Apparatus and method for converting frame rate without external memory in display system

A display system comprising:

• a synchronization detector that detects a horizontal synchronization signal and a vertical synchronization signal from an external synchronization signal;
• a frame rate conversion unit that generates a masked signal, a frame of every several frames of which is disable-masked, using the horizontal and vertical synchronization signals;
• a driving circuit unit that receives an external image signal, that processes the image signal according to predetermined display specifications, and that outputs the processed image signal only when the masked signal is enabled;
• and
• a display device that displays the image signal output from the driving circuit unit.

A frame rate conversion method comprising:

• generating a frame count signal from a vertical synchronization signal;
• generating a masking enable signal using the frame count signal;
• and
• outputting a masked data enable signal by disable-masking a frame of every several frames of a data enable signal in response to the masking enable signal, the data enable signal representing a horizontal screen display region and a vertical screen display region.

A display method comprising:

• detecting a horizontal synchronization signal and a vertical synchronization signal from an external synchronization signal;
• generating a masked signal, a frame of every several frame of which are disable-masked, using the horizontal and vertical synchronization signals;
• receiving an external image signal, processing the image signal according to predetermined display specifications, and outputting the processed image signal only when the masked signal is enabled;
• and
• displaying the output image signal.