Patent ID: 8432339

Claim:
A method for increasing the bit-depth of a video display system, comprising: illuminating a digital micro-mirror device with a light source having a variable power supply; receiving a signal indicating the light output provided to the digital micro-mirror device by the light source should be reduced to a target level during a predetermined time period; reducing a power supplied to the light source by the variable power supply in response to the signal such that the light output of the light source is reduced to about a target level during the predetermined time period; displaying a least significant bit on the digital micro-mirror device during the predetermined time period; displaying at least a portion of a non-least significant bit on the digital micro-mirror device during the predetermined time period, the display of the least significant bit temporally interrupting the display of the at least a portion of the non-least significant bit; and decreasing a speed of a master clock controlling the digital micro-mirror device in response to the light output of the light source deviating below the target level during the predetermined time period.