CN105446462B

CN105446462B - Display method, device, circuit and electronic equipment

Info

Publication number: CN105446462B
Application number: CN201410300975.6A
Authority: CN
Inventors: 张伟; 王培�
Original assignee: Lenovo Beijing Ltd
Current assignee: Lenovo Beijing Ltd
Priority date: 2014-06-27
Filing date: 2014-06-27
Publication date: 2020-12-18
Anticipated expiration: 2034-06-27
Also published as: CN105446462A

Abstract

The invention provides a display method, which is applied to electronic equipment, wherein the electronic equipment comprises an EC (embedded control unit), a GPU (graphics processing unit) and a display screen, and the display method comprises the following steps: acquiring operating parameters of the electronic equipment; judging whether the operating parameters of the electronic equipment meet a first preset switching condition or not; and when the operating parameters meet a first preset switching condition, closing the central processing unit, and switching the EC to control the image displayed by the display screen. By adopting the method, the electronic equipment can enter the dormant state when meeting the preset switching condition, namely the GPU is closed, the screen display is controlled only according to the EC without starting other components of the central processing unit, the electronic equipment is ensured to display contents on the screen when entering the dormant state, the power consumption of the electronic equipment is reduced, and the endurance time of the electronic equipment is long.

Description

Display method, device, circuit and electronic equipment

Technical Field

The invention relates to the field of electronic equipment, in particular to a display method, a device circuit and electronic equipment.

Background

With the development of electronic technology, the performance requirements of users on electronic devices are higher and higher. The standby time has become a parameter of greater concern to users.

When a user is doing some simple operations, such as reading news, novels, etc., the content displayed on the computer screen is a static picture, and an input device such as a mouse or a keyboard does not have any operation, only a corresponding small part of programs in the electronic equipment need to be operated, but in the prior art, a central processing unit of the electronic equipment operates at full power, so that the power consumption of the computer is increased, and the endurance time is short.

Disclosure of Invention

In view of the above, the present invention provides a display method, which solves the problem of short endurance time of an electronic device caused by unnecessary full power operation in the prior art.

In order to achieve the purpose, the invention provides the following technical scheme:

a display method is applied to an electronic device, the electronic device comprises an EC (electronic control Unit), a GPU (graphics processing Unit) and a display screen, and the display method comprises the following steps:

acquiring operating parameters of the electronic equipment;

judging whether the operating parameters of the electronic equipment meet a first preset switching condition or not;

and when the operating parameters meet a first preset switching condition, the GPU is closed, and the EC is switched to control the image displayed by the display screen.

Preferably, the method further includes, after obtaining the operating parameters of the electronic device:

judging whether the operating parameters of the electronic equipment meet a second preset switching condition or not;

and when the operating parameters meet a second preset switching condition, starting the GPU, stopping the EC from controlling the image displayed by the display screen, and switching the image displayed by the display screen controlled by the GPU.

In the foregoing method, preferably, after the operating parameter is judged to satisfy the preset switching condition and before the GPU is turned off, the method further includes:

and acquiring attribute information of the current screen, wherein the attribute information comprises screen display content and/or backlight brightness.

In the foregoing method, preferably, when the attribute information of the current screen includes screen display content, the switching the image displayed on the display screen by the EC specifically includes:

and controlling the EC to control the subsequent display content of the screen according to the screen display content.

In the foregoing method, preferably, when the attribute information of the current screen includes backlight brightness, after the starting of the EC, the method further includes:

and determining a PWM control signal corresponding to the backlight brightness according to a preset corresponding relation between the backlight brightness and the PWM, so that the EC controls the display brightness of the screen according to the PWM control signal.

In the above method, preferably, after the switching the image displayed on the display screen by the EC and before the GPU is turned off, the method further includes:

acquiring a first timing value of a timer of the electronic equipment, wherein the first timing value is a time value of the timer starting timing from switching the EC;

judging whether the first timing value is larger than a first preset time value or not;

and when the number of the GPU is larger than the number of the GPU, executing the step of turning off the GPU.

In the above method, preferably, after the starting of the GPU and before the stopping of the EC from controlling the image displayed on the display screen, the method further includes:

acquiring a second timing value of a timer of the electronic equipment, wherein the second timing value is a time value of the timer starting timing from starting the GPU;

judging whether the second timing value is larger than a second preset time value or not;

and when the EC value is larger than the preset value, executing the image step of stopping the EC from controlling the display of the display screen.

A display device, the display device is applied to an electronic device, the electronic device further comprises a display screen, the display device comprises an EC and a GPU, and the display device further comprises:

the first acquisition module is used for acquiring the operating parameters of the electronic equipment;

the first judgment module is used for judging whether the operation parameters of the electronic equipment meet a first preset switching condition or not;

and the first control module is used for closing the GPU and switching the EC to control the image displayed by the display screen when the operating parameters meet a first preset switching condition.

The above apparatus preferably further comprises:

a second judging module for judging whether the operating parameters of the electronic equipment meet a second preset switching condition

And the second control module is used for starting the GPU when the operating parameters meet a second preset switching condition, controlling to stop the EC from controlling the display screen, and switching the GPU to control the display content of the display screen.

The above apparatus preferably further comprises:

and the second acquisition module is used for acquiring the attribute information of the current screen, wherein the attribute information comprises screen display content and/or backlight brightness.

