A method of driving a light source including a light-emitting block includes generating a luminance representative value based on an average grayscale value and a maximum grayscale value extracted from an image signal corresponding to the light-emitting block. The method further includes detecting a predetermined pattern of the light-emitting block, generating a compensation control signal based on the predetermined pattern, generating a compensated luminance representative value by compensating the luminance representative value based on the compensation control signal, and driving the light-emitting block based on the luminance level of the light-emitting block corresponding to the compensated luminance representative value.
Drawings
Claims18
A method of driving a light source including a light-emitting block, the method comprising:
generating a luminance representative value based on an average grayscale value and a maximum grayscale value extracted from an image signal corresponding to the light-emitting block;
detecting a predetermined pattern of the light-emitting block, based on the average grayscale value and the maximum grayscale value;
generating a compensation control signal based on the predetermined pattern;
generating a compensated luminance representative value by compensating the luminance representative value based on the compensation control signal;
and
driving the light-emitting block based on a luminance level of the light-emitting block corresponding to the compensated luminance representative value.
3 more elements
A light source apparatus comprising:
a backlight unit including a light-emitting block, the light-emitting block including a light source;
a representative value determining part which generates a compensation control signal by determining a luminance representative value based on an average grayscale value and a maximum grayscale value extracted from an image signal corresponding to the light-emitting block and detecting a predetermined pattern of the light-emitting block based on the average grayscale value and the maximum grayscale value;
a representative value compensating part which compensates the luminance representative value in response to the compensation control signal to generate a compensated luminance representative value;
and
a light source driving part which drives the light-emitting block based on a luminance level of the light-emitting block corresponding to the compensated luminance representative value.
2 more elements
A display apparatus comprising:
a light source apparatus comprising:
a backlight unit including a light-emitting block, the light-emitting block including a light source;
a representative value determining part which determines a luminance representative value based on an average grayscale value and a maximum grayscale value extracted from an image signal corresponding to the light-emitting block, which detects a predetermined pattern of the light-emitting block based on the average grayscale value and the maximum grayscale value extracted from the image signal corresponding to the light-emitting block, and which generates a compensation control signal;
a representative value compensating part which compensates the luminance representative value based on the compensation control signal to generate a compensated luminance representative value;
a pixel correcting part which corrects pixel data of the image signal based on the compensated luminance representative value to generate corrected pixel data;
and
a light source driving part which drives the light-emitting block based on a luminance level of the light-emitting block corresponding to the compensated luminance representative value;
and
a display unit including a display panel and a panel driving part which drives the display panel using the corrected pixel data.
22 Jul 2032Estimated · howhide20 years from earliest known nonprovisional domestic filing plus recorded patent term adjustment, including 944 days of adjustment. Maintenance-fee lapses, terminal disclaimers and statutory extensions have not been checked. The continuity chain may be incomplete; this is not an enforceability determination.
Arrangements or circuits for control of indicating devices using static means to
Life of this patent
About 5 years 9 months of term left · ends 22 Jul 2032 (estimated)
Priority, Korea3 Mar 2009
Filed21 Dec 2009
Granted5 Aug 2014
Today12 Oct 2026
Term ends22 Jul 2032
Priority, Korea3 Mar 2009
Granted5 Aug 2014
Term ends22 Jul 2032
Priority claimedKR 10-2009-0017975
Application filedUS 12/643,062
Assigned to Samsung Electronics Co., Ltd.assignment of assignor's interest
PublishedUS 2010/0225674 A1
Assigned to Samsung Display Co., Ltd.assignment of assignor's interest
GrantedUS 8,797,366 B2
TodayWithin its term
Term endsEstimated, includes 944 days of adjustment
Description11,342 words
Summary2,514 words
#This application claims priority to Korean Patent Application No. 2009-17975, filed on Mar. 3, 2009, and all the benefits accruing therefrom under 35 U.S.C. §119, the content of which in its entirety is herein incorporated by reference.
#The present invention relates to a method of driving a light source, a light source apparatus for performing the method and a display apparatus having the light source apparatus. More particularly, the present invention relates to a method of driving a light source which substantially improves a display quality, a light source apparatus for performing the method, and a display apparatus having the light source apparatus.
Brief description of the drawings9 figures
#The above and other aspects, advantages and features of the present invention will become more apparent by describing in further detail exemplary embodiments thereof with reference to the accompanying drawings, in which:
#FIG. 1 is a perspective view of an exemplary embodiment of a display apparatus according to the present invention;
#FIG. 2 is a block diagram of the display apparatus shown in FIG. 1;
Detailed description8,589 words
#The invention now will be described more fully hereinafter with reference to the accompanying drawings, in which various embodiments are shown. This invention may, however, be embodied in many different forms, and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Like reference numerals refer to like elements throughout.
#It will be understood that when an element is referred to as being “on” another element, it can be directly on the other element or intervening elements may be present therebetween. In contrast, when an element is referred to as being “directly on” another element, there are no intervening elements present. As used herein, the term “and/or” includes any and all combinations of one or more of the associated listed items.
#It will be understood that, although the terms first, second, third etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the present invention.