CN111651233B - Vehicle dual-screen multimedia dynamic frequency modulation method, system and computer equipment - Google Patents

Abstract

The invention discloses a vehicle-mounted double-screen multimedia dynamic frequency modulation method, which is used in a host or a host chip supporting vehicle-mounted double-screen multimedia display and comprises the following steps: judging whether the current scene is a bandwidth consumption scene or not, wherein the bandwidth is the memory bandwidth of the host chip; if the current scene is a bandwidth consumption scene, adjusting the refresh frequency of the system according to a preset refresh rate lower limit; if the current scene is a non-bandwidth-consuming scene, judging whether the current scene is a scene needing smooth animation; if the current scene is a scene needing smooth animation, adjusting the refreshing frequency of the system according to a preset smooth refreshing rate; and if the current scene is a scene which does not need smooth animation, adjusting the refreshing frequency of the system according to the memory bandwidth of the host chip. The invention also discloses a vehicle-mounted double-screen multimedia dynamic frequency modulation system and computer equipment. By adopting the invention, the refresh rate of the system can be dynamically adjusted according to the memory bandwidth and the practical application scene, thereby achieving the full utilization of the system resources and solving the problem of jamming.

Description

Vehicle dual-screen multimedia dynamic frequency modulation method, system and computer equipment

technical field

The invention relates to the technical field of automobiles, in particular to a vehicle-mounted dual-screen multimedia dynamic frequency modulation method, a vehicle-mounted dual-screen multimedia dynamic frequency modulation system and a computer device.

Background technique

In the native Android system, the refresh of the system interface is managed by SurfaceFlinger, and its refresh rate has been set to 60 frames per second during initialization. Inside the code logic, it will trigger a signal at a frequency of 60Hz, and This signal will trigger the entire refresh logic, including layer calculation, layer composition and image copying; each of these steps will consume system resources, but if the relevant steps cannot complete the entire action within 16ms, this refresh will not actually occur. Successful presentation to the screen results in a significant waste of resources; for a dual-screen system, since there is only one SurfaceFlinger for management, in the worst case, the aforementioned semaphore 1s will refresh 120 frames of 12.3-inch 1920×720 resolution screen data, which will place a heavy burden on system resources.

Memory bandwidth is a system resource that is inevitably consumed during software operation. Tests and verifications show that services such as speech recognition and image refresh consume a lot of related resources. During operation, the memory bandwidth of each business scenario of the system is at 100% usage for a long time. , causing a large number of business queuing delays, resulting in the overall system stuck.

In the prior art, the improvement is mainly achieved by upgrading the system CPU chip to IMX.6QP and the memory to 4G. However, upgrading the hardware will increase the economic cost of the project, and IMX.6QP only supports systems above Android 6, and the entire project migration has a huge project cost consumption; at the same time, the project needs to be re-developed from all aspects of hardware, software, and integration. The time cost cannot meet the demand for mass production.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to provide a vehicle-mounted dual-screen multimedia dynamic frequency modulation method, system and computer equipment, which can dynamically adjust the refresh rate of the system.

In order to solve the above technical problems, the present invention provides a method for dynamic frequency modulation of vehicle-mounted dual-screen multimedia, which is used in a host or host chip supporting vehicle-mounted dual-screen multimedia display, including: judging whether the current scene is a bandwidth-consuming scene, and the bandwidth is The memory bandwidth of the host chip; if the current scene is a bandwidth-consuming scene, the refresh rate of the system is adjusted according to the preset lower limit of the refresh rate; if the current scene is a non-bandwidth-consuming scene, it is judged whether the current scene is a scene that requires smooth animation; if the current scene is a scene that requires smooth animation If the scene requires smooth animation, adjust the refresh rate of the system according to the preset smooth refresh rate; if the current scene does not require smooth animation, adjust the refresh rate of the system according to the memory bandwidth of the host chip.

As an improvement of the above solution, the step of adjusting the refresh rate of the system according to the preset lower limit of the refresh rate includes: obtaining the preset lower limit of the refresh rate of the current scene; and adjusting the refresh rate of the system to the lower limit of the preset refresh rate step by step.

