CN102214442B - Screen switching method and electronic device using same - Google Patents
Screen switching method and electronic device using same Download PDFInfo
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- CN102214442B CN102214442B CN 201010138009 CN201010138009A CN102214442B CN 102214442 B CN102214442 B CN 102214442B CN 201010138009 CN201010138009 CN 201010138009 CN 201010138009 A CN201010138009 A CN 201010138009A CN 102214442 B CN102214442 B CN 102214442B
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Abstract
The invention provides a screen switching method, which is applied to an electronic device. The electronic device is provided with electronic paper for displaying an image signal, and a display having a backlight module. The method comprises the following steps of: judging whether a brightness value set by the backlight module exceeds a critical value; if so, allowing the display to display the image signal; otherwise, allowing the electronic paper to display the image signal.
Description
Technical field
The invention relates to a kind of screen switching and electronic installation, refer to especially a kind ofly do the screen switching of screens switch and make the electronic installation of screens switch according to light source of backlight module intensity according to light source of backlight module intensity.
Background technology
Promote the books digitizing along with publishing the dealer, to have more electronic publication future comes out, make the application of Electronic Paper (e-Paper) more and more to come into one's own, because Electronic Paper need not possess self-emitting light source, it passes through the external environment reflection of light as display light source, meet the demand of environmental protection and energy saving now, and the user needn't watch a display that possesses self-emitting light source for a long time, the user can be provided comparatively comfortable reading environment.
Yet, under the shortcoming of Electronic Paper is that environment is dim, Electronic Paper can can't be known not because of extraneous brightness and shows that to cause the user to read difficult, also therefore released on the market at present a kind of electronic installation in conjunction with Electronic Paper and liquid crystal display, allow the user voluntarily choice for use Electronic Paper or liquid crystal display as display screen, but utilize liquid crystal display as the display screen still selection of comparatively power consumption power after all.
In view of this, if the backlight module of above-mentioned liquid crystal display can be used as the light source of Electronic Paper under environment is dim a little, to avoid the dim a little liquid crystal display of just must selecting of environment as display screen, so just can further reach energy-conservation purpose, therefore want the direction of research and inquirement for the present invention.
Summary of the invention
Therefore, purpose of the present invention namely is to provide a kind of screen switching with electronic installation of double screen that is applied in.
So, screen switching of the present invention, be applied to an electronic installation, this electronic installation has to show that an Electronic Paper and of a picture signal has the display of a backlight module, the method comprises: judge (A) whether the brightness value that this backlight module is set surpasses a critical value, if carry out step (B); If not, carry out step (C); (B) make this display show this picture signal; (C) make this Electronic Paper show this picture signal; Wherein this backlight module can provide this Electronic Paper required light source.
Preferably, if this electronic installation just shows this picture signal by this Electronic Paper, and in this step (A), this brightness value surpasses this critical value, the method also comprises a step (D) between this step (A) and this step (B): this picture signal is stored in a storer of this electronic installation, and reads this picture signal in this storer and be sent to this display in step (B).
Preferably, in step (B), when this display shows this picture signal, make this Electronic Paper close.
Preferably, if this electronic installation just shows this picture signal by this display, and in this step (A), this brightness value does not surpass this critical value, the method also comprises a step (E) between this step (A) and this step (C): this picture signal is stored in a storer of this electronic installation, and reads this picture signal in this storer and be sent to this Electronic Paper in step (C).
Preferably, in this step (C), when this Electronic Paper shows this picture signal, make this display close.
Preferably, this brightness value is that a user interface by this electronic installation sets.
Preferably, this brightness value is that a photosensor senses external environment light intensity by this electronic installation sets.
Preferably, this brightness value can be forced to set in a user interface of this electronic installation.
Another object of the present invention is to provide a kind of electronic installation of using the changeable screen of above-mentioned screen switching.
Another object of the present invention is to provide a kind of electronic installation that takes full advantage of the changeable screen of backlight module.
