Touch pad circuit board having radio frequency antenna and capacitive touch pad and access control reader device using the radio frequency antenna in proximity to the capacitive touch pad
US10438425B2 · kind B2 · utility
5Cited by
1References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 8, 2016 |
| Grant date | Oct 8, 2019 |
| Priority date | — |
| Expiry date | Sep 7, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07C9/0069
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An access control reader device integrates a touch pad in proximity to a radio frequency identification (RFID) antenna. A touch pad circuit board includes the RF antenna having a physical aperture and the capacitive touch pad positioned at least partially within the physical aperture of the RF antenna. This configuration allows the RFID reader to detect RFID tags in proximity to the capacitive touch pad. In order to prevent interference, such as the formation of eddy currents, the sensors of the touch pad are in the form of interrupted loops.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.