CN113253958A - Computer system and display control method thereof - Google Patents
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
- G06F3/1423—Digital output to display device ; Cooperation and interconnection of the display device with other functional units controlling a plurality of local displays, e.g. CRT and flat panel display
- G06F3/1446—Digital output to display device ; Cooperation and interconnection of the display device with other functional units controlling a plurality of local displays, e.g. CRT and flat panel display display composed of modules, e.g. video walls
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
- G06F3/1407—General aspects irrespective of display type, e.g. determination of decimal point position, display with fixed or driving decimal point, suppression of non-significant zeros
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
- G06F3/1423—Digital output to display device ; Cooperation and interconnection of the display device with other functional units controlling a plurality of local displays, e.g. CRT and flat panel display
- G06F3/1431—Digital output to display device ; Cooperation and interconnection of the display device with other functional units controlling a plurality of local displays, e.g. CRT and flat panel display using a single graphics controller
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Abstract
The invention provides a computer system and a display control method thereof. In the method, the display capabilities of two or more displays are obtained, and the display settings of the displays are modified according to the display capabilities of the displays in response to the displays operating in an extended desktop mode, so that the difference between the point per inch setting and the frame update rate setting of the displays is reduced. The display capability is related to the dot per inch information and the frame rate information supported by the display. The display settings include a point per inch setting and a screen update rate setting. Therefore, the visual experience on the multi-display can be improved.
Description
Technical Field
The present invention relates to a multi-display application technology, and more particularly, to a computer system for multi-display and a display control method thereof.
Background
Whether for leisure or work, more and more users have a need to use multiple displays (or screens) simultaneously. For example, a notebook computer is externally connected with one display, or a desktop computer is externally connected with two displays. Most operating systems provide an extended desktop mode to allow users to view more information at the same time. However, when the specifications of the displays corresponding to the main desktop and the extended desktop are different, the display will be different, and further the visual discomfort of the user will be increased.
Disclosure of Invention
In view of this, the present invention provides a computer system and a display control method thereof, which reduce the difference between the display settings on different displays to provide better user experience.
The display control method is suitable for at least two displays to run in an extended desktop mode. The display control method includes, but is not limited to, the following steps: the display capability of the displays is obtained, and the display setting of the displays is modified according to the display capability of the displays in response to the displays running in the extended desktop mode, so that the difference between the dot Per Inch setting (Dots Per inc, DPI) and the screen update rate setting of the displays is reduced. The display capability is related to the dot per inch information and the frame rate information supported by the display. The display settings include a point per inch setting and a screen update rate setting.
The computer system of the present invention includes, but is not limited to, at least two displays, a memory, and a processor. The memory is used for storing a plurality of modules. The processor is electrically connected with the display and the memory. The processor loads and executes the modules stored in the memory. Those modules include a display setting module. The display setting module obtains the display capabilities of the displays, and modifies the display settings of the displays according to the display capabilities of the displays in response to the displays operating in an extended desktop mode, so that the difference between the point per inch setting and the screen update rate setting of the displays is reduced. The display capability is related to the dot per inch information and the frame rate information supported by the display. The display settings include a point per inch setting and a screen update rate setting.
Based on the above, the computer system and the display control method thereof according to the embodiments of the invention properly adjust the settings such as the number of dots per inch and the frame update rate for the usage situation in the extended desktop mode, so as to synchronize the settings of different displays and reduce the difference. Therefore, the visual experience of a user watching the display can be improved.
In order to make the aforementioned and other features and advantages of the invention more comprehensible, embodiments accompanied with figures are described in detail below.
Drawings
FIG. 1 is a block diagram of components of a computer system according to an embodiment of the invention.
FIG. 2 is a flowchart illustrating a display control method according to an embodiment of the invention.
FIG. 3 is a flowchart illustrating an interactive display according to an embodiment of the invention.
FIG. 4 is a diagram of a synchronous display according to an embodiment of the invention.
FIG. 5 is a flow chart of cursor position control according to one embodiment of the invention.
FIG. 6 is a diagram illustrating an example of cursor position modification.
Wherein:
100: a computer system;
110. 111, 112, 113, 114, 115, 117: a display;
130: a memory;
131: a display setting module;
133: an interactive control module;
135: a cursor control module;
150: a processor;
s210 to S230, S310 to S360, S510 to S550: a step of;
APP: an application program;
w: a window;
c: a cursor;
e: a boundary.
Detailed Description
FIG. 1 is a block diagram of a computer system 100 according to an embodiment of the invention. Referring to FIG. 1, the computer system 100 includes, but is not limited to, at least two displays 110, a memory 130, and a processor 150. The computer system 100 may be an electronic device such as a desktop computer, a notebook computer, a server, a smart phone, and a tablet computer.
