Pulsed backlight systems and methods

A method of operating an electronic device having a display with a backlight unit and a liquid crystal display unit, the method comprising:

• displaying first display content with an LCD unit at a first LCD frame rate;
• while providing the first display content at the first LCD frame rate, providing backlight pulses with a first backlight pulse pattern;
• displaying second display content with the LCD unit at a second LCD frame rate;
• while providing the second display content at the second LCD frame rate, providing backlight pulses with a second backlight pulse pattern;
• and
• providing backlight pulses with a transition pulse pattern between providing the backlight pulses with the first backlight pulse pattern and the second backlight pulse pattern.

A method of operating an electronic device having a display with a backlight unit and a liquid crystal display unit, the method comprising:

• displaying first display content with an LCD unit at a first LCD frame rate;
• while providing the first display content at the first LCD frame rate, providing ‘backlight pulses with a first backlight pulse pattern;
• displaying second display content with the LCD unit at a second LCD frame rate;
• while providing the second display content at the second LCD frame rate, providing backlight pulses with a second ‘backlight pulse pattern;
• and
• splitting at least a first pulse of the second backlight pulse pattern between at least one pulse of the first backlight pulse pattern and at least one other pulse of the second backlight pulse pattern.

A method of operating an electronic device having a display with a backlight unit and a liquid crystal display unit, the method comprising:

• operating the liquid crystal display unit with a variable frame rate;
• while operating the liquid crystal display unit with the variable frame rate, providing backlight pulses with the backlight unit at a first pulse rate;
• with a decision engine for the display, determining whether one or more frequency transition conditions associated with the variable frame rate have been met:, and with the decision engine, obtaining a transition pulse pattern that is specific to a frame rate transition for the LCD unit if the one or more frequency transition conditions have been met;
• with the backlight unit, providing backlight pulses according to the obtained transition pulse pattern;
• and
• with the backlight unit, providing backlight pulses with a second pulse rate after providing the backlight pulses according to the obtained transition pulse pattern.