CN101183517A - Method, device and terminal for regulating brightness of LCD on terminal equipment - Google Patents
Method, device and terminal for regulating brightness of LCD on terminal equipment Download PDFInfo
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- CN101183517A CN101183517A CNA2007101959519A CN200710195951A CN101183517A CN 101183517 A CN101183517 A CN 101183517A CN A2007101959519 A CNA2007101959519 A CN A2007101959519A CN 200710195951 A CN200710195951 A CN 200710195951A CN 101183517 A CN101183517 A CN 101183517A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0626—Adjustment of display parameters for control of overall brightness
Abstract
The invention discloses a method to adjust the brightness of the LCD display of the terminal equipment, comprising the following steps: a) when the application mode is switched on, a duty ratio corresponding to the application mode to be switched and pre-saved is acquired; b) a PWM (Pulse-Width Modulation) signal with the duty ratio is generated; c) the average current on the power supply circuit of the LCD display to be switched to the application mode is adjusted with the PWM signal to change the brightness of the LCD display. Also, the invention discloses a device to adjust the brightness of the LCD display of the terminal equipment. The invention has the advantages that with the method and the device, the brightness of the display can be adjusted when the display switching to the other application mode; meanwhile, the aims of energy saving and eye protection functions as well as low cost can be achieved.
Description
Technical field
The present invention relates to electronic technology field, relate in particular to method, device and the terminal of LCD on a kind of realization terminal device (LCD, Liquid Crystal Display) automatic brightness adjustment.
Background technology
At present, moving etc. on the various communication terminal devices, generally include LCD display and be used for information such as video data.But on total power consumption (being called for short " power consumption "), LCD can account for sizable ratio for this terminal device with LCD display.Therefore, along with the function of terminal device from strength to strength, corresponding power consumption is also increasing, how to reduce power consumption, especially in the service time that how to prolong equipment on the portable terminal under limited battery capacity, is called the important topic of each device fabrication manufacturer research.
The disclosed a kind of method that can reduce the power consumption of LCD by the brightness of manual adjustments LCD of prior art is: for the LCD display that can provide the different application pattern to select for the user, the user can manually be provided with the brightness value of lcd screen correspondence according to the different application pattern of current use.For example, if read text, because the background of text is generally highlighted pure colors such as white, and color is more single, at this moment, the brightness of LCD can be provided with tell somebody what one's real intentions are, long-time like this browse text and not only can save power consumption, but also can alleviate visual fatigue.
Yet in carrying out the invention process, the inventor finds that there are the following problems at least in the prior art:
Because the brightness of adjusting LCD of the prior art can only be passed through user's manual adjustments, brightness for follow-up whole use, all can be worked under this brightness after being adjusted to a kind of degree.Especially for the terminal device that has connected many LCD simultaneously, after the manual adjustments, all LCD can be operated under this brightness, like this, if the application model of every LCD is not simultaneously, then can't select the brightness corresponding with it according to the practical application of separately LCD.At this moment, relatively poor to the dirigibility of many LCD, simultaneously, in using, switched application model, then also need the corresponding brightness of manual adjustments once more, therefore use inconvenient.
Summary of the invention
The purpose of the embodiment of the invention is to provide a kind of method of regulating LCD brightness on the terminal device, device, and terminal, and the screen intensity that can regulate LCD according to different application self-adapting ground reach and reduce the LCD power consumption, the purpose of the eyeshield of economizing on electricity.
A kind of method that realizes LCD brightness on the terminal device of regulating that the embodiment of the invention provides, described method comprises:
When the switch application pattern, obtain the pairing dutyfactor value of preserving in advance of the application model with to be switched;
Generation has the pulse width modulation pwm signal of described dutyfactor value;
Use described pwm signal to regulate the average current of the feed circuit of the LCD that will switch to this application model, to change the brightness of described LCD.
Based on technique scheme, the embodiment of the invention also discloses a kind of device that is used to regulate LCD brightness on the terminal device, this device comprises:
At least one application module is respectively applied for to LCD provides the application model corresponding with this module, and in the time will switching to this application model, exports the dutyfactor value of this application model correspondence;
The LCD brightness control module is used to obtain the dutyfactor value that is sent by described application module, and generation and output device have the pwm signal of described dutyfactor value;
The LCD power management module, be used to LCD that power supply is provided, and use the pwm signal that comes from described LCD brightness control module to regulate the average current of the feed circuit of the LCD that will switch to this application model, to change the brightness of described LCD.
