CN106297628A - Brightness of display screen control method and device - Google Patents
Brightness of display screen control method and device Download PDFInfo
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- CN106297628A CN106297628A CN201610676509.7A CN201610676509A CN106297628A CN 106297628 A CN106297628 A CN 106297628A CN 201610676509 A CN201610676509 A CN 201610676509A CN 106297628 A CN106297628 A CN 106297628A
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- 238000000034 method Methods 0.000 title claims abstract description 45
- 238000005070 sampling Methods 0.000 claims abstract description 79
- 230000008859 change Effects 0.000 claims abstract description 65
- 230000001105 regulatory effect Effects 0.000 claims abstract description 26
- 230000000737 periodic effect Effects 0.000 claims abstract description 7
- 230000005540 biological transmission Effects 0.000 claims description 16
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- 230000035945 sensitivity Effects 0.000 abstract description 4
- 239000011159 matrix material Substances 0.000 description 22
- 238000012545 processing Methods 0.000 description 18
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- 230000035772 mutation Effects 0.000 description 12
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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
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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
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/10—Intensity circuits
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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
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Abstract
The present embodiments relate to infrared touch control device technical field, particularly relate to a kind of brightness of display screen control method and device.Wherein, the method includes: when not having user's touch, and the infrared receiving tube in infrared touch frame is carried out periodic samples；Determining whether the difference between infrared signal parameter value and the reference parameter value of N continuous time sampling is all higher than threshold value of suddenling change, described N is the integer more than or equal to 2；When difference between infrared signal parameter value and the basic parameter of N continuous time sampling is all higher than sudden change threshold value, generate display brightness regulating command.Embodiment of the present invention technical scheme, it is possible on the premise of not increasing additional light inductor component, it is achieved the brightness of display screen of higher sensitivity adjusts.
Description
Technical field
The present embodiments relate to infrared touch control device technical field, particularly relate to a kind of brightness of display screen control method and
Device.
Background technology
The intensity of illumination of the display effect environment be positioned at terminal unit of terminal unit display screen has the most close
Relation.For making terminal unit have preferable display effect, can be according to the brightness to display screen of the intensity of illumination of surrounding
It is adjusted.
The mode currently adjusted brightness of display screen mainly includes two kinds, and one is that user manually adjusts according to personal feeling
The brightness of terminal unit display screen；Another way is to arrange the light sensitive device such as photographic head, optical sensor, terminal on terminal unit
Equipment determines the change of intensity of illumination in environment according to the signal that light sensitive device is gathered, and the most right according to the result determined
The brightness of terminal unit display screen is adjusted.
Inventor finds during realizing technical solution of the present invention: above-mentioned utilize light sensitive device to be automatically adjusted display screen
The scheme of brightness is applicable to the terminal unit that size is smaller, such as mobile phone, panel computer.For the end that screen size is bigger
End equipment, such as television set and advertisement machine etc., if arranging the light sensitive device of negligible amounts on the display device, as arranged a shooting
Head, owing to the monitored area ratio of photographic head is relatively limited, when the region intensity of illumination away from photographic head changes significant change,
Photographic head is difficult to catch this illumination variation information, affects terminal unit and is automatically adjusted the sensitivity of brightness of display screen, if at end
Greater number of light sensitive device is set on end equipment, volume and the cost of terminal unit can be increased.
Summary of the invention
The embodiment of the present invention provides a kind of brightness of display screen control method and device, not increase additional light sensor
On the premise of part, it is achieved the brightness of display screen of higher sensitivity adjusts.
First aspect, embodiments provides a kind of brightness of display screen control method, including:
When there is no user's touch, the infrared receiving tube in infrared touch frame is carried out periodic samples；
Determine whether the difference between infrared signal parameter value and the reference parameter value of N continuous time sampling is all higher than the threshold that suddenlys change
Value, described N is the integer more than or equal to 2；
When difference between infrared signal parameter value and the basic parameter of N continuous time sampling is all higher than sudden change threshold value, raw
Become display brightness regulating command.
Second aspect, embodiments provides a kind of brightness of display screen adjusting means, including: primary processor, infrared
Touch-control processor and infrared touch-control transmission circuit；
Described infrared touch-control processor is connected with described primary processor and described infrared touch-control transmission circuit respectively, described master
Processor is connected with described display screen；
Described infrared touch-control processor, for when not having user's touch, to the infrared receiver in infrared touch frame
Pipe carries out periodic samples；Determine that the difference between infrared signal parameter value and the reference parameter value of N continuous time sampling is the most equal
More than sudden change threshold value, described N is the integer more than or equal to 2；Infrared signal parameter value and basic parameter when N continuous time sampling
Between difference be all higher than suddenly change threshold value time, generate display brightness regulating command；
Described primary processor, is used for performing described brightness of display screen regulating command.
