Image edge sensor
US5351309A · kind A · utility
39Cited by
1References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 30, 1992 |
| Grant date | Sep 27, 1994 |
| Priority date | — |
| Expiry date | Jun 30, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/50
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An image sensor comprised of an array of photo-sensing devices is devised to generate digital images of objects. Each photo-sensing device consists of four identically shaped photo-sensitive surfaces, each photo-sensing surface being shaped into an isosceles trapezoid having 45.degree. base angles. One photo-sensing device corresponds to one pixel of the digital image. Pixels that representing image edges can be directly located and orientations of image edges represented by those pixels can both be determined by arithmetically processing the values of electrical signals generated by the photo-detecting devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.