Vehicle lamp system and light distribution controller

A light distribution controller structured to control a light distribution variable lamp including a plurality of pixels arranged in an array, the light distribution controller comprising:

• a memory including a first region, a second region, and a third region;
• a processor structured to write a first layer image defining a light distribution of a high beam to the first region of the memory, to write a second layer image defining a light-shielding portion of the high beam to the second region of the memory, and to write a third layer image defining a light distribution of a low beam to the third region of the memory by executing a software program;
• and
• a hardware logic circuit structured to read the first layer image to the third layer image stored in the memory, and to synthesize the first layer image to the third layer image to generate light distribution image data.

A method of controlling a light distribution variable lamp including a plurality of pixels arranged in an array, the method comprising:

• writing a first layer image defining a light distribution of a high beam in a first region of a memory;
• writing a second layer image defining a light-shielding portion of the high beam in a second region of the memory;
• writing a third layer image defining a light distribution of a low beam in a third region of the memory;
• synthesizing the first layer image to the third layer image stored in the memory by a hardware logic circuit to generate light distribution image data;
• and
• converting a pixel value of each pixel of the light distribution image data into a PWM signal and controlling a corresponding pixel.