Preferably, in the above apparatus, when the attribute information of the current screen includes screen display content, the first control module is specifically configured to control to turn off the GPU, and control the EC to control subsequent display content of the screen according to the screen display content.

In the above apparatus, preferably, when the attribute information of the current screen includes backlight brightness, the first control module is further configured to determine a PWM control signal corresponding to the backlight brightness according to a preset correspondence between the backlight brightness and PWM, so that the EC controls the display brightness of the screen according to the PWM control signal.

In the above apparatus, preferably, the first control module includes:

a first obtaining unit, configured to obtain a first timing value of a timer of the electronic device, where the first timing value is a time value when the timer starts timing from switching the EC;

the first judging unit is used for judging whether the first timing value is larger than a first preset time value or not;

and the first control unit is used for closing the GPU and switching the EC to control the image displayed by the display screen when the first timing value is greater than a first preset time value.

In the above apparatus, preferably, the second control module includes:

a second obtaining unit, configured to obtain a second timing value of a timer of the electronic device, where the second timing value is a time value of the timer starting timing from starting the GPU;

the second judging unit is used for judging whether the second timing value is larger than a second preset time value or not;

and the second control unit is used for stopping the EC from controlling the image displayed on the display screen when the second timing value is greater than a second preset time value.

A display device circuit applied to an electronic apparatus, the display device connecting a diode LED drive circuit and a display screen circuit, the display device comprising: EC. The system comprises a GPU, a first switch and a control component;

the input end of the first switch is respectively connected with the EC and the GPU, and the output end of the first switch is connected with the input end of the control component;

the output end of the control component is respectively connected with the LED driving circuit and the display screen circuit;

when the operating parameters of the electronic equipment meet a preset switching condition, the GPU is closed, and the EC is started, so that the EC controls the display screen to display;

otherwise, the EC is closed, and the GPU is started to control the GPU to operate, so that the GPU controls the display content of the display screen.

An electronic device comprising a display screen and a display apparatus as claimed in any preceding claim.

An electronic apparatus comprising a display screen and a display device circuit as described above.

As can be seen from the foregoing technical solutions, compared with the prior art, the present invention provides a display method applied to an electronic device, where the electronic device includes an EC, a GPU and a display screen, and the display method includes: acquiring operating parameters of the electronic equipment; judging whether the operating parameters of the electronic equipment meet a first preset switching condition or not; and when the operating parameters meet a first preset switching condition, closing the central processing unit, and switching the EC to control the image displayed by the display screen. By adopting the method, the electronic equipment can enter the dormant state when meeting the preset switching condition, namely the GPU is closed, the screen display is controlled only according to the EC without starting other components of the central processing unit, the electronic equipment is ensured to display contents on the screen when entering the dormant state, the power consumption of the electronic equipment is reduced, and the endurance time of the electronic equipment is long.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a flowchart of a display method according to embodiment 1 of the present invention;

FIG. 2 is a flowchart of a display method according to embodiment 2 of the present invention;

FIG. 3 is a flowchart of embodiment 3 of a display method according to the present invention;

FIG. 4 is a schematic diagram of PWM control logic according to embodiment 3 of a display method provided in the present invention;

FIG. 5 is a flowchart of a display method according to embodiment 4 of the present invention;

FIG. 6 is a timing diagram illustrating a display method according to embodiment 4 of the present invention;

fig. 7 is a schematic structural diagram of a display device according to embodiment 1 of the present invention;

fig. 8 is a schematic structural diagram of a display device in accordance with embodiment 2 of the present invention;

fig. 9 is a schematic structural diagram of a display device according to embodiment 3 of the present invention;

fig. 10 is a schematic structural diagram of a display device according to embodiment 4 of the present invention;

FIG. 11 is a diagram illustrating a circuit of a display device according to an embodiment of the present invention;

fig. 12 is a schematic structural diagram of a display device circuit according to an embodiment of the present invention.

Detailed Description

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.

To more particularly emphasize implementation independence, this description refers to a number of modules or units. For example, a module or unit may be implemented by hardware circuits comprising custom VLSI circuits or gate arrays, such as logic chips, transistors, or other components. A module or unit may also be implemented in programmable hardware devices such as field programmable gate arrays, programmable array logic, programmable logic devices or the like.

Modules or units may also be implemented in software for execution by various forms of processors. An executable code module may, for instance, comprise one or more physical or logical blocks of computer instructions which may, for instance, be formed as an object, procedure, or function. Nevertheless, the executables of an identified module or element need not be physically located together, but may comprise disparate instructions stored in different locations which, when joined logically together, comprise the module or element and achieve the desired result for the module or element.

Indeed, a module or unit of executable code may be a single instruction, or many instructions, and may even be distributed over several different code segments, among different programs, and across several memory devices. Similarly, operational data may be identified and illustrated herein within modules or units, and may be embodied in any suitable form and organized within any suitable data structure. The operational data may be collected as a single data set, or may be distributed over different locations having different storage devices, and may exist, at least partially, merely as electronic signals on a system or network.

Reference throughout this specification to "one embodiment" or similar language means that a feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, appearances of the phrases "in one embodiment," "in an embodiment," and similar language throughout this specification may, but do not necessarily, all refer to the same embodiment.