As an improvement of the above solution, the step of adjusting the refresh rate of the system according to the preset smooth refresh rate includes: obtaining a preset smooth refresh rate of the smooth animation; and adjusting the refresh rate of the system to the preset smooth refresh rate step by step.

As an improvement of the above solution, the step of adjusting the refresh frequency of the system according to the memory bandwidth of the host chip includes: periodically detecting the memory bandwidth of the host chip; judging whether the memory bandwidth of the host chip is lower than the preset bandwidth; If the bandwidth is lower than the preset bandwidth, the refresh frequency of the system is gradually reduced according to the memory bandwidth of the host chip; if the memory bandwidth of the host chip is not lower than the preset bandwidth, it is re-determined whether the current scene is a bandwidth-consuming scene.

As an improvement of the above solution, the bandwidth consumption scenario includes any one or more of the following scenarios: a scenario in which a touch event occurs on the dual-screen launcher, a scenario in which the dual-screen launcher runs navigation and voice, the main-screen launcher is used swipe and The secondary screen runs navigation and voice scenarios.

Correspondingly, the present invention also provides a vehicle-mounted dual-screen multimedia dynamic frequency modulation method system, including: a first judgment module for judging whether the current scene is a bandwidth-consuming scene, and the bandwidth is the memory bandwidth of the host chip; the first frequency an adjustment module, configured to adjust the refresh rate of the system according to the preset lower limit of the refresh rate when the first determination module determines that the current scene is a bandwidth-consuming scene; the second determination module is configured to determine when the first determination module determines When it is determined that the current scene is a non-bandwidth-consuming scene, it is judged whether the current scene is a scene that needs smooth animation; the second frequency adjustment module is used for when the second judgment module judges that the current scene is a scene that needs smooth animation, according to the preset frequency adjustment module. A smooth refresh rate is set to adjust the refresh frequency of the system; a third frequency adjustment module is used to adjust the refresh frequency of the system according to the memory bandwidth of the host chip when the second judgment module determines that the current scene is a scene that does not require smooth animation.

As an improvement of the above solution, the first frequency adjustment module includes: a refresh rate lower limit acquisition unit, used for acquiring the preset refresh rate lower limit of the current scene; Default refresh rate lower limit.

As an improvement of the above solution, the second frequency adjustment module includes: a smooth refresh rate acquisition unit for acquiring a preset smooth refresh rate for smooth animations; a smooth frequency modulation unit for adjusting the refresh rate of the system to the above Preset smooth refresh rate.

As an improvement of the above solution, the third frequency adjustment module includes: a bandwidth detection unit for periodically detecting the memory bandwidth of the host chip; a bandwidth judgment unit for judging whether the memory bandwidth of the host chip is lower than a preset bandwidth; the first The frequency modulation unit is used for reducing the refresh frequency of the system step by step according to the memory bandwidth of the host chip when the bandwidth judgment unit judges that the memory bandwidth of the host chip is lower than the preset bandwidth; the second frequency modulation unit is used for when the bandwidth judgment unit When judging that the outgoing memory bandwidth of the host chip is not lower than the preset bandwidth, the first judgment module is driven.

Correspondingly, the present invention also provides a computer device, comprising a memory and a processor, wherein the memory stores a computer program, and the processor executes the steps of the above-mentioned method for dynamic frequency modulation of vehicle-mounted dual-screen multimedia.

Implement the present invention, have the following beneficial effects:

The invention can dynamically adjust the refresh rate of the system according to the memory bandwidth of the host chip and the actual application scenario, and realizes the purpose of alleviating the bandwidth resource shortage by using the software method, thereby achieving full utilization of the system resources under the current hardware with limited resources. Balance the display effect and system performance, complete various complex car functions, and solve the problem of stuck;

Further, when adjusting the refresh rate, the present invention adopts a step-by-step adjustment method, which can effectively avoid a large adjustment of the refresh rate, realize a smooth transition of the refresh rate, and avoid obvious changes in the system interface.

