Display device comprising a light source

A display device (DD) comprises a light source (LS); a display panel (DP) with display pixels for modulating light originating from the light source (LS); and processing circuitry (P) coupled to the display panel (DP) and the light source (LS). The processing circuitry (P) has an input for receiving...

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Bibliographic Details
Main Author STESSEN JEROEN H. C. J.,DEMCHENKO MAKSYM
Format Patent
LanguageEnglish
Published 09.05.2007
Subjects
ADVERTISING
ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICESUSING STATIC MEANS TO PRESENT VARIABLE INFORMATION
CRYPTOGRAPHY
DISPLAY
EDUCATION
PHYSICS
SEALS
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Summary:A display device (DD) comprises a light source (LS); a display panel (DP) with display pixels for modulating light originating from the light source (LS); and processing circuitry (P) coupled to the display panel (DP) and the light source (LS). The processing circuitry (P) has an input for receiving an input signal (V 1 ) representing gray levels of pixels of an image to be displayed on the display panel (DP) and comprises: an amplifier (A) for amplifying the input signal (V 1 ) to provide an output signal (V 2 ) for driving the display pixels, a detector (S) for detecting whether within a part of the image a property of the output signal (V 2 ), and-control circuitry (CM) for controlling a gain of the amplifier (A) and a brightness level of the light source (LS) in dependence on the property. The property may be that a first number of pixels of the output signal (V 2 ) exceed a first predetermined number, wherein the first number of pixels is the number of pixels having a gray level exceeding a first predetermined gray level.
Bibliography:Application Number: CN200580017987