The third aspect, embodiments provides a kind of brightness of display screen adjusting means, including: primary processor, infrared
Touch-control processor, infrared touch-control transmission circuit and display screen；
Described infrared touch-control processor is connected with described primary processor and described infrared touch-control transmission circuit respectively, described master
Processor is connected with described display screen；
Described infrared touch-control processor, for being sent to described master by the infrared signal sampled from infrared touch-control transmission circuit
Processor；
Described primary processor, bright for performing above-mentioned display screen according to the infrared signal from described infrared touch-control processor
Degree control method, and according to the brightness of brightness of display screen regulating command regulation display screen.
Fourth aspect, embodiments provides a kind of brightness of display screen adjusting means, including: primary processor, infrared
Touch-control transmission circuit and display screen；Described primary processor is connected with described infrared touch-control transmission circuit respectively and described display screen connects
Connect；Described primary processor, is used for performing above-mentioned brightness of display screen control method.
The technical scheme that the embodiment of the present invention provides, when there is no user's touch, if the infrared letter of N continuous time sampling
Difference number between parameter value and reference parameter value is both greater than suddenlyd change threshold value, and the infrared signal parameter value of N continuous time sampling is described
There occurs sudden change relative to reference parameter value, determine that the intensity of illumination of environment at infrared touch screen there occurs substantially change according to this
Changing, the now brightness to display screen is adjusted, it is achieved that be automatically adjusted infrared touch display screen display brightness.It addition,
The program not one detects that the infrared signal parameter relative datum parameter value of sampling is undergone mutation and is i.e. adjusted, but works as
Just generate brightness of display screen regulating command when the infrared signal parameter of N continuous time sampling is all undergone mutation, thus can avoid moving
When animal body the most quickly moves, the numerical value causing the infrared touching signals that touch screen collects is fluctuated,
In turn result in the problem that mistake generates brightness of display screen regulating command.Further, this programme directly use script to be just arranged on red
Infrared receiving tube on outer touching display screen gathers infrared touching signals, it is to avoid in correlation technique, bright in order to realize screen
Degree regulation, in addition it is also necessary to additionally arrange light sensitive device, causes equipment holistic cost and the problem mentioning increase.
It should be appreciated that it is only exemplary and explanatory, not that above general description and details hereinafter describe
The embodiment of the present invention can be limited.
Accompanying drawing explanation
Accompanying drawing herein is merged in description and constitutes the part of this specification, it is shown that meet the enforcement of the present invention
Example, and for explaining the principle of the present invention together with description.
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, for those of ordinary skill in the art
Speech, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of the embodiment of the present invention one terminal unit；
Fig. 2 is the structural representation of the infrared touch frame in terminal unit；
Fig. 3 is infrared receiving tube signal intensity schematic diagram under low light environment；
Fig. 4 is infrared receiving tube signal intensity schematic diagram under strong light environment；
Fig. 5 is the flow chart of the embodiment of the present invention one brightness of display screen control method；
Fig. 6 is the flow chart of the embodiment of the present invention two brightness of display screen control method；
Fig. 7 is the flow chart of the embodiment of the present invention three brightness of display screen control method；
Fig. 8 is the structural representation of a kind of possible processing means of the embodiment of the present invention.
Detailed description of the invention
For the technical scheme making those skilled in the art be more fully understood that in the present invention, real below in conjunction with the present invention
Execute the accompanying drawing in example, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described enforcement
Example is only a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, this area is common
The every other embodiment that technical staff is obtained under not making creative work premise, all should belong to present invention protection
Scope.
Embodiment of the present invention brightness of display screen regulation scheme is applicable to the terminal unit with infrared touch screen.Fig. 1 is this
The structural representation of inventive embodiments one terminal unit.As it is shown in figure 1, this terminal unit includes infrared touch-control system and main control
System.
Wherein, infrared touch-control system includes MCU101, launches scanning circuit 102, reception scanning circuit 103, infrared emission
Pipe matrix 104, infrared receiving tube matrix 105 and sample circuit 106.