Based on technique scheme, the embodiment of the invention also discloses a kind of terminal, comprising: regulate the device of LCD brightness, described device comprises:
At least one application module is respectively applied for to LCD provides the application model corresponding with this module, and in the time will switching to this application model, exports the dutyfactor value of this application model correspondence;
The LCD brightness control module is used to obtain the dutyfactor value that is sent by described application module, and generation and output device have the pwm signal of described dutyfactor value;
The LCD power management module, be used to LCD that power supply is provided, and use the pwm signal that comes from described LCD brightness control module to regulate the average current of the feed circuit of the LCD that will switch to this application model, to change the brightness of described LCD.
Compared with prior art, the embodiment of the invention has the following advantages:
The embodiment of the invention is because when the switch application pattern, can regulate the average current of the feed circuit of LCD automatically according to the dutyfactor value of described application module correspondence, thereby change the brightness of LCD by the size of current of power supply, therefore, reach the effect that intelligence is regulated.Simultaneously; owing to switch in time; not only make different application models in time reach best display effect; the protection eyes; and especially for the terminal device that has connected many LCD simultaneously; owing to can independently regulate brightness separately, therefore greatly reduce power consumption of terminal equipment, thereby the equipment of saving electric weight reaches the prolongation equipment effect of service time.
Description of drawings
Fig. 1 is the schematic process flow diagram of a kind of method embodiment of the present invention;
Fig. 2 is the schematic process flow diagram of the present invention's another kind method embodiment;
Fig. 3 is a kind of structural representation block diagram that installs embodiment of the present invention;
Fig. 4 is the structural representation block diagram of the another kind of device embodiment of the present invention;
Fig. 5 is the structural representation block diagram of a kind of terminal embodiment of the present invention;
Fig. 6 is the structural representation block diagram of the another kind of terminal embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing the embodiment of the embodiment of the invention is done further and to be elaborated.
A kind of method of regulating LCD brightness on the terminal device that the embodiment of the invention provides, by when switching to different application models, the electric current of power supply that can regulate the LCD of this application model correspondence is a designated value, thereby changes the brightness of LCD.As shown in Figure 1, regulate the schematic process flow diagram of the method embodiment of LCD brightness for the present invention is a kind of, before this method of execution embodiment, preserve the dutyfactor value of various application models in advance.Wherein, described application model comprises: various application models such as text reading, video playback, picture browsing.Can be provided with and preserve the different dutyfactor value of various application model correspondences according to the application demand of different application pattern and with the level of comfort of eye.For example, for Text Mode, the dutyfactor value that is provided with under this pattern is 90%.Wherein, described dutyfactor value can setting as system default value before dispatching from the factory, and also can obtain for the user is provided with according to actual needs.Usually, application model all is arranged in the application module, the corresponding a kind of application model of application module.Described method comprises:
S101: when using a certain application model, start the application module at this application model place, described application module obtains the pairing dutyfactor value of preserving in advance of the application model with to be switched, sends the call request message of the dutyfactor value that includes this application model correspondence then to LCD brilliance control module.Wherein, the dutyfactor value of application model can directly be provided with and be kept in the corresponding application module, perhaps in the other control system in terminal device.
S102: described LCD brilliance control module generates the pulse width modulation pwm signal with described dutyfactor value according to the described dutyfactor value in the described call request message.
S103: use described pwm signal to regulate the average current of the feed circuit output of the LCD that will switch to this application model, regulate the brightness of described LCD by the average current that changes power supply.
Wherein, the concrete grammar of regulating the average current of described feed circuit output according to described dutyfactor value is: at first according to described dutyfactor value, generation has PWM (pulse width modulation) signal of this dutyfactor value, then, use described pwm signal to be adjusted to the average current that described LCD provides the feed circuit of power supply according to formula i=I*R.Wherein, described i represents described average current, and described I represents the peak point current of the feed circuit of the LCD that described application model will be used, and described R represents the dutycycle of described pwm signal.
In addition, when the dutyfactor value setting of each application model and when being kept in the other control system in the terminal device, application module described in the then above-mentioned S101 can no longer comprise the dutyfactor value of this application model correspondence in the call request message that LCD brilliance control module sends, but comprises the sign of this application model.In above-mentioned S102, described LCD brilliance control module can be according to the application model of appointment in the described call request message that receives, and directly acquires described dutyfactor value from the storer of the dutyfactor value of preserving this application model.
