CN110895918B - Resolution adjustment method and system - Google Patents
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- CN110895918B CN110895918B CN201910501173.4A CN201910501173A CN110895918B CN 110895918 B CN110895918 B CN 110895918B CN 201910501173 A CN201910501173 A CN 201910501173A CN 110895918 B CN110895918 B CN 110895918B
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- 238000010586 diagram Methods 0.000 description 5
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/36—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the display of a graphic pattern, e.g. using an all-points-addressable [APA] memory
- G09G5/39—Control of the bit-mapped memory
- G09G5/391—Resolution modifying circuits, e.g. variable screen formats
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2340/00—Aspects of display data processing
- G09G2340/04—Changes in size, position or resolution of an image
- G09G2340/0407—Resolution change, inclusive of the use of different resolutions for different screen areas
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Abstract
The invention provides a resolution adjustment method and a system thereof. The method comprises the following steps: determining a target resolution of the display; according to the target resolution of the display, determining initial driving information corresponding to the target resolution, wherein the initial driving information comprises an initial pixel clock frequency; acquiring a reference pixel clock frequency group executable by a display, wherein the reference pixel clock frequency group comprises at least two pixel clock frequencies executable by the display; determining a pixel clock frequency closest to the initial pixel clock frequency in the reference pixel clock frequency group, and taking the closest pixel clock frequency as the reference pixel clock frequency; adjusting the initial driving information to make the adjusted pixel clock frequency the same as the reference pixel clock frequency, and taking the adjusted driving information as final driving information; and writing the final drive information into a registry so that the display displays the image corresponding to the target resolution on full screen.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a resolution adjustment method and system.
Background
At present, in the fields of rail transit and aerospace, various display screens with special resolutions need to be used, and the special resolutions are resolutions which can not be set by common display screens. However, in the case of graphics card drives installed in industrial control computers, these special resolutions are not available in most cases, and when the special resolution is required, it is necessary to perform the setting by some means.
The existing mode for setting the special resolution is mainly that a chip manufacturer provides a display card driver with a custom resolution option for setting, but the function of the custom resolution is only provided for part of chips; in addition, the existing method for self-defining the resolution can only display special resolution options, but can not display the full screen, so that the screen has black edges, the display effect is influenced, and the requirements of a user are not met.
Disclosure of Invention
According to the resolution adjusting method and the resolution adjusting system, the initial driving information corresponding to the target resolution can be adjusted, and the adjusted driving information is written into the registry of the corresponding display, so that the display which does not support the target resolution can support the target resolution according to the adjusted driving information, namely, options corresponding to the target resolution are provided, and the display can display the image corresponding to the target resolution on a full screen.
In a first aspect, the present invention provides a resolution adjustment method, including:
determining a target resolution of the display;
determining initial driving information corresponding to a target resolution according to the target resolution of a display, wherein the initial driving information is information for driving the display under the target resolution, and the initial driving information comprises an initial pixel clock frequency;
acquiring a reference pixel clock frequency set executable by the display, wherein the reference pixel clock frequency set comprises at least two pixel clock frequencies executable by the display;
determining a pixel clock frequency closest to the initial pixel clock frequency in the reference pixel clock frequency group, and taking the closest pixel clock frequency as a reference pixel clock frequency;
adjusting the initial driving information according to the reference pixel clock frequency to enable the adjusted pixel clock frequency to be the same as the reference pixel clock frequency, and taking the adjusted driving information as final driving information;
and writing the final driving information into a registry so that the display displays the image corresponding to the target resolution on a full screen.
Optionally, the initial driving information further includes: row sum time, refresh rate, and field sum time;
the adjusting the initial driving information includes: adjusting the initial pixel clock frequency by adjusting the row sum time, refresh rate, and field sum time.
Optionally, the initial driving information further includes: line sum time;
the adjusting the initial driving information includes: adjusting the initial pixel clock frequency by adjusting the row sum time.
Optionally, the step of adjusting the initial pixel clock frequency by adjusting the line sum time comprises: adjusting the initial pixel clock frequency according to the reference pixel clock frequency, the field sum time in the initial driving information, and the refresh rate in the initial driving information.
Optionally, the step of writing the final drive information into a registry includes:
converting the final driving information into corresponding detailed timing description;
writing the corresponding detailed timing description to a registry.
