TW201826250A - Display apparatus and display parameter adjustment method thereof - Google Patents

Abstract

A display apparatus and a display parameter adjustment method thereof are provided. The display apparatus includes a display panel, a picture adjustment circuit, an eye tracking circuit and a processing circuit. The picture adjustment circuit controls the display panel to display a picture. The eye tracking circuit captures at least one eye to obtain sight-line position information, wherein the sight-line position information is used to indicate a position viewed by the eye. The processing circuit can determine an attention position viewed by the eye in the display panel according to the sight-line position information. The processing circuit issue a local adjustment command to the picture adjustment circuit, so as to adjust at least one display parameter of a partial region including the attention position in the picture and to maintain the at least one display parameter of the other region in the picture.

Description

Display device and display parameter adjustment method thereof

The present invention relates to an electronic device, and more particularly to a display device and a display parameter adjustment method thereof.

Display devices (such as mobile phones or tablets) can provide multimedia and other images for viewing by users. When the user operates the display device, the external environment affects the quality of the user viewing the screen. For example, ambient light may make it difficult for the user to see the image displayed by the display device.

The present invention provides a display device and a display parameter adjustment method thereof for dynamically adjusting display parameters of a partial picture (a local area of interest to the eye) and maintaining (without changing) display parameters of other areas in the picture.

Embodiments of the present invention provide a display device. The display device includes a display panel, a picture adjustment circuit, an eye tracking circuit, and a processing circuit. The picture adjustment circuit is coupled to the display panel. The picture adjustment circuit can control the display panel to display the picture. The eye tracking circuit is configured to capture at least one eye to obtain line of sight position information, wherein the line of sight position information is used to indicate a position viewed by the eye. The processing circuit is coupled to the eye tracking circuit and the picture adjustment circuit. Based on the line-of-sight position information, the processing circuit can determine the position of interest of the eye in the display panel. The processing circuit may issue a local adjustment command to the picture adjustment circuit to adjust at least one display parameter of the local area including the location of interest in the picture, and maintain the at least one display parameter of other areas in the picture.

Another embodiment of the present invention provides a display parameter adjustment method of a display device. The display parameter adjustment method comprises: controlling the display panel to display the screen by the screen adjustment circuit; and capturing at least one eye by the eye tracking circuit to obtain the line of sight position information, wherein the line of sight position information is used to indicate the position viewed by the eye; The circuit determines the attention position of the eye viewed in the display panel according to the line of sight position information; and the local adjustment command is sent by the processing circuit to the picture adjustment circuit to adjust at least one display parameter of the local area including the attention position in the picture, And maintaining the at least one display parameter of other areas in the picture.

Based on the above, the display device according to the embodiment of the present invention can track the line of sight of the eye to obtain the position of interest that the eye views in the display panel. The processing circuit can dynamically adjust the display parameters of the local area (partial picture) including the position of interest in the picture, and maintain (without changing) the display parameters of other areas in the picture.

The above described features and advantages of the invention will be apparent from the following description.

The term "coupled (or connected)" as used throughout the specification (including the scope of the claims) may be used in any direct or indirect connection. For example, if the first device is described as being coupled (or connected) to the second device, it should be construed that the first device can be directly connected to the second device, or the first device can be A connection means is indirectly connected to the second device. In addition, wherever possible, the elements and/ Elements/components/steps that use the same reference numbers or use the same terms in different embodiments may refer to the related description.

FIG. 1 is a schematic diagram of a circuit block of a display device 100 in accordance with an embodiment of the invention. The display device 100 includes a display panel 110, a screen adjustment circuit 120, a processing circuit 130, and an eye tracking circuit 140. The picture adjustment circuit 120 is coupled to the display panel 110. The picture adjustment circuit 120 can control the display panel 110 to display a picture. Therefore, the user's eyes 11 can view the screen displayed by the display panel 110. The line of sight 12 shown in FIG. 1 indicates that the eye 11 is viewing the display panel 110. According to design/application requirements, the display device 100 can be a mobile phone, a tablet computer, a head mounted display, a video wall, an advertising billboard, a vending machine, or other display device.

For example, FIG. 2 is a schematic diagram showing an application scenario of the display device 100 (or the display device 500 shown in FIG. 5) of FIG. 1 according to an embodiment of the invention. In the embodiment shown in FIG. 2, display device 100 (or display device 500) can be implemented as a head mounted virtual reality display. The display device 100 (or the display device 500) can be worn on the head of the user 10. The eyes 11 of the user 10 can view the screen displayed by the display panel 110 of the display device 100 (or the display device 500). The line of sight 12 shown in FIG. 2 indicates that the eye 11 is viewing a partial area 111 of the display panel 110. FIG. 2 does not depict a lens group between the eye 11 and the display panel 110.

