Method and apparatus for generating driving signal, backlight, and display apparatus

An apparatus for generating driving signal, comprising:

• a first circuit configured to generate a first driving signal for a first frame of image, the first driving signal comprising a plurality of first pulse width modulation signals, each of the plurality of first pulse width modulation signals configured to have a uniform duration, the first circuit configured to subsequently detect a vertical synchronization signal;
• a modulation controller configured to receive the plurality of first pulse width modulation signals to modulate light;
• wherein, upon detecting the vertical synchronization signal, the first circuit is configured to:
• determine whether a most recent first pulse width modulation signal is partially generated, wherein the most recent first pulse width modulation signal is partially generated if a duration of the most recent first pulse width modulation generated at time when the vertical synchronization signal is detected is less than the uniform duration;
• and
• in response to determining the most recent first pulse width modulation signal is partially generated, perform, based on a comparison of the duration of the most recent first pulse width modulation generated with at least one threshold, either one of:
• continue generation of the first driving signal, and delay generating of a second driving signal until the most recent first pulse width modulation signal is fully generated;
• or
• terminate generation of the first driving signal;
• and generate the second driving signal comprising a plurality of second pulse width modulation signals for the second frame of image.