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嵌入式系统实时音视频流USB传输的设计
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2009-06-12
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在嵌入式Linux 平台上开发USB OTG 控制器工作在外设模式时传输实时音视频流的
应用程序和USB Gadget驱动程序,目标是实现压缩视频流和原始音频流从USB OTG 设备到
USB主机的实时传输。测试结果表明设计能够满足实时传输要求，音视频带宽可达
1000Kbit/s。若进一步改进设计，传输带宽仍有巨大的提升空间。
关键词: 嵌入式系统; USB Gadget 驱动；音视频
Abstract: Develop application and USB Gadget driver to transmit real-time audio and
video on embedded Linux platform when USB OTG controller worked in device mode. The
aim is real-time compressed video and raw audio transmission which from USB OTG
device to USB host. The experimentation shows that the design can satisfy the aim.
Transmission bandwidth can up to 1000Kbit/s. With the further improvement of the
design, the transmission bandwidth is still tremendous room for improvement.
Key words: embedded system; USB Gadget driver; audio video;
应用程序和USB Gadget驱动程序,目标是实现压缩视频流和原始音频流从USB OTG 设备到
USB主机的实时传输。测试结果表明设计能够满足实时传输要求，音视频带宽可达
1000Kbit/s。若进一步改进设计，传输带宽仍有巨大的提升空间。
关键词: 嵌入式系统; USB Gadget 驱动；音视频
Abstract: Develop application and USB Gadget driver to transmit real-time audio and
video on embedded Linux platform when USB OTG controller worked in device mode. The
aim is real-time compressed video and raw audio transmission which from USB OTG
device to USB host. The experimentation shows that the design can satisfy the aim.
Transmission bandwidth can up to 1000Kbit/s. With the further improvement of the
design, the transmission bandwidth is still tremendous room for improvement.
Key words: embedded system; USB Gadget driver; audio video;
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