CN104123111A - Display mode switching method and device of MIPI DSI - Google Patents
Display mode switching method and device of MIPI DSI Download PDFInfo
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- CN104123111A CN104123111A CN201410250044.XA CN201410250044A CN104123111A CN 104123111 A CN104123111 A CN 104123111A CN 201410250044 A CN201410250044 A CN 201410250044A CN 104123111 A CN104123111 A CN 104123111A
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Abstract
The invention provides a display mode switching method and device of an MIPI DSI. The method includes the steps that identification information and frame rate demands of one or more applications are correspondingly recorded in an application frame rate demand table in advance; when the applications are to be executed or switched to, the frame rate demands of the applications which are to be executed or switched to are acquired from the application frame rate demand table based on the identification information of the applications which are to be executed or switched to; the display modes of the applications which are to be executed or switched to can be determined according to the frame rate demands of the applications which are to be executed or switched to; the display modes can be correspondingly switched according to the display modes of the applications which are to be executed or switched to.
Description
Technical field
The present invention relates to mobile industry processor interface-serial display interface (MIPI DSI) demonstration field, specifically, relate to display mode switching method and the device of a kind of MIPI DSI.
Background technology
MIPI DSI is the display standard of facing mobile apparatus, supports video mode (video mode) and these two kinds of display modes of command mode (command mode).Under video mode, do not use special data-signal transmitting synchronous information, control signal and RGB data are passed through MIPI bus transfer with the form of message, and because main frame need to continue refresh display, therefore display does not need frame buffer.Under command mode, MIPI bus controller uses display command message to send pixel data stream to display, display needs the long frame buffer of full frame to store all pixel datas, once data are placed in the frame buffer of display, timing controller will take out data from frame buffer, and automatically they are presented on screen, therefore MIPI bus controller does not need regular refresh display.
Two kinds of display modes of MIPI DSI respectively have relative merits: the in the situation that of low frame per second demand (being generally lower than 30fps), video mode regularly sends DSI video message with fast mode, and this can consume a large amount of electric weight; And the in the situation that of high frame per second demand (more than being generally 30fps), for the frame per second identical with video mode is provided, command mode need to be operated in the clock frequency higher compared with video mode, can consume on the contrary more electric energy.
Therefore, need a kind of method of switching according to current frame per second demand between video mode and command mode, thereby reduce on the whole the power consumption in when operation and extend the service time of battery of mobile device.
Summary of the invention
The present invention can solve at least above problem and/or shortcoming and at least following advantage is provided.But, be understood that: the present invention is without overcoming above-mentioned shortcoming, and can not overcome any problem in the problems referred to above.
According to an aspect of the present invention, provide the display mode switching method of a kind of MIPI DSI, described method comprises: in advance the identification information of one or more application and frame per second demand are recorded in application frame per second demand schedule accordingly; In the time will carrying out or be switched to application, the identification information of the application based on carrying out or be switched to obtains the frame per second demand of the application that will carry out or be switched to from application frame per second demand schedule; Determine the display mode of the application that will carry out or be switched to according to the frame per second demand of the application that will carry out or be switched to; Correspondingly switch display mode according to the display mode of the application that will carry out or be switched to.
According to a further aspect in the invention, the display mode switching device shifter of a kind of MIPI DSI is provided, described device comprises: frame per second demand history unit, is configured in advance the identification information of one or more application and frame per second demand are recorded in application frame per second demand schedule accordingly; Frame per second demand obtains unit, is configured in the time will carrying out or be switched to application, and the identification information of the application based on carrying out or be switched to obtains the frame per second demand of the application that will carry out or be switched to from application frame per second demand schedule; Display mode determining unit, is configured to determine according to the frame per second demand of the application that will carry out or be switched to the display mode of the application that will carry out or be switched to; Display mode switch unit, is configured to correspondingly switch display mode according to the display mode of the application that will carry out or be switched to.
Brief description of the drawings
By the description below in conjunction with accompanying drawing, the above-mentioned and other side of certain exemplary embodiments of the present invention, feature and advantage will become clearer, wherein:
Fig. 1 is the process flow diagram illustrating according to the display mode switching method of the MIPI DSI of exemplary embodiment;
Fig. 2 is the process flow diagram illustrating according to the display mode switching method of the MIPI DSI of another exemplary embodiment;
Fig. 3 is the schematic diagram illustrating according to the application frame per second demand schedule of exemplary embodiment;
Fig. 4 is the block diagram illustrating according to the display mode switching device shifter of the MIPI DSI of exemplary embodiment.
