SYSTEM AND METHOD OF EXTENDING COMMUNICATIONS WITH THE WIEGAND PROTOCOL

摘要

An extension of the industry standard Wiegand protocol (2) for enabling two way extended communication, enhanced error detection, encryption, multiple reader capability, and enhanced information regarding the embedded data stream between a Wiegang device such as a card reader (10) and a control panel (4) on the existing 5-wire bus structure without requiring the modification to the existing infrastructure.