The display 110 may be a Liquid Crystal Display (LCD), a Light Emitting Diode (LED) display, an Organic Light Emitting Diode (OLED) display, or other type of display, or various types of projectors. In one embodiment, the display 110 is used for displaying images. It should be noted that the display 110 may be embedded in or externally connected to the main body of the computer system 100, and the embodiment of the invention is not limited thereto. For example, a built-in display and an external display of a notebook computer, or an external display of a desktop computer.
The Memory 130 may be any type of fixed or removable Random Access Memory (RAM), Read-Only Memory (ROM), Flash Memory (Flash Memory), Hard Disk Drive (HDD), Solid State Drive (SSD), or the like, or any combination thereof. In the embodiment of the present invention, the memory 130 is used for storing temporary or permanent data (e.g., display capability, display setting, rights management list, information content, etc.), software modules (e.g., display setting module 131, interaction control module 133, cursor control module 135, etc.), or other files and data, and the details thereof will be described in the following embodiments.
The Processor 150 is electrically connected to the display 110 and the memory 130, and the Processor 150 may be a Central Processing Unit (CPU) or a Graphics Processing Unit (GPU), or other programmable general purpose or special purpose Microprocessor (Microprocessor), Digital Signal Processor (DSP), programmable controller, Application-Specific Integrated Circuit (ASIC), or other similar devices or combinations thereof. In the embodiment of the invention, the processor 150 is used for executing all or most of the operations of the computer system 100, can load and execute the software modules, files and data recorded in the memory 130, and can display the pictures on any display 110.
In one embodiment, the processor 150 further includes an interface bridge (bridge) chip to control the contents of the display 110. The interface bridge chip is used to process a bridge between the video signal and the display 110. The source audio/video signal can be output and displayed on the display 110 through the interface bridge chip, and the interface bridge chip can be connected to multiple output devices such as a screen or a projector. With the aid of the interface bridge chip (AUX), the display capability (e.g., resolution, size, brightness, etc., as will be described in detail later) of the electrically connected display 110 can be searched, and the display output signal can be adjusted accordingly.
It should be noted that, the processor 150 and the display 110 may be connected by a wired or wireless manner, and the embodiment of the present invention is not limited thereto.
To facilitate understanding of the operation flow of the embodiment of the present invention, the flow of controlling the display and the content in the extended desktop mode according to the embodiment of the present invention will be described in detail below with reference to a plurality of embodiments. The method of the present invention will be described with reference to various components and modules in the computer system 100. The various processes of the method may be adapted according to the implementation, and are not limited thereto.
FIG. 2 is a flowchart illustrating a display control method according to an embodiment of the invention. Referring to fig. 2, the display setting module 131 obtains the display capabilities of the displays 110 respectively (step S210). In particular, the display capabilities may be point per inch (DPI) information, picture update rate information, screen size, resolution, and/or brightness information that are supported by the display 110. DPI information is related to the size, resolution, and scaling of the display 110. The display setting module 131 can obtain the display capability of the display 110 through an Application Program Interface (API) of Win32 or other commands, for example. For example, an "EnumDisplaySettings" or "GetMonitorCapabilities" function may take the modes supported by the display 110 (i.e., with respect to display capabilities).
Then, in response to (detecting) that the connected displays 110 operate in the extended desktop mode, the display setting module 131 may modify the display settings of the displays according to the respective display capabilities of the displays 110 (step S230). Specifically, the display setting module 131 may derive the current display setting of the display 110 through, for example, a Win32 API or other instructions. The display setting may be a DPI setting, a screen update rate setting, a brightness setting, a cursor movement speed, or other settings. For example, the "getsystemetrics" function can obtain the width and height of the current display resolution, the "GetDeviceCaps" function can obtain the width, height or DPI (corresponding to the scaling) of the display 110, the "getmontiorbright" function can obtain the current brightness of the display 110, and the "enum displaysettings" function can also obtain the current resolution, screen update rate, and other settings.
Then, if it is detected that the two or more displays 110 are connected (assuming that the desktop mode is preset as the extended desktop mode), or the extended desktop mode is set by a user or other triggering actions, the display setting module 131 may compare the difference between the current display settings of the displays 110, and change the display settings of the displays 110 based on the display capabilities of the displays 110, so that the difference between the DPI setting, the screen update rate setting, the brightness setting, the cursor movement speed, and/or other display settings of the displays 110 is reduced (e.g., the display settings are consistent, or the difference between the display settings is smaller than a certain threshold value).