Description of drawings

Fig. 1 is the embodiment flow chart of the vehicle-mounted dual-screen multimedia dynamic frequency modulation method of the present invention;

FIG. 2 is a schematic structural diagram of the vehicle-mounted dual-screen multimedia dynamic frequency modulation system of the present invention.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings.

The vehicle dual-screen multimedia dynamic frequency modulation method of the present invention is used in a host or host chip supporting vehicle-mounted dual-screen multimedia display, and can be applied to the imx6q hardware platform to support Android 4.4 systems with two 12.3-inch screens.

Referring to FIG. 1, FIG. 1 shows an embodiment process of the vehicle-mounted dual-screen multimedia dynamic frequency modulation method of the present invention, which includes:

S101, determine whether the current scene is a bandwidth consumption scene.

It should be noted that the bandwidth is the memory bandwidth of the host chip, and the bandwidth consumption scenario can be preset by the administrator according to the actual situation. Specifically, the bandwidth consumption scenario may be a scenario in which a touch event occurs on the dual-screen launcher, a scenario in which navigation and voice are run on the dual-screen, and a scenario in which the main-screen launcher is slid and the secondary-screen runs navigation and voice, but this is not the case. limit.

The launcher (ie Launcher) is the desktop launcher in the Android system. The desktops of the Android system are collectively called Launcher. Specifically, the scenarios in which the dual-screen navigation and voice are running, the main screen launcher is slid and the secondary screen is running navigation and voice are scenarios where the refresh rate can be reduced. Therefore, the administrator can appropriately reduce the lower limit of the refresh rate in the above scenarios, wherein, The scenario where dual-screen navigation and voice are running, that is, the main screen and the secondary screen are running navigation and voice at the same time; the main screen launcher is slid and the secondary screen is running navigation and voice, that is, the main screen launcher is sliding and the secondary screen is running navigation and voice at the same time. Scenes. The scenarios in which touch events occur on the dual-screen launcher are scenarios where the refresh rate cannot be reduced. Therefore, the administrator can appropriately increase the lower limit of the refresh rate in the above scenarios. The scenarios in which touch events occur in the dual-screen launcher are the main screen and the secondary screen. There are touch events in the context of the screen launcher.

Preferably, the present invention can record the preset refresh rate lower limit of different scenes and the preset smooth refresh rate of different scenes under PhoneWindow.

Therefore, the administrator can preset a lower limit of the refresh rate that meets the requirements according to the specific conditions of the bandwidth consumption scenario, which is highly flexible.

S102, if the current scene is a bandwidth consumption scene, adjust the refresh rate of the system according to the preset lower limit of the refresh rate.

Specifically, the step of adjusting the refresh rate of the system according to the preset lower limit of the refresh rate includes:

(1) Obtain the preset refresh rate lower limit of the current scene;

(2) Adjust the refresh rate of the system step by step to the preset lower limit of the refresh rate.

It should be noted that the step-by-step adjustment method can effectively avoid the large-scale adjustment of the refresh frequency, achieve a smooth and excessive refresh frequency, and avoid obvious changes in the system interface.

For example, the current refresh rate of the system is 45 frames/second. If the preset refresh rate lower limit of the current scene is 20 frames/second, the system refresh rate can be set to "45 frames/second—>40 frames/second—>35 frames. /sec—>30 frames/sec—>25 frames/sec—>20 frames/sec” gradient is adjusted step by step.

S103 , if the current scene is a non-bandwidth-consuming scene, determine whether the current scene is a scene requiring smooth animation.

S104 , if the current scene is a scene requiring smooth animation, adjust the refresh rate of the system according to the preset smooth refresh rate.

Specifically, the step of adjusting the refresh rate of the system according to the preset smooth refresh rate includes:

(1) Obtain the preset smooth refresh rate of smooth animation;

(2) Adjust the refresh rate of the system step by step to the preset smooth refresh rate.

It should be noted that the step-by-step adjustment method can effectively avoid the large-scale adjustment of the refresh frequency, achieve a smooth and excessive refresh frequency, and avoid obvious changes in the system interface.

For example, the current refresh rate of the system is 35 frames/sec. If the preset smooth refresh rate is 50 frames/sec, the system refresh rate can be set to "35 frames/sec—>40 frames/sec—>45 frames/sec— >50 frames/sec" gradient is adjusted step by step.