Embodiment
Hereinafter, describe with reference to the accompanying drawings exemplary embodiment of the present invention in detail.In instructions and accompanying drawing, the element of roughly the same function is all carried out in identical drawing reference numeral instruction.Be not necessarily to scale accompanying drawing, and can amplify or omit some feature, to clearly show that and explain the present invention.In the following description, can omit known correlation function and the detailed description of structure, in order to avoid fuzzy theme of the present invention unnecessarily.
Fig. 1 is the process flow diagram illustrating according to the display mode switching method of the MIPI DSI of exemplary embodiment.
With reference to Fig. 1, when carrying out or when switch application, in step 101, mobile device can be according to the application that will carry out or be switched to (, will be presented at the application on the display screen of mobile device, be designated hereinafter simply as " newly application ") identification information obtain the frame per second demand of new application from pre-stored application frame per second demand schedule mobile device.Fig. 3 is the schematic diagram illustrating according to the application frame per second demand schedule of exemplary embodiment.Particularly, in application frame per second demand schedule as shown in Figure 3, apply names, version number and the frame per second demand of each application can be by record accordingly.Only as example, mobile device can be retrieved according to the apply names of new application and version number in application frame per second demand schedule, to obtain the frame per second demand that records accordingly with apply names and the version number of the newly application frame per second demand as new application.In addition, mobile device can be retrieved according to other identification information of new application, is not limited to apply names and version number.
After this,, in step 103, mobile device can be determined according to the frame per second demand of new application the display mode of new application.Particularly, in the time that the frame per second demand of new application is less than height frame per second boundary, mobile device can be defined as command mode by the display mode of newly application; In the time that the frame per second demand of new application is more than or equal to height frame per second boundary, mobile device can be defined as video mode by the display mode of newly application.In general, height frame per second boundary is 30fps, but the invention is not restricted to this.
In addition, in the time that the display mode of new application is video mode, mobile device can be determined according to the frame per second demand of new application the refresh rate of new application.Particularly, for n level refresh rate R from low to high
0～R
n-1, at the frame per second demand R of new application
d< R
n-1situation under, mobile device can by newly application refresh rate be defined as R
m, make R
m-1< R
d≤ R
m(1≤m < n); At the frame per second demand R of new application
d>=R
n-1situation under, mobile device can by newly application refresh rate be defined as R
n-1.Here only as example, suppose to have 2 grades of refresh rate R from low to high,
0, R
1and R
2if, the frame per second demand R of new application
dmeet R
d< R
0, mobile device can be defined as R by the refresh rate of newly application
0; If the frame per second demand R of new application
dmeet R
d=R
1, mobile device can be defined as R by the refresh rate of newly application
1; If the frame per second demand R of new application
dmeet R
1< R
d< R
2, mobile device can be defined as R by the refresh rate of newly application
2; If the frame per second demand R of new application
dmeet R
d>=R
2, mobile device can be defined as R by the refresh rate of newly application
2.
After this,, in step 105, mobile device can be by comparing to switch display mode by the display mode of current use and the display mode of new application.Only as example, mobile device can be by display mode and the pre-recorded < display mode in mobile device of newly application, the display mode of the current use in refresh rate > bis-tuples compares, in the time that the display mode of new application is identical with the display mode of current use, mobile device can be determined does not need to change display mode; In the time that the display mode of new application is different with the display mode of current use, mobile device can be determined need to change display module, and display mode is switched to the display mode of new application.
In addition, in the time that the display mode of new application is video mode, mobile device can be by comparing the refresh rate of current use and the refresh rate of new application to determine whether need to change refresh rate.Only as example, mobile device can be by refresh rate and the pre-recorded < display mode in mobile device of newly application, the refresh rate of the Set For Current in refresh rate > bis-tuples compares, in the time that the refresh rate of new application is identical with the refresh rate of Set For Current, mobile device can be determined does not need to change refresh rate; In the time that the refresh rate of new application is different with the refresh rate of Set For Current, mobile device can be determined need to change refresh rate, and refresh rate is re-set as to the refresh rate of new application.
Fig. 2 is the process flow diagram illustrating according to the display mode switching method of the MIPI DSI of another exemplary embodiment.