Launch scanning circuit 102 to be connected with MCU101, for driving infrared transmitting tube matrix 104 under the control of MCU101
In infrared transmitting tube launch infrared ray；Receive scanning circuit 103 to be connected with MCU101, for driving under the control of MCU101
Infrared receiving tube receiving infrared-ray in infrared receiving tube matrix 105；Sample circuit 106 respectively with infrared receiving tube matrix 105
And MCU101 connects, under the control of MCU101, receive in infrared receiving tube matrix 105 according to prefixed time interval
To infrared ray sample, and sampled signal be sent to MCU101 determine whether to receive the touch-control of user for MCU101
Operate and determine the operating position of user.
Master control system includes that primary processor 107, primary processor 107 are connected with MCU101, for determining according to MCU101
User action position control apply response accordingly.Primary processor 107 is also connected with display screen, and primary processor 107 is by holding
The brightness of display screen is automatically adjusted by the brightness of display screen control method of the row embodiment of the present invention, and concrete method of adjustment sees
Hereafter embodiment, here is omitted.
In actual end product, above-mentioned infrared transmitting tube matrix 104 and infrared receiving tube matrix 105 form infrared
Touch frame, infrared touch frame is for being arranged on the surrounding of display screen.
Fig. 2 is the structural representation of the infrared touch frame in terminal unit.As in figure 2 it is shown, infrared in infrared touch frame
Transmitting tube matrix 104 is evenly distributed on two adjacent sides of display screen, and infrared receiving tube matrix 105 is evenly distributed on display
On the another two side of screen.Each with infrared receiving tube matrix 105 of each infrared transmitting tube on infrared transmitting tube matrix 104
Individual infrared receiving tube one_to_one corresponding is arranged.During infrared touch frame work shown in Fig. 2, each red in infrared transmitting tube matrix 104
Infrared ray launched by emission pipe to the direction of opposite end infrared receiving tube, and each infrared receiving tube in infrared receiving tube matrix 105 divides
Other receiving infrared-ray.
In infrared touch frame shown in Fig. 2, infrared receiving tube is a kind of the infrared signal received to be changed into telecommunications
Number semiconductor device, there is the ability of perception infrared signal.When the illumination brightness of infrared touch frame surrounding becomes
Change the transmitting power of (such as sunshine condition) and infrared transmitting tube matrix constant under conditions of, the current signal in infrared receiving tube
Also change can be produced.
Fig. 3 is the infrared receiving tube a kind of signal intensity schematic diagram under low light environment.Fig. 4 is that infrared receiving tube is at high light
A kind of signal intensity schematic diagram under environment.Drawing according to Fig. 3 and Fig. 4, under identical transmitting power, infrared receiving tube is weak
Under luminous environment, the intensity of the current signal that its receiving infrared-ray is transformed into is smaller；Infrared receiving tube is under strong light environment, and it connects
The strength ratio receiving the current signal that infrared ray is transformed into is bigger.
The feature that the electric current generated according to infrared receiving tube changes with the intensity of illumination in environment, the embodiment of the present invention provides
A kind of brightness of display screen regulation scheme.In the program, according to the change of current signal in infrared receiving tube, regulation display screen
Brightness, this scheme is without the most additionally increasing light sensitive device, and infrared receiving tube matrix is on display screen side
Being uniformly distributed can the illumination variation of perception display screen regional, it is possible to increase automatically adjust the sensitivity of brightness of display screen.
Fig. 5 is the flow chart of the embodiment of the present invention one brightness of display screen control method.Method shown in Fig. 5 is based on shown in Fig. 1
Terminal unit, process step include:
Step S201: when not having user's touch in infrared touch display screen, infrared in infrared touch frame of MCU
Receive pipe and carry out periodic samples.
Whether step S202:MCU determines the difference between infrared signal parameter value and the reference parameter value of N continuous time sampling
Being all higher than threshold value of suddenling change, N is the integer more than or equal to 2.
In embodiment of the present invention scheme, sudden change threshold value can be a numerical value set in advance, when the infrared signal of MCU sampling
When difference between parameter value and reference parameter value is more than sudden change threshold value, illustrate that the infrared signal in infrared touch frame is relative to base
Calibration signal there occurs sudden change.There is no user's touch and the infrared signal parameter value of N continuous time sampling and reference parameter value
Between difference be all higher than suddenly change threshold value time, then MCU determines that the light conditions of infrared touch screen local environment changes.
