Duncan A. Riach — 21 Patents at NVIDIA

Duncan A. Riach has been granted 21 US patents while listed as an inventor at NVIDIA. The first was granted in 2004 and the most recent in December 2025. Duncan A. Riach ranks #201,324 of 4,157,543 US inventors in our database (top 4.8%). Patent records list Duncan A. Riach in Mountain View, CA, US.

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Showing 1–21 of 21 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
12493784	Tie-breaker for inference reproducibility	Alvin Ihsani	2025-12-09
9489712	Multiple simultaneous unique outputs from a single display pipeline	Michael A. Ogrinc, Brijesh Tripathi, Wayne Douglas Young	2016-11-08	$28,734,000
9292069	System and method for controlling mode switches in hardware	Michael A. Ogrinc, Leslie E. Neft	2016-03-22	$13,057,000
8963940	Isochronous hub contracts	Robert A. Alfieri, Brijesh Tripathi, Patrick R. Marchand	2015-02-24	$8,823,000
8447035	Contract based memory management for isochronous streams	Brijesh Tripathi	2013-05-21	$17,170,000
8234488	System and method for controlling mode switches in hardware	Michael A. Ogrinc, Leslie E. Neft	2012-07-31	$9,777,000
8154556	Multiple simultaneous unique outputs from a single display pipeline	Michael A. Ogrinc, Brijesh Tripathi, Wayne Douglas Young	2012-04-10	$18,398,000
8155316	Contract based memory management for isochronous streams	Brijesh Tripathi	2012-04-10	$18,398,000
8134567	Active raster composition and error checking in hardware	Leslie E. Neft, Michael A. Ogrinc, Tyvis Cheung	2012-03-13	$7,465,000
8125491	Multiple simultaneous unique outputs from a single display pipeline	Michael A. Ogrinc, Brijesh Tripathi, Wayne Douglas Young	2012-02-28	$10,154,000
8049761	Bus protocol for transferring pixel data between chips	Michael A. Ogrinc, Tyvis Cheung	2011-11-01	$24,137,000
7999815	Active raster composition and error checking in hardware	Leslie E. Neft, Michael A. Ogrinc, Tyvis Cheung	2011-08-16
7941645	Isochronous pipelined processor with deterministic control	Leslie E. Neft, Michael A. Ogrinc, Wayne Douglas Young	2011-05-10	$67,755,000
7882380	Work based clock management for display sub-system	Michael A. Ogrinc, Leslie E. Neft	2011-02-01	$21,156,000
7586492	Real-time display post-processing using programmable hardware	John M. Danskin, Jonah M. Alben, Michael A. Ogrinc, Anthony Michael Tamasi	2009-09-08	$16,429,000
7573528	Method and apparatus for displaying progressive material on an interlaced device	—	2009-08-11	$20,232,000
7426594	Apparatus, system, and method for arbitrating between memory requests	Brijesh Tripathi	2008-09-16	$17,111,000
7015970	Method and apparatus for displaying progressive material on an interlaced device	—	2006-03-21	$17,029,000
6937290	Method and apparatus using the Bresenham algorithm to synthesize a composite SYNC signal	Michael B. Nagy	2005-08-30	$25,172,000
6897874	Method and apparatus for providing overlay images	—	2005-05-24	$61,775,000
6788312	Method for improving quality in graphics pipelines through a frame's top and bottom field processing with conditional thresholding and weighting techniques	Hassane S. Azar, Douglas Sim Dietrich, Jr., Henry Packard Moreton, Douglas H. Rogers	2004-09-07	$29,541,000

Duncan A. Riach — 21 Patents

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