A multi-screen laser projection system comprises a laser source that generates a plurality of laser beams, an image display control system, a plurality of modulator arms each including a light modulator; and an optical switch coupled to the image display control system and modulators. The digital signal includes operating ranges and any other information that will allow the central computer system to recognize the mechanical device and automatically incorporate the device’s operating characteristics into the total system without disruption. From this information, a joint histogram of the values in the two datasets is computed to provide a raw analysis of how the intensities in the first dataset correspond to intensities in the second dataset. An enforcer module may also be configured to respond to the request based on the usage level and the weight of the request. CPU reads out data stored in EEPROM in accordance with the temperature detected by a temperature detecting circuit, and sets the determined communication CMR into the communication circuit.