Concurrent asynchronous USB data stream destuffer with...

Details Concurrent asynchronous USB data stream destuffer with... Concurrent asynchronous USB data stream destuffer with...

2005-04-19

2005-04-19

Elamin, A. (Department: 2116)

Electrical computers and digital data processing systems: input/

Input/output data processing

Peripheral adapting

C375S240250, C375S267000, C710S052000, C710S033000

Reexamination Certificate

active

06883047

ABSTRACT:
A concurrent asynchronous USB 2.0 data stream destuffer and separator with variable-width bit-wise memory controller is described. A parallel stream bit destuffer module identifies in parallel one or more stuffed bits in a decoded data field of a received data stream using a six-bit sliding window. The stuffed bits are bits that were inserted into the received USB data stream by a transmitter to force data transitions in the received USB data stream. A data separator module separates the one or more stuffed bits from a plurality of valid data bits in the decoded data field. A memory module generates an incremental pointer value representative of the number of valid bits and writes the plurality of valid data bits from the decoded data field into a variable sized bit-wise memory structure.

REFERENCES:
patent: 6292516 (2001-09-01), Petsko et al.
patent: 6522694 (2003-02-01), Ryan

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