Display Device Pulse Modulation Overshoot Current

The patent applies periodic action by using pulse width modulation with multiple pulse modulation periods within a single frame. Instead of using a single long modulation period, the display device divides the frame into multiple shorter pulse modulation periods, each contributing to the overall gray scale representation. This allows high bit depth to be achieved through temporal distribution of modulation events rather than extending a single modulation period, thereby reducing the effective modulation time perception while maintaining precision.

The patent segments the modulation process into multiple independent pulse modulation periods within a frame. Each pulse modulation period handles a portion of the bit depth representation, and the human visual system integrates these segmented temporal samples into a perceived gray scale value. This segmentation allows the system to achieve high bit depth (e.g., 10 bits or higher) by distributing modulation events across time rather than requiring a single extended modulation period, thus resolving the contradiction between precision and time.

The patent uses periodic pulse modulation to achieve high gray scale precision while maintaining brightness. By distributing the modulation events across multiple short pulse periods within a frame rather than using one long period, the light source can operate at higher peak brightness during each pulse while the overall frame duration remains constant. The human visual system integrates these periodic bright pulses to perceive the correct gray scale, thus maintaining both precision and perceived brightness.

The patent employs dynamic pulse width modulation where the duty cycle of each pulse is dynamically adjusted to represent different gray scale levels. By using multiple dynamic pulses per frame instead of a single static modulation period, the system can maintain higher average brightness while still achieving fine gray scale discrimination through varying pulse widths within the dynamic sequence.

The patent segments the high-bit-depth modulation task into multiple smaller pulse modulation periods distributed throughout the frame. Instead of one continuous long-duration modulation cycle, the system uses multiple short-duration pulses, each handling a portion of the bit depth information. This segmentation maintains display precision through cumulative temporal sampling while reducing the duration of any individual modulation event, thus lowering the effective modulation cycle perception.

The patent maintains continuity of useful action by distributing pulse modulation events continuously throughout the entire frame duration rather than concentrating them in a single extended modulation cycle. This continuous distribution of short pulses ensures that the display precision is maintained through ongoing temporal sampling while avoiding the creation of a single long modulation cycle, thereby reducing the maximum modulation cycle duration.