USB adapter for burst mode communications

Details USB adapter for burst mode communications USB adapter for burst mode communications

2005-01-11

2005-01-11

Gaffin, Jeffrey (Department: 2182)

Electrical computers and digital data processing systems: input/

Input/output data processing

Data transfer specifying

C710S008000, C710S046000, C710S056000, C710S062000

Reexamination Certificate

active

06842797

ABSTRACT:
Disclosed is device and method for improved burst communication on a USB bus. In one embodiment, a USB Ethernet adapter device uses the USB Interrupt Channel to send a message to an Ethernet class driver, via the host USB stack, that the Ethernet adapter device has data to transmit on the USB. The interrupt message preferably includes the size of the data packet to be transmitted or the number of packets to send. The class driver responds by instructing the USB stack to configure a new Transfer Descriptor having buffer pointers of sufficient size for the data packet. The USB Host Controller then processes the Transfer Descriptor, thereby inviting the Ethernet adapter device to transmit its data and responsively storing the data in the predetermined buffer.

REFERENCES:
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patent: 5978858 (1999-11-01), Bonola et al.
patent: 6021129 (2000-02-01), Martin et al.
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patent: 6370603 (2002-04-01), Silverman et al.
patent: 6523081 (2003-02-01), Karlsson et al.
patent: 6584519 (2003-06-01), Russell
patent: 6647438 (2003-11-01), McVay et al.
“Open Host Controller Interface Specification For USB”, Compaq, Microsoft, National Semiconductor, Release 1a, Sep. 14, 1999, pp. ii to 146.

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