The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Mar. 19, 2013

Filed:

Mar. 30, 2009
Applicants:

Hyuk-hwan Kim, Asan-si, KR;

Seok-hyun Nam, Seoul, KR;

Sang-hyuck Yoon, Seoul, KR;

Hyun-jin Kim, Gyeonggi-do, KR;

Chi-o Cho, Asan-si, KR;

Dong-min Yeo, Asan-si, KR;

Inventors:

Hyuk-Hwan Kim, Asan-si, KR;

Seok-Hyun Nam, Seoul, KR;

Sang-Hyuck Yoon, Seoul, KR;

Hyun-Jin Kim, Gyeonggi-do, KR;

Chi-O Cho, Asan-si, KR;

Dong-Min Yeo, Asan-si, KR;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G09G 3/36 (2006.01); G09G 5/02 (2006.01); G02F 1/1335 (2006.01); F21V 7/04 (2006.01);
U.S. Cl.
CPC ...
Abstract

In a machine-implemented method of local dimming a light source of a light source block for driving the light source block to provide a plurality of image regions with light, duty ratios of a first light source and a second light source adjacent to the first light source are initially determined by using a first target luminance value of a first image region closest to the first light source and a second target luminance value of a second image region closest to the second light source. The initially determined duty ratios are compensated by using a target luminance value of a remaining image region excluding the first and second image regions among the image regions receiving the light generated from the first and second first light sources. The first and second first light sources are driven by using the compensated duty ratios.


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