Image sensing operator input device
US6303924A · kind A · utility
95Cited by
45References
36Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 21, 1998 |
| Grant date | Oct 16, 2001 |
| Priority date | — |
| Expiry date | Dec 21, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0395
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A computer input device detects images on a surface. The computer input device generates input information indicative of a change event when the device switches from reading one predetermined pattern to reading another predetermined pattern. The present invention can also be directed to a method of using the input device or printable medium with the predetermined patterns disposed thereon.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.