So the electronic installation of changeable screen of the present invention is applicable to show a picture signal and comprises an Electronic Paper, a display, a brightness adjustment module, a control module and a judge module.Display comprises that a display panel and provides the backlight module of this display panel light source; The brightness adjustment module is set a brightness value of adjusting this backlight module with correspondence; Control module is selected this picture signal is delivered to this display or the wherein one demonstration of this Electronic Paper; Judge module judges whether this brightness value surpasses a critical value, if make this control module select that this picture signal is delivered to this display and show; If not, making this control module select that this picture signal is delivered to this Electronic Paper shows; Wherein, this display is the transparent liquid crystal display, and the one side of this display is connected with this Electronic Paper, and another side is towards a user; And this electronic installation also comprises a light guide plate that is arranged between this display and this Electronic Paper, this light guide plate in order to photoconduction that this backlight module is sent to this Electronic Paper top.
Preferably, this control module also comprises the storer of this picture signal of storage, when if this electronic installation is just showing that by this Electronic Paper this picture signal and this judge module judge that this brightness value surpasses this critical value, make this control module that this picture signal is temporary in this storer, then read this picture signal and deliver to this display demonstration from this storer.
Preferably, this control module makes this Electronic Paper close.
Preferably, this control module also comprises the storer of this picture signal of storage, when if this electronic installation is just showing that by this display this picture signal and this judge module judge that this brightness value does not surpass this critical value, make this control module that this picture signal is temporary in this storer, then read this picture signal and deliver to this Electronic Paper demonstration from this storer.
Preferably, this control module makes this display close.
Preferably, this backlight module is arranged at this display panel lateral margin.
Preferably, this electronic installation also comprises a user interface that connects this brightness adjustment module, and this brightness adjustment module is set this brightness value according to one first brightness adjusting signal at this user interface.
Preferably, this electronic installation also comprises the optical sensor of this brightness adjustment module of connection, this optical sensor is in order to sensing one external environment light intensity, and this brightness adjustment module is set this brightness value according to the second brightness adjusting signal that one of this optical sensor comprises the external environment intensity information.
Effect of the present invention is, is applied to electronic installation by screen switching, makes the Electronic Paper of electronic installation and display to do switching according to the brightness value that backlight module is set.And the light guide plate that arranges between Electronic Paper and display makes backlight module can supply with respectively Electronic Paper and display as display light source, to obtain to utilize fully and reach energy-conservation purpose.
Description of drawings
Fig. 1 is a process flow diagram, and the preferred embodiment of screen switching of the present invention is described;
Fig. 2 is a stereographic map, and the preferred embodiment of electronic installation of the present invention is described;
Fig. 3 is a schematic diagram, and the position relationship of Electronic Paper, liquid crystal display and the light guide plate of this electronic installation is described; And
Fig. 4 is a framework calcspar, and the annexation of this each member of electronic installation is described.
[main element label declaration]
1 electronic installation 10 lids
11 device body 20 optical sensors
21 user interface 22 signal input unit
23 South Bridge chip 24 north bridge chips
25 CPU (central processing unit) 251 brightness adjustment modules
252 control module 253 judge modules
26 random access memory 27 flash memories
28 control chip 29 power supplys
3 Electronic Paper 4 liquid crystal display
41 liquid crystal panel 42 backlight modules
421 illuminating part 5 light guide plate
901～910 steps
Embodiment
About aforementioned and other technology contents, characteristics and effect of the present invention, in the following detailed description that coordinates with reference to a graphic preferred embodiment, can clearly present.
Consult Fig. 1 and Fig. 2, be the preferred embodiment of screen switching of the present invention, the method is the electronic installation 1 that is applied to a changeable screen, and the electronic installation 1 of the present embodiment is take notebook computer (Notebook) as example, but not as limit.Consult Fig. 2, electronic installation 1 comprises a device body 11 and can relative device body 11 pivotables with device body 11 pivot joints and the lid 10 raising and cover, and as shown in Figure 3, the opposite sides of lid 10 (being the back side and front) is respectively equipped with an Electronic Paper (e-Paper) 3 and a liquid crystal display (LCD) 4 that is electrically connected to device body 11, and lid 10 device body 11 left and right pivotables relatively when raising state, and be available for users to select with Electronic Paper 3 or liquid crystal mesogens display 4 in the face of device body 11.When electronic installation (notebook computer) 1 operates in a plate mode (tablet mode), as shown in Figure 3, lid 10 is to be covered on device body 11 tops with Electronic Paper 3 towards device body 11, namely install body 11, Electronic Paper 3 and liquid crystal display 4 from bottom to top sequentially overlapped, and the liquid crystal mesogens display 4 of the present embodiment is transparent liquid crystal display (Transparent LCD).