Furthermore, the described features, structures, or characteristics of the invention may be combined in any suitable manner in one or more embodiments. The following description will provide many specific details such as examples of programming, software modules, user selections, network transactions, database queries, database structures, hardware modules, hardware circuits, hardware chips, etc., to provide an understanding of embodiments of the invention. One skilled in the relevant art will recognize, however, that the invention may be practiced without one or more of the specific details, or with other methods, components, materials, and so forth. In other instances, well-known structures, materials, or operations are not shown in detail to avoid obscuring the invention.

As shown in fig. 1, the method may be applied to an electronic device having a GPU (graphics Processing Unit), an EC (Embedded Controller), and a display screen, where the computer may be an electronic device having a display screen and a multiprocessing core, such as a desktop, a notebook, a tablet computer, a mobile phone, and a smart television.

The multi-Processing core of the electronic device includes a GPU, an EC, and other processors, and each of the processors constitutes a Central Processing Unit (CPU) of the electronic device.

The method specifically comprises the following steps:

step S101: acquiring operating parameters of the electronic equipment;

wherein the operating parameters include: the received user operation information, the running state parameters of the electronic equipment and the like.

Specifically, the operation information generated by the user operating the electronic device includes: operation information of any operation performed on the electronic device by a user;

or a time counted when the user does not operate the electronic device.

Step S102: judging whether the operating parameters of the electronic equipment meet a first preset switching condition or not;

wherein, the first preset switching condition comprises: a preset time value at which the user does not operate the electronic device.

When the operation parameter meets the preset switching condition, the electronic device enters a dormant state, and some useless processing cores in the electronic device need to be closed to stop the operation of the electronic device, so that the power consumption of the electronic device is reduced.

Specifically, when the timing time during which the user does not operate the electronic device satisfies the preset time value, the operation parameter satisfies the preset switching condition, otherwise, the operation parameter does not satisfy the preset switching condition.

Specifically, when the received operation parameter includes operation information generated when the user triggers the key for switching the state, the operation parameter satisfies a first preset switching condition.

It should be noted that, in the actual implementation, it may also be determined whether the operation information meets a preset operation condition to determine whether the operation information is generated by the user active trigger key, and when it is determined that the operation information is generated by the user active trigger key, step S102 is performed again, otherwise, the operation information is ignored to reduce the false switching caused by the user mistakenly touching the key.

Step S103: and when the operation parameters meet a first preset switching condition, the GPU is closed, and the EC is switched to control the image displayed by the display screen.

When the operation parameters of the electronic equipment meet preset switching conditions, the GPU is controlled to be closed, the control of the GPU on the display content of the display screen is stopped, and the electronic equipment enters a low-power-consumption dormant state; and the switching EC takes over to control the screen display, so that the EC controls the display content of the display screen.

It should be noted that, when the GPU controls the display of the display screen, other corresponding display structures in the central processing unit cooperate with the GPU, so that when the electronic device enters a sleep state and the display content of the display screen is maintained, the GPU and the other display structures maintain a working state, so that the power consumption of the electronic device is not low enough; when the EC operates, the EC does not need to be matched with other corresponding display structures, and when the electronic equipment enters a dormant state and the display content of the display screen is maintained, the EC operates only, and the GPU and the other display structures stop supplying power, so that the power consumption of the electronic equipment is reduced.

In summary, the display method provided in this embodiment can enter the sleep state when the electronic device meets the first preset switching condition, that is, turn off the GPU, and control the screen display only according to the EC without starting other components of the central processing unit, thereby ensuring that the electronic device can display content on the screen when entering the sleep state, reducing the power consumption of the electronic device, and prolonging the endurance time of the electronic device.

Fig. 2 shows a flowchart of embodiment 2 of a display method provided in the present application, where the method is implemented by the following steps:

step S201: acquiring operating parameters of the electronic equipment;

step S202: judging whether the operating parameters of the electronic equipment meet a first preset switching condition or not;

step S203: and when the operating parameters meet a first preset switching condition, the GPU is closed, and the EC is switched to control the image displayed by the display screen.

Step S204: judging whether the operating parameters of the electronic equipment meet a second preset switching condition or not;

specifically, when the electronic device is provided with a button for switching the state, the second preset switching condition includes: the operation parameters comprise operation information generated by triggering the key by the user.

Specifically, when the received operation parameter includes operation information generated when the user triggers a key to switch back to the working state, the operation parameter satisfies a second preset switching condition, otherwise, the operation parameter does not satisfy the second preset switching condition.

Step S205: and when the operating parameters meet a second preset switching condition, starting the GPU, stopping the EC from controlling the image displayed by the display screen, and switching the image displayed by the display screen controlled by the GPU.

When the operating parameters of the electronic equipment meet a second preset switching condition, the EC is controlled to stop controlling the display content of the display screen, and the electronic equipment exits from the sleep state; and starting the GPU to enable the GPU to control the display content of the display screen.

By adopting the method, when the GPU quits the sleep state, only the GPU which stops supplying power needs to be supplied with power continuously, and the working state is quickly recovered.

It should be noted that, in this embodiment, although the steps S202 to 203 are executed first to enter the sleep state, and then the steps S204 to 205 are executed to enter the operating state, but not limited to this, in practical implementation, corresponding state judgment may be selected according to the current operating condition of the electronic device, for example, when the electronic device is in the sleep state, only the judgment of the second preset switching condition is performed, and when the electronic device is in the operating state, only the judgment of the first preset switching condition is performed.