In embodiment of the present invention scheme, MCU determines between infrared signal parameter value and the reference parameter value of N continuous time sampling
Difference whether be all higher than the suddenling change mode of threshold value have multiple, such as in a kind of mode, the infrared signal that MCU will sample every time
Parameter value all does difference with a reference parameter value set in advance, obtains infrared signal parameter difference；MCU determines that N continuous time is adopted
After sample, whether calculated N number of infrared signal infrared signal parameter difference is all higher than threshold value of suddenling change；If the infrared letter of N continuous
Number parameter difference is all higher than threshold value of suddenling change, it is determined that between infrared signal parameter value and the reference parameter value of N continuous time sampling
Difference is all higher than threshold value of suddenling change.
In a kind of possible scheme, every time the infrared signal parameter value of sampling includes that each in infrared touch frame is infrared
Receive the signal parameter value of pipe；Reference parameter value is a fixed numbers, then MCU determines the infrared signal parameter arbitrarily once sampled
Difference between value and reference parameter value includes more than the mode of sudden change threshold value: each infrared receiving tube this sampling obtained
Signal parameter value all do difference with reference parameter value；Determine whether each infrared receiving tube has at least one infrared receiving tube with
Difference between reference parameter value is more than sudden change threshold value；When each infrared receiving tube has at least one infrared receiving tube and benchmark
When difference between parameter value is more than sudden change threshold value, determine between infrared signal parameter value and the reference parameter value of this sampling
Difference is more than sudden change threshold value.On this basis, determine between infrared signal parameter value and the reference parameter value of N continuous time sampling
Difference is all higher than sudden change threshold value and may refer to: contain at least one identical infrared receiving tube in this N continuous time sampling, should
The N continuous of at least one identical infrared receiving tube time difference between infrared signal sampled value and reference parameter value is all higher than dashing forward
Variable threshold value.
Step S203: if the difference between infrared signal parameter value and the reference parameter value of N continuous time sampling is all higher than
Sudden change threshold value, MCU generates brightness of display screen regulating command.
In embodiment of the present invention scheme, in the scene not having user's touch, not one the infrared of sampling detected
Signal parameter value relative to reference parameter value undergo mutation (difference i.e. and between reference parameter value more than sudden change threshold value) the most right
The brightness of infrared touch display screen is adjusted, but when the infrared signal parameter value having N continuous time sampling is all undergone mutation
Just generate brightness of display screen regulating command, thus can avoid owing to mobile object the most back and forth quickly mobile causes
Infrared signal parameter value fluctuated, and then situation about being adjusted brightness of display screen continually occurs.Further, we
Case directly use the infrared receiving tube being originally just arranged in infrared touch display screen gather infrared touching signals, it is to avoid phase
In order to realize screen intensity regulation, the problem needing additionally to arrange light sensitive device in the technology of pass.
In possible a kind of design, the size of infrared touch display screen is bigger, it is possible to infrared touch-control can be occurred to show
A part of light conditions of display screen changes.Embodiment of the present invention is equally applicable to the subregion of infrared touch display screen
The scene that light conditions changes.In embodiment of the present invention scheme, infrared touch frame is arranged around the surrounding of display screen, when
When the light conditions in any one region of infrared touch screen changes, corresponding meeting affects the infrared receiver of this subregion
Signal parameter value in pipe, MCU determines illumination according to the catastrophe of the signal parameter value of each infrared receiving tube collected
The region that situation changes.Signal when the infrared receiving tube in the region that this light conditions in N continuous time sampling changes
When parameter value is all undergone mutation relative to reference parameter value, MCU generates brightness of display screen regulating command, such that it is able to make the present invention
Embodiment scheme is adapted to the brightness of display screen regulation when subregion light conditions of infrared touch screen changes.
In the terminal unit shown in Fig. 1, after MCU generates display brightness regulating command, brightness of display screen is regulated by MCU
Instruction occurs to primary processor, and the brightness of display screen is adjusted by primary processor according to brightness of display screen regulating command.
Optionally, brightness of display screen regulation can be carried during MCU is sent to the brightness of display screen regulating command of primary processor
Instruction information, according to the instruction information that brightness of display screen regulates, primary processor determines that display screen needs regulation brightness extremely.
In a kind of possible design, the instruction information of brightness of display screen regulation can be the most once adopting of n times sampling
Sample value, or, a wherein sampled value in the region that the light conditions determined in n times sampling changes or putting down of n times sampling
Average, or display screen needs regulation brightness degree extremely be sent to primary processor.
