19. A system, comprising: a controller configured to accept an input video signal that includes first color data, second color data, and third color data per pixel; produce a first transfer word and a second transfer word in dependence on the first color data, the second color data, and the third color data per pixel; and transmit the first transfer word and the second transfer word to a laser diode driver (LDD) over a same multi-bit wide bus during one cycle of a data transfer clock signal; and a laser diode driver (LDD) configured to receive the data transfer clock signal, wherein each cycle of the data transfer clock signal includes a low-to-high portion and a high-to-low portion; receive and store the first transfer word in response to the low-to-high portion of a cycle of the data transfer clock signal; receive and store the second transfer word in response to the high-to-low portion of a cycle of the data transfer clock signal; produce the first color data, the second color data and the third color data in dependence on the first and second received transfer words; and drive a first DAC of the LDD with the first color data; drive a second DAC of the LDD with the second color data; and drive a third DAC of the LDD with third color data.
19. A system, comprising: a controller configured to accept an input video signal that includes first color data, second color data, and third color data per pixel; produce a first transfer word and a second transfer word in dependence on the first color data, the second color data, and the third color data per pixel; and transmit the first transfer word and the second transfer word to a laser diode driver (LDD) over a same multi-bit wide bus during one cycle of a data transfer clock signal; and a laser diode driver (LDD) configured to receive the data transfer clock signal, wherein each cycle of the data transfer clock signal includes a low-to-high portion and a high-to-low portion; receive and store the first transfer word in response to the low-to-high portion of a cycle of the data transfer clock signal; receive and store the second transfer word in response to the high-to-low portion of a cycle of the data transfer clock signal; produce the first color data, the second color data and the third color data in dependence on the first and second received transfer words; and drive a first DAC of the LDD with the first color data; drive a second DAC of the LDD with the second color data; and drive a third DAC of the LDD with third color data. 20. The system of claim 19 , further comprising: a red light emitting element; a green light emitting element; and a blue light emitting element; wherein each of the red, green and blue light emitting elements is driven by a current output of a different one of the first, second and third DACs.