Based on technique scheme, the invention also discloses another kind of method embodiment, this method is on the basis of above-mentioned mode embodiment shown in Figure 1, regulating when described LCD brilliance control module before the average current of LCD, can judge earlier also whether the dutyfactor value of receiving is the dutyfactor value of current pwm signal, regulates accordingly according to judged result then.As shown in Figure 2, be the schematic process flow diagram of another kind of method embodiment of the present invention, this embodiment comprises:
S201: when using a certain application model, start the application module at this application model place, described application module obtains the pairing dutyfactor value of preserving in advance of the application model with to be switched, sends the call request message of the dutyfactor value that includes this application model correspondence then to LCD brilliance control module.Wherein, the dutyfactor value of application model can set in advance and be kept in the corresponding application module, perhaps in the other control system in terminal device.
S202: described LCD brilliance control module judges that whether the described dutyfactor value in the described request message is the dutyfactor value of pwm signal of current use that will switch to the LCD of this application model, if, process ends then; Otherwise, carry out S203.
S203: described LCD brilliance control module generates the pulse width modulation pwm signal with described dutyfactor value according to the dutyfactor value in the described request message.
S204: use described pwm signal to regulate the average current of the feed circuit output of described LCD, regulate the brightness of described LCD by the average current that changes power supply.
Wherein, the concrete grammar of regulating the average current of described feed circuit output according to described dutyfactor value is: at first according to described dutyfactor value, generation has PWM (pulse width modulation) signal of this dutyfactor value, then, use described pwm signal to be adjusted to the average current that described LCD provides the feed circuit of power supply according to formula i=I*R.Wherein, described i represents described average current, and described I represents the peak point current of the feed circuit of the LCD that described application model will be used, and described R represents the dutycycle of described pwm signal.
In addition, judge action described in the above-mentioned S202 except carrying out, can also carry out by other the judgement execution module on the terminal device of place with arbitration functions by described LCD brilliance control module.If other judge the execution module execution, then when the dutyfactor value of dutyfactor value in the described request message and described current pwm signal was unequal, described judgement execution module then instructed described LCD brilliance control module to carry out described S203.
In addition, when the dutyfactor value setting of each application model and when being kept in the other control system in the terminal device, application module described in the then above-mentioned S201 can no longer comprise the dutyfactor value of this application model correspondence in the call request message that LCD brilliance control module sends, but comprises the sign of this application model.In above-mentioned S203, described LCD brilliance control module can be according to the application model of appointment in the described call request message that receives, from the storer of the dutyfactor value of preserving this application model, directly acquire described dutyfactor value, carry out follow-up judgement action according to the dutyfactor value that is obtained then.
The foregoing description is owing to when the switch application pattern, can regulate the average current of the feed circuit of LCD according to the dutyfactor value of described application module correspondence, thereby change the brightness of LCD by the size of current of power supply.Therefore, the embodiment of the invention can ask LCD brightness adjusting module to change supply current according to the dutycycle of appointment when each switch application module automatically, therefore, reaches the effect that intelligence is regulated.Simultaneously, just because of can in time switch, make different application models have different brightness to reach best display effect, and can protect eyes.
And, because the embodiment of the invention is to regulate the brightness of LCD by the supply current of regulating LCD, and each LCD has separately independently supply current, therefore when having connected a plurality of LCD simultaneously on the terminal device, can also be respectively separately brightness independently be set according to different LCD, therefore, especially for a plurality of LCD, can reduce power consumption of terminal equipment possibly greatlyyer, thereby the equipment of saving electric weight reaches the prolongation equipment effect of service time.
Based on technique scheme, the invention also discloses a kind of device embodiment that is used to regulate LCD brightness on the terminal device, as shown in Figure 3, install the structural representation block diagram of embodiment for the present invention is a kind of, this device comprises: at least one application module 301, LCD brilliance control module 302.In addition, on the terminal device at this device place, also comprise at least one LCD304, and be used to described LCD304 that the LCD power management module (PMIC) 303 of power supply is provided.Wherein,
Described application module 301 is used to LCD that various application models are provided, for example various application models such as text reading, video playback, picture browsing.Application module 301 corresponding a kind of application models.Can the different dutyfactor value of various application model correspondences be set according to the application demand of different application pattern and with the level of comfort of eye.The dutyfactor value of each application model can directly be provided with and be kept in each self-corresponding application module 301.
