System and method of displaying information about an item by an electronic display

摘要

A system and method of displaying information about an item which uses a radio frequency signal to change displayed information. The system includes a display, a memory including a first memory location containing first display information and a second memory location containing second display information, and control circuitry which receives the radio frequency signal from a portable transmitter and displays the second information from the second memory location in response to the radio frequency signal. The control circuitry additionally senses a loss of the radio frequency signal and displays the first information from the first memory location in response to the loss of the radio frequency signal. One illustrative example envisions an electronic price label.