In a second aspect, the present invention provides a resolution adjustment system, comprising:
a first determination module configured to determine a target resolution of a display;
a second determining module, configured to determine initial driving information corresponding to a target resolution of a display according to the target resolution, where the initial driving information is information for driving the display at the target resolution, and the initial driving information includes an initial pixel clock frequency;
an obtaining module configured to obtain a set of reference pixel clock frequencies executable by the display, the set of reference pixel clock frequencies including at least two pixel clock frequencies executable by the display;
a third determining module configured to determine, among the set of reference pixel clock frequencies, a pixel clock frequency closest to the initial pixel clock frequency and to use the closest pixel clock frequency as a reference pixel clock frequency;
an adjusting module configured to adjust the initial driving information according to the reference pixel clock frequency so that the adjusted pixel clock frequency is the same as the reference pixel clock frequency, and to use the adjusted driving information as final driving information;
and the writing module is configured to write the final driving information into a registry so that the display displays the image corresponding to the target resolution in a full screen mode.
Optionally, the initial driving information further includes: row sum time, refresh rate, and field sum time;
the adjusting module is further configured to adjust the initial pixel clock frequency by adjusting the row sum time, refresh rate, and field sum time.
Optionally, the initial driving information further includes: line sum time. The adjustment module further configured to adjust the initial pixel clock frequency by adjusting the row sum time.
Optionally, the adjusting module is further configured to adjust the initial pixel clock frequency according to the reference pixel clock frequency, the field sum time in the initial driving information, and the refresh rate in the initial driving information.
Optionally, the writing module includes:
a translation submodule configured to translate the final drive information into a corresponding detailed timing description.
A write submodule configured to write the corresponding detailed timing description into a registry.
According to the resolution adjusting method and the resolution adjusting system provided by the embodiment of the invention, the initial driving information corresponding to the target resolution can be adjusted, and the adjusted driving information is written into the registry of the corresponding display, so that the display which does not support the target resolution can support the target resolution according to the adjusted driving information, namely, the option corresponding to the target resolution is provided, and the display can display the image corresponding to the target resolution in a full screen.
Drawings
Fig. 1 is a schematic flow chart of a resolution adjustment method according to an embodiment of the present application;
FIG. 2 is a schematic flow chart diagram of a resolution adjustment method according to an embodiment of the present application;
FIG. 3 is a row timing diagram of a VGA of an embodiment of the present application;
fig. 4 is a schematic structural diagram of a resolution adjustment system according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
First, the noun terms to which the present invention relates are explained.
Modeline: the configuration lines in the configuration file, information for driving the computer display at a specified display resolution, include pixel clock frequency, resolution, and related parameters.
In a first aspect, the present invention provides a resolution adjustment method, and referring to fig. 1, fig. 1 shows a schematic flow chart of a resolution adjustment method according to an embodiment of the present application, the method includes the following steps:
step S101: a target resolution of the display is determined.
And taking the resolution provided by the required display as a target resolution according to the resolution provided by the required display. The target resolution is initially a particular resolution not supported by the display.
Step S102: according to the target resolution of the display, determining initial driving information corresponding to the target resolution, wherein the initial driving information is information for driving the display under the target resolution, and the initial driving information comprises an initial pixel clock frequency.
The initial driving information is a Modeline corresponding to the target resolution, and includes parameters such as an initial pixel clock frequency. Specifically, the corresponding Modeline can be calculated according to the target resolution by using the existing open source software. Existing open source software such as umc (universal model calculator).
Step S103: and acquiring a reference pixel clock frequency set executable by the display, wherein the reference pixel clock frequency set comprises at least two pixel clock frequencies executable by the display.
Displays provided by vendors are generally capable of supporting multiple pixel resolutions, i.e., displays capable of performing multiple pixel clock frequencies (pixels per second).
Step S104: and in the reference pixel clock frequency group, determining the pixel clock frequency closest to the initial pixel clock frequency, and taking the closest pixel clock frequency as the reference pixel clock frequency.
Specifically, the pixel clock frequency executable by the display is subtracted from the initial pixel clock frequency, and a difference value corresponding to the pixel clock frequency executable by the display is obtained; and determining the difference value with the minimum absolute value, and taking the pixel clock frequency which can be executed by the display and corresponds to the difference value with the minimum absolute value as the reference pixel clock frequency.