In the time will switching some application models, correspondingly, start the application module 301 of this application model correspondence, described application module 301 is used for sending to described LCD brilliance control module 302 dutyfactor value of described application model correspondence.Particularly, can send the call request message of the dutyfactor value that includes these application module 301 correspondences, the mode that sends dutyfactor value certainly is not limited to this.Described LCD brilliance control module 302 is used to obtain the dutyfactor value that described application module 301 sends.For example, when this dutyfactor value sends by call request message, can be particularly after receiving described call request message, from this message, obtain described dutyfactor value, then according to described dutyfactor value, generation has the pwm signal of described dutyfactor value, and described pwm signal is sent to the pairing PMIC303 of the LCD304 that will use this application module 301.Described PMIC303 uses described pwm signal to regulate the average current of the feed circuit output of described LCD304 according to formula i=I*R, with by changing the brightness that described average current changes described LCD304.
In addition, the invention also discloses a kind of device embodiment that is used to regulate LCD brightness on the terminal device, this device embodiment is on above-mentioned device embodiment basis shown in Figure 3, can also be before described LCD brilliance control module 302 be regulated the average current of LCD304, judge earlier whether the dutyfactor value of receiving is the dutyfactor value of the current pwm signal of described LCD304, regulates accordingly according to judged result then.As shown in Figure 4, be the structural representation block diagram of the another kind of device embodiment of the present invention, this installs on the basis of above-mentioned device embodiment shown in Figure 3, and described device also comprises:
Wherein, according to described dutyfactor value, the concrete grammar of output average current of regulating described PMIC303 is identical with above-mentioned several embodiment methods, does not repeat them here.
Wherein, the application module 301 described in above-mentioned Fig. 3 and the device embodiment shown in Figure 4 can specifically comprise: dutycycle storage unit (not shown) is used to preserve the dutyfactor value corresponding with the respective application pattern; Call request message unit (not shown), be used for when the switch application pattern, generation comprises the call request message of the dutyfactor value of being preserved by described dutycycle storage unit, and export described call request message to described LCD brilliance control module 302, from described call request message, obtain described dutyfactor value for described LCD brilliance control module 302.
In addition, described application module 301 is not limited in and described in above-mentioned Fig. 3 and the device embodiment shown in Figure 4 dutyfactor value is sent to described LCD brilliance control module 302 by described call request message, certainly, described dutyfactor value for example can also be sent to described LCD brilliance control module 302 separately by other message or with other forms.
In addition, judge described in the said apparatus embodiment that execution module 305 can also be integrated on the described LCD brilliance control module 302.And the various modules described in the said apparatus embodiment not only can exist independent of one another, but also can all or part ofly be integrated in some control chips on the described terminal device.
Among the said apparatus embodiment because when each switch application module 301, described LCD brilliance control module 302 can be automatically according to the dutyfactor value of preserving in advance on the application module 301 of described application model correspondence, regulate the size of the output average current of the PMIC303 corresponding, change the brightness of described LCD304 with this with LCD304.Therefore, play the effect that intelligence is regulated.Simultaneously, owing to can in time switch, and different LCD can independent of each otherly switch, and makes the energy resource consumption of especially not only having saved terminal device for the terminal device that has connected many LCD simultaneously, and can protect eyes.
In addition; the embodiment of the invention also discloses a kind of terminal of regulating LCD brightness function that has; this terminal can be automatically with the brightness regulation of LCD under the required brightness of current application mode; reach the effect that intelligence is regulated; thereby in the time of can the better protection eyesight, can also in time reduce the power consumption of terminal.As shown in Figure 5, be the structural representation block diagram of a kind of terminal embodiment of the present invention, described terminal comprises device 501, at least one LCD502 that regulates LCD brightness, wherein,
The device 501 of described adjusting LCD brightness specifically comprises: at least one application module 5011, LCD brilliance control module 5012 and be used to described LCD502 that the PMIC5013 of power supply is provided.Wherein,
Described application module 5011 is respectively applied for to LCD provides the application model corresponding with this module, for example various application models such as text reading, video playback, picture browsing.Application module 5011 corresponding a kind of application models.Can the different dutyfactor value of various application model correspondences be set according to the application demand of different application pattern and with the level of comfort of eye.The dutyfactor value of each application model can directly be provided with and be kept in each self-corresponding application module 5011.