In summary, the display method provided in this embodiment ensures that the content is continuously displayed on the screen of the electronic device when the electronic device enters the sleep state, and when the electronic device exits the sleep state, only the GPU and the like which stop supplying power need to be continuously supplied with power, and other operations are not needed, so that the working state can be quickly recovered, and the user experience is improved.

Fig. 3 shows a flowchart of embodiment 3 of a display method provided in the present application, where the method is implemented by the following steps:

step S301: acquiring operating parameters of the electronic equipment;

step S302: judging whether the operating parameters of the electronic equipment meet a first preset switching condition or not;

steps S301 to 302 are the same as steps S101 to 102 in embodiment 1, and are not described again in this embodiment.

Step S303: acquiring attribute information of the current screen;

wherein the attribute information comprises screen display content and/or backlight brightness.

Specifically, before the electronic device enters a sleep state with low power consumption, attribute information of a current screen of the electronic device is acquired for use in controlling the screen of the electronic device to continue to display content according to the attribute information after the electronic device subsequently enters the sleep state.

Specifically, a backlight brightness reading and notification protocol of upper layer EM (Energy management) software is defined, and when the attribute information of the screen is acquired, the current screen backlight brightness value of the system can be read through the upper layer EM software.

Specifically, the obtained attribute information is cached to a preset position, where the preset position includes a storage area corresponding to the EC, or a storage structure that is kept in operation in the electronic device, and the preset position is not limited in this embodiment, and only needs to ensure that the EC can obtain the cached attribute information from the storage area or the storage structure.

Step S304: the GPU is closed, and the EC is switched to control the image displayed by the display screen;

step S304 is the same as step S103 in embodiment 1, and is not described again in this embodiment.

Step S305: and controlling the EC to control the subsequent display content of the screen according to the screen display content.

When the attribute information of the current screen contains screen display content, the EC controls the display screen to display, specifically including: and controlling the EC to control the display content of the screen according to the screen display content, so that the EC controls the display of the display screen.

When the attribute information of the current screen includes backlight brightness, the EC controls the display screen to display, which specifically includes:

firstly, a corresponding relation between the backlight brightness and the PWM (Pulse-Width Modulation) is preset, and then a PWM control signal corresponding to the backlight brightness is determined according to the corresponding relation, so that the EC controls the display brightness of the screen according to the PWM control signal.

The PWM control logic schematic shown in fig. 4 is as follows:

in the figure, the arrow direction indicates the signal transmission direction.

When the EC control screen displays content: the upper layer software EM reads the System brightness order, writes the brightness value corresponding to the order to the register TCON, the PWM Output signal of the display card, the BIOS (Basic Input Output System) reports the PWM Output signal to the operating System, 0-100 order brightness is preset in the operating System, the upper layer software can also control the application program interface (Intel Graphics Driver API) of the display card, Output the signal to the register (Panel TCON) of the display screen, the EDP (Embedded display Port, digital audio and video transmission interface) AUX (Audio, Auxiliary) channel (channel) is written to the interface defined by the Panel TCON (control Panel register) in the register to control the Output of the DPCD so as to control the Output of the fixed PWM mode, and then Output the Output to the drive circuit of the Panel LED Driver (display screen).

When the GPU controls the screen to display the content: the display card hardware outputs PWM (Graphics PWM output) signals to the PWM module and then outputs the PWM signals to a driving circuit (Panel LED Driver) of the display screen.

Since the backlight luminance corresponds to TCON FW (Time Controller Firmware), the correspondence between the backlight luminance and PWM can be converted into the correspondence between the luminance PWM duty ratio and TCON FW.

Specifically, the correspondence relationship between the luminance PWM duty and TCON FW is shown in table 1.

PWMI	0x1994
		1％	03
2％	05
		3％	08
4％	0A
		…	…
50％	80
		…	…
98％	FA
		99％	FD
100％	FF

TABLE 1

And determining the PWM corresponding to the brightness value according to the table 1, and further outputting a corresponding PWM signal.

Specifically, when the GPU is turned off and the EC is switched to control the screen display, the electronic device enters a low-power-consumption sleep state, and at this time, the EC controls the display content of the screen according to the acquired attribute information.

Specifically, according to the screen display content and/or the backlight brightness acquired in step S303, the EC refreshes the screen of the electronic device that enters the sleep state so that the content displayed on the screen is the same as the content displayed before the electronic device enters the sleep state, and in the sleep state of the electronic device, the screen maintains displaying the content.

For example, a user needs to play a stable display of the content currently displayed on the computer screen for a long time, such as displaying a certain page of a certain document for a duration of 10 minutes, and the content displayed on the computer before the computer enters a sleep state with low power consumption includes: the display content and the backlight brightness are cached, after the GPU enters a dormant state, the GPU stops running, the EC obtains content information corresponding to the image from the cache, refreshes pixels of a computer screen and continues to display the image, and the power consumption of the computer is reduced while the image is ensured to be continuously displayed in the computer screen.

In summary, according to the display method provided in this embodiment, before the electronic device enters the low-power-consumption sleep state, the attribute information of the screen of the electronic device is acquired, and after the electronic device enters the sleep state, the EC is controlled to refresh the screen of the electronic device according to the attribute information, so that the content is continuously displayed on the screen, and the power consumption of the computer is reduced while the image is continuously displayed on the screen of the computer.