For example, the DPI settings may be uniform so that the font or pattern size is approximately the same for different displays 110. For another example, one display 110 may support a 120 hertz (Hz) frame rate, another display 110 may support a 90Hz frame rate, and the display setting module 131 may set both displays 110 to 60Hz or 90Hz frame rates (e.g., via the ChangeDisplaySettings function). For another example, when one display 110 is currently at the maximum brightness and the other display 110 is currently at the minimum brightness, the display setting module 131 may set both displays 110 to the medium brightness or the maximum brightness. For another example, the size and resolution of the display may affect the moving speed of the cursor (the larger the size and resolution is, the slower the moving speed may be), and the display setting module 131 may dynamically change the moving speed of the cursor for the three displays according to the current resolution or the scaling, so as to make the moving speed of the cursor consistent.
It should be noted that the aforementioned API is only illustrated by way of example using the Windows system, and other APIs may be used by other operating systems.
In addition to the display settings described above with respect to the specification of the display 110, embodiments of the present invention can also provide display-related rights management. Specifically, in the extended desktop mode, one display 110 is defined as a main screen (or main desktop), and the other displays 110 are defined as extended screens (or extended desktops). The interactive control module 133 may allow displaying of corresponding windows, shortcuts, user interfaces, or information content for applications and settings interfaces on one or more of the displays 110, but disable corresponding windows, shortcuts, user interfaces, or information/service content for portions of the applications or settings interfaces displayed on other displays 110. Therefore, the main screen can control the system to execute all application programs and settings, but the extended screen only has partial authority, and the operable range on the extended screen is also controlled by the operation on the main screen. The interactive control module 133 may determine the allowed content for the different displays 110 based on the rights management list (which may be predefined or available for modification).
For example, in a locker-bound service environment (e.g., an interactive environment such as a bank, a home office, etc.), a business server (operating a main screen) interacts with a client (operating an extended screen). In the prior art, in order to provide different services for different customers, a business server may need to switch different extended screens to complete different services. In embodiments of the present invention, in order to allow clients to better focus on unfamiliar desktop environments, the required applications are only displayed for their particular services on their extended desktop. Due to the difference of each service, the number of applications required to be displayed on different extended desktops will be different. In this case, the display setting of the extended screen desktop can be adjusted in a consistent manner according to the actual requirements, such as the DPI and the screen update rate.
In addition, the display settings may also be related to interactive applications on different displays. In the prior art, for a display position of a dual-screen application, a window of the application is displayed on a main screen when the window is opened for the first time. If the window is moved to the extended desktop and closed under the extended desktop, the window will be opened on the extended desktop after the same application is opened next time. The embodiment of the invention can aim at the business server (operation main screen) and the client (operation extended screen) to perform automatic alternate display and focus switching so as to avoid displaying confidential information on the client (operation extended screen).
In one embodiment, in response to detecting an input operation (e.g., receiving an operation such as a key press, a mouse movement, or a click touch through an input device such as a keyboard, a mouse, a touch panel, etc.) on a first user interface (e.g., a desktop or an application window) displayed on one display 110, the interactive control module 133 may switch focus to a second user interface displayed on another display 110. In focus, the interactive control module 133 allows input operations by the user or allows display of information content. On the other hand, if not in focus, the interactive control module 133 disables the input operation of the user or allows the display of the information content. For example, the operation behavior received by the touch panel on the extended screen will be ignored. As another example, the extended screen presents waiting information.
For example, fig. 3 is a flowchart illustrating an interactive display according to an embodiment of the invention. Referring to FIG. 3, it is assumed that the computer system 100 includes two displays 111,113, wherein the display 111 is set as a main screen and the display 113 is set as an extended screen. First, the display 111 gets the focus (marked by asterisk in the figure), and the shortcut of the application APP is selected on the display 111 (step S310). The interactive control module 133 switches the focus to the display 113, and the APP presents the data input interface on the display 113 and waits for receiving the input operation of the client (step S320). After the client finishes inputting the data and presses the virtual button "OK", the interactive control module 133 switches the focus to the display 111 (step S330). The service provider can process the data based on the data inputted by the client, and the content of the application APP is not displayed on the display 113 (step S340). If the service provider finishes processing the data and presses the virtual button "OK", the interactive control module 133 switches the focus to the display 113 to notify the client that the processing of the information is finished, and the content of the application APP can be displayed on the display 113 (step S350). Finally, after the client confirms and presses the virtual button "OK", the interactive control module 133 switches the focus to the display 111, i.e. the content of the application APP is closed on both displays 111,113 (step S360).
