Apparatus for and method of displaying video signals

An apparatus for displaying video signals, comprising:

• an input source configured to receive video signals having different frame frequencies and provide a first video signal having a first frame frequency from among the received video signals;
• an interpolation frame generator configured to generate one or a plurality of interpolation frames that are needed to convert the first frame frequency of the first video signal into a second frame frequency that is higher than the first frame frequency;
• a frame frequency converter configured to convert the first video signal into a second video signal having the second frame frequency by interpolating the generated interpolation frames between adjacent original frames of the first video signal;
• a display panel having a matrix of pixel forming dots arranged in horizontal and vertical directions, configured to display the second video signal;
• and
• a drive voltage controller configured to apply a drive voltage to each dot of the display panel in such a way that the polarity of the drive voltage is inverted between positive and negative around a central voltage at intervals of two or more frames of the second video signal, wherein:
• the drive voltage controller adaptively changes a polarity inversion period of the drive voltage according to the second frame frequency.

A method of displaying video signals, comprising:

• receiving video signals having different frame frequencies and providing an input video signal from among the received video signals;
• detecting, as a first frame frequency, the frame frequency of the input video signal;
• determining a second frame frequency for the input video signal according to the first frame frequency, the second frame frequency being higher than the first frame frequency;
• generating, according to the determined second frame frequency, one or a plurality of interpolation frames to be interpolated between adjacent original frames of the input video signal;
• converting the input video signal into a video signal having the second frame frequency by interpolating the generated interpolation frames between the original frames of the input video signal;
• and
• displaying the video signal having the second frame frequency on a display.

A method of displaying video signals, comprising:

• receiving video signals having different frame frequencies and providing a first video signal having a first frame frequency from among the received video signals;
• generating one or a plurality of interpolation frames that are needed to convert the first frame frequency of the first video signal into a second frame frequency that is higher than the first frame frequency;
• converting the first video signal into a second video signal having the second frame frequency by interpolating the generated interpolation frames between adjacent original frames of the first video signal;
• and
• displaying the second video signal on a display panel having a matrix of pixel forming dots arranged in horizontal and vertical directions by supplying the second video signal to the display panel and by applying a drive voltage to each dot of the display panel in such a way that the polarity of the drive voltage is inverted between positive and negative around a central voltage at intervals of two or more frames of the second video signal, wherein:
• displaying the second video signal on a display panel adaptively changes a polarity inversion period of the drive voltage according to the second frame frequency.