In the time will switching some application models, correspondingly, start the application module 5011 of this application model correspondence, described application module 5011 is used for sending to described LCD brilliance control module 5012 dutyfactor value of described application model correspondence.Particularly, can send the call request message of the dutyfactor value that includes these application module 5011 correspondences, the mode that sends dutyfactor value certainly is not limited to this.
Described LCD brilliance control module 5012 is used to obtain the dutyfactor value that described application module 5011 sends.For example, when this dutyfactor value sends by call request message, can be particularly after receiving described call request message, from this message, obtain described dutyfactor value, then according to described dutyfactor value, generation has the pwm signal of described dutyfactor value, and described pwm signal is sent to the pairing PMIC5013 of the LCD502 that will use this application module 5011.Described PMIC5013 uses described pwm signal to regulate the average current of the feed circuit output of described LCD502, with by changing the brightness that described average current changes described LCD502.Regulate concrete grammar and said method embodiment identical of the average current of feed circuit output by described pwm signal, do not repeat them here.
In addition, the invention also discloses a kind of terminal embodiment that regulates LCD brightness function that has, this terminal embodiment is on above-mentioned terminal embodiment basis shown in Figure 5, can also be before described LCD brilliance control module 5012 be regulated the average current of LCD502, judge earlier whether the dutyfactor value of receiving is the dutyfactor value of the current pwm signal of described LCD502, regulates accordingly according to judged result then.As shown in Figure 6, be the structural representation block diagram of the another kind of terminal embodiment of the present invention, this terminal is on the basis of above-mentioned terminal embodiment shown in Figure 5, and the device 501 of the adjusting LCD brightness in the described terminal also comprises:
Wherein, the application module 5011 described in above-mentioned Fig. 5 and the terminal embodiment shown in Figure 6 can specifically comprise: dutycycle storage unit (not shown) is used to preserve the dutyfactor value corresponding with the respective application pattern; Call request message unit (not shown), be used for when the switch application pattern, generation comprises the call request message of the dutyfactor value of being preserved by described dutycycle storage unit, and export described call request message to described LCD brilliance control module 5012, from described call request message, obtain described dutyfactor value for described LCD brilliance control module 5012.
In addition, described application module 5011 is not limited in and described in above-mentioned Fig. 5 and the terminal embodiment shown in Figure 6 dutyfactor value is sent to described LCD brilliance control module 5012 by described call request message, certainly, described dutyfactor value for example can also be sent to described LCD brilliance control module 5012 separately by other message or with other forms.
In addition, judge described in the above-mentioned terminal embodiment that execution module 5014 can also be integrated on the described LCD brilliance control module 5012.And the various modules described in the above-mentioned terminal embodiment not only can exist independent of one another, but also can all or part ofly be integrated in some control chips on the described terminal.
Among the above-mentioned terminal embodiment because when each switch application module 5011, described LCD brilliance control module 5012 can be automatically according to the dutyfactor value of preserving in advance on the application module 5011 of described application model correspondence, regulate the size of the output average current of the PMIC5013 corresponding, change the brightness of described LCD502 with this with LCD502.Therefore, play the effect that intelligence is regulated.Simultaneously, owing to can in time switch, and different LCD can independent of each otherly switch, and makes the energy resource consumption of especially not only having saved terminal device for the terminal device that has connected many LCD simultaneously, and can protect eyes.
Device embodiment described above only is schematic, wherein said unit as the separating component explanation can or can not be physically to separate also, the parts that show as the unit can be or can not be physical locations also, promptly can be positioned at a place, perhaps also can be distributed on a plurality of network element.Can select wherein some or all of module to realize the purpose of present embodiment scheme according to the actual needs.Those of ordinary skills promptly can understand and implement under the situation of not paying performing creative labour.
Through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential general hardware platform, can certainly pass through hardware, but the former is better embodiment under a lot of situation.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words can embody with the form of software product, this computer software product can be stored in the storage medium, as ROM/RAM, magnetic disc, CD etc., comprise that some instructions are with so that a computer equipment (can be a personal computer, server, the perhaps network equipment etc.) carry out the described method of some part of each embodiment of the present invention or embodiment.