Fig. 5 shows a flowchart of embodiment 4 of a display method provided in the present application, where the method is implemented by the following steps:

step S501: acquiring operating parameters of the electronic equipment;

step S502: judging whether the operating parameters of the electronic equipment meet a first preset switching condition or not;

when the operation parameters meet a first preset switching condition, executing a step S503, otherwise, executing a step S507;

steps S501 to 502 are the same as steps S201 to 202 in embodiment 2, and are not described again in this embodiment.

Step S503: switching the EC to control the image displayed by the display screen;

when the operating state parameters of the electronic equipment meet a first preset switching condition, the GPU for controlling the screen display content of the electronic equipment is replaced by the EC.

Step S504: acquiring a first timing value of a timer of the electronic equipment;

wherein the first timing value is a time value when the timer starts timing from switching the image displayed by the EC control display screen;

and after the image displayed on the display screen is controlled by the EC, a timer starts to count time, and a first timing value of the timer is acquired.

In a specific implementation, the first timing value of the timer is obtained in real time, or obtained at a certain time interval, which is not described in this embodiment.

Step S505: judging whether the first timing value is larger than a first preset time value or not;

the first preset time value is the minimum time interval between the GPU being closed and the EC being switched to control the image displayed by the display screen.

In one embodiment, the first predetermined time is 500 ms.

Step S506: when the first timing value is larger than a first preset time value, closing the GPU;

and when the first timing value is greater than a first preset time value, determining that the EC starts to control the screen to display, and closing the GPU.

It should be noted that the first preset time enables the EC operation to be linked with the GPU operation, that is, the GPU is turned off in a delayed manner, so that images are continuously displayed on a display screen in the electronic device, and the situation that the display of the display screen is not controlled due to the switching between the EC and the GPU does not occur.

Step S507: judging whether the operating parameters of the electronic equipment meet a second preset switching condition or not;

step S507 is the same as step S204 in embodiment 2, and is not described again in this embodiment.

Step S508: when the operation parameters meet a second preset switching condition, starting the GPU;

and when the running state parameters of the electronic equipment do not meet the preset switching conditions, replacing the EC for currently controlling the screen display content of the electronic equipment with the GPU.

Step S509: acquiring a second timing value of a timer of the electronic equipment, wherein the second timing value is a time value of the timer starting timing from starting the GPU;

and after starting the GPU, starting timing by a timer, and acquiring a second timing value of the timer.

In a specific implementation, the second timing value of the timer is obtained in real time, or obtained at a certain time interval, which is not described in this embodiment.

Step S510: judging whether the second timing value is larger than a second preset time value or not;

wherein the second predetermined time value is a minimum time interval between turning off the EC and turning on the GPU.

In a specific implementation, the second predetermined time value is 500 ms.

Step S511: and when the second timing value is larger than a second preset time value, stopping the EC from controlling the image displayed on the display screen.

And when the second timing value is greater than the first preset time value, determining that the GPU is started, and stopping the EC from controlling the image displayed by the display screen.

It should be noted that the second preset time enables the EC operation to be linked with the GPU operation, that is, the EC delays to stop controlling the image displayed on the display screen, so that the image is continuously displayed on the display screen in the electronic device, and the situation that the display on the display screen is not controlled due to the switching between the GPU and the EC does not occur.

Referring to fig. 6, a timing diagram of the present embodiment is shown, wherein a dashed line 601 represents the timing of EC, a solid line 602 represents the timing of GPU, T1 represents GPU delay closing time, and T2 represents EC delay closing time. In this embodiment, both the EC and the GPU are triggered to turn on at the rising edge and turn off at the falling edge.

In summary, in the display method provided in this embodiment, when the EC and the GPU are switched, the delayed turning-off is performed, so that images are continuously displayed on the display screen in the electronic device, and the situation that the display of the display screen is not controlled due to the switching between the GPU and the EC is avoided.

The above embodiments of the present invention describe a display method in detail, and the method of the present invention can be implemented by various types of apparatuses, so that the present invention also provides a display apparatus, and the following detailed description will be given of specific embodiments.

Fig. 7 is a schematic structural diagram of embodiment 1 of a display device provided in this application, where the device may be applied to an electronic device having a GPU, an EC, and a display screen, and the computer may be an electronic device having a display screen and a multiprocessing core, such as a desktop computer, a notebook computer, a tablet computer, a mobile phone, and a smart television.

The multi-processing core of the electronic device comprises a GPU, an EC and other processors, and the processors form a CPU of the electronic device.

The device specifically comprises the following structure:

a first obtaining module 701, a first judging module 702, a first control module 703 and a second control module 704;

a first obtaining module 701, configured to obtain an operating parameter of the electronic device;

or a time counted when the user does not operate the electronic device.

A first determining module 702, configured to determine whether an operating parameter of the electronic device meets a preset switching condition;

wherein, the preset switching condition comprises: the method includes the steps that a preset time value that a user does not operate the electronic equipment is obtained, or when the electronic equipment is provided with a key for switching states, the user triggers operation information generated by the key, and the like.

When the operating parameter meets the first preset switching condition, the first control module 703 is triggered.

When the operation parameter meets the first preset switching condition, the electronic device enters a dormant state, and some useless processing cores in the electronic device need to be closed to stop the operation of the electronic device, so that the power consumption of the electronic device is reduced.

