Patent ID: 7023004

Claim:
A multi-mode electromagnetic radiation emitting device, comprising: an emission module comprising at least one electromagnetic radiation emitting source, a first terminal, a second terminal and a polarity responsive controller interposed between said electromagnetic radiation emitting sources and said first and second terminals; a DC power source comprising a positive terminal and a negative terminal; and a polarity switch for selectively defining either interconnections between (a) said first and positive terminals and (b) said second and negative terminals, or interconnections between (a) said first and negative terminals and (b) said second and positive terminals; wherein the polarity responsive controller comprises: a first bank of instructions and a second bank of instructions, each of said first and second banks comprising at least two predetermined sets of signalling instructions; a switch for selecting a first set of instructions from said sets of instructions in said first bank and a second set of instructions from said second bank; a first power supply circuit activated by the, interconnections between (a) said first and positive terminals and (b) said second and negative terminals, and supplying, when activated, power from said DC power source to said electromagnetic radiation emitting sources according to said first set of instructions, thereby causing said sources to emit electromagnetic radiation according to said first set of instructions; and a second power supply circuit activated by the interconnections between (a) said first and negative terminals and (b) said second and positive terminals, and supplying, when activated, power from said DC power source to said electromagnetic radiation emitting sources according to said second set of instructions, thereby causing said sources to emit electromagnetic radiation according to said second set of instructions.