CN101409059B - Method and system for implementing error screen suppression - Google Patents
Method and system for implementing error screen suppression Download PDFInfo
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- CN101409059B CN101409059B CN2008101784063A CN200810178406A CN101409059B CN 101409059 B CN101409059 B CN 101409059B CN 2008101784063 A CN2008101784063 A CN 2008101784063A CN 200810178406 A CN200810178406 A CN 200810178406A CN 101409059 B CN101409059 B CN 101409059B
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Abstract
The embodiment of the invention relates to a method used for realizing restraint of screen tearing. The method comprises: the backlight is turned on when the power is on so as to output panel signals of an LCD; an electric source module is controlled to supply power to a panel signal processing module after the panel signals are stable, so as to display a start-up picture by a display screen. The embodiment of the invention further relates to a system used for realizing restraint of screen tearing. By adopting the method and the system of the embodiment of the invention, the electrifying time sequence of the display screen can be controlled, namely, the backlight is turned on when the power is on; the panel signals of the LCD are then output; the electric source of the panel signal processing module is turned on after the panel signals are stable so as to supply power to the LCD panel signal processing module and display the picture, thereby effectively restraining 'screen tearing' and improving visual effect and product quality; moreover, an independent electric source module is adopted to supply power to the panel signal processing module, thus the electric source is more stable.
Description
Technical field
The present invention relates to the mobile communication technology field, particularly realize the method and system that the flower screen suppresses.
Background technology
Man-machine interface is a kind of embedded computer product, mainly as controlling and display terminal of industrial production automation equipment, and LCD (Liquid Crystal Display, advantage such as LCD) little, in light weight and display frame is more clear with its volume is widely used in the man-machine interface.
Wherein, controller is controlled the demonstration of LCDs picture (panel) by LCD (Liquid Crystal Display, LCD) in LCD, and lcd controller is controlled by MCU (microprocessor).At the LCD powered on moment, MCU resets and does not also finish, this moment, it can't be controlled lcd controller, this will cause address, data management, the read-write control of display buffer can not moment controlled, therefore lcd controller is in disorderly and unsystematic state to the drive signal of LCD display, and these rambling data presentation " flower screen " phenomenon will occur on display screen, have had a strong impact on the quality of visual effect and entire product.
At the problem of " flower screen ", prior art normally adopts time-delay to light method backlight, promptly increases delay circuit and lights in order to control time-delay backlight; But, the shortcoming of this method also clearly: the back screen that powers on is in the blank screen state always, just can light after waiting for a period of time, and in the process of waiting for, the user does not know whether display screen normal, thereby can influence visual effect and product quality yet.
Summary of the invention
In view of this, the embodiment of the invention provides a kind of method and system of realizing that the flower screen suppresses, can effectively suppress the appearance of " flower screen ", has improved the quality of visual effect and product.
For addressing the above problem, the technical scheme that the embodiment of the invention provides is as follows:
A kind of method that realizes that the flower screen suppresses comprises:
Open when powering on backlight, output LCD panel signal;
The control power module is the power supply of panel signal processing module behind described panel signal stabilization.
Preferably, described output LCD panel signal specifically comprises:
MCU output start-up picture signal is to lcd controller, and controls described lcd controller described start-up picture signal is outputed to the panel signal processing module.
Preferably, determine in the following manner whether described panel signal is stable:
After output LCD panel signal surpasses default time threshold, determine that described panel signal is stable; Described time threshold preestablishes according to system environments or demand.
Preferably, described power module for panel signal processing module power supply is power module independently.
Preferably, described independently power module is the controllable electric power chip; Control this independently opening and closing of power module by MCU.
Preferably, behind described panel signal stabilization, the output of the described power module of described MCU control pin is set to low level, is output as the power supply of LCD panel signal processing module with the power supply of opening described supply module.
Preferably, this method further comprises:
Output control pin at power module connects a pull-up resistor, and being provided with is closed condition when powering on.
A kind of system that realizes that the flower screen suppresses comprises: MCU, lcd controller, power module and LCD panel signal processing module; Wherein,
Power on open backlight after, described MCU control lcd controller output slab signal;
Behind described panel signal stabilization, described MCU control power module is the power supply of LCD panel signal processing module, and described LCD panel signal processing module control LCD panel shows start-up picture.
Preferably, described power module is for adopting the independently power module of controllable electric power chip.
Preferably, described MCU comprises: timer and module is set; Wherein,
Described timer is used for starting regularly after described LCD panel signal output, and notifies the described unit that is provided with after overtime;
Described the unit be set be used to receive the notice of timer after, the output control pin of described power module is set to low level, to open the power supply output of described supply module, is the power supply of LCD panel signal processing module.
As can be seen, adopt the method and system of the embodiment of the invention, electrifying timing sequence by control display screen, backlight opening when promptly powering on exported the panel signal of LCD again, treats behind the panel signal stabilization again with panel signal processing module power supply opening, be the power supply of LCD panel signal processing module, picture is shown, thereby can effectively suppress the appearance of " flower shields ", improved the quality of visual effect and product; And, independently be the power module of panel signal processing module power supply by adopting, can be so that power supply be more stable.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the method flow synoptic diagram of the embodiment of the invention 1;
Fig. 2 is the method flow synoptic diagram of the embodiment of the invention 2;
Fig. 3 is system's schematic block diagram of the embodiment of the invention 3.