In the display mode switching method of MIPI DSI as shown in Figure 2, step 201 is similar with 103 to step 101 described above respectively with 203, therefore no longer described step is repeated in this description.
With reference to Fig. 2, in step 205, mobile device can be by comparing the display mode of current use and the display mode of new application to determine whether need to change display mode.Particularly, mobile device can be by display mode and the pre-recorded < display mode in mobile device of newly application, the display mode of the current use in refresh rate > bis-tuples compares, in the time that the display mode of new application is identical with the display mode of current use, mobile device can be determined does not need to change display mode; In the time that the display mode of new application is different with the display mode of current use, mobile device can be determined need to change display module.
After this,, in the time that needs change display mode (205-is), in step 207, mobile device can determine whether the display mode of new application is video mode.
In the time that the display mode of new application is not video mode (, the display mode of new application is command mode) and (207-is no), in step 209, mobile device can be switched to command mode by display mode.In addition, mobile device can be updated to < display mode by the display mode being switched to, refresh rate > bis-tuples.
Get back to step 207, in the time that the display mode of new application is video mode (207-is), in step 211, mobile device can determine whether the display mode of current use is command mode.
In the time that the display mode of current use is command mode (211-is), in step 213, mobile device can be switched to video mode by display mode.In addition, mobile device can be updated to < display mode by the display mode being switched to, refresh rate > bis-tuples.
After this,, in step 215, mobile device can be by comparing the refresh rate of current use and the refresh rate of new application to determine whether need to change refresh rate.Particularly, mobile device can be by comparing the refresh rate of current use and the refresh rate of new application to determine whether need to change refresh rate.Particularly, mobile device can be by refresh rate and the pre-recorded < display mode in mobile device of newly application, the refresh rate of the Set For Current in refresh rate > bis-tuples compares, in the time that the refresh rate of new application is identical with the refresh rate of Set For Current, mobile device can be determined does not need to change refresh rate; In the time that the refresh rate of new application is different with the refresh rate of Set For Current, mobile device can be determined need to change refresh rate.In addition, before determining whether to change refresh rate, mobile device can be determined according to the frame per second demand of new application the refresh rate of new application.Owing to having described this step with reference to Fig. 1 hereinbefore, be therefore no longer repeated in this description.
In the time that needs change refresh rate (215-is), in step 217, mobile device can be set to the new refresh rate of applying by refresh rate.In addition, mobile device can be updated to < display mode by the refresh rate after arranging, refresh rate > bis-tuples.
In the time not needing to change refresh rate (215-is no), process and directly finish.
Get back to step 205, in the time not needing to change display mode (205-is no), process and proceed directly to step 215.
Get back to step 211, in the time that the display mode of current use is not command mode (211-is no), processes and proceed directly to step 215.
By the display mode switching method of MIPI DSI as depicted in figs. 1 and 2, mobile device can be realized the command mode of selecting low-power consumption in the situation that frame per second demand is low, in the situation that frame per second demand is high, select the video mode of relatively low power consumption and according to frame per second demand, suitable refresh rate be set, to reduce power consumption and to extend service time of battery.
Fig. 4 is the block diagram illustrating according to the configuration of the display mode switching device shifter 400 that can carry out the MIPI DSI dynamically switching between the display mode of MIPI DSI of exemplary embodiment.
With reference to Fig. 4, the display mode switching device shifter 400 of MIPI DSI can comprise that frame per second demand history unit 410, frame per second demand search unit 430, display mode determining unit 450 and display mode switch unit 470.
Frame per second demand history unit 410 can be recorded in the apply names of one or more application, version number and frame per second demand in application frame per second demand schedule as shown in Figure 3 in advance accordingly.In addition, frame per second demand history unit can, by other identification information recording of application in application frame per second demand schedule, be not limited to apply names and version number.
When carrying out or when switch application, frame per second demand is searched unit 430 can be according to the application that will carry out or be switched to (, will be presented at the application on the display screen of mobile device, be designated hereinafter simply as " newly application ") identification information obtain the frame per second demand of new application from pre-stored application frame per second demand schedule mobile device.Fig. 3 is the schematic diagram illustrating according to the application frame per second demand schedule of exemplary embodiment.Particularly, in application frame per second demand schedule as shown in Figure 3, apply names, version number and the frame per second demand of each application can be by record accordingly.Only as example, frame per second demand is searched unit 430 and can in application frame per second demand schedule, be retrieved according to the apply names of new application and version number, to obtain the frame per second demand that records accordingly with apply names and the version number of the newly application frame per second demand as new application.In addition, frame per second demand is searched unit 430 and can be retrieved according to other identification information of new application, is not limited to apply names and version number.