Therefore, the present invention dynamically adjusts the refresh rate of the system according to actual application scenarios (such as bandwidth consumption scenarios, scenarios that require smooth animation), so as to achieve full utilization of system resources, balance display effects and system performance, and solve the problem of stuck .

S105, if the current scene is a scene that does not require smooth animation, adjust the refresh frequency of the system according to the memory bandwidth of the host chip.

Specifically, the step of adjusting the refresh frequency of the system according to the memory bandwidth of the host chip includes:

(1) Periodically detect the memory bandwidth of the host chip;

(2) Determine whether the memory bandwidth of the host chip is lower than the preset bandwidth;

(3) If the memory bandwidth of the host chip is lower than the preset bandwidth, reduce the refresh frequency of the system step by step according to the memory bandwidth of the host chip;

It should be noted that the present invention can realize the periodic monitoring of the memory bandwidth in the SurfaceFlinger, and provide the external interface of the refresh frequency. At the same time, SurfaceFlinger also sets the current refresh rate according to the memory bandwidth.

Different from the prior art, the present invention increases the period detection of the memory bandwidth, and adjusts the refresh frequency of the system step by step according to the preset frequency modulation rule. Specifically, the preset frequency regulation rule is: when the memory bandwidth of the host chip exceeds 85%, the refresh rate is adjusted to 45 frames/second; when the memory bandwidth of the host chip exceeds 90%, the refresh rate is reduced to 30 frames/second ; When the memory bandwidth of the host chip exceeds 95%, reduce the refresh rate to 25 frames per second; when the memory bandwidth of the host chip exceeds 99%, reduce the refresh rate to 20 frames per second, but not limited by this.

Therefore, the present invention dynamically adjusts the refresh rate of the system according to the situation of the memory bandwidth, so as to achieve full utilization of the system resources, balance the display effect and the system performance, and solve the problem of stuck.

(4) If the memory bandwidth of the host chip is not lower than the preset bandwidth, re-determine whether the current scene is a bandwidth-consuming scene.

That is, if the memory bandwidth of the host chip is not lower than the preset bandwidth, the process returns to step S101 to re-determine whether the current scene is a bandwidth-consuming scene.

As can be seen from the above, the present invention does not rely on hardware upgrade, but solves the problem of system stuck caused by insufficient memory bandwidth through software means, and achieves the optimal effect of the existing hardware platform in a relatively low cost and fast manner. Specifically: the present invention preferentially sets the refresh rate according to a preset scene (such as a bandwidth-consuming scene, a scene that requires smooth animation); if the current scene is a preset scene, it is executed according to the preset refresh rate; if the current scene is not a In the preset scene, the refresh rate is reduced according to the bandwidth pressure; at the same time, when adjusting the refresh rate, the present invention adopts a step-by-step adjustment method, which can effectively avoid the large adjustment of the refresh frequency, realize the smooth and excessive refresh rate, and avoid the system The interface has changed significantly.

Referring to FIG. 2, FIG. 2 shows the specific structure of the vehicle-mounted dual-screen multimedia dynamic frequency modulation system 100 of the present invention, which includes a first judgment module 1, a first frequency adjustment module 2, a second judgment module 3, a second frequency adjustment module 4 and The third frequency adjustment module 5, specifically:

The first judgment module 1 is used for judging whether the current scene is a bandwidth consumption scene. It should be noted that the bandwidth is the memory bandwidth of the host chip, and the bandwidth consumption scenario can be preset by the administrator according to the actual situation; specifically, the bandwidth consumption scenario can be a scenario where a touch event occurs on the dual-screen launcher , the scene of running navigation and voice on dual screens, the scene of sliding the main screen launcher and running the navigation and voice on the secondary screen, but not limited by this.

