DISPLAY DEVICE AND CONTROL METHOD OF DISPLAY DEVICE

PROBLEM TO BE SOLVED: To secure a real time property without increasing throughput in a display device implementing a local dimming control, and to improve an image quality of an area where an image change occurs.SOLUTION: A display device comprises: control means that implements computation process...

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1. Verfasser:	KAGAYA MUNEAKI
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	ADVERTISING ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICESUSING STATIC MEANS TO PRESENT VARIABLE INFORMATION BLASTING CRYPTOGRAPHY DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING DISPLAY EDUCATION FREQUENCY-CHANGING HEATING LIGHTING MECHANICAL ENGINEERING NON-LINEAR OPTICS NON-PORTABLE LIGHTING DEVICES OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL LOGIC ELEMENTS OPTICS PHYSICS SEALS SYSTEMS THEREOF TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLEEXTERIORS WEAPONS
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Zusammenfassung:	PROBLEM TO BE SOLVED: To secure a real time property without increasing throughput in a display device implementing a local dimming control, and to improve an image quality of an area where an image change occurs.SOLUTION: A display device comprises: control means that implements computation processing for determining light emission luminance on the basis of image data for each light emitting unit with one or more light sources as one light emitting unit, and causes the light emitting unit to emit light at the light emission luminance determined by the computation processing; detection means that compares data on first image displayed with a current frame and data on a second image to be displayed with a next frame, and detects a change part where there is a change relative to the first image in the second image; determination means that determines a computation target area targeted for implementing the computation processing of the light emission luminance relative to the frame of the second image so as to contain all light sources corresponding to the change part; and setting means that sets how a plurality of light sources in the computation target area is split into the light emission unit in accordance with a total quantity of light sources contained in the computation target area.SELECTED DRAWING: Figure 3 【課題】ローカルディミング制御を行う表示装置において、処理量を増やすことなくリアルタイム性を確保しつつ、画像変化があった領域の画質を向上させる。【解決手段】１つ以上の光源を１つの発光単位として、発光単位毎に画像データに基づき発光輝度を決定する演算処理を行い、各発光単位を前記演算処理によって決定された発光輝度で発光させる制御手段と、現在のフレームで表示している第１画像のデータと、次のフレームで表示する第２画像のデータとを比較して、前記第２画像のなかで前記第１画像に対して変化があった変化部分を検出する検出手段と、前記変化部分に対応する全ての光源を含むように、前記第２画像のフレームに対し発光輝度の演算処理を行う対象となる演算対象領域を決定する決定手段と、前記演算対象領域内に含まれる光源の総数に応じて、前記演算対象領域内の複数の光源をどのように発光単位に分けるかを設定する設定手段と、を備える。【選択図】図３