Video display device, television receiver and storage medium

A video display and video technology, which is applied in the direction of TV, color TV, color TV parts, etc., can solve the problem of multiplication and reduce the psychological burden

Active Publication Date: 2021-03-30
SHARP KK
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, in video-related technologies, high-brightness display such as HDR is possible, and there are many opportunities for the viewer's perception of brightness to change significantly for each content.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Video display device, television receiver and storage medium
  • Video display device, television receiver and storage medium
  • Video display device, television receiver and storage medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0037] (display device)

[0038] refer to figure 1 as well as figure 2 The display device 1 including the video processing device 20 according to the first embodiment will be described. figure 1 It is a block diagram showing the configuration of the display device 1 including the video processing device 20 according to the present embodiment. In addition, FIG. 2 is a front view showing the appearance of the display device 1. As shown in FIG. Such as figure 1 As shown, the display device 1 includes: a display panel 10 , a receiving unit 11 and a video processing device 20 . In addition, the display device 1 may be configured to include a tuner, and may be implemented as a television receiver. In addition, the display device may also be called a video display device.

[0039] (Video processing device)

[0040] The video processing device 20 is a device that sequentially outputs a plurality of frames constituting a video by decoding the video signal received by the receiv...

example 1

[0080] (Example 1: Calculation method using MaxFALL)

[0081] In this example, the calculation unit 23 calculates the maximum frame average brightness MaxFALL (Maximum Frame Average Light Level) from the acquired video data, and sets the calculated MaxFALL as the perceived brightness value. Here, MaxFALL refers to the maximum value of the average luminance in all the frames constituting the video, and the algorithm is defined in accordance with CEA861.3. Figure 6 Pseudocode for calculating MaxFALL is shown.

[0082] Such as Figure 6As shown, the calculation unit 23 converts (R', G', B') which is a non-linear pixel value into cd / m 2 Linear brightness value (R, G, B) in units of (candela per square meter). And the maximum value among (R, G, B) is set as the maximum brightness value maxRGB of the pixel.

[0083] Also, the calculation unit 23 sets the average of the maximum luminance values ​​maxRGB of all pixels included in the effective image area as the average luminanc...

example 2

[0086] (Example 2: How to exclude black screens and white screens)

[0087] When all frames included in the video sequence include a frame having a white screen (a screen whose average luminance is equal to or greater than the threshold value Wt (Bk

[0088] In this example, the calculation unit 23 calculates Perceived brightness value. By using this example for the calculation of the perceived brightness value, it is possible to calculate a more appropriate perceived brightness value.

[0089] FIG. 7 shows a pseudo code for the calculation unit 23 to calculate the perceptual luminance value according to this example. As shown in FIG. 7 , the calculation unit 23 calculates the linear luminance value Y (linear luminance value) of the pixel according to a pixel included in the active image area (active image area) of a cer...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

A technology of preventing feeling of a viewer on brightness from significantly changing when content is switched is provided. A video display device (1) includes a calculation unit (23) that calculates video feature relating to a display video, and a mute video display unit that displays a mute video posterior to a first display video, in which luminance of the mute video is luminance corresponding to a value of the video feature relating to the first display video.

Description

technical field [0001] The present invention relates to a video display device, a television receiver, a transmitting device, a control program, and a storage medium. Background technique [0002] Among technologies related to sound, there is known a technology that uses loudness, which is the magnitude of sound perceived by humans, to equalize the audience's perception of the magnitude of sound for each content. In addition, in video-related technologies, high-brightness display such as HDR is possible, and there are many opportunities for the viewer's perception of brightness to change significantly for each content. [0003] prior art literature [0004] patent documents [0005] Patent document 1: Japanese laid-open patent publication "Japanese Patent Laid-Open No. 2009-27550 (published on February 5, 2009)" Contents of the invention [0006] Technical problem to be solved by the present invention [0007] If the viewer's perception of brightness varies greatly for...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/38H04N7/035H04N5/57H04N7/025H04N17/00H04N7/00
CPCH04N5/57H04N5/38H04N7/007H04N7/0255H04N7/035H04N17/004
Inventor 樱井凉二铃木秀树西垣智夫吉山和良柴本尚昭手塚靖
Owner SHARP KK
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap