Patent Application Titled "Timing Controller and Driving Method Thereof" Published Online (USPTO 20170098403)

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By a News Reporter-Staff News Editor at Politics & Government Week -- According to news reporting originating from Washington, D.C., by VerticalNews journalists, a patent application by the inventor CHUNG, Won Chang (Yongin-si, KR), filed on , was made available online on .

No assignee for this patent application has been made.

Reporters obtained the following quote from the background information supplied by the inventors: "One or more embodiments described herein relate to a timing controller and a method for driving a timing controller.

"Various displays have been developed to replace cathode ray tubes. Examples include liquid crystal displays, field emission displays, plasma display panels, organic light emitting displays. In an organic light emitting display, the quantity of light emitted for a given gray scale value may decrease when the accumulated emission quantity is increased. Also, when the level of current supplied to an organic light emitting diode of a pixel in the display is increased (in an attempt to maintain quantity of light), the life span of the display may be reduced."

In addition to obtaining background information on this patent application, VerticalNews editors also obtained the inventor's summary information for this patent application: "In accordance with one or more embodiments, a timing controller includes a degradation quantity generator to generate a degradation quantity for each of a plurality of pixels in a display panel based on image data; a degradation quantity accumulator to generate an accumulated degradation quantity based on the degradation quantity for each of the pixels; a feedback data generator to generate feedback image data based on the accumulated degradation quantity; and a feedback reflector to generate image data, in which the degradation quantity is compensated, based on the image data and the feedback image data, wherein an absolute value of the feedback image data, when the accumulated degradation quantity is a first accumulated degradation quantity level, is greater than an absolute value of the feedback image data when the accumulated degradation quantity is a second accumulated degradation quantity level higher than the first accumulated degradation quantity level.

"The feedback data generator may include a scaling factor generator to generate a scaling factor; a scaling factor application rate generator to generate a scaling factor application rate based on the accumulated degradation quantity; and a scaling factor calculator to calculate the feedback image data based on the scaling factor and the scaling factor application rate.

"The scaling factor application rate, when the accumulated degradation quantity is the first accumulated degradation quantity level, may be greater than the scaling factor application rate when the accumulated degradation quantity is the second accumulated degradation quantity level, and the feedback image data may be based on the following equation:

"fRGB=(1-R)+R.times.SF

"where fRGB is the feedback image data, R is the scaling factor application rate, and SF is the scaling factor.

"When a level of the accumulated degradation quantity is in a first range, a level of the scaling factor application rate may be in a second range different from the first range, and the scaling factor may be generated based on the accumulated degradation quantity. The first range may be greater than the second range.



"The timing controller may include a look-up table which is to output the feedback image data corresponding to the received scaling factor and scaling factor application rate. The accumulated degradation quantity may include sub accumulated degradation quantities for each pixel, and the feedback image data may includes sub feedback image data for each pixel.

"In accordance with one or more other embodiments, a method for driving a timing controller includes generating a degradation quantity for each of a plurality of pixels in a display panel based on image data; generating an accumulated degradation quantity based on the degradation quantity for each of the pixels; generating feedback image data based on the accumulated degradation quantity; and generating image data, in which the degradation quantity is compensated, based on the image data and the feedback image data, wherein an absolute value of the feedback image data when the accumulated degradation quantity is a first accumulated degradation quantity level is greater than an absolute value of the feedback image data when the accumulated degradation quantity is a second accumulated degradation quantity level higher than the first accumulated degradation quantity level.

"Generating the feedback image data may include generating a scaling factor; generating a scaling factor application rate based on the accumulated degradation quantity; and calculating the feedback image data based on the scaling factor and the scaling factor application rate. The feedback image data may be expressed by the following equation:

"fRGB=(1-R)+R.times.SF

"where fRGB is the feedback image data, R is the scaling factor application rate, and SF is the scaling factor.

"When a level of the accumulated degradation quantity is in a first range, a level of the scaling factor application rate in a second range may be different from the first range, and the scaling factor may be generated based on the accumulated degradation quantity. The first range may be greater than the second range.

"In accordance with one or more other embodiments, an apparatus includes first logic to generate a degradation quantity for each of a plurality of pixels based on first image data; second logic to generate an accumulated degradation quantity based on the degradation quantity for each of the pixels; third logic to generate feedback image data based on the accumulated degradation quantity; and fourth logic to generate second image data for output to a display, the second image data corresponds to a compensated degradation quantity based on the first image data and the feedback image data.

"An absolute value of the feedback image data, when the accumulated degradation quantity is a first accumulated degradation quantity level, may be greater than an absolute value of the feedback image data when the accumulated degradation quantity is a second accumulated degradation quantity level higher than the first accumulated degradation quantity level. The third logic may generate a scaling factor; generate a scaling factor application rate based on the accumulated degradation quantity; and calculate the feedback image data based on the scaling factor and the scaling factor application rate."

For more information, see this patent application: CHUNG, Won Chang. Timing Controller and Driving Method Thereof. Filed and posted . Patent URL: http://appft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220170098403%22.PGNR.&OS=DN/20170098403&RS=DN/20170098403

Keywords for this news article include: Patents, Information Technology, Information and Data Generators.

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