Embodiment
The basic thought of the embodiment of the invention is the electrifying timing sequence of control display screen, backlight opening when promptly powering on, export the panel signal of LCD again, treat behind the panel signal stabilization again with panel signal processing module power supply opening, be the power supply of LCD panel signal processing module, picture is shown, thereby can effectively suppress the appearance of " flower shields ", improved the quality of visual effect and product.
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described; Obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
The embodiment of the invention 1 relates to a kind of method that realizes that flower screen suppresses, and as shown in Figure 1, this method comprises: step 101: when powering on, open backlight, output LCD panel signal;
Concrete, backlight electric power powers on and promptly opens, and LCD display is lighted when promptly powering on, thus the blank screen state after having avoided powering on; Power on open backlight in, MCU output start-up picture signal is to lcd controller, and controls described lcd controller described start-up picture signal is outputed to panel signal processing module on the LCD panel; At this moment,, the power module of panel signal processing module power supply closes or output state not for being in, thereby no start-up picture demonstration on the display screen;
Step 102: the control power module is the power supply of panel signal processing module behind described panel signal stabilization, so that LCD display shows start-up picture;
Wherein, can determine in several ways whether described panel signal is stable, for example: can determine after a period of time that when described panel signal is input to LCD panel signal processing module described signal is stable, and the wherein said time can specifically be set as required, also can be defined as a certain fixed threshold, this paper repeats no more;
In addition, it should be noted that described power module for the power supply of panel signal processing module can be the former LCD panel signal processing module power supply that is subjected to MCU control, and it is set to not export before described LCD panel signal stabilization; Power module is described panel signal processing module power supply and the embodiment of the invention proposes to adopt independently, this independent current source module optionally adopts the controllable electric power chip, and controls the opening and closing of this independent current source module in the specific implementation by the IO mouth of MCU; When the IO mouth is low level, opening power output, when the IO mouth is high level, powered-down output; Wherein, can also connect a pull-up resistor at the output control pin of this power module, and when powering on, be defaulted as closed condition;
Behind described panel signal stabilization, the output of the described power module of described MCU control pin is set to low level, opens the power supply output of described supply module, is the power supply of LCD panel signal processing module, thereby start-up picture is shown.
Describe the method that suppresses the flower screen in detail below by the concrete start process of the embodiment of the invention 2, as shown in Figure 2:
In S201, it is backlight to open the LCD panel when powering on;
In S202, MCU outputs to lcd controller with the start-up picture signal; At this moment, for the power module of panel signal processing module power supply for closing or output state not;
In S203, described lcd controller outputs to described start-up picture signal the panel signal processing module that is positioned on the LCD panel;
In S204, behind the start-up picture signal stabilization, described MCU is changed to low level with described panel signal processing module power module output control pin, and the power supply output of opening power module is the power supply of LCD panel signal processing module;
In S205, described panel signal processing module powers on start-up picture is shown.
As can be seen, adopt the method for the embodiment of the invention, electrifying timing sequence by control display screen, backlight opening when promptly powering on exported the panel signal of LCD again, treats behind the panel signal stabilization again with panel signal processing module power supply opening, be the power supply of LCD panel signal processing module, picture is shown, thereby can effectively suppress the appearance of " flower shields ", improved the quality of visual effect and product; And, independently be the power module of panel signal processing module power supply by adopting, can be so that power supply be more stable.
Based on above-mentioned thought, the embodiment of the invention 3 relates to a kind of system that realizes that the flower screen suppresses, and as shown in Figure 3, this system comprises: MCU301, lcd controller 302, power module 303 and LCD panel signal processing module 304; Wherein,
Power on open backlight after, described MCU301 control lcd controller 302 output slab signals;
Behind described panel signal stabilization, described MCU301 control power module 303 is 304 power supplies of LCD panel signal processing module, and described LCD panel signal processing module 304 control LCD panels show start-up picture.
Wherein, described power module is for adopting the independently power module of controllable electric power chip; Concrete, adopting independently, power module makes power supply more stable as the power supply of LCD panel signal processing module; And this independent current source module adopts the controllable electric power chip, and controls opening or closing of this independent current source by the IO mouth of MCU: the output of IO mouth low level opening power, the output of high level powered-down; In addition, also can connect a pull-up resistor, make this independent current source when powering on, be defaulted as closed condition, so do not have display frame on the display screen at this independent current source module output control pin; Certainly, those skilled in the art understand, the power module of powering for LCD panel signal processing module can also be the former LCD panel signal processing module power supply that is subjected to MCU control, and it is set to not export before described LCD panel signal stabilization, specifically repeats no more herein;
In addition, described MCU comprises: timer and module is set; Wherein,
Described timer is used for starting regularly after described panel signal output, and notifies the described unit that is provided with after overtime; Described the unit be set be used to receive the notice of timer after, the output control pin of described power module is set to low level, to open the power supply output of described supply module, is the power supply of LCD panel signal processing module; Concrete, after MCU moves, independent current source module output control pin is changed to high level, make this independent current source module non-transformer output; When the start display picture data sends to lcd controller, and after lcd controller sends to LCD with LCD panel signal the opening timing device, wait for the panel signal stabilization after; Behind timer expiry, determine the panel signal stabilization, notify the described unit that is provided with this moment, described the notice that the unit receives the panel signal stabilization is set after, described independent current source module output control pin is changed to low level, the power supply of LCD panel signal processing module is given in the power supply output of opening power module, and picture is shown.
