Patent ID: 8531267
Filing Date: 2013-09-10
Classification: H04B

Abstract:
1. A method for visual confirmation of the functioning of wireless receiver in a classroom, the method comprising: generating a wireless FM signal comprising a carrier signal in a teacher unit including a transmitter; transmitting from the transmitter said wireless FM signal to a group of student units, each including a receiver; receiving said wireless FM signal by the receivers in the student units; detecting presence of said carrier signal in the received wireless FM signal; initiating a timer in each receiver of the group of receivers responsive to the detected presence of said carrier signal; intermittently flashing a visual indicator of each receiver that has initiated its respective timer, based on an output signal of said respective timer; and synchronizing the flashing with the activation of said signal indicating the presence of the carrier signal, wherein the intermittence and flashing of the visual indicators of the receivers are synchronized with each other based on the detected carrier signal indicating the presence of the carrier signal, and the timer is based on a clock of an FM system in each receiver.