Display device operating in sub-field process and method of displaying images in such display device

A display device which displays images in accordance with a sub-field process, comprising:

• (a) a first block which receives an image signal therein, varies the number of bits of the received image signal, and outputs said image signal;
• (b) a second block which calculates an average picture level (APL) of images defined by said image signal transmitted from said first block;
• (c) a third block which receives said image signal from said second block, converts the received image signal into sub-field coding data, and outputs said sub-field coding data to a display panel;
• and
• (d) a fourth block which receives said average picture level from said second block, converts the received average picture level to the number of sustaining pulses, transmits said number of sustaining pulses to said display panel as a sustaining pulse output signal, and transmits said number of sustaining pulses to said third block,
• wherein said third block selects the number of bits of a signal to be input thereinto, in accordance with said number of sustaining pulses received from said fourth block.

A method of displaying images in a display device which displays images in accordance with a sub-field process, comprising the steps of:

• (a) calculating the number of sustaining pulses, based on an average picture level (APL) of input image signal;
• (b) determining the number of bits of a signal to be output after inverse-gamma processed, in accordance with said number of sustaining pulses;
• and
• (c) determining the number of bits of a signal to be sub-field coded, in accordance with said number of sustaining pulses.

A method of displaying images in a display device which displays images in accordance with a sub-field process, comprising the steps of:

• (a) varying the number of bits of a received image signal;
• (b) calculating an average picture level (APL) of images defined by said image signal resulted from said step (a);
• (c) converting said image signal resulted from said step (b) into sub-field coding data, and outputting said sub-field coding data to a display panel;
• (d) converting said average picture level into the number of sustaining pulses;
• and
• (e) selecting the number of bits of said image signal resulted from said step (b), in accordance with said number of sustaining pulses.