Buffer management for wireless USB isochronous in endpoints

Details Buffer management for wireless USB isochronous in endpoints Buffer management for wireless USB isochronous in endpoints

2011-01-04

2011-01-04

Tseng, Cheng-Yuan (Department: 2184)

Electrical computers and digital data processing systems: input/

Input/output data processing

Input/output data buffering

C710S058000, C710S029000, C711S100000, C340S870030

Reexamination Certificate

active

07865636

ABSTRACT:
An apparatus such as a Device Wire Adapter (DWA) with improved buffer management and packaging of Wireless Universal Serial Bus (WUSB) isochronous packets for transmission to a host. The apparatus includes an isochronous IN endpoint that receives data segments from a device function. Memory is associated with the endpoint and includes an endpoint buffer configured in a loop and a plurality of registers. The apparatus includes an endpoint controller that stores the received data segments sequentially in the loop buffer, assigns a set of the registers to each of the stored data segments, and stores additional packet information in the registers for each of the data segments rather than in the endpoint buffer. The additional packet information includes presentation time for the stored data segment derived from a sample time of a last segment in the buffer and a time interval between two consecutive data segments in the buffer.

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