US-12626669-B2 - Processing system for simultaneously presenting brightness performance of different areas on a single display screen

US12626669B2US 12626669 B2US12626669 B2US 12626669B2US-12626669-B2

Abstract

A processing system for simultaneously presenting brightness performance of different areas on a single display screen includes: a detection processor and a control processor. The detection processor performs a multi-point photometry of a pre-imaging area to find out the difference in ambient light intensity distribution among the points on the display screen after a display device is installed, where the pre-imaging area refers to an area of a display device set up or projected for viewing. The control processor connected to the detection processor for correspondingly cutting a screen range of the display device into multiple modulation areas based on the ambient light intensity difference of the pre-imaging area. In this way, the display screen can be adjusted to adapt to various environments with differences in brightness or position.

Inventors

Yi-Yu Tsai
Shao-Wei Chiu
Yin-Cheng Huang

Assignees

STARLIGHT DISPLAY CORPORATION

Dates

Publication Date: 20260512
Application Date: 20250630
Priority Date: 20230626

Claims (2)

1 . A processing system for simultaneously presenting brightness performance of different areas on a single display screen, comprising: a detection processor, for finding a direct view range of a driver position and a direct view range of a front passenger position for a pre-imaging area of a display device installed in a car; and a control processor, telecommunicatively coupled to the detection processor, the control processor dynamically cuts a screen range of the display device along a Y-axis into a first modulation area corresponding to a direct view range of a driver position and a second modulation area corresponding to a direct view range of a front passenger position according to the direct view range of the driver position and the direct view range of the front passenger position in the pre-imaging area, wherein the control processor adjusts one or a combination of an output of a current value and an output of a Gamma value for the first modulation area and the second modulation area, such that the first modulation area has a first brightness display performance, and the second modulation area has a second brightness display performance different from the first brightness display performance.
2 . The processing system according to claim 1 , wherein the first brightness display performance has an adjustable brightness range greater than an adjustable brightness range of the second brightness display performance.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This application is a divisional patent application of U.S. application Ser. No. 18/740,536 filed on Jun. 12, 2024, the entire contents of which are hereby incorporated by reference for which priority is claimed under 35 U.S.C. § 120. BACKGROUND OF THE DISCLOSURE Technical Field The present disclosure relates to the technical field of display brightness adjustment in general, and more particularly relates to a processing system for simultaneously presenting brightness performance of different areas on a single display screen, which is provided for adjusting a display screen of a single display device according to different degrees of visual light intensity in various fields, environments, time and installation locations and conditions, so as to achieve better screen brightness performance and viewing in visual applications of naked views. Description of the Related Art For now, display devices are well-developed electronic products, and their most direct function is to display information on screen for viewing. However, inappropriate brightness of the screen will affect people's viewing. In general, the brightness of a display device is measured in nits, and the brightness of a common display device is usually between 200 nits and 350 nits, although the exact value may vary depending on the manufacturer and model of the display device. As for high-brightness display devices, they are usually designed with a brightness exceeding 350 nits, and some of these display devices are suitable for use in bright environments such as outdoors or places with strong backlight. In addition, high dynamic display range (HDR) display devices have higher brightness capabilities, even exceeding 1000 nits or more, and the high brightness level is conducive to the presentation of a wider range of brightness in order to provide a more realistic image. On the other hand, some display devices are designed with local dimming technology to improve the contrast and black performance of the display device and provide better image quality, in addition to the basic brightness design. Specifically, the local backlight control adjusts the brightness of the backlight to different areas according to the image content. For example, when a part of the image needs to display deep black, its brightness in the corresponding backlight area can be reduced to enhance the black performance. Similarly, when bright white or high-brightness areas need to be displayed, its brightness in the corresponding backlight area can be increased to provide better brightness performance. In other words, the local backlight control depends on the backlight brightness adjustment to different areas in the content of image, thus enhancing the contrast of the image. This means that the black color presented in the image content will appear deeper and the white color brighter, increasing the difference between the darkest black color and the brightest white color and making the overall image content more vivid and close to the real-world perception, especially in dark scenes where the backlight can be reduced to show more screen details. However, in order to adapt the brightness of a single display device to factors such as different fields or environments, even if there is an adjustment function, the display device screen has different light receiving levels, and currently there is no area division in the single display device for adjusting brightness for better display effect. As for the aforementioned local backlight control makes adjustment according to the content information of the image in order to increase screen contrast and detail performance. In other words, this adjustment can be interpreted as “active” change according to the content of the image information; however, “passive” change according to the degree of light sensitivity after exposure to light is not currently available. If the same brightness is used for presenting the display, the overall screen will be too bright or too dark which cannot be adapted to both the upper and lower half display areas. For example, in-vehicle display devices or head-up display device screens are gradually becoming larger in size for drivers to view more easily. However, due to the limited space in the car, there may be a visual problem that the perceived ambient light intensity is insufficient in the lower half of the display screen in the car, but the upper half area of the display screen is relatively brighter. If the display is presented with the same brightness, the overall screen will be too bright or too dark, making it impossible to adapt to the upper and lower display areas. On the other hand, diversified specifications and configurations are also required for display devices in different fields. For example, the display screen may change from the basic aspect ratio 1:1 or 3:2 to 16:9, It is not difficult to imagine the emergence of special applications with narrower and l