Touchscreen two-dimensional emulation of three-dimensional objects
US4649499A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 7, 1984 |
| Grant date | Mar 10, 1987 |
| Priority date | — |
| Expiry date | Mar 7, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S345/902
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Computer programs are provided which utilize a touchscreen to emulate three-dimensional objects on a two-dimensional computer screen. One program, called personal cardfile (PCF), combines the convenience of a desktop rotary cardfile with the power of a computerized product. PCF presents an image of a rotary file, complete with "knobs" for flipping through "cards" in a cardfile, and "tabs" for selecting "cards" to be represented individually on the touchscreen. Another program, called financial computer (FC), emulates an HP12C handheld financial calculator. The HP12C calculator is manufactured by Hewlett-Packard Company, Palo Alto, Calif. On a computer touchscreen, an operator sees a familiar looking "calculator" and touches its "keys" to operate it, just as for a conventional three-dimensional calculator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.