Light emitting device and control system for the same

A light emitting device, comprising:

• N number of light emitting diode groups, where N≥2;
• and
• a control system including N number of drive circuits, N number of transmission lines, a common transmission line, a control line and a control circuit,
• said N number of drive circuits being connected in series and being electrically connected respectively to said N number of light emitting diode groups, and each including a first terminal unit, a second terminal unit, and a data terminal, said first terminal unit of an ith one of said N number of drive circuits being electrically connected to said second terminal unit of an (i−1)th one of said N number of drive circuits, where 2≤i≤N,
• wherein said N number of transmission lines are electrically connected to said data terminals respectively of said N number of drive circuits, said common transmission line is electrically connected to said first terminal unit of a first one of said N number of drive circuits, and said control line is electrically connected to said N number of transmission lines and said common transmission line;
• wherein said control circuit includes a common transceiver terminal that is electrically connected to said control line and that is configured to output a command signal, the command signal is configured for address setting, the command signal for address setting is configured for sequentially setting assigned addresses respectively for said N number of drive circuits;
• and
• wherein each of said N number of drive circuits has a state setting operable to switch between a transmission state and a non-transmission state with respect to signal transmission between said first terminal unit and said second terminal unit, and for each drive circuit of said N number of drive circuits, when the assigned address of said drive circuit is set, the state setting of said drive circuit is in the transmission state where a signal at said first terminal unit of said drive circuit has content identical to content of a signal at said second terminal unit of said drive circuit.