It will be understood by those skilled in the art that and to use many different technologies and in the technology any one to come expression information, message and signal.For example, the signal of mentioning in the above-mentioned explanation can be expressed as voltage, electric current, electromagnetic wave, magnetic field or magnetic particle, light field or above combination in any.
The professional can also further should be able to recognize, the unit and the algorithm steps of each example of describing in conjunction with embodiment disclosed herein, can realize with electronic hardware, computer software or the combination of the two, for the interchangeability of hardware and software clearly is described, the composition and the step of each example described prevailingly according to function in the above description.These functions still are that software mode is carried out with hardware actually, depend on the application-specific and the design constraint of technical scheme.The professional and technical personnel can use distinct methods to realize described function to each specific should being used for, but this realization should not thought the scope that exceeds the embodiment of the invention.
The method of describing in conjunction with embodiment disclosed herein or the step of algorithm can directly use the software module of hardware, processor execution, and perhaps the combination of the two is implemented.Software module can place the storage medium of any other form known in random access memory (RAM), internal memory, ROM (read-only memory) (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or the technical field.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the embodiment of the invention.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined herein General Principle can realize under the situation of the spirit or scope that do not break away from the embodiment of the invention in other embodiments.Therefore, the embodiment of the invention will can not be restricted to these embodiment shown in this article, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
The above only is the preferred embodiment of the embodiment of the invention; not in order to the restriction embodiment of the invention; all within the spirit and principle of the embodiment of the invention, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the embodiment of the invention.
Claims (8)
1. a method that realizes that the flower screen suppresses is characterized in that, comprising:
Open when powering on backlight, output LCD panel signal;
The control power module is the power supply of panel signal processing module behind described panel signal stabilization; Described power module for panel signal processing module power supply is power module independently.
2. method according to claim 1 is characterized in that, described output LCD panel signal specifically comprises:
MCU output start-up picture signal is to lcd controller, and controls described lcd controller described start-up picture signal is outputed to the panel signal processing module.
3. method according to claim 1 is characterized in that, determines in the following manner whether described panel signal is stable:
After output LCD panel signal surpasses default time threshold, determine that described panel signal is stable; Described time threshold preestablishes according to system environments or demand.
4. method according to claim 1 is characterized in that:
Described independently power module is the controllable electric power chip; Control this independently opening and closing of power module by MCU.
5. method according to claim 1 is characterized in that:
Behind described panel signal stabilization, the output of the described power module of described MCU control pin is set to low level, is output as the power supply of LCD panel signal processing module with the power supply of opening described supply module.
6. method according to claim 1 is characterized in that, this method further comprises:
Output control pin at power module connects a pull-up resistor, and being provided with is closed condition when powering on.
7. a system that realizes that the flower screen suppresses is characterized in that, comprising: MCU, lcd controller, power module and LCD panel signal processing module; Wherein,
Power on open backlight after, described MCU control lcd controller output slab signal;
Behind described panel signal stabilization, described MCU control power module is the power supply of LCD panel signal processing module, and described LCD panel signal processing module control LCD panel shows start-up picture; Described power module is for adopting the independently power module of controllable electric power chip.
8. system according to claim 7 is characterized in that, described MCU comprises: timer and module is set; Wherein,
Described timer is used for starting regularly after described LCD panel signal output, and notifies the described unit that is provided with after overtime;
Described the unit be set be used to receive the notice of timer after, the output control pin of described power module is set to low level, to open the power supply output of described supply module, is the power supply of LCD panel signal processing module.
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| CN102708784A (en) * | 2012-07-02 | 2012-10-03 | 深圳市开立科技有限公司 | Electrification management system and method of display screen |
| CN106960645A (en) * | 2016-01-12 | 2017-07-18 | 深圳多哚新技术有限责任公司 | A kind of display methods of display device, display device and Virtual Reality system |
| CN106528173A (en) * | 2016-11-25 | 2017-03-22 | 广东欧珀移动通信有限公司 | Startup picture display method and terminal |
| CN106598619A (en) * | 2016-12-21 | 2017-04-26 | 诺仪器（中国）有限公司 | Startup interface display control method for embedded system |
| CN108447454B (en) * | 2018-02-23 | 2020-06-05 | 广州视源电子科技股份有限公司 | Display screen time sequence control method and device, terminal equipment and storage medium |
| WO2023272589A1 (en) * | 2021-06-30 | 2023-01-05 | 京东方科技集团股份有限公司 | Display panel driving method |
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