Keyboard and method for switching key code with a single modifier key
US6320519A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 21, 1998 |
| Grant date | Nov 20, 2001 |
| Priority date | — |
| Expiry date | Oct 21, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0238
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A keyboard with key codes switchable by means of a single modifier key and a method of control thereof are provided. When a modifier key such as an Alt key, a Ctrl key, or a Shift key is pressed and then immediately released, the set of key codes is switched to another if no other modifiable key stroke is inserted during the press-and-release operation. Consequently, multimedia hot keys will be obtained by switching the key code set to another set of key coding that represents individual multimedia functions. Following the press-and-release of the Alt key, the Ctrl key, or the Shift key which activated the multimedia function, the key code set returns to the original key code set
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.