The USB protocol is strictly hierarchical.
USB协议有严格的层次结构。
There are four types of data transfer in the USB protocol.
有四种类型的数据传输的USB协议。
The key point of this dissertation is USB protocol layer design and realization.
论文的重点是USB协议层的设计与实现。
USB protocol is host (PC) centered, a USB system is composed by a USB host, a USB hub, and USB devices.
USB通信协议是一种主机为中心的通信协议，一个USB系统由usb主机、US B集线器和USB设备组成。
Based on CH371, it is no need to understand USB protocol or drivers and can easily achieve a USB port design.
基于CH371套件不需要了解任何US B协议或者驱动程序，就可以轻松地完成一个USB接口的设计。
USB protocol has four transfer types: Control transfer, Bulk transfer, Interrupt transfer, and Isochronous transfer.
该协议具有四种传输方式，即控制传输、批量传输、终端传输和等时传输。
In 1994, an alliance of four industrial partners (Compaq, Intel, Microsoft, and NEC) started specifying the USB protocol.
1994年，一个由四个行业伙伴(Compaq、Intel、Microsoft和NEC)组成的联盟开始制定usb协议。
Secondly, the USB protocol and USB transmission layer are analyzed. The USB system and communication process are plain.
其次分析了USB协议和蓝牙us B传输层，明确了USB的体系结构及usb的通信过程。
With the extensive application of USB technology, there is a significant increase in demand for the device controller chip which is compatible with USB protocol.
随着usb技术的广泛应用，市场对兼容usb协议的设备控制器芯片的需求大量增加。
For the newly developed water level transmitter with USB, on the basis of USB protocol and computer principle, the software and hardware of the instrument is analyzed in detail.
以新研制的USB接口水位变送器为例，结合USB协议和计算机基本原理，对设备软、硬件设计进行了深入分析，探讨了在数据采集设备中直接使用USB接口的实现方法。
The bottom hardware driver is written by Lingyang chip microcomputer AL and the USB protocol & client layer application program written by Lingyang chip microcomputer C language.
它的底层硬件驱动程序用凌阳单片机汇编语言编写，USB协议和应用层程序用凌阳单片机C语言编写。
In the system, the upper layer application software for the USB embedded host in household entertainment products is designed and implemented based on USB Protocol, by resolution of DVD.
系统在usb协议基础上，以DVD解决方案为依托，实现嵌入式usb主机系统在家庭娱乐消费产品中的应用软件设计与实现。
USB protocol layer describes the grammar and protocol used in the communication of USB host with USB devices, and presents the USB hierarchy consisting of fields, packets, transactions and transfers.
US B协议层描述了USB主机与usb设备交互时的语法和协议，从中定义了字段、包、事务和传送的结构，以及由字段到包、由包到事务、由事务到传送所组成的组织层次关系。
Data capture device agents would interface with these devices via Bluetooth, USB, TCP, or some other protocol to capture the data.
数据捕捉设备代理将通过Bluetooth、u SB、TCP或其他用于捕捉数据的协议与这些设备进行交互。
Therefore, the Linux USB layer, the BlueZ USB transport driver, and the BlueZ protocol stack are the main kernel layers that get the device working.
因此，LinuxUS b层、BlueZ US b传输器驱动程序以及BlueZ协议栈是使设备工作的主要内核层。
Advanced USB Port Monitor is a software tool that analyzes the USB Bus, USB device and protocol. With this app you can debug and test USB devices and software.
先进的US B端口监视器是一个软件工具，分析了USB总线，USB设备和协议。有了这个程序，你可以调试和测试usb设备和软件。
It describes how to use the USB HID protocol to discover a HID class device's feature set and how a Bluetooth device can support HID services using the L2CAP layer.
它描述了如何使用USBHID协议来发现HID类设备的特征集与蓝牙设备能如何使用L2CAP层来支持HID服务。
The BlueZ USB transport driver (drivers/bluetooth/hci_usb.c) registers this class/subclass/protocol information with the Linux USB core.
BlueZUSB传输驱动程序（drivers/bluetooth/hci_usb.c）将该class/subclass/protocol信息注册到Linux USB核心。
The protocol of USB is researched.
研究分析了USB协议。
In chapter four, the thesis processes USB communication system collectivity design after introducing USB communication protocol.
第四章在介绍了USB通信协议基础上，进行USB通信系统的总体设计。
To analyse the configuration process between OS protocol driver and USB bus device and the matching process between driver and the correspond device function interface.
分析出系统协议栈与USB总线设备的配置交互过程以及设备驱动程序与设备对应接口的匹配过程。
USB is a new PC interconnection protocol and has many advantages, It is a tendency that USB replaces the RS232 as computer and peripheral standard interface.
USB作为一种新的PC机互连协议，因其诸多优点，有逐渐取代RS 232串口，成为计算机和外设标准接口之趋势。
The software designs adopt assembly language, C51 language to compile data sampling program and programs on protocol processing and data transfer conducted to USB interfacing chip.
软件设计中采用汇编语言、C51语言编写数据采集程序和对usb接口芯片进行协议处理及数据交换的程序。
Although ISP1362 is employed as the USB control chip here, the protocol stack has the same structure besides the slight difference between the control registers when other chips used.
虽然系统使用的US B控制芯片是飞利浦公司的ISP1362，但是除了控制寄存器的使用不同外，US B协议栈的实现却是相通的。
The protocol of USB Host Controller is analysed and the application of USB technique to intelligent instruments are introduced.
本文研究了US B主控制器协议，并分析了USB技术应用于智能仪表的技术可行性。
This paper introduced the system's hardware schematics and the humiture data acquisition methods, and a more detailed analysis of wireless communication protocol and USB firmware design method.
对系统的硬件原理及温湿度采集方法进行了介绍，对无线通信协议及usb固件设计方法进行了较详细分析。
The USB basic character and common USB device protocol which is necessary for embedded USB host system developing is introduced detailed.
本文详细介绍了嵌入式USB主机系统开发需要考虑的USB基本特性和USB设备的通用协议。
The USB interface technology is applied to the protocol test board, which facilitates the test system's setting up.
其中，协议测试板的设计运用了USB接口的技术，从而使得测试系统的搭建也更加灵活方便。
The CAN communication adapter base on USB bus, the network model and communication protocol of CAN bus are explained briefly.
主要包括基于usb总线的CAN适配器、CAN总线网络模型和通信协议的设计。
This dissertation compared USB interface with other computer interfaces, summarized the advantages of USB interface, and studied the USB 2.0 protocol.
论文将US b接口与其它计算机接口进行了比较，总结出usb接口的优点，并深入地研究了USB 2.0协议。
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