When the instruction information of brightness of display screen regulation is a wherein sampled value of n times sampling, or, in n times sampling really
During the meansigma methods that a wherein sampled value in the region that fixed light conditions changes or n times are sampled, primary processor is according to pre-
The level of signal dividing mode first set determines the level of signal corresponding to the sampled value that MCU sends, different in primary processor
The corresponding different brightness of display screen regulation grade of level of signal；The letter corresponding to sampled value that primary processor sends according to MCU
Number grade determines that brightness of display screen regulates grade, and the brightness regulation of display screen to corresponding grade.
When the instruction information of brightness of display screen regulation is display screen needs regulation brightness degree extremely, primary processor determines
The regulation grade of the brightness of display screen corresponding to display-screen brightness grading that MCU sends, and primary processor is according to corresponding result
By the brightness regulation of display screen to corresponding grade.
In said method embodiment, MCU using a predetermined fixed value as reference parameter value, in the reality that another one is possible
Executing in scheme, reference parameter value is no longer a numerical value, but an array, this array includes multiple numerical value, each numerical value
With each infrared receiving tube one_to_one corresponding in infrared touch frame, the corresponding fixed reference of the most each infrared receiving tube.?
In the case of this kind, determine that whether the difference between infrared signal parameter value and the reference parameter value arbitrarily once sampled is more than sudden change
The mode of threshold value includes: by this time sampling in each infrared receiving tube signal parameter value respectively with and each infrared receiving tube
Corresponding reference value does difference, and determine each difference whether more than sudden change threshold value, when the difference of at least M infrared receiving tube
During more than sudden change threshold value, determine that the difference between infrared signal parameter value and the reference parameter value of this sampling is more than sudden change threshold
Value, wherein, M is the integer more than, and this M value can be configured as required.
Fig. 6 is the flow chart of the embodiment of the present invention two brightness of display screen control method.Method shown in Fig. 6 is based on shown in Fig. 1
Terminal unit, process step include:
Step S301:MCU receive i & lt sampling infrared signal parameter value, i is the integer more than or equal to 2.
Step S302:MCU determines the infrared signal parameter value that i & lt is sampled and the infrared signal parameter sampled for the i-th-1 time
Whether the difference between value is more than sudden change threshold value, and if greater than sudden change threshold value, then the infrared signal parameter value of i & lt sampling is relative
Infrared signal parameter value in the i-th-1 time sampling there occurs sudden change, then MCU determines the infrared signal parameter value sampled the i-th-1 time
As reference parameter value, and perform step S303；If no more than suddenling change threshold value, then the infrared signal parameter of i & lt sampling
Value is not undergone mutation relative to the infrared signal parameter value of the i-th-1 time sampling, and MCU is to returning step S301 after i+1.
In embodiments of the present invention, i & lt is sampled by MCU infrared signal parameter value and the infrared letter of the i-th-1 time sampling
Number parameter is done difference and is referred to, by the i-th-1 time sampled value one of the i-th sampled value of each infrared receiving tube Yu each infrared receiving tube
One does difference accordingly.
Difference between infrared signal parameter value and the infrared signal parameter value of the i-th-1 time sampling of i & lt sampling is more than
Sudden change threshold value refers to that the signal parameter value of at least one infrared receiving tube in the infrared signal parameter value that i & lt is sampled is more than being somebody's turn to do
The signal parameter value of the i-th-1 time sampling of infrared receiving tube.
In embodiments of the present invention, a front sampled signal of the infrared signal that first time is undergone mutation by MCU is as base
Quasi-parameter value, this parameter value includes the reference value of each infrared receiving tube.
Jump signal number x is initialized by step S303:MCU, and x initial value is one.
When the infrared signal parameter value of i & lt sampling is undergone mutation relative to the infrared signal parameter value of the i-th-1 time sampling
Time, MCU determines that the intensity of illumination of environment at infrared touch display screen may have occurred change, now to jump signal number
Whether be calculated as one, be persistence change to further determine that the intensity of illumination of environment at infrared touch display screen, MCU needs
Continue monitoring the sudden change infrared signal parameter value monitored continuously is counted.
Step S304:MCU receives the infrared signal parameter value of i+1 time sampling.
Whether step S305:MCU determines the difference between infrared signal parameter value and the reference parameter value of i+1 time sampling
It is respectively less than signal constant threshold, if it is, perform step S306；Otherwise to performing step 301 after i+1, i.e. to infrared receiver
When pipe carries out continuous sampling, if the number of the infrared signal parameter value undergone mutation relative to reference parameter value is less than N, then
MCU determines that at infrared touch screen, the intensity of illumination of environment does not occur the change of persistence, and x value is reset and i+1 by MCU
Rear return performs step S301.