For example, FIG. 3 is a schematic diagram showing an application scenario of the display device 100 (or the display device 500 shown in FIG. 5) of FIG. 1 according to another embodiment of the present invention. In the embodiment shown in FIG. 3, display device 100 (or display device 500) can be implemented as a video wall, an advertising billboard, a vending machine, or other device having a large display panel. The eyes 11 of the user 10 can view the screen displayed by the display panel 110 of the display device 100 (or the display device 500). The line of sight 12 shown in FIG. 3 indicates that the eye 11 is viewing a partial area 111 of the display panel 110.

FIG. 4 is a flow chart showing a method for adjusting display parameters of the display device 100 (or the display device 500) according to an embodiment of the invention. Please refer to FIG. 1 , FIG. 2 and FIG. 4 , or FIG. 1 , FIG. 3 and FIG. 4 . In step S410, the screen adjustment circuit 120 may control the display panel 110 to display a screen for viewing by the user 10. Eye tracking circuit 140 has a camera/camera. In step S420, the eye tracking circuit 140 may capture at least one eye 11 of the user 10 to obtain the line-of-sight position information 141. The line of sight position information 141 is used to indicate the position viewed by the eye 11. Eye tracking circuitry 140 may use any algorithm, such as a conventional eye tracking algorithm, to track the location viewed by eye 11.

The processing circuit 130 is coupled to the eye tracking circuit 140 and the picture adjustment circuit 120. In step S430, based on the line-of-sight position information 141, the processing circuit 130 can determine the attention position 112 that the eye 11 views in the display panel 110. The processing circuit 130 can use any algorithm (eg, a conventional algorithm) to determine the location of interest that the eye 11 is viewing in the display panel 110. In step S440, the processing circuit 130 may issue a local adjustment command to the picture adjustment circuit 120 to adjust at least one display parameter of the local area 111 including the attention position 112 in the picture, and maintain the at least one of the other areas in the picture. A display parameter. The display parameters may include contrast, color density, pixel brightness, backlight brightness, sharpness, or other display parameters, depending on design/application requirements.

For example, but not limited to, when the user operates the display device 100 (or the display device 500), the screen adjustment circuit 120 can set the overall sharpness (display parameter) of the screen of the display panel 110 to be the first Sharpness value. The eye tracking function of the display device 100 (or the display device 500) can be turned on. When the eye tracking function is turned on, the eye tracking circuit 140 can capture at least one eye 11 of the user 10 to obtain the line of sight position information 141. When the eye 11 of the user 10 views the picture presented by the display panel 110, the processing circuit 130 can determine the attention position 112 viewed by the eye 11 in the display panel 110 according to the line-of-sight position information 141. In step S440, the processing circuit 130 may increase the sharpness (display parameter) of the local region 111 including the attention position 112 in the screen from the first sharpness value to the second sharpness value, and will be in the picture. The sharpness (display parameter) of the other regions is maintained at the first sharpness value. After the eye 11 no longer views the local area 111 (ie, the line of sight 12 leaves the partial area 111), the processing circuit 130 may adjust the sharpness (display parameter) of the local area 111 from the second sharpness value to the first A sharpness value.

For another example, when the user operates the display device 100 (or the display device 500), the screen adjustment circuit 120 can set the overall brightness (display parameter) of the screen of the display panel 110 to the first brightness value (for example, 50%). ). When the eye tracking function is turned on, the eye tracking circuit 140 can capture at least one eye 11 of the user 10 to obtain the line of sight position information 141. When the eye 11 of the user 10 views the picture presented by the display panel 110, the processing circuit 130 can determine the attention position 112 viewed by the eye 11 in the display panel 110 according to the line-of-sight position information 141. In step S440, the processing circuit 130 may increase the brightness (display parameter) of the local area 111 including the position of interest 112 in the picture from the first brightness value to the second brightness value (eg, 100%), and will The brightness (display parameter) of other areas in the picture is maintained at the first brightness value. After the eye 11 no longer views the partial area 111 (ie, the line of sight 12 leaves the partial area 111), the processing circuit 130 may adjust the brightness (display parameter) of the local area 111 from the second brightness value to the first brightness. value.

This embodiment does not limit the manner in which the local area 111 is defined. According to design requirements, in some embodiments, the picture presented by the display panel 110 may be divided into a plurality of areas, and the processing circuit 130 may select an area including the attention position 112 from the areas as the partial area 111. . In other embodiments, processing circuit 130 defines the local area 111 centered on the location of interest 112. For example, a horizontal distance is extended from the attention position 112 to the left and right in the horizontal direction, and a vertical distance is extended from the attention position 112 in the vertical direction, and the partial area 111 is defined. The horizontal distance and the vertical distance may be determined according to design requirements.