Coordinate and consult Fig. 3, liquid crystal display 4 has a liquid crystal panel 41 and a backlight module 42.Liquid crystal panel 41 is overlapped on Electronic Paper 3, and having two, backlight module 42 is arranged at respectively liquid crystal panel 41 both sides and in order to the illuminating part 421 of liquid crystal panel 41 light sources to be provided, in the present embodiment, illuminating part 421 is light emitting diode, but not as limit, also can be cold-cathode tube.What deserves to be explained is, for the illuminating part 421 that utilizes backlight module 42 provides Electronic Paper 3 light sources, electronic installation 1 also comprises a light guide plate 5 that is arranged between Electronic Paper 3 and liquid crystal display 4 one sides, thus, the light that part illuminating part 421 sends can be by between light guide plate 5 guiding liquid crystal display 4 and Electronic Paper 3, therefore the illuminating part 421 of backlight module 42 can make Electronic Paper 3 be applicable to the more not enough situation of external environment light.
consult Fig. 4, device body 11 comprises a user interface (UI) 21, one is electrically connected to the signal input unit 22 at user interface 21, one is electrically connected to the South Bridge chip (South bridge chip) 23 of signal input unit 22, one is electrically connected to south emigrant's chip 23, the north bridge chips (North br idge chip) 24 of liquid crystal display 4 and Electronic Paper 3, one is electrically connected to the CPU (central processing unit) (CPU) 25 of north bridge chips 24, one is electrically connected to the random access memory (RAM) 26 of north bridge chips 24, one is electrically connected to the flash memory (Flash Memory) 27 of north bridge chips 24, one control chip (Control chip) 28 and that is electrically connected to CPU (central processing unit) 25 is electrically connected to the power supply 29 of control chip 28.Wherein, acting as of signal input unit 22, South Bridge chip 23, north bridge chips 24 and random access memory 26 is known, thus do not add to give unnecessary details, and flash memory 27 is in order to store picture signal to be shown.In the present embodiment, device body 11 is equipped with one with first operating system of liquid crystal display 4 as display screen, and one with second operating system of Electronic Paper 3 as display screen, in other words, when electronic installation 1 is selected with liquid crystal display 4 display frame signal, processed by the first operating system running; When electronic installation 1 is selected with Electronic Paper 3 display frame signal, processed by the second operating system running.It should be noted that, the first operating system (as Linux OS) is the main operating system of electronic installation, it need to be linked up with all hardware and the peripheral device of electronic installation 1, so start-up time is more of a specified duration, and the second operating system (as e-paper OS) mainly is responsible for the demonstration operation of Electronic Paper, not responsible other hardware and peripheral device with electronic installation linked up, therefore start-up time is shorter.And hardware and peripheral device in above-mentioned device body 11 are that two operating systems are used jointly.
As shown in Figure 2, user interface 21 is for exposing to the button of device body 11, and be available for users to operation and send one first brightness adjusting signal and give CPU (central processing unit) 25 via signal input unit 22, South Bridge chip 23, north bridge chips 24, make the corresponding screen intensity of adjusting electronic installations 1 of CPU (central processing unit) 25 (that is adjust backlight module 42 brightness).CPU (central processing unit) 25 has a brightness adjustment module 251, a control module 252 and a judge module 253.Brightness adjustment module 251 is in order to set a brightness value of adjusting backlight module 42 with correspondence; Control module 252 is in order to select that picture signal is delivered to liquid crystal display 4 or wherein one demonstration of Electronic Paper 3; Judge module 253 is in order to judge whether this brightness value surpasses a critical value, if make control module 253 select that picture signal is delivered to liquid crystal display 4 and show; If not, making control module 253 select that picture signal is delivered to Electronic Paper 3 shows.It should be noted that, brightness adjustment module 251, control module 252 and judge module 253 are to realize in the mode that software program drives hardware.
