ERWEITERTES USB-PROTOKOLL

ERWEITERTES USB-PROTOKOLL

An extension to the Universal Serial Bus (USB) protocol that utilizes reserved bits in the OHCI Endpoint Descriptors to signal which root hub port(s) should transmit the data. Typically, all ports transmit (broadcast) data. The present invention encodes transmission information that can be used by t...

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Hauptverfasser: GUO, WEI, WILLIAMS, GREGORY GEORGE, DERNIS, MITCHELL STEPHEN, SINGH, HARJIT, JANUS, EIKO, VARMA, ANKUR
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Sprache:ger
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creator GUO, WEI
WILLIAMS, GREGORY GEORGE
DERNIS, MITCHELL STEPHEN
SINGH, HARJIT
JANUS, EIKO
VARMA, ANKUR
description An extension to the Universal Serial Bus (USB) protocol that utilizes reserved bits in the OHCI Endpoint Descriptors to signal which root hub port(s) should transmit the data. Typically, all ports transmit (broadcast) data. The present invention encodes transmission information that can be used by the hardware to effectively control which port(s) need to be tri-stated. However, by setting, the "on" bits for all the ports, the present invention retains standard USB functionality. Also provided is a method to increase the bandwidth of low speed devices connected to the USB bus by increasing the data payload for such devices.
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title ERWEITERTES USB-PROTOKOLL
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