In the embodiment of the present invention, determine that the method for signal constant threshold includes: in advance by infrared signal parameter value division etc.
Level, the corresponding numerical value section of each level of signal, still fall within after i & lt sampling infrared signal parameter value up-down signal constant threshold
Same level of signal.
X value is added one by step S306:MCU, and performs subsequent step S307.
Step S307:MCU determines whether x value is more than or equal to N, and wherein, N is the integer more than or equal to 2, if so, holds
Row step S308, otherwise returns after i+1 and performs step S304.
Step S308:MCU generates brightness of display screen regulating command, wherein, carries infrared in brightness of display screen regulating command
Level of signal corresponding to signal parameter value.
Step S309:MCU sends brightness of display screen regulating command to primary processor；Primary processor receives showing from MCU
Display screen brightness regulation instructs, and determines brightness of display screen regulation etc. according to the level of signal in brightness of display screen regulating command
Level；Primary processor is according to the brightness of the brightness of display screen regulation grade regulation display screen determined.
In alternatively possible embodiment, above-mentioned steps S302 is changed to: when MCU determines the infrared letter that i & lt is sampled
When difference between the infrared signal parameter value of number parameter value and the i-th-1 time sampling is more than sudden change threshold value, MCU determines that i & lt is adopted
The level of signal corresponding to infrared signal parameter value of sample is n.In the embodiment of the present invention, in advance by the letter of infrared signal parameter value
Number intensity divided rank, the corresponding numerical value section of each level of signal.
Accordingly, above-mentioned steps S305 is changed to: MCU determines the signal etc. of the infrared signal parameter value of i+1 time sampling
Whether level is n, if it is, perform step S306；Otherwise to performing step S301 after i+1.
In the embodiment of the present invention, when MCU determines what the infrared signal parameter value that i & lt is sampled was sampled relative to the i-th-1 time
When infrared signal parameter value is undergone mutation, MCU further determines that the infrared signal parameter of N-1 sampling after i & lt sampling
Value whether undergo mutation relative to the infrared signal parameter value of the i-th-1 time sampling and suddenly change after grade and i & lt sampling
The grade of infrared signal parameter value is identical, if the infrared signal parameter value that N-1 time after i & lt sampling is sampled is relative to the
The infrared signal parameter value of i-1 sampling sends the infrared signal ginseng of the level of signal after sudden change and sudden change and i & lt sampling
The level of signal of numerical value is identical, then MCU determines that the intensity of illumination of infrared touch screen local environment there occurs that persistence changes, MCU
Brightness by primary processor correspondence regulation display screen.
The present invention still further provides the 3rd embodiment of brightness of display screen control method, and in this embodiment, MCU is only
For the sampled signal of infrared touch frame being sent to primary processor, primary processor perform above-described embodiment one and embodiment
Brightness of display screen control method shown in two, concrete regulating step sees embodiment one and two, repeats no more.
Fig. 7 is the structural representation of the embodiment of the present invention two terminal unit.As it is shown in fig. 7, this terminal unit includes main place
Reason device 401, launch scanning circuit 402, receive scanning circuit 403, infrared transmitting tube matrix 404, infrared receiving tube matrix 405 with
And sample circuit 406.
Launch scanning circuit 402 to be connected with primary processor 401, for driving infrared under the control of primary processor 401
Penetrate the infrared transmitting tube in pipe matrix 404 and launch infrared ray；Receive scanning circuit 403 to be connected with primary processor 401, for leading
The infrared receiving tube receiving infrared-ray controlled in lower driving infrared receiving tube matrix 405 of processor 401；Sample circuit 406 points
It is not connected with infrared receiving tube matrix 405 and primary processor 401, under the control of primary processor 401, according to time default
Between be spaced the infrared ray to receiving in infrared receiving tube matrix 405 and sample, and sampled signal is sent to primary processor
401 determine whether receive the touch control operation of user and determine the operating position of user for primary processor 401.
In terminal unit shown in Fig. 7, infrared touch-control system unites two into one with master control system, by primary processor to terminal
Equipment is uniformly controlled, and when implementing the brightness of display screen control method of the present invention, primary processor performs above-described embodiment
One and embodiment two in brightness of display screen control method, concrete execution process sees embodiment one and embodiment two, the most not
Repeat the most one by one.