It should be noted that, in practical implementation, the first determining module 702 may further determine whether the operation information satisfies a preset operation condition, so as to determine whether the operation information is generated by the active trigger key of the user, and when the operation information is generated by the active trigger key of the user, the first determining module 702 is triggered, otherwise, the operation information is ignored, so as to reduce the false switching caused by the false trigger key of the user.

A first control module 703, configured to close the GPU and switch the EC to control the image displayed on the display screen when the operating parameter meets a first preset switching condition.

When the operating parameters of the electronic device meet a first preset switching condition, the first control module 703 controls to turn off the GPU, stops the control of the GPU on the display content of the display screen, and enters a low-power-consumption sleep state; switching the image displayed by the EC control display screen so that the display of the electronic device is controlled by the EC.

In summary, the display device provided in this embodiment can enter the sleep state when the electronic device meets the preset switching condition, that is, the GPU is turned off, and the screen display is controlled only according to the EC without starting other components of the central processing unit, so that the electronic device can display content on the screen when entering the sleep state, the power consumption of the electronic device is reduced, and the endurance of the electronic device is long.

As shown in fig. 8, the structure diagram of embodiment 2 of the display device provided in the present application specifically includes the following structures: a first obtaining module 801, a first judging module 802, a first control module 803, a second judging module 804 and a second control module 805;

the first obtaining module 801, the first determining module 802, and the first controlling module 803 are consistent with the corresponding structural functions in embodiment 1, and are not described in detail in this embodiment.

A second determining module 804, configured to determine whether an operating parameter of the electronic device meets a second preset switching condition;

A second control module 805, configured to start the GPU when the operation parameter meets a second preset switching condition, and control to stop the EC from controlling the display screen, and switch the GPU from controlling the display content of the display screen.

When the operating parameter of the electronic device does not satisfy the preset switching condition, the second control module 805 controls to close the EC, stops the EC from controlling the display content of the display screen, and the electronic device exits the sleep state; and starting the GPU to enable the GPU to control the display content of the display screen.

As shown in fig. 9, the present application provides a schematic structural diagram of an embodiment 3 of a display device, where the device specifically includes the following structure: a first obtaining module 901, a first judging module 902, a second obtaining module 903 and a first control module 904;

the first obtaining module 901 and the first determining module 902 are consistent with the corresponding structural functions in embodiment 1, and are not described in detail in this embodiment.

A second obtaining module 903, configured to obtain attribute information of the current screen, where the attribute information includes screen display content and/or backlight brightness.

Specifically, a backlight brightness reading and notification protocol of upper layer EM software is defined, and when the attribute information of the screen is acquired, the current screen backlight brightness value of the system can be read through the upper layer EM software.

When the attribute information of the current screen includes screen display content, the first control module 904 is specifically configured to control to turn off the GPU, and control the EC to control subsequent display content of the screen according to the screen display content.

firstly, the corresponding relation between the backlight brightness and the PWM is preset, and then the PWM control signal corresponding to the backlight brightness is determined according to the corresponding relation, so that the EC controls the display brightness of the screen according to the PWM control signal.

The specific logic of the PWM control is as follows as shown in fig. 4:

when the ECEC control screen displays the content: the upper layer software EM reads the brightness order of the system, writes the brightness value of the corresponding order to a register, outputs a PWM signal of a display card, the BIOS reports the PWM signal to an operating system, the operating system is preset with 0-100 order brightness, the upper layer software can also control an API, outputs the signal to the Panel TCON, controls the DPCD through the EDPAUX channel in the register to control the output of a fixed PWM mode, and then outputs the signal to the Panel LED Driver.

When the GPU controls the screen to display the content: and outputting the signals to the PWM module by the Graphics PWM module, and further outputting the signals to the Panel LED Driver.

Since the backlight brightness corresponds to the register software TCON FW, the correspondence between the backlight brightness and PWM can be converted into the correspondence between the brightness PWM duty and TCON FW.

Specifically, according to the screen display content and/or the backlight brightness acquired by the second acquiring module 903, the EC refreshes the electronic device screen entering the sleep state so that the content displayed on the electronic device screen is the same as the content displayed before the electronic device enters the sleep state, and in the sleep state of the electronic device, the screen maintains displaying the content.

In summary, according to the display apparatus provided in this embodiment, before the electronic device enters the low power consumption sleep state, the attribute information of the screen of the electronic device is acquired, and after the electronic device enters the sleep state, the EC is controlled to refresh the screen of the electronic device according to the attribute information, so that the content is continuously displayed on the screen, and the power consumption of the computer is reduced while the image is continuously displayed on the screen of the computer.

As shown in fig. 10, the present application provides a schematic structural diagram of an embodiment 4 of a display device, and the present device is implemented by the following structures: a first obtaining module 1001, a first judging module 1002, a second obtaining module 1003, a first control module 1004, a second judging module 1005 and a second control module 1006;

the first obtaining module 1001, the first determining module 1002, the second obtaining module 1003, and the second determining module 1005 have the same functions as those of the corresponding structures in embodiments 2 and 3, which are not described in detail in this embodiment.

Wherein, the first control module 1004 includes: a first acquisition unit 1007, a first judgment unit 1008, and a first control unit 1009;

wherein the second control module 1006 includes: a second acquisition unit 1010, a second determination unit 1011, and a second control unit 1012.

