Patent Number: 6,249,756

Title: Hybrid flow control

Abstract: An improved hybrid flow control protocol for providing FIFO capacity to prevent overflow due to bytes arriving after the FIFO indicates it is not ready to receive any more bytes utilizes a combination of a high/low watermark and credit based system. In one embodiment, when the byte count exceed the high watermark fixed credits are sent when N bytes are pulled from the FIFO. In a second embodiment, variable credits are sent depending on the difference between the number of bytes received in and pulled from the FIFO.

Inventors: Bunton; William Patterson (Pflugerville, TX), Brown; David A. (Austin, TX), Heron; David T. (Austin, TX), Peet, Jr.; Charles Edward (Austin, TX), Watson; William Joel (Austin, TX), Krause; John C. (Georgetown, TX)

Assignee: Compaq Computer Corp.

International Classification: G06F 5/06 (20060101); G06F 013/00 (); G06F 003/00 ()

Expiration Date: 06/19/2018