FIG. 5 is a circuit block diagram of a display device 500 in accordance with another embodiment of the present invention. The display device 500 includes a display panel 110, a screen adjustment circuit 120, a processing circuit 130, an eye tracking circuit 140, and an environment detecting circuit 150. According to design/application requirements, the display device 500 can be a mobile phone, a tablet computer, a head mounted display, a video wall, an advertising billboard, a vending machine, or other device having a display function. The display panel 110, the screen adjustment circuit 120, the processing circuit 130, and the eye tracking circuit 140 shown in FIG. 5 can be analogized with reference to the related descriptions of FIGS. 1 to 4, and thus will not be described again.

The environment detecting circuit 150 can detect the physical quantity of the environment of the display device 500. According to design requirements, the physical quantity includes ambient light, temperature, humidity or other physical quantity, and the environment detecting circuit 150 may include a photo sensor, a temperature sensor, a humidity sensor, an acceleration sensor or other sensors. . The processing circuit 130 is coupled to the environment detecting circuit 150 to receive the sensing result. Based on the physical quantity detected by the environment detecting circuit 150, the processing circuit 130 issues an overall adjustment command to the picture adjusting circuit 130 to adjust at least one display parameter of the entire screen. For example, but not limited to, according to the ambient brightness (physical quantity) detected by the environment detecting circuit 150, the processing circuit 130 sends an overall adjustment command to the picture adjusting circuit 130 to dynamically adjust the picture presented by the display panel 110. The overall brightness (display parameters).

FIG. 6 is a flow chart showing a method of adjusting display parameters of the display device 500 according to another embodiment of the present invention. Please refer to FIG. 3, FIG. 5 and FIG. Steps S410, S420, S430, and S440 shown in FIG. 6 can be analogized with reference to the related description of FIG. 4, and therefore will not be described again. After step S410, the processing circuit 130 may proceed to step S610 to determine whether the user 10 touches the screen (display panel 110). When the processing circuit 130 determines that the user 10 touches the screen (the display panel 110), the processing circuit 130 may proceed to step S620 to determine whether the user 10 continues to operate the screen (the display panel 110). When the processing circuit 130 determines that the user 10 continues to operate the screen (the display panel 110), the processing circuit 130 may perform step S630 to detect the physical quantity (eg, ambient brightness) of the environment of the display device 500 through the environment detecting circuit 150. Based on the physical quantity detected by the environment detecting circuit 150, the processing circuit 130 issues an overall adjustment command to the screen adjusting circuit 130 in step S640 to adjust the display parameters of the overall screen. After step S640 is completed, steps S420, S430, and S440 may be performed.

For example, according to the ambient brightness detected by the environment detecting circuit 150, the processing circuit 130 issues an overall adjustment command to the screen adjusting circuit 130 in step S640 to dynamically adjust the brightness (display parameter) of the overall screen to the first Brightness value (for example 50%). The eye tracking circuit 140 can capture the eyes 11 of the user 10 to obtain the line-of-sight position information 141 (step S420). When the eye 11 of the user 10 views the screen presented by the display panel 110, the processing circuit 130 can determine the attention position 112 viewed by the eye 11 in the display panel 110 according to the line-of-sight position information 141 (step S430). In step S440, the processing circuit 130 may increase the brightness (display parameter) of the local area 111 including the attention position 112 in the screen from the first brightness value (for example, 50%) to the second brightness value (for example, 100%). And maintaining the brightness (display parameter) of other areas in the picture at the first brightness value. After the eye 11 no longer views the partial area 111 (ie, the line of sight 12 leaves the partial area 111), the processing circuit 130 may adjust the brightness (display parameter) of the local area 111 from the second brightness value to the first brightness. value.

It should be noted that in different application scenarios, the related functions of the picture adjustment circuit 120, the processing circuit 130, and/or the eye tracking circuit 140 may utilize a general programming language (such as C or C++), a hardware description. The language (hardware description languages, such as Verilog HDL or VHDL) or other suitable programming language is implemented as software, firmware or hardware. The programming language that can perform the related functions can be arranged as any known computer-accessible media, such as magnetic tapes, semiconductors, magnetic disks, or optical disks. (compact disks, such as CD-ROM or DVD-ROM), or the programming language can be transmitted over the Internet, wired communication, wireless communication, or other communication medium. The programming language can be stored in an accessible medium of the computer such that the programming code of the programming language is accessed/executed by a processor of the computer. Additionally, the apparatus and method of the present invention can be implemented by a combination of hardware and software.

