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:
May. 16, 2006
Filed:
Jul. 13, 2001
Stephan Rosner, Dresden, DE;
Jörg Winkler, Ullersdorf, DE;
Ralf Flemming, Radebeul, DE;
Stephen T. Novak, Boxdorf, DE;
Stephan Rosner, Dresden, DE;
Jörg Winkler, Ullersdorf, DE;
Ralf Flemming, Radebeul, DE;
Stephen T. Novak, Boxdorf, DE;
Legerity, Inc., Austin, TX (US);
Abstract
The invention relates to an apparatus and a method for accessing memories having a time-variant response over a PCI bus by using two-stage DMA transfers. The invention provides a method for executing a read request over a PCI bus by transferring the requested data from a main memory of a PCI card to a device located on the PCI bus, comprising the steps of obtaining an access request from a read access queue, transferring, by a first DMA transfer, the requested data from the main memory to a buffer memory on the PCI card, and transferring, by a second DMA transfer, the data from the buffer memory to the device.