Jinfeng Chen

US Patent:

20110029933, Feb 3, 2011

Filed:

Jan 23, 2008

Appl. No.:

12/864501

Inventors:

Shixian Chu - Lafayette LA, US
Jinfeng Chen - Lafayette LA, US
Zonghuan Wu - Lafayette LA, US
Vijay V. Raghavan - Lafayette LA, US

International Classification:

G06F 17/30
G06F 3/048

US Classification:

715854, 707737, 707E17044

Abstract:

A method, interface, and apparatus for expressing data objects is described. A method for expressing information can comprise the steps of: extracting attributes of a plurality of data objects, wherein the attributes reflect information associated with the data objects; hierarchically grouping the data objects based on the attributes of the data objects to form a hierarchical data object structure; establishing basic representation units, wherein each basic representation unit is described using multimedia attributes and each unit corresponds to at least one data object; establishing a multi-dimensional mapping relationship between distinct attributes of a subset of the data objects that correspond to each basic representation unit and the multimedia attributes used to describe that unit and displaying the basic representation units to reflect the hierarchical grouping of the data objects on a multimedia display device, wherein the mapping relationship is used to determine the multimedia attributes of the basic representation units.

US Patent:

20230094001, Mar 30, 2023

Filed:

May 20, 2021

Appl. No.:

17/926610

Inventors:

- Houston TX, US
Jinfeng Chen - Houston TX, US

Assignee:

Tracey Technologies Corp. - Houston TX

International Classification:

A61B 3/107
A61B 3/14
A61B 3/00

Abstract:

Provided herein is a corneal topography system that utilizes a prism placed in optical alignment between the pattern image generator, such as a Placido disk, and the eye. The corneal topography system may be a prismatic triangulating corneal topography system that utilizes light rays of angle θ at the edge of the prism not passing through the prism, light rays that deviate from angle θ passing through the prism and light rays of angle a calculated from the reflection image to determine the corneal reflection point on the corneal surface. Also provided is a method for mapping a corneal surface of an eye of a subject utilizing an optical prism to produce a reflection image from a corneal surface reflection point on the corneal surface of the eye.