Patent ID: 8766880

Claim:
A method of identifying the location of a light module in a two dimensional array of light modules, comprising: receiving, via a single data port of a plurality of data ports of a recipient light module, data representing at least the identity of a row number and a column number of a source light module that is the source of the received data; setting the column number for the recipient light module to the column number of the source light module and a row number for the recipient light module to the row number of the source light module incremented by a first predetermined value if the data stream is received via a first data port of the recipient light module; setting the row number for the recipient light module to the row number of the source light module and a column number for the recipient light module to the column number of the source light module incremented by a second predetermined value if the data stream is received via a second data port of the recipient light module; setting the row number for the recipient light module to the row number of the source light module decremented by a third predetermined value and a column number for the recipient light module to the column number of the source light module if the data stream is received via a third data port of the recipient light module; and setting the column number for the recipient light module to the column number of the source light module decremented by a fourth predetermined value and a row number for the recipient light module to the row number of the source light module if the data stream is received via a fourth data port of the recipient light module.