Color detection and/or recognition apparatus
US5027195A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 10, 1989 |
| Grant date | Jun 25, 1991 |
| Priority date | — |
| Expiry date | Oct 10, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J2001/448
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A color detection and/or recognition apparatus comprises a twin row array (16) of detector elements, each element being arranged to produce an electrical signal on detection of a given color. The two rows (21, 22) each comprise a plurality of groups of detector elements, with the elements in each group of at least one of the arrays being sensitive to a respective different color, with corresponding elements in the two rows being sensitive to different colors, and with the four elements of adjacent corresponding pairs of elements in the two rows being sensitive to at least three different colors. THe electrical signals are processed to provide a determination of the detection of color or the recognition of a color. The two rows of detector elements, typically photosensitive sites in CCD arrays, may be formed closely adjacent one another on the same semiconductor substrate, together with CCD shift registers (23, 24) along the outside edges of the two rows. A line buffer delay circuit (25) may be provided for the outputs of one of the rows.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.