Patent ID: 8320768
Filing Date: 2012-11-27
Classification: H04B

Abstract:
1. A method comprising: (a) transmitting, by a sender, a frame for establishing a communication link with a receiver prior to transmitting data; (b) receiving, by the sender, a response frame for reporting a response regarding establishing the communication link with the receiver prior to transmitting data; (c) transmitting, to the receiver, a data frame containing information from the sender; (d) receiving, by the sender, an acknowledge frame from the receiver in response to the data frame transmitted by the sender; (e) transmitting, by the sender, a disconnect frame to the receiver; (f) receiving by the sender, a disconnect acknowledge frame from the receiver in response to the disconnect frame transmitted by the sender; and (g) transmitting a visible light sequence in a time period when the sender and the receiver have no data to transmit during respective frames when data is typically transmitted in an infrared communication protocol, the visible light sequence providing an indication that infrared communication is ongoing.