In another embodiment, the interactive control module 133 may also display the frames displayed by other displays 110 on one display 110 in a window. For example, FIG. 4 is a schematic diagram of a synchronous display according to an embodiment of the invention. Referring to FIG. 4, it is assumed that the computer system 100 includes two displays 112,114, wherein the display 112 is configured as a main screen and the display 114 is configured as an extended screen. A window W is presented on display 112, and the content in window W is the content displayed by display 114. Thus, the business service provider can clearly understand the operation behavior of the client on the display 114.
It should be noted that fig. 4 only illustrates two displays 110, but not limited thereto. In other embodiments, the display 110 that is the main screen may display content displayed by other displays 110 that are extended screens through one or more viewports.
In addition, the display setting is more related to the cursor position. The resolutions of the displays 110 may be inconsistent such that the cursor may not cross the boundary between the frames displayed by the displays 110. For example, if one display 110 has a resolution of 720P and another display 110 has a resolution of 1080P, the cursor may not be able to cross over from some boundary position on the 1080P resolution display 110 to the 720P display 110.
In one embodiment, the cursor control module 135 may modify the cursor position after the cursor crosses the boundary between the two displays 110 according to the DPI information of the displays and the arrangement of the displays in the extended desktop mode. FIG. 5 is a flow chart of cursor position control according to one embodiment of the invention. Referring to fig. 5, the cursor control module 135 may obtain the resolution, the current cursor position (e.g., the "GetCursorPos" function), and the arrangement (or screen configuration) of the display 110 by using an API (e.g., the "GetCursorPos" function) or an instruction.
For example, FIG. 6 is a diagram illustrating an example of cursor position modification. Referring to fig. 6, it is assumed that the resolution of the display 115 is 1920 × 1080 and the resolution of the display 117 is 3840 × 2160. The displays 115,117 are arranged side-by-side with the top side flush. In the related art, the cursor C on the screen of the display 117 cannot cross the boundary (e.g., the partial boundary e shown in the drawing) corresponding to the resolution difference to the screen of the display 115 to the left of the figure. However, the cursor C may cross the boundary from the screen of the display 115 to the left of the figure to the screen displayed by the display 117. It can be seen that moving the cursor from the higher resolution display to the lower resolution display can be problematic.
In one embodiment, the cursor control module 135 may determine whether the cursor position moves to another display 110. Taking FIG. 6 as an example, the X coordinate in the (X, Y) coordinates is decreased from 1921 to 1920 or the X coordinate is increased from 1920 to 1921, i.e., the cursor position crosses the boundary (i.e., moves to another display 110).
After the cursor control module 135 determines that the cursor position moves to another display 110 (step S510), the cursor control module 135 determines whether the cursor moves from the lower resolution display 110 to the higher resolution display 110 (step S520) or from the higher resolution display 110 to the lower resolution display 110 (step S540). The cursor control module 135 may identify a moving direction or a moving trajectory from the cursor position. It should be noted that, in other embodiments, the execution order of step S520 and step S540 may be reversed or executed simultaneously.
In one embodiment, the cursor control module 135 modifies the value corresponding to the cursor position, and the modified value corresponding to the cursor position is scaled down or enlarged according to the resolution of the display 110. Taking FIG. 6 as an example, if the cursor C is moved from the display 115 (the lower resolution display 110) to the display 117 (the higher resolution display 110), the cursor control module 135 may increase the value of the Y coordinate (i.e., the coordinate on the vertical axis crossing the direction (e.g., the X-axis direction)) (step S530). For example, the ratio of the height (adjacent sides perpendicular to the crossing direction) of the resolutions of the displays 115 and 117 is 1080:2160, and the product of the Y coordinate and the height ratio (the ratio 2160/1080 greater than 1 is selected for increasing the value) can be used as the Y coordinate of the modified cursor position.
On the other hand, if the cursor C is moved from the display 117 (the higher resolution display 110) to the display 115 (the lower resolution display 110), the cursor control module 135 may decrease the value of the Y coordinate (i.e., the coordinate on the vertical axis across the direction) (step S550). For example, the product of the Y coordinate and the high ratio (ratio 1080/2160 less than 1 is selected because the value is to be decreased) may be used as the Y coordinate of the modified cursor position.
It should be noted that, in other embodiments, the cursor control module 135 may modify the X coordinate according to the aspect ratio of the resolutions of the two displays 110 (for example, the arrangement mode in the extended desktop mode is top-bottom arrangement, and the crossing direction is parallel to the arrangement direction of the displays 110).
