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:
Jan. 24, 2012
Filed:
Nov. 21, 2008
Sreenivas Reddy, Hyderabad, IN;
John George Mathieson, Los Gatos, CA (US);
Sreenivas Reddy, Hyderabad, IN;
John George Mathieson, Los Gatos, CA (US);
NVIDIA Corporation, Santa Clara, CA (US);
Abstract
According to an aspect of the present invention, the communication between processors and peripheral controllers is provided using packets. In an embodiment, the access requests are specified according to a common format such that all the information required for performing each access request is included in a single packet and sent to the peripheral controller. The peripheral controller performs the access request on the external device and generates a response. According to another aspect, the packet format enables the peripheral controller to send responses, requests originating from the external devices and interrupt requests. According to yet another aspect, the packets from processors are first stored in a random access memory (RAM) and a DMA controller retrieves the packets and delivered to the respective peripheral controllers.