Step S105: and adjusting the initial driving information according to the reference pixel clock frequency to enable the adjusted pixel clock frequency to be the same as the reference pixel clock frequency, and taking the adjusted driving information as final driving information.
By adjusting the pixel clock frequency in the initial driving information, the difference value between the pixel clock frequency in the adjusted initial driving information and the reference pixel clock frequency is the same, so that the display can display the image corresponding to the target resolution on a full screen while supporting the target resolution.
Step S106: and writing the final driving information into a registry so that the display displays the image corresponding to the target resolution on a full screen.
After the final drive information is written into the registry, the target resolution option is available to the display by restarting the host connected to the display, even if the display supports the target resolution.
In the invention, under the condition that the target resolution is not supported by the display, the method can support the target resolution according to the adjusted driving information by adjusting the initial driving information corresponding to the target resolution and writing the adjusted driving information into the registry of the corresponding display, namely, the display can provide the option corresponding to the target resolution and can display the image corresponding to the target resolution on the full screen.
In a second aspect, the present invention provides a resolution adjustment method, and referring to fig. 2, fig. 2 shows a schematic flow chart of a resolution adjustment method according to an embodiment of the present application, the method includes the following steps:
step S201: a target resolution of the display is determined.
Step S202: according to the target resolution of the display, determining initial driving information corresponding to the target resolution, wherein the initial driving information is information for driving the display under the target resolution, and the initial driving information comprises an initial pixel clock frequency.
Step S203: and acquiring a reference pixel clock frequency set executable by the display, wherein the reference pixel clock frequency set comprises at least two pixel clock frequencies executable by the display.
Step S204: and in the reference pixel clock frequency group, determining the pixel clock frequency closest to the initial pixel clock frequency, and taking the closest pixel clock frequency as the reference pixel clock frequency.
Step S205: and adjusting the line sum time in the initial driving information according to the reference pixel clock frequency so that the adjusted line sum time and the line sum time corresponding to the reference pixel clock frequency are within an allowable error range, and taking the adjusted driving information as final driving information.
By adjusting the line sum time in the initial driving information, the pixel clock frequency corresponding to the adjusted target resolution is the same as the reference pixel clock frequency, so that the black screen phenomenon can be avoided under the condition that the display displays at the target resolution. The specific error range is determined by the parameters set by the manufacturer on the display.
Step S206: and writing the final driving information into a registry so that the display displays the image corresponding to the target resolution on a full screen.
In the invention, under the condition that the target resolution is not supported by the display, the pixel clock frequency corresponding to the target resolution is adjusted to be the same as the reference pixel clock frequency by adjusting the line sum time in the initial driving information, namely under the condition that the adjusted line sum time in the initial driving information is close to the line sum time corresponding to the reference pixel clock frequency, the display can support the target resolution and simultaneously can display the image corresponding to the target resolution on the display in a full screen mode.
In an optional embodiment, the initial driving information further includes: row sum time, refresh rate, and field sum time. Specifically, the line total Time is a line scanning Time (Hor scan Time); the field sum Time is the field scan Time (Ver scan Time). Referring to fig. 3, fig. 3 illustrates a row timing diagram of a VGA (Video Graphics Array) according to an embodiment of the present application. Wherein the row sum (Htotal, Hor total, Horizontal total) includes: line synchronization (Hor Sync), line blanking (Hor Back Porch), line Video Active (Hor Active Video), and line Front shoulder (Hor Front Porch); the field sum (Vtotal, Vertical total) includes: vertical Sync (Ver Sync), Vertical Back Port (Ver Back Port), Vertical Video Active (Ver Active Video), and Vertical Front shoulder (Ver Front Port).
In an alternative embodiment, the line sum time is the sum of the line synchronization time, the line blanking time, the line video active time, and the line shoulder time; the field sum time is the sum of the field sync time, the field blanking time, the field video active time, and the field shoulder time.