Fig. 8 is the structural representation of a kind of possible processing means of the embodiment of the present invention, and this processing means can be as Fig. 1
In MCU or Fig. 7 in primary processor use.As shown in Figure 8, this processing means 500, its structure comprises the steps that at least one
Processor (processor) 501, internal memory (memory) 502, peripheral interface (peripheralinterface) 503, defeated
Enter/output subsystem (I/Osubsystem) 504, power circuit 505 and communication line 506.
In fig. 8, arrow represents the communication between the element that can carry out computer system and data transmission, and it can profit
With high-speed serial bus (high-speed serial bus), parallel bus (parallelbus), storage area network (SAN,
Storage Area Network) and/or other suitable communication technologys and realize.
Internal memory 502 can include operating system 512 and brightness of display screen regulation routine 522.Such as, internal memory 502 can include height
Speed random access memory (high-speed random access memory), disk, static RAM
(SPAM), dynamic random access memory (DRAM), read only memory (ROM), flash memory or non-voltile memory.Internal memory 502 can
Storage is for operating system 512 and the program coding of brightness of display screen regulation routine 522, say, that can include processing means
Software module, instruction set architecture or the multiple data outside it needed for the action of 500.Now, processor 501 or ancillary equipment
Interface 506 other controllers such as grade can be controlled by processor 501 with the access of internal memory 502.
Peripheral interface 503 can be by the input of processing means 500 and/or output ancillary equipment and processor 501 and interior
Deposit 502 to combine.Further, input/output subsystem 504 can be by multiple input/output ancillary equipment and peripheral interface 506
Combine.Such as, input/output subsystem 504 can include display screen, keyboard, mouse, printer or as required for shining
The controller that the ancillary equipment such as camera, various sensors combines with peripheral interface 503.Concrete, at input/output
System 504 includes for infrared touch-control radiating circuit and infrared touch-control reception circuit being combined with peripheral interface 503
Controller.According to another side, input/output periphery also can connect with ancillary equipment without input/output subsystem 504
Mouth 503 combines, and the most infrared touch-control radiating circuit and infrared touch-control receive circuit also can be without input/output subsystem 504
And combine with peripheral interface 503.
Power circuit 505 can completely or partially supply electric power to the component of terminal unit.Such as, power circuit
505 can include the power supply in cycle as individual in one of electric power management system, battery or exchange (AC) more than, charging system, power failure
Testing circuit (power failuredetection circuit), power converter or inverter, power state marker character or
Other components any generate for electric power, manage, distributed.
Communication line 506 can utilize at least one Cycles Interface to communicate with other computer systems, as with main control
System communicates.
Processor 501 is stored in the software module in internal memory 502 by execution or instruction set architecture can perform processing means
The several functions of 500 and process data.It is to say, processor 501 is by performing basic arithmetic, logic and department of computer science
The input/output calculation of system, may be configured as processing the order of computer program.
The embodiment of Fig. 8 is only an example of processing means 500 in terminal unit, and processing means 500 can have as follows
Structure or configuration: omit the partial circuit element shown in Fig. 8, or be further equipped with the component added not shown in Fig. 8,
Or combine the component in more than two cycles.Such as, for the computer system of communication terminal of mobile environment except Fig. 8 institute
Outside the component shown, also can farther include sensor etc., and may also comprise in communication line 60506 for multiple logical
The circuit of the RF communication of letter mode (WiFi, 6G, LTE, Bluetooth, NFC, Zigbee etc.).Can be included in processing means 500
In the integrated circuit that can be becomed privileged by the signal processing or application program including a cycle more than of component hardware,
Software or hardware and software a combination of both and realize.
When processing means shown in Fig. 8 is applied to the terminal unit shown in Fig. 1 as MCU, in the input shown in Fig. 8/defeated
Go out subsystem 504 to include for scanning circuit will be launched, receive scanning circuit and primary processor and peripheral interface 503 phase
In conjunction with controller.According to another side, launch scanning circuit, receive scanning circuit and primary processor also can without input/
Output subsystem 504 and combine with peripheral interface 503.When the processing means shown in Fig. 8 is applied to Fig. 1 institute as MCU
During the terminal unit shown, the display screen that the processing means shown in Fig. 8 performs in above-described embodiment one to embodiment three as MCU is bright
Degree control method.
