The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 12, 1994
Filed:
Dec. 27, 1991
David A Gagne, Goffstown, NH (US);
Satish L Rege, Groton, MA (US);
Digital Equipment Corporation, Maynard, MA (US);
Abstract
A method and apparatus for transferring packets of information with different attributes from a device interface to buffers in a host memory dedicated to particular attribute values or ranges of values. The apparatus consists of multiple shared data structures in the form of receive rings, each associated with memory buffers dedicated to a particular range of values for a particular packet attribute. The device interface determines which receive ring is associated with a buffer dedicated to the proper attribute value range by comparing the value of the attribute of the received packet with the values of attributes associated with the buffers of each ring. A sequencing ring is provided to store the order in which each receive ring must be accessed by the host cpu when retrieving packets. This sequencing ring ensures that the host cpu will retrieve the packets in the order in which they were received.