The first frequency adjustment module 2 is configured to adjust the refresh frequency of the system according to the preset lower limit of the refresh rate when the first judgment module 1 judges that the current scene is a bandwidth-consuming scene. Specifically, the first frequency adjustment module 2 includes: a refresh rate lower limit acquisition unit, which is used to acquire the preset refresh rate lower limit of the current scene; a lower limit frequency adjustment unit, which is used to gradually adjust the refresh rate of the system to the preset refresh rate. Lower refresh rate limit. It should be noted that the step-by-step adjustment method can effectively avoid the large-scale adjustment of the refresh frequency, achieve a smooth and excessive refresh frequency, and avoid obvious changes in the system interface.

The second judgment module 3 is configured to judge whether the current scene is a scene requiring smooth animation when the first judgment module 1 judges that the current scene is a non-bandwidth-consuming scene.

The second frequency adjustment module 4 is configured to adjust the refresh frequency of the system according to the preset smooth refresh rate when the second determination module 3 determines that the current scene is a scene requiring smooth animation. Specifically, the second frequency adjustment module 4 includes: a smooth refresh rate acquisition unit for acquiring a preset smooth refresh rate for smooth animations; a smooth frequency modulation unit for adjusting the refresh rate of the system to the preset level by level Smooth refresh rate. It should be noted that the step-by-step adjustment method can effectively avoid the large-scale adjustment of the refresh frequency, achieve a smooth and excessive refresh frequency, and avoid obvious changes in the system interface.

The third frequency adjustment module 5 is configured to adjust the refresh frequency of the system according to the memory bandwidth of the host chip when the second determination module 3 determines that the current scene is a scene that does not require smooth animation.

Specifically, the third frequency adjustment module 5 includes: a bandwidth detection unit for periodically detecting the memory bandwidth of the host chip; a bandwidth judgment unit for judging whether the memory bandwidth of the host chip is lower than a preset bandwidth; a first frequency modulation unit , for reducing the refresh frequency of the system step by step according to the memory bandwidth of the host chip when the bandwidth judgment unit judges that the memory bandwidth of the host chip is lower than the preset bandwidth; the second frequency modulation unit is used for when the bandwidth judgment unit judges When the memory bandwidth of the host chip is not lower than the preset bandwidth, the first judgment module is driven.

It should be noted that the present invention realizes the periodic detection of the memory bandwidth through the bandwidth detection unit, and the first frequency modulation unit adjusts the refresh frequency of the system step by step according to the preset frequency modulation rule. Specifically, the preset frequency regulation rule is: when the memory bandwidth of the host chip exceeds 85%, the refresh rate is adjusted to 45 frames/second; when the memory bandwidth of the host chip exceeds 90%, the refresh rate is reduced to 30 frames/second ; When the memory bandwidth of the host chip exceeds 95%, reduce the refresh rate to 25 frames per second; when the memory bandwidth of the host chip exceeds 99%, reduce the refresh rate to 20 frames per second, but not limited by this.

Therefore, the present invention can dynamically adjust the refresh rate of the system according to the situation of the memory bandwidth and the actual application scene, and realizes the purpose of alleviating the shortage of bandwidth resources by using the software method, so as to achieve full utilization of system resources under the current hardware with limited resources, balance It improves the display effect and system performance, completes various complex vehicle functions (especially the function of the instrument with rich dynamic effects and the host), and solves the problem of stuck.

Correspondingly, the present invention also provides a computer device, comprising a memory and a processor, wherein the memory stores a computer program, and the processor implements the steps of the above-mentioned vehicle dual-screen multimedia dynamic frequency modulation method when the processor executes the computer program.

The above are the preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, without departing from the principles of the present invention, several improvements and modifications can also be made, and these improvements and modifications may also be regarded as It is the protection scope of the present invention.

