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US 2010/0161856 A1Published application
Usb audio and mobile audio system using usb audio controller
AssigneeSolid State System Co., Ltd.
InventorRong-Hwa Ding
Life of this patent
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Abstract
A USB audio controller includes an USB interface unit, an audio interface unit, a storage interface unit, and a processing unit. The USB interface unit is used to connect to a USB bus for communicating with a host by a communication information. The audio interface unit is used to connect to at least one audio device for communicating with an audio signal. The storage unit is used to connect to a memory unit for communicating storage information. The processing unit is for processing the communicating information and audio signal.
Claims16
A universal serial bus (USB) audio controller, comprising:
- an USB interface unit, used to connect to a USB bus for communicating with a USB host by a communication information;
- an audio interface unit, used to connect to at least one audio device for communicating with an audio signal;
- a storage interface unit, used to communicate with an external storage unit by a storage information;
- and
- a processing unit, having at least one processor, for processing the communicating information and the audio signal, and for processing a USB audio device class protocol with respect to a USB device class definition for the audio device and a USB storage device class protocol with respect to a USB mass storage class at the same time when the USB interface unit is connected to a USB host, and for processing an audio playback function with an audio source from the storage unit when the USB interface unit is disconnected from the USB host,
- wherein the USB audio device class protocol and USB storage device class protocol communicate between the USB host and the USB audio device,
- wherein the audio playback function communicates between the storage interface unit and the audio interface unit.
4 more elements
Dependencies are inferred from the claim text.