The adjusting the initial driving information includes: adjusting the initial pixel clock frequency by adjusting the row sum time, refresh rate, and field sum time.
pixel clock＝Htotal×Vtotal×R (1)
Equation (1) shows a calculation equation of the pixel clock frequency. Wherein, pixel clock is the pixel clock frequency; htotal is the row sum time; vtotal is the field sum time; r is the refresh rate of the display, i.e. the number of times the electron beam repeatedly scans the image on the screen. According to formula (1): the corresponding pixel clock frequency can be changed by changing the row sum time, the refresh rate, and the field sum time. However, considering that in practice the refresh rate of the display is generally a default fixed value, and modifying the refresh rate increases the display risk of the display, in an alternative embodiment, the initial pixel clock frequency is adjusted by adjusting the row sum time and the field sum time.
In an optional embodiment, the initial driving information further includes: line sum time. The adjusting the initial driving information includes: adjusting the initial pixel clock frequency by adjusting the row sum time.
Since the range of adjustment allowed by the row sum time is greater than the range of adjustment allowed by the field sum time and the refresh rate, in an alternative embodiment, the initial pixel clock frequency is preferably adjusted by adjusting the row sum time. The specific method for adjusting the line sum time corresponding to the initial pixel clock is to adjust the line sum time to be close to the line sum time corresponding to the reference pixel clock frequency, and the specific close range is determined by the parameters set by the manufacturer on the display.
In an alternative embodiment, the step of adjusting the initial pixel clock frequency by adjusting the row sum time comprises: adjusting the initial pixel clock frequency according to the reference pixel clock frequency, the field sum time in the initial driving information, and the refresh rate in the initial driving information.
Equation (2) shows a calculation formula of the line sum time. Wherein,HT1' is the adjusted line sum time corresponding to the target resolution; p0Is the reference pixel clock frequency; VT1Field sum time corresponding to target resolution; r1The refresh rate corresponding to the target resolution is obtained. According to the formula (2): the value to which the row sum time corresponding to the target resolution needs to be adjusted can be determined by determining the reference pixel clock frequency, the field sum time corresponding to the target resolution, and the refresh rate corresponding to the target resolution.
In an alternative embodiment, the writing the final driving information into the registry comprises:
translating the final drive information into a corresponding detailed timing description.
Specifically, the final driving information is converted into DTD (detail timing description) according to VESA (Video Electronics Standards Association) standard.
Writing the corresponding detailed timing description to a registry.
After the final drive information is written into the registry, the target resolution option is available to the display by restarting the host connected to the display, even if the display supports the target resolution.
In a third aspect, the present invention provides a resolution adjustment system 400, and referring to fig. 4, fig. 4 is a schematic structural diagram of a resolution adjustment system according to an embodiment of the present application, where the resolution adjustment system 400 includes:
a first determination module 401 configured to determine a target resolution of the display.
A second determining module 402, configured to determine initial driving information corresponding to a target resolution of a display according to the target resolution, where the initial driving information is information for driving the display at the target resolution, and the initial driving information includes an initial pixel clock frequency.
An obtaining module 403 configured to obtain the set of display-executable reference pixel clock frequencies, where the set of reference pixel clock frequencies includes at least two display-executable pixel clock frequencies.
A third determining module 404 configured to determine a pixel clock frequency closest to the initial pixel clock frequency among the set of reference pixel clock frequencies, and to use the closest pixel clock frequency as a reference pixel clock frequency.
An adjusting module 405 configured to adjust the initial driving information according to the reference pixel clock frequency so that the adjusted pixel clock frequency is the same as the reference pixel clock frequency, and take the adjusted driving information as final driving information.
A writing module 406 configured to write the final driving information into a registry so that the display displays an image corresponding to the target resolution on a full screen.
In the invention, under the condition that the target resolution is not supported by the display, the method can support the target resolution according to the adjusted driving information by adjusting the initial driving information corresponding to the target resolution and writing the adjusted driving information into the registry of the corresponding display, namely, the display can provide the option corresponding to the target resolution and can display the image corresponding to the target resolution on the full screen.
In an optional embodiment, the initial driving information further includes: line sum time, resolution, and field sum time.
The adjustment module is further configured to adjust the initial pixel clock frequency by adjusting the line sum time, resolution, and field sum time.
In an optional embodiment, the initial driving information further includes: line sum time. The adjustment module further configured to adjust the initial pixel clock frequency by adjusting the row sum time.
In an optional embodiment, the adjusting module is further configured to adjust the initial pixel clock frequency according to the reference pixel clock frequency, a field sum time in the initial driving information, and a refresh rate in the initial driving information.
In an alternative embodiment, the write module includes:
a translation submodule configured to translate the final drive information into a corresponding detailed timing description.