Claims (8)

1. A dynamic frequency modulation method for vehicle-mounted double-screen multimedia is used in a host or a host chip supporting vehicle-mounted double-screen multimedia display, and is characterized by comprising the following steps:

judging whether the current scene is a bandwidth consumption scene or not, wherein the bandwidth is the memory bandwidth of a host chip;

if the current scene is a bandwidth consumption scene, adjusting the refresh frequency of the system according to a preset refresh rate lower limit;

if the current scene is a non-bandwidth-consuming scene, judging whether the current scene is a scene needing smooth animation,

if the current scene is a scene needing smooth animation, adjusting the refreshing frequency of the system according to a preset smooth refreshing rate; if the current scene is a scene which does not need smooth animation, adjusting the refreshing frequency of the system according to the memory bandwidth of the host chip; wherein, the step of adjusting the refresh frequency of the system according to the memory bandwidth of the host chip comprises: periodically detecting the memory bandwidth of a host chip; judging whether the memory bandwidth of the host chip is lower than a preset bandwidth or not; if the memory bandwidth of the host chip is lower than the preset bandwidth, gradually reducing the refreshing frequency of the system according to the memory bandwidth of the host chip; and if the memory bandwidth of the host chip is not lower than the preset bandwidth, re-judging whether the current scene is a bandwidth consumption scene.

2. The vehicle-mounted double-screen multimedia dynamic frequency modulation method according to claim 1, wherein the step of adjusting the refresh frequency of the system according to a preset refresh rate lower limit comprises:

acquiring a preset lower limit of a refresh rate of a current scene;

and gradually adjusting the refresh frequency of the system to the preset refresh rate lower limit.

3. The method for dynamically tuning multimedia data of claim 1, wherein the step of adjusting the refresh rate of the system according to the preset fluency refresh rate comprises:

acquiring a preset smooth refreshing rate of the smooth animation;

and gradually adjusting the refresh frequency of the system to the preset smooth refresh rate.

4. A vehicle-mounted dual-screen multimedia dynamic frequency modulation method according to claim 1, wherein the bandwidth consuming scene comprises any one or more of the following scenes: the method comprises the following steps of a scene that a touch event occurs in the double-screen starter, a scene that the double-screen starter operates navigation and voice, and a scene that the main-screen starter is used in a sliding mode and the auxiliary screen operates navigation and voice.

5. The utility model provides a vehicle-mounted double screen multimedia dynamic frequency modulation system which characterized in that includes:

the first judgment module is used for judging whether the current scene is a bandwidth consumption scene or not, wherein the bandwidth is the memory bandwidth of the host chip;

the first frequency adjusting module is used for adjusting the refreshing frequency of the system according to a preset refreshing rate lower limit when the first judging module judges that the current scene is the bandwidth consumption scene;

the second judging module is used for judging whether the current scene is a scene needing smooth animation or not when the first judging module judges that the current scene is a non-bandwidth-consuming scene;

the second frequency adjusting module is used for adjusting the refreshing frequency of the system according to a preset smooth refreshing rate when the second judging module judges that the current scene is the scene needing smooth animation;

the third frequency adjusting module is used for adjusting the refreshing frequency of the system according to the memory bandwidth of the host chip when the second judging module judges that the current scene is a scene without smooth animation; wherein the third frequency adjustment module comprises: the bandwidth detection unit is used for periodically detecting the memory bandwidth of the host chip; the bandwidth judging unit is used for judging whether the memory bandwidth of the host chip is lower than a preset bandwidth or not; the first frequency modulation unit is used for reducing the refreshing frequency of the system step by step according to the memory bandwidth when the bandwidth judgment unit judges that the memory bandwidth of the host chip is lower than the preset bandwidth; and the second frequency modulation unit is used for driving the first judgment module when the bandwidth judgment unit judges that the memory bandwidth of the host chip is not lower than the preset bandwidth.

6. The vehicle-mounted dual-screen multimedia dynamic frequency modulation system according to claim 5, wherein the first frequency adjustment module comprises:

the lower limit of the refresh rate acquiring unit is used for acquiring a preset lower limit of the refresh rate of the current scene;

and the lower limit frequency modulation unit is used for gradually adjusting the refresh frequency of the system to the preset refresh rate lower limit.

7. The vehicle-mounted dual-screen multimedia dynamic frequency modulation system according to claim 5, wherein the second frequency adjustment module comprises:

the smooth refresh rate acquisition unit is used for acquiring a preset smooth refresh rate of the smooth animation;

and the smooth frequency modulation unit is used for gradually adjusting the refreshing frequency of the system to the preset smooth refreshing rate.

8. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor, when executing the computer program, implements the steps of the method of any of claims 1 to 4.

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