In addition, the display 110 may be arranged without the boundary being adjacent (for example, the arrangement is diagonal), and the cursor control module 135 may directly shift the value of the coordinate perpendicular to the crossing direction. For example, if the cursor is moved horizontally from the higher-ranked display 110 to the lower-ranked display 110, the value of the Y coordinate is first vertically shifted to the boundary of the lower-ranked display 110 (e.g., the number of pixels between the value of the Y coordinate and the resolution of the lower-ranked display 110 is higher) and then modified based on the high ratio. For another example, if the cursor is moved horizontally from the lower display 110 to the higher display 110, the value of the Y coordinate is vertically shifted to the boundary of the higher display 110 (e.g., the value of the Y coordinate plus the number of pixels with higher resolution of the lower display 110) and then modified based on the high ratio.
In summary, in the computer system and the display control method thereof according to the embodiment of the invention, for the extended desktop mode, the display settings (e.g., DPI setting, screen update rate, brightness, mouse movement speed, focus determination, display authority management and/or cursor position adjustment) of the display can be respectively adjusted based on the display capability of the display. Therefore, the visual discomfort of the user between screen switching can be improved, and a user interface which is convenient for interaction between a business service person and a client can be provided.
Although the present invention has been described with reference to the above embodiments, it should be understood that various changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the invention.
Claims (11)
1. A display control method is suitable for at least two displays to run in an extended desktop mode, and comprises the following steps:
obtaining display capabilities of the at least two displays, wherein the display capabilities are related to a point per inch information and a frame update rate information supported by the at least two displays; and
modifying display settings of the at least two displays according to display capabilities of the at least two displays in response to the at least two displays operating in the extended desktop mode, wherein the display settings include a point per inch setting and a screen update rate setting, and a difference between the point per inch setting and the screen update rate setting of the at least two displays is reduced;
wherein the at least two displays include a first display and a second display.
2. The method as claimed in claim 1, wherein the display setting further comprises a cursor movement speed, and the step of modifying the display setting of the at least two displays further comprises:
and modifying the cursor moving speed of the at least two displays according to the point per inch information of the at least two displays.
3. The display control method according to claim 1, further comprising:
in response to detecting an input operation on a first user interface displayed on the first display, switching a focus to a second user interface displayed on the second display, wherein the input operation is allowed or the display of information content is allowed at the focus.
4. The display control method according to claim 1, further comprising:
allowing a plurality of application programs and a plurality of setting interfaces to be displayed on the first display; and
disabling displaying of a portion of the applications or a portion of the settings interfaces on the second display.
5. The display control method according to claim 1, further comprising:
and displaying the picture displayed on the second display by a window on the first display.
6. The display control method of claim 1, wherein the display settings further include a cursor position, the method further comprising:
modifying a cursor position after a cursor crosses a boundary between the first display and the second display according to resolutions corresponding to the point per inch information of the at least two displays and an arrangement mode of the at least two displays in the extended desktop mode, wherein a numerical value corresponding to the modified cursor position is reduced or enlarged according to a scale of the resolutions corresponding to the first display and the second display.
7. A computer system, comprising:
at least two displays including a first display and a second display;
a storage device for storing a plurality of modules; and
a processor electrically connected to the at least two displays and the memory, and loading and executing the modules stored in the memory, wherein the modules include:
a display setting module, which obtains the display capability of the at least two displays, and modifies the display setting of the at least two displays according to the display capability of the at least two displays when the at least two displays operate in an extended desktop mode, wherein the display capability is related to a point per inch information and a picture update rate information supported by the at least two displays, the display setting comprises a point per inch setting and a picture update rate setting, and the difference between the point per inch setting and the picture update rate setting of the at least two displays is reduced.
8. The computer system of claim 7, wherein the modules further comprise:
an interactive control module, responsive to detecting an input operation on a first user interface displayed on the first display, switches a focus to a second user interface displayed on the second display, wherein the input operation is allowed or information content is allowed to be displayed at the focus.
9. The computer system of claim 7, wherein the modules further comprise:
and the interactive control module allows a plurality of application programs and a plurality of setting interfaces to be displayed on the first display, and forbids partial application programs or partial setting interfaces to be displayed on the second display.
10. The computer system of claim 7, wherein the modules further comprise:
and the interactive control module is used for displaying the picture displayed on the second display by a window on the first display.
11. The computer system of claim 7, wherein the display settings further include a cursor position, and the modules further comprise:
and a cursor control module, which modifies the cursor position after a cursor crosses the boundary between the first display and the second display according to the resolution corresponding to the point per inch information of the at least two displays and the arrangement mode of the at least two displays in the extended desktop mode, wherein a numerical value corresponding to the modified cursor position is reduced or enlarged according to the proportion of the resolution corresponding to the first display and the second display.
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