Coordinate and to consult Fig. 4 and as shown in the step 901 of Fig. 1, the user operates user interface 21 and sends the first brightness adjusting signal, this first brightness adjusting signal transfers to the brightness adjustment module 251 of CPU (central processing unit) 25 via signal input unit 22, South Bridge chip 23 and north bridge chips 24, brightness adjustment module 251 is set a brightness value of backlight module 42 according to this first brightness adjusting signal, and make control chip 28 change according to the brightness value that sets the voltage that power supply 29 is supplied with backlight module 42, to adjust the brightness of backlight module 42.
Then, as shown in step 902, judge module 253 judges whether the brightness value that backlight module 42 is set surpasses a critical value.In the present embodiment, the brightness value of backlight module 42 is divided into 1～10 grade, the luminosity that the 1st grade is backlight module 42 is minimum or not luminous, and the 10th the luminosity maximum that grade is backlight module 42, grade between the centre is sequentially different luminosity, and the critical value of the present embodiment setting toggle screen is the 5th grade.So, in step 902, if judge that present brightness value is between the 1st～5 grade, carry out step 903; If judge that present brightness value is between the 6th～10 grade (for the required brightness degree of backlight module of general liquid crystal display), carry out step 904.
Continue to consult Fig. 1, in step 903, whether judge module 253 can judge at present just by Electronic Paper 3 display frame signals again, if, as shown in step 905, judge module 253 makes control module 252 continue by Electronic Paper 3 display frame signals, namely needn't also not need switching operating system by toggle screen.If not, as shown in step 906, need toggle screen and switching operating system (being about to screen is switched to Electronic Paper 3 and switched to the second operating system by the first operating system by display 4), judge module 253 makes control module 252 that this picture signal that show at present is temporary in flash memory 27, unlocking electronic paper 3 also switches to the second operating system by the first operating system, and the first operating system is entered repair and sleep to save electric power.When the second operating system is opened, control module 252 reads this picture signal by flash memory 27 again and delivers to Electronic Paper 3 and shows this picture signal, as shown in step 907, at this moment, the part light source that backlight module 42 sends can be directed to Electronic Paper 3 via light guide plate 5, even Electronic Paper 3 still can be read in the more not enough situation of external surround lighting.Simultaneously, control module 252 is closed liquid crystal panel 42, to save electric power.It should be noted that, because liquid crystal display 4 is the transparent liquid crystal display, therefore the penetrable liquid crystal display 4 of user is seen the picture signal that Electronic Paper 3 is shown.
On the other hand, as shown in the step 904 of Fig. 1, judge module 253 can judge whether just by liquid crystal display 4 display frame signals again, if, as shown in step 908, judge module 253 makes control module 252 continue to make liquid crystal display 4 to show, namely needn't also not need switching operating system by toggle screen.If not, as shown in step 909, need toggle screen and switching operating system (being about to screen is switched to liquid crystal display 4 and the second operating system is switched to the first operating system by Electronic Paper 3), judge module 253 makes control module 252 that this present picture signal is temporary in flash memory 27, and unlatching liquid crystal display 4, simultaneously the second operating system is switched to the first operating system, and make the second operating system enter repairing sleep or close (because of its toggle speed very fast) to save electric power.When the first operating system unlatching, control module 252 reads this picture signal by flash memory 27 again and delivers to liquid crystal display 4 and shows these picture signals, as shown in step 910.Simultaneously, control module 252 will be closed Electronic Paper 3, to save electric power.
Can be learnt by foregoing, by the design of light guide plate 5, the light source of backlight module 42 can be supplied with Electronic Paper 3 as display light source, and Electronic Paper 3 can be used in the dim a little lower continuation of environment, reaches energy-conservation purpose.Moreover, another advantage of the present invention is, use efficiently backlight module 42, that is, when the brightness value of backlight module 42 is adjusted at the 1st～5 grade, during namely lower than the required brightness degree of general liquid crystal display, can be used as the display light source of Electronic Paper 3 by the guiding of light guide plate 5, compared to known backlight module can only operate in brightness value in the 6th～10 grade with liquid crystal display as display screen, therefore backlight module 42 of the present invention can be done effective utilization, and reaches energy-conservation purpose.