Above-described embodiment of the present invention does not constitute the qualification to protection domain of the present invention.Any modification of being done within the spirit and principles in the present invention, be equal to and replace and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a method of regulating LCD brightness on the terminal device is characterized in that, described method comprises:
When the switch application pattern, obtain the pairing dutyfactor value of preserving in advance of the application model with to be switched;
Generation has the pulse width modulation pwm signal of described dutyfactor value;
Use described pwm signal to regulate the average current of the feed circuit of the LCD that will switch to this application model, to change the brightness of described LCD.
2. the method for adjusting LCD brightness as claimed in claim 1 is characterized in that, describedly obtains the dutyfactor value corresponding with this application model and is specially:
Reception includes the call request message of the dutyfactor value corresponding with this application model;
From described call request message, obtain described dutyfactor value.
3. the method for adjusting LCD brightness as claimed in claim 1 is characterized in that, the average current that the described pwm signal of described use is regulated described feed circuit is specially:
The dutyfactor value of described pwm signal is multiplied each other by the peak point current with described feed circuit, obtain the average current of described feed circuit.
4. the method for adjusting LCD brightness as claimed in claim 1 or 2 is characterized in that, before the pwm signal that generates described dutyfactor value, this method also comprises:
Judge that whether described dutyfactor value is the dutyfactor value of pwm signal of current use that will use the LCD of this pattern, if then finish this and regulate flow process; Otherwise, then carry out described generation action.
5. a device that is used to regulate LCD brightness on the terminal device is characterized in that, this device comprises:
At least one application module is respectively applied for to LCD provides the application model corresponding with this module, and in the time will switching to this application model, exports the dutyfactor value of this application model correspondence;
The LCD brightness control module is used to obtain the dutyfactor value that is sent by described application module, and generation and output device have the pwm signal of described dutyfactor value;
The LCD power management module, be used to LCD that power supply is provided, and use the pwm signal that comes from described LCD brightness control module to regulate the average current of the feed circuit of the LCD that will switch to this application model, to change the brightness of described LCD.
6. regulating device as claimed in claim 5 is characterized in that, described application module comprises:
The dutycycle storage unit is used to preserve the dutyfactor value corresponding with application model;
The call request message unit, be used for when the switch application pattern, from described dutycycle storage unit, obtain the dutyfactor value corresponding with this application model, generation and output packet contain the call request message of described dutyfactor value then, obtain described dutyfactor value for described LCD brightness control module from described call request message.
7. the device of adjusting as claimed in claim 5 is characterized in that, described device also comprises:
Judge execution module, be used for the dutyfactor value that sends according to described application module, the dutyfactor value with the current pwm signal of the LCD that will switch to this application model is identical to judge this dutyfactor value, when judgement is inequality, then instruct described LCD brightness control module to carry out described generation and output function.
8. a terminal is characterized in that, comprises the device of regulating LCD brightness, and described device comprises:
At least one application module is respectively applied for to LCD provides the application model corresponding with this module, and in the time will switching to this application model, exports the dutyfactor value of this application model correspondence;
The LCD brightness control module is used to obtain the dutyfactor value that is sent by described application module, and generation and output device have the pwm signal of described dutyfactor value;
The LCD power management module, be used to LCD that power supply is provided, and use the pwm signal that comes from described LCD brightness control module to regulate the average current of the feed circuit of the LCD that will switch to this application model, to change the brightness of described LCD.
9. terminal as claimed in claim 8 is characterized in that, described application module comprises:
The dutycycle storage unit is used to preserve the dutyfactor value corresponding with application model;
The call request message unit, be used for when the switch application pattern, from described dutycycle storage unit, obtain the dutyfactor value corresponding with this application model, generation and output packet contain the call request message of described dutyfactor value then, obtain described dutyfactor value for described LCD brightness control module from described call request message.
