Chen Yunqi Huang

US Patent:

55416462, Jul 30, 1996

Filed:

Jan 24, 1995

Appl. No.:

8/378045

Inventors:

Chen Huang - San Diego CA

Assignee:

Proxima Corporation - San Diego CA

International Classification:

H04N 1704

US Classification:

348177

Abstract:

The display device image stabilization apparatus is utilized in a display system having a frame buffer coupled to a display device. The apparatus includes a sampling arrangement coupled to the frame buffer for sampling input video data to generate a display signal, wherein the display signal is stored temporarily in the frame buffer as buffer information. A control device is coupled to the frame buffer for comparing the buffer information with reference information to determine whether the buffer information and the reference information are similar to one another. The control device generates a gain adjustment signal when the buffer information and the reference information are different from one another. Coupled between the control device and the sampling arrangement is a phase lock loop circuit for varying the display signal in response to the gain adjustment signal. The buffer information is updated continuously until it is substantially similar to the reference information, and the display image has been stabilized.

US Patent:

20210342996, Nov 4, 2021

Filed:

Apr 30, 2020

Appl. No.:

16/864002

Inventors:

- Santa Clara CA, US
Chen Huang - San Diego CA, US

Assignee:

Advanced Micro Devices, Inc. - Santa Clara CA

International Classification:

G06T 7/00
G06T 15/06
G06T 15/08
G06T 15/00
G06T 17/10
G06F 9/50

Abstract:

A technique for performing a ray intersection test, the method comprising: receiving a request for an early termination ray intersection test for a ray; testing the ray against one or more early termination box nodes and one or more normal box nodes of a bounding volume hierarchy; and based on the test of the ray against the one or more early termination box nodes, determining whether to end traversal of the bounding volume hierarchy and determine whether the ray intersects geometry for the purpose of the ray intersection test.

US Patent:

20210287421, Sep 16, 2021

Filed:

Mar 13, 2020

Appl. No.:

16/819008

Inventors:

- Santa Clara CA, US
Chen Huang - San Diego CA, US

Assignee:

Advanced Micro Devices, Inc. - Santa Clara CA

International Classification:

G06T 15/06
G06T 17/10
G06T 15/00
G06T 1/20

Abstract:

A technique for performing a ray tracing operation for a ray is provided. The method includes performing one or more ray-box intersection tests for the ray against one or more bounding boxes of a bounding volume hierarchy to eliminate one or more nodes of the bounding volume hierarchy from consideration, for one or more triangles of the bounding volume hierarchy that are not eliminated by the one or more ray-box intersection tests, performing one or more ray-triangle intersection tests utilizing samples displaced from a centroid position of the ray, and invoking one or more shaders of a ray tracing pipeline for the samples based on results of the ray-triangle intersection tests.