Method for processing data quantifying force applied to one or more keys of a computer keyboard
US8648812B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 28, 2008 |
| Grant date | Feb 11, 2014 |
| Priority date | — |
| Expiry date | Sep 4, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0219
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A computer receives data from a keyboard having one or more keys which cause generation of keyboard data that quantitatively describe the relative force applied to those keys. The keyboard data are transmitted in an HID report containing identifiers for one or more keys that have been pressed and force data for each key. The force data may be a multi-bit value quantifying the key force, or a null indicator signaling that the key is not force-sensing. Keyboard data messages are then prepared which identify keys pressed, contain force data, and may indicate whether the force data updates previous force data. Force updates are only provided to application programs registering for key force data. In other aspects of the invention, key repeat messages are automatically generated for a key held pressed by a user. The key repeat messages are generated at a rate controlled by the amount of force applied to the key.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.