Display mode determining unit 450 can be determined according to the frame per second demand of new application the display mode of new application.Particularly, in the time that the frame per second demand of new application is less than height frame per second boundary, frame per second demand is searched unit 430 can be defined as command mode by the display mode of newly application; In the time that the frame per second demand of new application is more than or equal to height frame per second boundary, frame per second demand is searched unit 430 can be defined as video mode by the display mode of newly application.In general, height frame per second boundary is 30fps, but the invention is not restricted to this.
In addition, in the time that the display mode of new application is video mode, frame per second demand is searched unit 430 can determine the new refresh rate of applying according to the frame per second demand of new application.Particularly, for n level refresh rate R from low to high
0～R
n-1, at the frame per second demand R of new application
d< R
n-1situation under, frame per second demand search unit 430 can by newly application refresh rate be defined as R
m, make R
m-1< R
d≤ R
m(1≤m < n); At the frame per second demand R of new application
d>=R
n-1situation under, frame per second demand search unit 430 can by newly application refresh rate be defined as R
n-1.
Display mode switch unit 470 can be by comparing to switch display mode by the display mode of current use and the display mode of new application.Only as example, display mode determining unit 450 can be by display mode and the pre-recorded < display mode in mobile device of newly application, the display mode of the current use in refresh rate > bis-tuples compares, in the time that the display mode of new application is identical with the display mode of current use, display mode determining unit 450 can be determined does not need to change display mode; In the time that the display mode of new application is different with the display mode of current use, display mode determining unit 450 can be determined need to change display module, and display mode is switched to the display mode of new application.
In addition, in the time that the display mode of new application is video mode, display mode determining unit 450 can be by comparing the refresh rate of current use and the refresh rate of new application to determine whether need to change refresh rate.Only as example, display mode determining unit 450 can be by refresh rate and the pre-recorded < display mode in mobile device of newly application, the refresh rate of the Set For Current in refresh rate > bis-tuples compares, in the time that the refresh rate of new application is identical with the refresh rate of Set For Current, display mode determining unit 450 can be determined does not need to change refresh rate; In the time that the refresh rate of new application is different with the refresh rate of Set For Current, display mode determining unit 450 can be determined need to change refresh rate, and refresh rate is re-set as to the refresh rate of new application.
According to the display mode switching device shifter 400 of the MIPI DSI of embodiment as shown in Figure 4 applicable to various mobile devices known in those skilled in the art.Be equipped with the mobile device of the display mode switching device shifter of this MIPI DSI can realize the command mode of selecting low-power consumption in the situation that frame per second demand is low, in the situation that frame per second demand is high, select the video mode of relatively low power consumption, and according to frame per second demand, suitable refresh rate is set, to reduce power consumption and to extend service time of battery.
In this manual, mobile device can represent to use any electronic installation of MIPI DSI display standard, includes but not limited to mobile phone, smart phone, panel computer and personal digital assistant (PDA).The method according to this invention and device can be implemented as hardware or firmware or be implemented as software or computer code, also can be implemented as the combination of above-mentioned situation.
Although describe hereinbefore exemplary embodiment of the present invention in detail, be not intended these embodiment and describe likely form of the present invention.Be understood that: in the case of not departing from the spirit and scope of the present invention that are defined by the claims, can make in form and details various changes.
Claims (10)
1. a display mode switching method for mobile industry processor interface-serial display interface (MIPI DSI), comprising:
In advance the identification information of one or more application and frame per second demand are recorded in application frame per second demand schedule accordingly;
In the time will carrying out or be switched to application, the identification information of the application based on carrying out or be switched to obtains the frame per second demand of the application that will carry out or be switched to from application frame per second demand schedule;
Determine the display mode of the application that will carry out or be switched to according to the frame per second demand of the application that will carry out or be switched to;
Correspondingly switch display mode according to the display mode of the application that will carry out or be switched to.
2. the display mode switching method of MIPI DSI as claimed in claim 1, wherein, identification information comprises apply names and version number, and identification information is obtained from the installation kit of application, and frame per second demand is obtained or specified by user from the installation kit of application.
