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Universal Serial Bus: Universal Serial Bus Specification
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Universal Serial Bus is a high speed connectivity standard enabling simple plug and play connections to devices such as modems, digital cameras, camcorders, keyboards and mice. The standard is being supported by many leading suppliers of computers and peripherals. An attractive advantage of USB is devices are hot pluggable (live connection/disconnection without data loss or interruption). Cables and devices manufactured to the current USB Revision 2.0 specification are backward compatible with version 1.1, but the reverse scenario does not apply.
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"The Universal Serial Bus (USB) is a universal peripheral connection specification for the PC. USB provides a uniform approach for developing products so they interoperate seamlessly through a one-size-fits-all plug and port connection."
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Note that the official Universal Serial Bus Specification uses the term function to refer to USB-capable peripheral devices. To avoid any confusion with the term function as it refers to callable units of C/C++ code, the Windows CE documentation set will use the term USB device instead.
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Universal Serial Bus, or USB, is a computer standard designed to eliminate the guesswork in connecting peripherals to your PC. USB came into life when a group of 7 companies : Compaq, Digital Equipment, IBM, Intel, Microsoft and Northern Telecom decides to form a specifications to merge legacy connectivity such as RS232, Printer port, PS2 port into a single common connector to the Personal Computer.
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This patent, titled "Method and apparatus for extending the range of the universal serial bus protocol", builds upon earlier patents covering USB 1.1 range extension. The invention described in the patent enables long-range or increased latency communication between high-speed (480 Mb/s) host controllers and full-speed (12 Mb/s) peripherals. It ... provides support for the high-bandwidth peripherals that were introduced by the USB 2.0 specification. The issuance of this patent is the third of a series of applications filed through the Patent Corporation Treaty in Canada, the United States and the United Kingdom. The United Kingdom patent was issued in December 2005 and the US patent was issued in January of 2007.
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The complete set of USBD Interface (USBDI) functions listed in the Universal Serial Bus Specification, Revision 1.0 that is exposed by the USBD module. The API set includes Transfer Functions, Pipe Functions, Device Configuration Functions, and Miscellaneous Functions. Full documentation on these functions is in the Windows CE Device Driver Kit. This API set allows OEMs and IHVs to write USB device drivers to support any USB-compliant devices.
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Universal Serial Bus Specification