Source: {"pile_set_name": "USPTO Backgrounds"}

1. Field of the Invention
The present invention relates to a multi-color light apparatus, and more particularly to a multi-color light apparatus with only two power wires to transmit data and power.
2. Description of Related Art
In winter, most people living in North America will decorate their houses with multi-color light apparatus to celebrate Christmas. The multi-color light apparatus includes many different illumination functions, such as showing different colors (red, green or blue color), flashing and so on.
Normally, the multi-color light apparatus with many different illumination functions is driven by a driving control integrated circuit (IC). The driving control IC will output different control signals to the multi-color light apparatus, so a plurality of light bulbs in the multi-color light apparatus will be randomly or sequentially turned on according to the control signals.
With reference to FIG. 3, a conventional driving control IC 30 includes a plurality of pins. Those pins include a red light output pin (OUTR), a green light output pin (OUTG), a blue light output pin (OUTB), a ground pin (GND), a signal output pin (SDO), a signal input pin (SDI), a mode set pin (SET) and a power input pin (VDD). The data signal is outputted from the driving control IC 30 via an electric wire. The power signal is outputted from the driving control IC 30 via another electric wire. Therefore, the conventional driving control IC 30 requires at least three electric wires (a data wire, a positive power wire and a negative power wire) to drive the multi-color light apparatus to perform many different illumination effects.
Accordingly, a need arises to develop a multi-color light apparatus without using too many wires, so the cost is reduced and the usage of the electric wires is minimized.