Patent ID: 11886676
Assignee: SCHLAGE LOCK COMPANY LLC
Field: Computer technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 9:
10. An access control device, comprising:
a keypad assembly comprising a printed circuit board, a capacitive touch keypad matrix on the printed circuit board, and an antenna on the printed circuit board substantially coplanar with and circumferentially surrounding the capacitive touch keypad matrix; and
a controller connected with each of the keypad assembly and the antenna such that the controller is operable to receive access codes via each of the keypad assembly and the antenna, wherein the keypad assembly further comprises:
a plurality of touch sensitive key locations, comprising a first key location and a second key location;
a first line comprising:
a first branch connected between a junction and the first key location;
a second branch connected between the junction and the second key location; and
a third branch connected between the junction and the controller;

a second line connected between the first key location and the controller; and
a third line connected between the second key location and the controller; and
wherein the first branch, the third branch, and the second line electrically connect the first key location to the controller in a first signal transmission loop, and wherein the second branch, the third branch, and the third line electrically connect the second key location to the controller in a second signal transmission loop, so that the first key location and the second key location are connected with and transmit signals to and receive signals from the controller in electrical parallel with one another.