A write submodule configured to write the corresponding detailed timing description into a registry.
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A resolution adjustment method, comprising:
determining a target resolution of the display;
determining initial driving information corresponding to a target resolution according to the target resolution of a display, wherein the initial driving information is information for driving the display under the target resolution, and the initial driving information comprises an initial pixel clock frequency;
acquiring a reference pixel clock frequency set executable by the display, wherein the reference pixel clock frequency set comprises at least two pixel clock frequencies executable by the display;
determining a pixel clock frequency closest to the initial pixel clock frequency in the reference pixel clock frequency group, and taking the closest pixel clock frequency as a reference pixel clock frequency;
adjusting the initial driving information according to the reference pixel clock frequency so that the adjusted initial pixel clock frequency is the same as the reference pixel clock frequency, and taking the adjusted initial driving information as final driving information;
and writing the final driving information into a registry so that the display displays the image corresponding to the target resolution on a full screen.
2. The resolution adjustment method according to claim 1, wherein the initial driving information further includes: row sum time, refresh rate, and field sum time;
the adjusting the initial driving information includes: adjusting the initial pixel clock frequency by adjusting the row sum time, refresh rate, and field sum time.
3. The resolution adjustment method according to claim 1, wherein the initial driving information further includes: line sum time;
the adjusting the initial driving information includes: adjusting the initial pixel clock frequency by adjusting the row sum time.
4. The resolution adjustment method according to claim 3, wherein the step of adjusting the initial pixel clock frequency by adjusting the line sum time comprises: adjusting the initial pixel clock frequency according to the reference pixel clock frequency, the field sum time in the initial driving information, and the refresh rate in the initial driving information.
5. The resolution adjustment method according to claim 1, wherein the step of writing the final drive information into a registry comprises:
converting the final driving information into corresponding detailed timing description;
writing the corresponding detailed timing description to a registry.
6. A resolution adjustment system, comprising:
a first determination module configured to determine a target resolution of a display;
a second determining module, configured to determine initial driving information corresponding to a target resolution of a display according to the target resolution, where the initial driving information is information for driving the display at the target resolution, and the initial driving information includes an initial pixel clock frequency;
an obtaining module configured to obtain a set of reference pixel clock frequencies executable by the display, the set of reference pixel clock frequencies including at least two pixel clock frequencies executable by the display;
a third determining module configured to determine, among the set of reference pixel clock frequencies, a pixel clock frequency closest to the initial pixel clock frequency and to use the closest pixel clock frequency as a reference pixel clock frequency;
an adjusting module configured to adjust the initial driving information according to the reference pixel clock frequency so that the adjusted initial pixel clock frequency is the same as the reference pixel clock frequency, and to use the adjusted initial driving information as final driving information;
and the writing module is configured to write the final driving information into a registry so that the display displays the image corresponding to the target resolution in a full screen mode.
7. The resolution adjustment system according to claim 6, wherein the initial driving information further includes: row sum time, refresh rate, and field sum time;
the adjustment module further configured to adjust the initial pixel clock frequency by adjusting the row sum time, refresh rate, and field sum time.
8. The resolution adjustment system according to claim 6, wherein the initial driving information further includes: line sum time;
the adjustment module further configured to adjust the initial pixel clock frequency by adjusting the row sum time.
9. The resolution adjustment system of claim 8, wherein the adjustment module is further configured to adjust the initial pixel clock frequency according to the reference pixel clock frequency, a field sum time in the initial driving information, and a refresh rate in the initial driving information.
10. The resolution adjustment system of claim 6, wherein the writing module comprises:
a translation submodule configured to translate the final drive information into a corresponding detailed timing description;
a write submodule configured to write the corresponding detailed timing description into a registry.
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Effective date of registration: 20230613 Address after: 518057 1701, Yanxiang science and technology building, 31 Gaoxin middle Fourth Road, Maling community, Yuehai street, Nanshan District, Shenzhen City, Guangdong Province Patentee after: Yanxiang smart IOT Technology Co.,Ltd. Address before: No.1, Yanxiang Zhigu chuangxiangdi, No.11, Gaoxin Road, Guangming New District, Shenzhen, Guangdong 518107 Patentee before: EVOC INTELLIGENT TECHNOLOGY Co.,Ltd. |