface circuit adjusts a gain level of the second variable gain amplifier in response to the digital gain control bits.
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Patent Agency Ranking
公开(公告)号：NO20002955A
公开(公告)日：2000-08-10
申请号：NO20002955
申请日：2000-06-09
Applicant: QUALCOMM INC
Inventor： HEIMBIGNER WADE LYLE , HUTCHISON IV JAMES A , OLIVEIRA LOUIS D
CPC classification number: H03M1/185
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公开(公告)号：NO326176B1
公开(公告)日：2008-10-13
申请号：NO20002955
申请日：2000-06-09
Applicant: QUALCOMM INC
Inventor： HEIMBIGNER WADE LYLE , OLIVEIRA LOUIS D , HUTCHISON IV JAMES A
Abstract: An audio band processor and a method and circuit for controlling its gain. The audio band processor comprises a first variable gain amplifier for receiving an analog audio signal; an analog to digital converter for converting the analog audio signal to a digital audio signal; and an interface circuit for encoding the digital audio signal. The interface circuit also arranges the digital audio signal into a sequence of encoded transmit frames, and receives a sequence of encoded receive frames, each receive frame comprising a predetermined number of encoded digital audio signal data bits and a predetermined number of digital gain control bits. The interface circuit also adjusts a gain level of the first variable gain amplifier in response to the digital gain control bits. In another embodiment, the audio band processor further comprises a second variable gain amplifier, and the interface circuit adjusts a gain level of the second variable gain amplifier in response to the digital gain control bits.
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公开(公告)号：CA2576520A1
公开(公告)日：2006-02-23
申请号：CA2576520
申请日：2005-08-03
Applicant: QUALCOMM INC
Inventor： BAZARJANI SEYFOLLAH , OLIVEIRA LOUIS D
IPC: H04R19/00
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公开(公告)号：BR9813482A
公开(公告)日：2000-11-14
申请号：BR9813482
申请日：1998-12-14
Applicant: QUALCOMM INC
Inventor： HEIMBIGNER WADE L , IV JAMES A HUTCHISON , OLIVEIRA LOUIS D
Abstract: An audio band processor and a method and circuit for controlling its gain. The audio band processor comprises a first variable gain amplifier for receiving an analog audio signal; an analog to digital converter for converting the analog audio signal to a digital audio signal; and an interface circuit for encoding the digital audio signal. The interface circuit also arranges the digital audio signal into a sequence of encoded transmit frames, and receives a sequence of encoded receive frames, each receive frame comprising a predetermined number of encoded digital audio signal data bits and a predetermined number of digital gain control bits. The interface circuit also adjusts a gain level of the first variable gain amplifier in response to the digital gain control bits. In another embodiment, the audio band processor further comprises a second variable gain amplifier, and the interface circuit adjusts a gain level of the second variable gain amplifier in response to the digital gain control bits.
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公开(公告)号：HK1036166A1
公开(公告)日：2001-12-21
申请号：HK01106997
申请日：2001-10-05
Applicant: QUALCOMM INC
Inventor： HEIMBIGNER WADE L , IV JAMES A HUTCHISON , OLIVEIRA LOUIS D
Abstract: An audio band processor and a method and circuit for controlling its gain. The audio band processor comprises a first variable gain amplifier for receiving an analog audio signal; an analog to digital converter for converting the analog audio signal to a digital audio signal; and an interface circuit for encoding the digital audio signal. The interface circuit also arranges the digital audio signal into a sequence of encoded transmit frames, and receives a sequence of encoded receive frames, each receive frame comprising a predetermined number of encoded digital audio signal data bits and a predetermined number of digital gain control bits. The interface circuit also adjusts a gain level of the first variable gain amplifier in response to the digital gain control bits. In another embodiment, the audio band processor further comprises a second variable gain amplifier, and the interface circuit adjusts a gain level of the second variable gain amplifier in response to the digital gain control bits.
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