A first obtaining unit 1007, configured to obtain a first timing value of a timer of the electronic device, where the first timing value is a time value when the timer starts timing from switching the EC;

when the EC is started, the timer starts to count time, and the first acquiring unit 1007 acquires a first count value of the timer.

In a specific implementation, the first obtaining unit 1007 obtains the first timing value of the timer, which may be obtained in real time or at certain time intervals, and is not described in this embodiment.

A first determining unit 1008, configured to determine whether the first timing value is greater than a first preset time value;

the first preset time value is a minimum time interval between the GPU being turned off and the EC being turned on.

In one embodiment, the first predetermined time is 500 ms.

When the first determining unit 1008 determines that the timing value is greater than the first preset time value, it is determined that the EC is turned on, and at this time, the first control unit 1009 turns off the GPU and switches the EC to control the image displayed on the display screen.

And when the running state parameters of the electronic equipment meet a second preset switching condition, switching the EC for currently controlling the screen display content of the electronic equipment into the GPU.

A second obtaining unit 1010, configured to obtain a second timing value of a timer of the electronic device, where the second timing value is a time value of the timer starting timing from starting the GPU;

when the GPU is started, the timer starts to count time, and the second obtaining unit 1010 obtains a second timing value of the timer.

In a specific implementation, the second obtaining unit 1010 obtains the second timing value of the timer in real time, or at certain time intervals, which is not described in this embodiment.

A second determining unit 1011, configured to determine whether the second timing value is greater than a second preset time value;

In a specific implementation, the second predetermined time value is 500 ms.

When the second determining unit 1011 determines that the EC is turned on when the second timing value is greater than the second preset time value, the second control unit 1012 stops the EC from controlling the image displayed on the display screen.

It should be noted that the second preset time enables the EC operation to be linked with the GPU operation, that is, the EC is turned off in a delayed manner, so that images are continuously displayed on a display screen in the electronic device, and the situation that the display of the display screen is not controlled due to the switching between the GPU and the EC is avoided.

It should be noted that, in this embodiment, the first timing value and the second timing value are both 500ms, but the present invention is not limited to this, and in actual implementation, the first timing value and the second timing value may also be set according to an actual switching situation of the processor, and only the EC operation and the GPU operation need to be ensured to be linked, and the present embodiment is not limited.

In summary, the display device provided in this embodiment is turned off with a delay when the EC and the GPU are switched, so as to ensure that images are continuously displayed on the display screen in the electronic device, and the situation that the display of the display screen is not controlled due to the switching between the GPU and the EC does not occur.

The above embodiments provided by the present invention describe a display method and device in detail, and the method of the present invention can be implemented by using various circuit structures, so the present invention also provides a display device circuit, and the following specific embodiments are given for detailed description.

Fig. 11 is a schematic diagram of an embodiment of a display device circuit applied to an electronic device, where the display device is connected to a display screen circuit, and the display device circuit includes: EC1101, GPU1102, first switch 1103, and control component 1104;

the input end of the first switch 1103 is connected to the EC1101 and the GPU1102 respectively, and the output end of the first switch is connected to the input end of the control component 1104;

the output end of the control component 1104 is connected with a display screen circuit;

when the operating parameters of the electronic device meet a first preset switching condition, the GPU1102 is turned off, and the EC1101 is switched to control the image displayed on the display screen.

When the operating parameters of the electronic device meet a second preset switching condition, starting the GPU1102, stopping the EC1101 from controlling the image displayed on the display screen, and switching the GPU1102 to control the image displayed on the display screen.

Specifically, in this embodiment, the first switch is an OR gate OR, and when a high level is obtained from any one of the EC and the GPU, the first switch can be turned on, and the control component is TCON FM. The EDP _ VDD _ EN pin and the BL _ EN pin of the EC and the GPU control signal output values OR gates OR, and when the GPU is closed, the EC continuously controls a screen.

Specifically, the upper layer software EM reads the current backlight brightness value of the screen of the electronic device, and writes the current backlight brightness value to the interface defined by the TCON FM through the EDP AUX channel, so that the TCON FM controls the brightness of the screen display when the electronic device enters the sleep state according to the backlight brightness value.

It should be noted that when the GPU turns off the PWM output, the TCON FM can fix the output and maintain the screen display brightness and content of the electronic device.

Fig. 12 shows a specific structural schematic diagram of an embodiment of a display device circuit provided in the present application, where the display device circuit is applied to an electronic device, the display device is connected to a diode LED Driver circuit and a display screen circuit TCON, and the display device circuit specifically includes: PCH, EC, two OR GATEs OR GATE and MOS tubes.

Wherein the EC is controlled by PCH (Platform Controller Hub), and the PCH and EC are components of the central processor of the computer.

In this circuit, the GPU is one of the PCHs, and therefore, the GPU is described by taking GPH as an example in this embodiment.

The MOS tube is connected with a 20V power supply and outputs a 20V voltage value LED Driver.

The TCON further includes a RAM (random access memory) or a Register buffer to store the screen display content before the electronic device enters the sleep state.

In a specific implementation, the PCH and the EC receive a control signal, and after receiving the control signal, the PCH stops operating or starts operating according to the control signal. EC receives control signal at the same time, when PCH stops running, EC takes over screen display control according to the control signal; when the PCH starts to run, EC stops controlling screen display according to the control signal.

The application also provides an electronic device comprising a display screen and a display device as described in any of the above embodiments.