in addition, electronic installation 1 also comprises an optical sensor (Light sensor) 20, optical sensor 20 is in order to sensing one external environment light intensity, and send one and comprise the second brightness adjusting signal of external environment intensity information via signal input unit 22, South Bridge chip 23 and north bridge chips 24 transfer to the brightness adjustment module 251 of CPU (central processing unit) 25, brightness adjustment module 251 is set the brightness value of backlight module 42 according to this second brightness adjusting signal, and make control chip 28 change according to the brightness value that sets the voltage that power supply 29 is supplied with backlight module 42, to adjust the brightness of backlight module 42.Therefore, electronic installation 1 has two kinds of pipelines of adjusting the brightness of backlight module 42, it should be noted that, optical sensor 20 is automatically to adjust screen intensity (backlight module 42 brightness), and user interface 21 is to adjust passively screen intensity (backlight module 42 brightness).And by this brightness adjustment module 251 of initial setting, when the dissatisfied self-adjusting screen intensity of user, can operate user interface 21 and set brightness values in brightness adjustment module 251 forcibly by the first brightness adjusting signal, to satisfy user's self-demand.
Additional disclosure be, if electronic installation 1 is only installed the 3rd operating system that can control simultaneously Electronic Paper 3 and liquid crystal display 4, when execution in step 906 and step 909,253 of judge modules needn't carry out the start of switching operating system, only need carry out the screens switch action and get final product.
In sum, be applied to electronic installation 1 by screen switching of the present invention, make the Electronic Paper 3 of electronic installation 1 can do switching according to the brightness value that backlight module 42 is set with liquid crystal display 4.And, the light guide plate 5 that arranges between Electronic Paper 3 and liquid crystal display 4, make the backlight module 42 can be respectively when different brightness degree, supply with respectively Electronic Paper 3 and liquid crystal display 4 as display light source, utilize fully and reach energy-conservation purpose obtaining, therefore really can reach purpose of the present invention.
The above person of thought, it is only preferred embodiment of the present invention, when not limiting scope of the invention process with this, the simple equivalence of namely generally doing according to claim scope of the present invention and invention description content changes and modifies, and all still belongs in the scope that claim of the present invention contains.
Claims (16)
1. a screen switching, be applied to an electronic installation, and this electronic installation has to show that an Electronic Paper and of a picture signal has the display of a backlight module, and the method comprises:
(A) judge whether the brightness value that this backlight module is set surpasses a critical value, if carry out step (B); If not, carry out step (C);
(B) make this display show this picture signal; And
(C) make this Electronic Paper show this picture signal;
Wherein this backlight module can provide this Electronic Paper required light source.
2. screen switching according to claim 1, wherein, if this electronic installation just shows this picture signal by this Electronic Paper, and in this step (A), this brightness value surpasses this critical value, and the method also comprises a step (D) between this step (A) and this step (B):
This picture signal is stored in a storer of this electronic installation, and reads this picture signal in this storer and be sent to this display in step (B).
3. screen switching according to claim 2, wherein, in step (B), when this display shows this picture signal, make this Electronic Paper close.
4. screen switching according to claim 1, wherein, if this electronic installation just shows this picture signal by this display, and in this step (A), this brightness value surpasses this critical value, and the method also comprises a step (E) between this step (A) and this step (C):
This picture signal is stored in a storer of this electronic installation, and reads this picture signal in this storer and be sent to this Electronic Paper in step (C).
5. screen switching according to claim 4, wherein, in this step (C), when this Electronic Paper shows this picture signal, make this display close.
6. screen switching according to claim 1, wherein, this brightness value is that the user interface by this electronic installation sets.
7. screen switching according to claim 1, wherein, this brightness value is that the photosensor senses external environment light intensity by this electronic installation sets.
8. screen switching according to claim 7, wherein, this brightness value can be forced to set in a user interface of this electronic installation.
