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Display device, television receiver, display method, control program, and recording medium

A display device and display control technology, applied to static indicators, cathode ray tube indicators, color signal processing circuits, etc., to achieve the effect of suppressing brightness decline

Active Publication Date: 2018-11-23
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In general, there are individual differences in the white balance of images displayed by display devices

Method used

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  • Display device, television receiver, display method, control program, and recording medium
  • Display device, television receiver, display method, control program, and recording medium
  • Display device, television receiver, display method, control program, and recording medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0025] Below, use Figure 1 to Figure 5 Embodiments of the present invention will be described in detail.

[0026] (TV receiver 1)

[0027] figure 1 It is a block diagram showing the configuration of main parts of the television receiver (display device) 1 according to the first embodiment. The television receiver 1 (hereinafter simply referred to as "television 1") acquires not only an image signal with a standard dynamic range, that is, an SDR (standard dynamic range) signal (first image signal), but also an acquired dynamic range of luminance that is larger than the SDR signal. HDR (High Dynamic Range) signal (second image signal), and can display an image corresponding to the image signal.

[0028] Standards for HDR signals include, for example, video formats specified by SMPTE (Society of Motion Picture and Television Engineers: Society of Motion Picture and Television Engineers) ST.2084-2014, CTA (Consumer Technology Association: Consumer Technology Association)-861-F...

Embodiment approach 2

[0072] Other embodiments of the present invention will be described below. In addition, for the convenience of description, the same reference numerals are attached to the components having the same functions as those described in the above-mentioned embodiments, and their descriptions are omitted. In the second embodiment, use Figure 6 A configuration in which the user sets the predetermined gray scale value L in Embodiment 1 will be described. In addition, in this embodiment, the configuration in which the user sets the predetermined grayscale value L is described, but a configuration in which the user can individually set the grayscale value L1 to the grayscale value L4 may be used.

[0073] Figure 6 It is a diagram showing a configuration in which a user can set a predetermined gradation value in the second embodiment. Figure 6 (a) is a diagram showing an example of a menu screen for the user to set a predetermined gray scale value, Figure 6 (b) is a graph showing ...

Embodiment approach 3

[0078] Hereinafter, still another embodiment of the present invention will be described. In addition, for the sake of convenience of description, the same reference numerals are attached to the components having the same functions as the components described in the above-mentioned embodiments, and the description thereof will be omitted. In the third embodiment, use Figure 7 A configuration in which the user sets a gain value of a gradation value higher than the predetermined gradation value L in Embodiment 1 will be described. In addition, in the present embodiment, a configuration is described in which the user sets the gain values ​​for green (G) and blue (B), which are primary colors other than red (R), which has a fixed gain value, but the user can also set the gain values ​​individually. The gain values ​​for green (G) and blue (B) are set accordingly.

[0079] Figure 7 It is a diagram showing a configuration in which the user can set a gain value of a grayscale val...

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Abstract

The present invention suppresses variation in the color of SDR signal images and displays HDR signal images for which reductions in luminance due to white balance adjustment have been suppressed. According to the present invention, a television (1) that displays images that have been adjusted for white balance comprises: a determination unit (12) that determines whether image signals are HDR signals or SDR signals; and a display control unit (14) that, when it has been determined that image signals are HDR signals, alters the gain for at least one primary color to a value that is higher than aset value.

Description

technical field [0001] The present invention relates to a display device for displaying an image with adjusted white balance, a television receiver including the display device, a display method for causing the display device to display an image, a control program for causing a computer to function as the display device, and A recording medium on which the control program is recorded. Background technique [0002] In general, there are individual differences in the white balance of images displayed by a display device. Therefore, white balance adjustment is performed in the process of manufacturing the display device. On the other hand, since the adjustment of the white balance is accompanied by a reduction in brightness, a technique for suppressing the reduction in brightness has been sought. [0003] For example, Patent Document 1 describes a white balance adjustment method in which the convergence point of the display color included in the target range is set so that th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N9/73G09G5/00G09G5/02H04N9/77
CPCH04N9/73G09G5/02G09G5/10G09G2320/0666G09G2340/0428H04N9/77G09G5/00
Inventor 神田贵史
Owner SHARP KK