Method and apparatus for recognizing and performing handwritten calculations
US5428805A · kind A · utility
56Cited by
6References
46Claims
0Family size
Inventor
Key dates
| Filing date | Dec 22, 1992 |
| Grant date | Jun 27, 1995 |
| Priority date | — |
| Expiry date | Dec 22, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V30/32
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A pen-based calculator recognizes handwritten input. The calculator comprises a display simulating a sheet of paper, and a stylus simulating a pen. The user writes a calculation on the calculator as if it were a piece of scratch paper. The calculator uses handwriting recognition to identify the various elements of the calculation, performs the calculation, and then displays the result at an appropriate location.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.