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:
Jun. 27, 2000
Filed:
Mar. 26, 1998
Curtis Priem, Fremont, CA (US);
David S Rosenthal, Palo Alto, CA (US);
Nvidia Corporation, Santa Clara, CA (US);
Abstract
An input circuit for an input/output device adapted for use in a computer system in which a command includes information indicating an application program which initiated the command, the input circuit including a first-in first-out (FIFO) buffer circuit having a plurality of stages, each stage providing storage for commands from application programs including both data and an address for the data, a direct memory access circuit for transferring data between a buffer established in system memory by an application program and the FIFO buffer circuit, computer implemented software means for establishing a transfer buffer in system memory, circuitry for determining from a command which application program has initiated the command, and circuitry for assuring that commands from only one application program reside in the FIFO buffer circuit at any time.