Method and apparatus for sensing the color of an object
US5537212A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 12, 1993 |
| Grant date | Jul 16, 1996 |
| Priority date | — |
| Expiry date | Oct 12, 2013 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B2225/70
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A light guide receives light reflected from an object, such as a moving ball in a game, and directs the light to a charge coupled device. Light sensitive pixels of the charge coupled device detect the intensities of red, green, and blue wavelengths and provides intensity levels to an averager which averages the intensities. Ratios between the red, green, and blue digital signal intensities are compared to determine the predominant color in the guided light and hence the predominant color of the object. Multiple light guides can be used to sense the color of objects, where each light guide can direct light to a different subset of pixels on the charge coupled device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.