Wherein the display device includes an EC and a GPU, the display device further including: the functions of the various constituent modules of the display device are consistent with those of the corresponding structures in the above-mentioned one display device embodiment, and are not described in detail in this embodiment.

Preferably, the display device further includes: the functions of each constituent module of the display device are consistent with those of the corresponding structure in the above-mentioned one display device embodiment, and are not described in detail in this embodiment.

Preferably, the display device further includes: the functions of each constituent module of the display device are consistent with those of the corresponding structure in the above-mentioned one display device embodiment, and are not described again in this embodiment.

Preferably, when the attribute information of the current screen includes screen display content, the first control module is specifically configured to control to turn off the GPU, and control the EC to control subsequent display content of the screen according to the screen display content.

Preferably, when the attribute information of the current screen includes backlight brightness, the first control module is further configured to determine a PWM control signal corresponding to the backlight brightness according to a preset correspondence between the backlight brightness and PWM, so that the EC controls the display brightness of the screen according to the PWM control signal.

Preferably, the first control module of the display device includes: the functions of each constituent module of the display device are consistent with those of the corresponding structure in the above-mentioned one display device embodiment, and are not described again in this embodiment.

Preferably, the second control module of the display device includes: the functions of each constituent module of the display device are consistent with those of the corresponding structure in the above-mentioned one display device embodiment, and are not described again in this embodiment.

The application also provides an electronic device comprising a display screen and the display device circuit of the above embodiment. This display device connects diode LED drive circuit and display screen circuit, and display device includes: EC. The system comprises a GPU, a first switch and a control component; the functions and connections of the constituent modules of the display device circuit are identical to those of the corresponding structure in the above-mentioned one display device circuit embodiment, and are not described again in this embodiment.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. For the device provided by the embodiment, the description is relatively simple because the device corresponds to the method provided by the embodiment, and the relevant points can be referred to the method part for description.

The previous description of the provided embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features provided herein.

Claims

1. A display method is applied to an electronic device, the electronic device comprises an embedded processor EC, a graphic processor GPU and a display screen, and the display method comprises the following steps:

acquiring operating parameters of the electronic equipment; the operation parameters comprise timing time when the user does not operate the electronic equipment;

and when the operation parameters meet a first preset switching condition, the electronic equipment enters a dormant state, the GPU is closed, power supply to the GPU is stopped, and the EC is switched to control the image displayed by the display screen.

2. The method of claim 1, wherein after obtaining the operating parameters of the electronic device, further comprising:

3. The method according to claim 1, wherein after determining that the operating parameter satisfies a first preset switching condition and before turning off the GPU, further comprising:

4. The method according to claim 3, wherein when the attribute information of the current screen includes screen display content, the switching the image displayed by the display screen by the EC specifically includes:

5. The method according to claim 3, wherein when the attribute information of the current screen includes backlight brightness, after the switching the EC, the method further comprises:

6. The method of claim 1, wherein after switching the image displayed on the display screen by the EC and before turning off the GPU, further comprising:

7. The method of claim 2, wherein after the starting the GPU and before the stopping the EC from controlling the image displayed by the display screen, further comprising:

8. A display device is applied to an electronic device, the electronic device further comprises a display screen, the display device comprises an EC and a GPU, and the display device further comprises:

the first acquisition module is used for acquiring the operating parameters of the electronic equipment; the operation parameters comprise timing time when the user does not operate the electronic equipment;

and the first control module is used for enabling the electronic equipment to enter a dormant state when the operation parameters meet a first preset switching condition, turning off the GPU, stopping supplying power to the GPU and switching the EC to control the image displayed by the display screen.

9. The display device according to claim 8, further comprising:

And the second control module is used for starting the GPU when the operating parameters meet a second preset switching condition, controlling to stop the EC from controlling the display screen, and switching the display content of the display screen manufactured by the GPU.

10. The display device according to claim 8, further comprising:

11. The display device according to claim 10, wherein when the attribute information of the current screen includes screen display content, the first control module is specifically configured to control to turn off the GPU, and control the EC to control subsequent display content of the screen according to the screen display content.

12. The display device according to claim 10, wherein when the current attribute information of the screen includes backlight brightness, the first control module is further configured to determine a PWM control signal corresponding to the backlight brightness according to a preset correspondence between the backlight brightness and PWM, so that the EC controls the display brightness of the screen according to the PWM control signal.

13. The display device according to claim 8, wherein the first control module comprises:

14. The display device according to claim 9, wherein the second control module comprises:

15. A display device circuit, wherein the display device circuit is applied to an electronic apparatus, the display device is connected with a diode LED driving circuit and a display screen circuit, and the display device comprises: EC. The system comprises a GPU, a first switch and a control component;

when the operating parameters of the electronic equipment meet a first preset switching condition, the electronic equipment enters a dormant state, the GPU is closed, power supply to the GPU is stopped, and images displayed on the EC control display screen are switched; the operation parameters comprise timing time when the user does not operate the electronic equipment;

and when the operating parameters of the electronic equipment meet a second preset switching condition, starting the GPU, stopping the EC from controlling the image displayed by the display screen, and switching the image displayed by the GPU by controlling the display screen.

16. An electronic device, characterized in that the electronic device comprises a display screen and a display device according to any of the claims 8-14 above.

17. An electronic device, characterized in that it comprises a display screen and a display device circuit according to claim 15.