3. the display mode switching method of MIPI DSI as claimed in claim 1, wherein, the step of the frame per second demand of the application that acquisition will be carried out or be switched to comprises: search in application frame per second demand schedule according to the identification information of the application that will carry out or be switched to, to obtain and at least one corresponding frame per second demand in the identification information of the application that will carry out or be switched to.
4. the display mode switching method of MIPI DSI as claimed in claim 1, wherein, determine that the step of the display mode of the application that will carry out or be switched to comprises:
In the time that the frame per second demand of the application that will carry out or be switched to is less than height frame per second boundary, the display mode of the application that will carry out or be switched to is defined as command mode;
In the time that the frame per second demand of the application that will carry out or be switched to is more than or equal to height frame per second boundary, the display mode of the application that will carry out or be switched to is defined as video mode,
Wherein, height frame per second boundary is 30fps.
5. the display mode switching method of MIPI DSI as claimed in claim 4, wherein, determine that the step of the display mode of the application that will carry out or be switched to also comprises:
In the time that the display mode of the application that will carry out or be switched to is confirmed as video mode, determine the refresh rate of the application that will carry out or be switched to according to the frame per second demand of the application that will carry out or be switched to;
According to the refresh rate of the application that will carry out or be switched to, refresh rate is correspondingly set.
6. the display mode switching method of MIPI DSI as claimed in claim 5, wherein, determine that the step of the refresh rate of the application that will carry out or be switched to comprises:
For n level refresh rate R from low to high
0～R
n-1, as the frame per second demand R of the application that will carry out or be switched to
d< R
n-1time, the refresh rate R of the definite application that will carry out or be switched to
m, make R
m-1< R
d≤ R
m, wherein 1≤m < n; As the frame per second demand R of the application that will carry out or be switched to
d>=R
n-1time, the refresh rate R of the definite application that will carry out or be switched to
n-1.
7. the display mode switching method of MIPI DSI as claimed in claim 1, wherein, the step of correspondingly switching display mode according to the display mode of the application that will carry out or be switched to comprises:
Determine whether to switch display mode by comparing the display mode of the application that will carry out or be switched to the display mode of using before execution or switch application;
In the time determining switching display mode, display mode is switched to the display mode of the application that will carry out or be switched to.
8. the display mode switching method of MIPI DSI as claimed in claim 7, also comprises:
In advance the display mode and the refresh rate that before execution or switch application, use are recorded in to < display mode, in refresh rate > bis-tuples,
Wherein, determine whether that the step of switching display mode comprises: when display mode and the < display mode of the application that will carry out or be switched to, when the display mode that records in refresh rate > bis-tuples is identical, do not switch display mode; When display mode and the < display mode of the application that will carry out or be switched to, when the display mode recording is different, switch display mode in refresh rate > bis-tuples.
9. the display mode switching method of MIPI DSI as claimed in claim 5, also comprises:
In advance the display mode and the refresh rate that before execution or switch application, use are recorded in to < display mode, in refresh rate > bis-tuples,
Wherein, the step that according to the refresh rate of the application that will carry out or be switched to refresh rate is correspondingly set comprises: by the refresh rate of the application that relatively will carry out or be switched to carry out or switch application before the refresh rate used determine whether to arrange refresh rate; When determining that refresh rate is set to the refresh rate of the application that will carry out or be switched to when refresh rate is set,
Wherein, determine whether that the step that refresh rate is set comprises: when refresh rate and the < display mode of the application that will carry out or be switched to, when the refresh rate that records is identical, refresh rate is not set in refresh rate > bis-tuples; When refresh rate and the < display mode of the application that will carry out or be switched to, when the refresh rate recording is different, refresh rate is set in refresh rate > bis-tuples.
10. a display mode switching device shifter for mobile industry processor interface-serial display interface (MIPI DSI), comprising:
Frame per second demand history unit, is configured in advance the identification information of one or more application and frame per second demand are recorded in application frame per second demand schedule accordingly;
Frame per second demand obtains unit, is configured in the time will carrying out or be switched to application, and the identification information of the application based on carrying out or be switched to obtains the frame per second demand of the application that will carry out or be switched to from application frame per second demand schedule;
Display mode determining unit, is configured to determine according to the frame per second demand of the application that will carry out or be switched to the display mode of the application that will carry out or be switched to;
Display mode switch unit, is configured to correspondingly switch display mode according to the display mode of the application that will carry out or be switched to.
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