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Communication terminal with USB audio card, and method for implementing USB audio card in communication terminal

A communication terminal and sound card technology, applied in the direction of sound input/output, etc., can solve the problems of large size and difficult to integrate in short and portable communication terminals.

Inactive Publication Date: 2009-05-13
KONKA GROUP
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AI Technical Summary

Problems solved by technology

However, although the traditional built-in sound card can provide better audio effects, it is bulky and difficult to integrate into a short and portable communication terminal.

Method used

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  • Communication terminal with USB audio card, and method for implementing USB audio card in communication terminal

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Embodiment Construction

[0018] The core idea of ​​the invention is to multiplex some functions of the central processing unit and the analog baseband processor in the communication terminal, so as to realize the function of the USB sound card.

[0019] Please refer to figure 1 Shown is a schematic structural diagram of a communication terminal with a USB sound card in the present invention. The communication terminal of the present invention especially refers to a personal consumer communication device capable of communication, such as a mobile phone and a personal digital assistant (PDA) supporting GSM / GPRS communication. As for how the communication terminal of the present invention realizes the communication function and what kind of communication structure it has, no detailed description is given here; the following focuses on how the communication terminal of the present invention realizes the function of the USB sound card.

[0020] In order to complete basic communication functions, the commu...

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Abstract

The invention discloses a method for a communication terminal with a USB sound card and a method used for realizing the USB sound card in the communication terminal. The communication terminal comprises a central processing unit and an analog baseband processor which are interlinked with each other. The central processing unit comprises a USB terminal controller and an I<2>S bus controller which is connected with the USB terminal controller and supports bidirectional I<2>S bus data format conversion. The analog baseband processor is internally provided with an audio frequency codec which is used for coding and decoding audio frequency data. The USB terminal controller, the I<2>S bus controller and the audio frequency codec are multiplexed to form the USB sound card. In the invention, partial functions of the central processing unit and the analog baseband processor in the communication terminal are multiplexed, so as to realize the USB sound card based on I<2>S bus, and the USB sound card can match and use the functions of multimedia such as MP3, MP4 and the like in the communication terminal, so as to ensure that the communication terminal has the application value of the multimedia furthermore.

Description

technical field [0001] The invention relates to audio processing technology, in particular to a communication terminal integrating a USB sound card, and a method for realizing a USB sound card by multiplexing functional modules in a communication terminal such as a mobile phone as a carrier. Background technique [0002] In recent years, USB products have emerged one after another. With the efforts of the USB Developers Forum, USB audio has become a standard specification, and USB sound cards have also quietly appeared in the market. Since the USB sound card has a built-in audio digital-to-analog converter (DAC) and active power amplifier, the audio data enters the USB sound card digitally, which can completely eliminate the interference of analog signals. Therefore, the USB sound card may become a substitute for the existing built-in sound card. Taste. [0003] With the continuous maturity and development of mobile communication technology, mobile communication terminals o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/16
Inventor 钟伟峰
Owner KONKA GROUP
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