In summary, the display device 100 or the display device 500 according to the embodiments of the present invention can track the line of sight 12 of the eye 11 to obtain the position of interest 112 viewed by the eye 11 in the display panel 110. The processing circuit 130 can dynamically adjust the display parameters of the partial region (partial screen) 111 including the position of interest 112 in the screen, and maintain (without changing) the display parameters of other regions in the screen. For example, the ambient light may make the user not see the picture presented by the display panel 110, so the processing circuit 130 can dynamically increase the brightness of the local area (partial picture) 111 (to allow the user 10 to see clearly). The screen presented by the panel 110 is displayed), and the brightness of other areas in the screen is maintained (without changing) to save power consumption of the display panel 110.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and any one of ordinary skill in the art can make some changes and refinements without departing from the spirit and scope of the present invention. The scope of the invention is defined by the scope of the appended claims.

10‧‧‧Users

11‧‧‧ eyes

12‧‧ Sight

100, 500‧‧‧ display devices

110‧‧‧ display panel

111‧‧‧Local area

112‧‧‧Focus on location

120‧‧‧ Picture adjustment circuit

130‧‧‧Processing Circuit

140‧‧‧ Eye tracking circuit

141‧‧ Sight position information

150‧‧‧Environmental detection circuit

S410~S440, S610~S640‧‧‧ steps

1 is a schematic diagram of a circuit block of a display device in accordance with an embodiment of the invention. 2 is a schematic diagram showing an application scenario of a display device in accordance with an embodiment of the present invention. 3 is a schematic diagram showing an application scenario of a display device in accordance with another embodiment of the present invention. FIG. 4 is a flow chart showing a method for adjusting display parameters of a display device according to an embodiment of the invention. FIG. 5 is a circuit block diagram of a display device in accordance with another embodiment of the present invention. FIG. 6 is a flow chart showing a method of adjusting display parameters of a display device according to another embodiment of the present invention.

Claims (12)

A display device includes: a display panel; a picture adjustment circuit coupled to the display panel for controlling the display panel to display a picture; an eye tracking circuit for capturing at least one eye to obtain a line of sight position Information, wherein the line of sight position information is used to indicate the position viewed by the eye; and a processing circuit coupled to the eye tracking circuit and the picture adjustment circuit for determining that the eye is viewed according to the line of sight position information a focus position in the display panel, and a partial adjustment command is sent to the screen adjustment circuit to adjust at least one display parameter of the local area including the attention position in the screen, and is maintained in other areas in the screen. The at least one display parameter. The display device of claim 1, wherein the at least one display parameter comprises contrast, color density, pixel brightness, backlight brightness or sharpness. The display device according to claim 1, wherein the screen is divided into a plurality of regions, and the processing circuit selects, from the regions, an area including the attention position as the partial region. The display device according to claim 1, wherein the processing circuit defines the partial region centering on the position of interest. The display device of claim 1, further comprising: an environment detecting circuit for detecting a physical quantity of the environment of the display device; wherein the processing circuit sends an overall adjustment command to the screen according to the physical quantity Adjusting the circuit to adjust the at least one display parameter of the entirety of the picture. The display device of claim 5, wherein the physical quantity comprises ambient light, temperature or humidity. A display parameter adjustment method for a display device includes: controlling a display panel to display a screen by a screen adjustment circuit; and capturing at least one eye by an eye tracking circuit to obtain a line of sight position information, wherein the line of sight position information is used to indicate a position viewed by the eye; determining, by a processing circuit, a position of interest viewed by the eye in the display panel according to the line of sight position information; and transmitting, by the processing circuit, a partial adjustment command to the screen adjustment circuit to adjust At least one display parameter of a partial area of the location of interest is included in the picture, and the at least one display parameter of other areas in the picture is maintained. The display parameter adjustment method of claim 7, wherein the at least one display parameter comprises contrast, color density, pixel brightness, backlight brightness or sharpness. The display parameter adjustment method of claim 7, wherein the screen is divided into a plurality of regions, and the display parameter adjustment method further comprises: selecting, by the processing circuit, the location of interest from the regions One area of the area is the local area. The display parameter adjustment method according to claim 7, further comprising: defining, by the processing circuit, the local area centering on the attention position. The display parameter adjustment method of claim 7, further comprising: detecting, by an environment detecting circuit, a physical quantity of the environment of the display device; and issuing, by the processing circuit, an overall adjustment command according to the physical quantity A picture adjustment circuit adjusts the at least one display parameter of the entire screen. The display parameter adjustment method of claim 11, wherein the physical quantity comprises ambient light, temperature or humidity.