10. terminal as claimed in claim 8 is characterized in that, described device also comprises:
Judge execution module, be used for the dutyfactor value that sends according to described application module, the dutyfactor value with the current pwm signal of the LCD that will switch to this application model is identical to judge this dutyfactor value, when judgement is inequality, then instruct described LCD brightness control module to carry out described generation and output function.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101959519A CN101183517A (en) | 2007-12-07 | 2007-12-07 | Method, device and terminal for regulating brightness of LCD on terminal equipment |
| PCT/CN2008/073346 WO2009074106A1 (en) | 2007-12-07 | 2008-12-05 | Method, device and terminal for regulating brightness of lcd on terminal equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101959519A CN101183517A (en) | 2007-12-07 | 2007-12-07 | Method, device and terminal for regulating brightness of LCD on terminal equipment |
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| CN101183517A true CN101183517A (en) | 2008-05-21 |
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| CNA2007101959519A Pending CN101183517A (en) | 2007-12-07 | 2007-12-07 | Method, device and terminal for regulating brightness of LCD on terminal equipment |
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| WO (1) | WO2009074106A1 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2009074106A1 (en) * | 2007-12-07 | 2009-06-18 | Shenzhen Huawei Communication Technologies Co., Ltd. | Method, device and terminal for regulating brightness of lcd on terminal equipment |
| CN102413232A (en) * | 2011-10-11 | 2012-04-11 | 捷开通讯科技(上海)有限公司 | Backlight regulation device and method for mobile terminal |
| CN101656049B (en) * | 2008-08-18 | 2012-11-21 | 北京京东方光电科技有限公司 | Device and method for controlling brightness of backlight source |
| CN106251829A (en) * | 2016-08-01 | 2016-12-21 | 乐视控股（北京）有限公司 | The method and apparatus reducing power consumption |
| CN110211549A (en) * | 2019-04-25 | 2019-09-06 | 深圳市泰衡诺科技有限公司 | A kind of screen brightness regulation method, device, terminal and storage medium |
| CN111295700A (en) * | 2017-12-15 | 2020-06-16 | 谷歌有限责任公司 | Adaptive display brightness adjustment |
| CN112967683A (en) * | 2021-02-09 | 2021-06-15 | 上海天马有机发光显示技术有限公司 | Power supply control method, power supply control chip, display panel and display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20050052655A (en) * | 2003-11-28 | 2005-06-03 | 삼성전자주식회사 | Apparatus and method for control brightness of liquid crystal display using pulse width modulation signal |
| JP4425861B2 (en) * | 2003-12-12 | 2010-03-03 | ローム株式会社 | Organic EL drive circuit and organic EL display device |
| KR100641172B1 (en) * | 2004-09-17 | 2006-11-02 | 엘지전자 주식회사 | Method for controlling lcd's brightness in mobile communication terminal |
| JP2006190619A (en) * | 2005-01-07 | 2006-07-20 | Toshiba Matsushita Display Technology Co Ltd | Surface light source device and liquid crystal display |
| JP2007149752A (en) * | 2005-11-24 | 2007-06-14 | Denso Corp | Brightness adjusting apparatus for light emitting element |
| CN101183517A (en) * | 2007-12-07 | 2008-05-21 | 深圳华为通信技术有限公司 | Method, device and terminal for regulating brightness of LCD on terminal equipment |
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2007
- 2007-12-07 CN CNA2007101959519A patent/CN101183517A/en active Pending
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2008
- 2008-12-05 WO PCT/CN2008/073346 patent/WO2009074106A1/en active Application Filing
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2009074106A1 (en) * | 2007-12-07 | 2009-06-18 | Shenzhen Huawei Communication Technologies Co., Ltd. | Method, device and terminal for regulating brightness of lcd on terminal equipment |
| CN101656049B (en) * | 2008-08-18 | 2012-11-21 | 北京京东方光电科技有限公司 | Device and method for controlling brightness of backlight source |
| CN102413232A (en) * | 2011-10-11 | 2012-04-11 | 捷开通讯科技(上海)有限公司 | Backlight regulation device and method for mobile terminal |
| CN102413232B (en) * | 2011-10-11 | 2014-04-16 | 捷开通讯科技(上海)有限公司 | Backlight regulation device and method for mobile terminal |
| CN106251829A (en) * | 2016-08-01 | 2016-12-21 | 乐视控股（北京）有限公司 | The method and apparatus reducing power consumption |
| CN111295700A (en) * | 2017-12-15 | 2020-06-16 | 谷歌有限责任公司 | Adaptive display brightness adjustment |
| CN110211549A (en) * | 2019-04-25 | 2019-09-06 | 深圳市泰衡诺科技有限公司 | A kind of screen brightness regulation method, device, terminal and storage medium |
| CN110211549B (en) * | 2019-04-25 | 2023-06-09 | 深圳市泰衡诺科技有限公司 | Screen brightness adjustment method and device, terminal and storage medium |
| CN112967683A (en) * | 2021-02-09 | 2021-06-15 | 上海天马有机发光显示技术有限公司 | Power supply control method, power supply control chip, display panel and display device |
Also Published As
| Publication number | Publication date |
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| WO2009074106A1 (en) | 2009-06-18 |
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