Display apparatus and control method thereof
AssigneeSamsung Electronics Co., Ltd.
InventorsByoung-hwa Jung, Jong-sul Min, Young-sun Kim
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Abstract
A display apparatus having a display part to receive a predetermined weight number of sustain pulses to display a frame of an image time-shared into a plurality of subfields, the display apparatus includes a motion detector to determine whether an input image is a still image, and a pulse driver to transmit a number of sustain pulses to the display part, and to decrease the number of sustain pulses transmitted to the display part to cause every frame to be smaller than the weight number when the motion detector determines the input image to be the still image. In this display apparatus and control method thereof, image sticking is prevented without deteriorating gradation representation and without a visual error.
Claims22
A display apparatus having a display part to receive a predetermined weight number of sustain pulses to display a frame of an image time-shared into a plurality of subfields, the display apparatus comprising:
- a motion detector to determine whether an input image is a still image;
- and
- a pulse driver to transmit a number of sustain pulses to the display part, and to decrease the number of sustain pulses transmitted to the display part to cause every frame of the input image to be smaller than the weight number in proportion to a number of frames determined by the motion detector to be the still image region when the motion detector determines the input image to be the still image.
A display apparatus having a display part receiving a predetermined weight number of sustain pulses to display a frame of an image time-shared into a plurality of subfields, the display apparatus comprising:
- a high brightness detector to detect a high brightness pixel having a brightness level higher than a reference brightness;
- a motion detector to determine whether the high brightness pixel includes a still image;
- and
- a gradation limiter to transmit a brightness level of a pixel to the display part, the brightness level represented by at least two sustain time to define an address time between the sustain pulses, and to decrease the brightness level of the high brightness pixel detected by the high brightness detector according to the number of time that the motion detector determines the input image to be the still image when the motion detector determines the input image to be the still image.
A method of controlling a display apparatus having a display part to receive a predetermined weight number of sustain pulses to display a frame of an image time-shared into a plurality of subfields, the method comprising:
- determining whether an input image is moving;
- and
- at least decreasing the number of sustain pulses transmitted to the display part every frame according to a number of frames of the input image determined to be a till image, and transmitting the decreased sustain pulses to the display part.
Dependencies are inferred from the claim text.