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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, color signal processing circuits, cathode ray tube indicators, etc., to achieve the effect of suppressing brightness decline

Active Publication Date: 2021-11-02
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 of a standard dynamic range, that is, an SDR (standard dynamic range) signal (first image signal), but also an image signal whose dynamic range of brightness is larger than that of 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 Associ...

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 gray scale 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 gradation value, Figure 6 (b) is a graph showing a...

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 displays an image of an HDR signal in which brightness reduction caused by white balance adjustment is suppressed while suppressing color deviation of the image of the SDR signal. A television (1) displaying an image whose white balance has been adjusted includes: a discrimination unit (12), which discriminates whether the image signal is an HDR signal or an SDR signal; The gain for at least one of the primary colors is changed to a value higher than the set 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 Patents(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