Patent ID: 7612736

Claim:
A light-emitting unit constructing the unit of light emission of a display unit or the unit of light emission of an ornamental display, comprising: an infrared receiving element that receives data including an address transmitted by infrared light; an address storage section that stores the address; and a controller that recognizes an address from the data and stores the address in the address storage section, wherein the data containing the address is data in a specific format whose correctness can be verified and the controller verifies the correctness of the format of the data, wherein only when the correctness of the format is confirmed, the address is stored in the address storage section, wherein the controller stores a predetermined time longer than the quiescent time of a display control signal of a display light emitter, and determines whether the quiescent mode is continued for more than the predetermined time period or over the predetermined time period immediately before the recognition of the data input, and wherein only when the quiescent mode is continued for more than the predetermined time period or over the predetermined time period, the controller recognizes the address from the data.