Wireless keyboard with improving radiation transmission
US6927760B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 3, 2002 |
| Grant date | Aug 9, 2005 |
| Priority date | — |
| Expiry date | Jun 7, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0221
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The invention relates to a wireless keyboard capable of operating with a radiation-based signal receiver of a portable computing apparatus. The wireless keyboard includes a radiation-based signal transmitter functions converting a corresponding key signal into a radiation beam and emitting the radiation beam. The radiation beam has a covered zone. The wireless keyboard also includes a user-adjustable engaging device having a first end engaging with the housing and a second end where the radiation-based signal transmitter is fixed. The radiation-based signal transmitter is capable of approaching the radiation-based signal receiver by adjusting the engaging device. Thereby, the radiation-based signal receiver is located in the covered zone of the radiation beam when the wireless keyboard operates with the radiation-based signal receiver.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.