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Display apparatus and control method thereof

A display device and display panel technology, which is applied to static indicators, cathode ray tube indicators, televisions, etc., can solve the problems of unclear images and inconvenience for users to watch images, etc.

Inactive Publication Date: 2011-06-29
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0008] However, in the display device of the related art, if the contrast of the video is low, since the image displayed on the display part is unclear, it is inconvenient for the user to view the image.

Method used

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  • Display apparatus and control method thereof
  • Display apparatus and control method thereof
  • Display apparatus and control method thereof

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Embodiment Construction

[0032] Specific reference will now be made to exemplary embodiments of the invention, examples of which are illustrated in the accompanying drawings.

[0033] As shown in FIG. 1, a display device according to an exemplary embodiment of the present invention includes a display module 70, a signal input module 10, a signal conversion module 30, a signal processing module 50, and a control module 90 for controlling these components.

[0034] The display module 70 includes: a display panel 77 on which images are displayed; and panel drivers 71 , 73 and 75 for processing video signals input from the signal processing module 50 and displaying images on the display panel 77 . Here, the display panel 77 is preferably, but not necessarily, a plasma display panel (PDP).

[0035] The PDP display panel 77 includes a plurality of address electrodes A1 to Am arranged in a column direction, and a plurality of X electrodes X1 to Xn and Y electrodes Y1 to Yn arranged alternately in a row direc...

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Abstract

A method and apparatus are provided for adjusting the contrast ratio in a display apparatus. The display apparatus includes a signal input module which receives a video signal and a signal processing module which processes the video signal received from the signal input module. A display module has a display panel and a panel driver for driving the display panel, and a controlling module calculates the luminance of the video signal and controls at least one of the signal processing module and the panel driver to adjust a contrast ratio of the video signal output to the display panel based on the mean of the calculated luminance.

Description

technical field [0001] The method and device of the invention relate to a display device with adjustable video signal contrast and a control method thereof. Background technique [0002] In general, a display device receives a video signal of a specific display mode input from a video signal source such as a computer or a TV broadcasting system, and displays the received video signal on a display portion. Display devices such as flat panel display devices using liquid crystal display (LCD) panels, plasma display panels (PDP) and display devices using cathode ray tubes (CRT) have been widely used. [0003] A display device using a PDP is highly appreciated because it has a higher image quality than a CRT and a thinner thickness than an LCD. [0004] Generally, a PDP display device displays video according to an Addressing and Display Separation (ADS) driving system in which a data writing time is separated from a data displaying time. In such a PDP display device, when a vo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G5/10G09G5/00H04N5/57G09G3/288G09G3/294
CPCG09G5/10G09G3/2944G09G2320/0271G09G2320/0673G09G2330/021G09G2360/16H04N5/57
Inventor 罗弘柱朴吉寿张成桓
Owner SAMSUNG ELECTRONICS CO LTD
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