9. the electronic installation of a changeable screen, be applicable to show a picture signal, and this electronic installation comprises:
One Electronic Paper;
One display comprises that a display panel and provides the backlight module of this display panel light source;
One brightness adjustment module is set a brightness value of adjusting this backlight module with correspondence;
One control module, selection is delivered to this display or the wherein one demonstration of this Electronic Paper with this picture signal; And
One judge module judges whether this brightness value surpasses a critical value, if make this control module select that this picture signal is delivered to this display and show; If not, making this control module select that this picture signal is delivered to this Electronic Paper shows;
Wherein, this display is the transparent liquid crystal display, and the one side of this display is connected with this Electronic Paper, and another side is towards a user; And
This electronic installation also comprises a light guide plate that is arranged between this display and this Electronic Paper, this light guide plate in order to photoconduction that this backlight module is sent to this Electronic Paper top.
10. the electronic installation of changeable screen according to claim 9, wherein, this control module also comprises the storer of this picture signal of storage, when if this electronic installation is just showing that by this Electronic Paper this picture signal and this judge module judge that this brightness value surpasses this critical value, make this control module that this picture signal is temporary in this storer, then read this picture signal and deliver to this display demonstration from this storer.
11. the electronic installation of changeable screen according to claim 10, wherein, this control module makes this Electronic Paper close.
12. the electronic installation of changeable screen according to claim 9, wherein, this control module also comprises the storer of this picture signal of storage, when if this electronic installation is just showing that by this display this picture signal and this judge module judge that this brightness value does not surpass this critical value, make this control module that this picture signal is temporary in this storer, then read this picture signal and deliver to this Electronic Paper demonstration from this storer.
13. the electronic installation of changeable screen according to claim 12, wherein, this control module makes this display close.
14. the electronic installation of changeable screen according to claim 9, wherein, this backlight module is arranged at this display panel lateral margin.
15. the electronic installation of changeable screen according to claim 9 also comprises a user interface that connects this brightness adjustment module, and this brightness adjustment module is set this brightness value according to one first brightness adjusting signal at this user interface.
16. the electronic installation of changeable screen according to claim 9, the optical sensor that also comprises this brightness adjustment module of connection, this optical sensor is in order to sensing one external environment light intensity, and this brightness adjustment module is set this brightness value according to the second brightness adjusting signal that one of this optical sensor comprises the external environment intensity information.
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| CN 201010138009 CN102214442B (en) | 2010-04-02 | 2010-04-02 | Screen switching method and electronic device using same |
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| CN 201010138009 CN102214442B (en) | 2010-04-02 | 2010-04-02 | Screen switching method and electronic device using same |
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| CN102685390A (en) * | 2012-04-24 | 2012-09-19 | 苏州佳世达电通有限公司 | Electronic device |
| CN102956184A (en) * | 2012-10-18 | 2013-03-06 | 苏州佳世达电通有限公司 | Display switchover method and electronic device |
| TW201447862A (en) * | 2013-06-03 | 2014-12-16 | Fitipower Integrated Tech Inc | Display control system and method |
| CN103561164A (en) * | 2013-10-17 | 2014-02-05 | 深圳市欧珀通信软件有限公司 | Method and device for screen switching of double-screen mobile phone |
| CN104298337A (en) * | 2014-09-22 | 2015-01-21 | 叶尔肯·拜山 | Electronic terminal |
| CN105912287B (en) * | 2016-03-31 | 2019-03-08 | 联想(北京)有限公司 | A kind of display methods, device and equipment |
| CN106227478A (en) * | 2016-07-13 | 2016-12-14 | 努比亚技术有限公司 | A kind of positive and negative screen switching device, method and mobile terminal |
| EP3525075B1 (en) * | 2016-10-25 | 2020-11-25 | Huawei Technologies Co., Ltd. | Method for lighting up screen of double-screen terminal, and terminal |
| CN106775543A (en) * | 2017-01-19 | 2017-05-31 | 宇龙计算机通信科技(深圳)有限公司 | A kind of terminal display control method and device |
| CN108831295A (en) * | 2018-04-26 | 2018-11-16 | 努比亚技术有限公司 | A kind of screen assembly and terminal |
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| KR100623035B1 (en) * | 2003-09-30 | 2006-09-12 | 세이코 엡슨 가부시키가이샤 | Image display device |
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