When processing means shown in Fig. 8 is applied to the terminal unit shown in Fig. 7 as primary processor, defeated shown in Fig. 8
Enter/output subsystem 504 include for by transmitting scanning circuit, receive scanning circuit combine with peripheral interface 503
Controller.According to another side, launch scanning circuit, receiving scanning circuit also can be without input/output subsystem 504
Combine with peripheral interface 503.Set when the processing means shown in Fig. 8 is applied to the terminal shown in Fig. 7 as primary processor
Time standby, the processing means shown in Fig. 8 performs the brightness of display screen in above-described embodiment one and embodiment two as primary processor and adjusts
Joint method.
The brightness of display screen regulation scheme of the embodiment of the present invention, only when the infrared signal parameter of the most double sampling
When value is undergone mutation both with respect to reference parameter value, just can generate brightness of display screen regulating command, it is to avoid when there be mobile object
Between display screen and light source, and when mobile object the most quickly moves, cause that touch screen collects is red
The numerical value of outer touching signals is fluctuated, in turn results in the problem that mistake generates brightness of display screen regulating command.Further, display is worked as
When screen is for infrared touch display screen, can directly use the infrared receiving tube being originally just disposed thereon to gather infrared touch-control letter
Number, overcome the problem needing in prior art additionally to arrange light sensitive device.
For convenience of description, it is divided into various unit to be respectively described with function when describing apparatus above.Certainly, this is being implemented
The function of each unit can be realized in same cycle or multiple periodic software and/or hardware during invention.
Each cycle embodiment in this specification all uses the mode gone forward one by one to describe, identical between each cycle embodiment
Similar part sees mutually, and what each cycle embodiment stressed is the difference with other embodiments.Especially
Its, is for device or system embodiment, owing to it is substantially similar to embodiment of the method, so describing fairly simple, phase
The part seeing embodiment of the method in place of pass illustrates.Apparatus and system embodiment described above is only schematically
, the unit wherein illustrated as separating component can be or may not be physically separate, shows as unit
Parts can be or may not be physical location, i.e. may be located at a cycle place, or can also be distributed to multiple
On periodic network unit.Some or all of module therein can be selected according to the actual needs to realize the present embodiment scheme
Purpose.Those of ordinary skill in the art, in the case of not paying creative work, are i.e. appreciated that and implement.
Below it is only the detailed description of the invention of the present invention, it is noted that those skilled in the art are come
Saying, under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications, these improvements and modifications also should be regarded as
Protection scope of the present invention.
Claims (10)
1. a brightness of display screen control method, it is characterised in that including:
When there is no user's touch, the infrared receiving tube in infrared touch frame is carried out periodic samples；
Determine whether the difference between infrared signal parameter value and the reference parameter value of N continuous time sampling is all higher than threshold value of suddenling change,
Described N is the integer more than or equal to 2；
When difference between infrared signal sampled value and the basic parameter of N continuous time sampling is all higher than sudden change threshold value, generate aobvious
Show that brightness regulation instructs.
Method the most according to claim 1, it is characterised in that determine infrared signal parameter value and the base of N continuous time sampling
Difference between quasi-parameter is all higher than the mode of sudden change threshold value, including:
Determine that the difference between the infrared signal parameter value of present sample and the infrared signal parameter value of last sampling is the biggest
In sudden change threshold value；
If the difference between the infrared signal parameter value of the infrared signal sampled value of present sample and last sampling is more than prominent
Variable threshold value, it is determined that the infrared signal parameter value of-1 sampling of the N continuous after present sample is infrared with described present sample
Whether the difference between signal parameter value is respectively less than signal constant threshold；
If the infrared signal ginseng of the infrared signal parameter value of-1 sampling of the N continuous after present sample and described present sample
Difference between numerical value is respectively less than signal constant threshold, it is determined that the infrared signal parameter value of N continuous time sampling and basic parameter
Between difference be all higher than suddenly change threshold value.
Method the most according to claim 1, it is characterised in that determine infrared signal parameter value and the base of N continuous time sampling
Difference between quasi-parameter is all higher than the mode of sudden change threshold value, including:
Determine that the difference between the infrared signal parameter value of present sample and the infrared signal parameter value of last sampling is the biggest
In sudden change threshold value；
If the difference between the infrared signal parameter of the infrared signal parameter value of present sample and last sampling is more than sudden change
Threshold value, it is determined that level of signal n corresponding to infrared signal parameter value of present sample；
Whether the level of signal corresponding to infrared signal parameter value of-1 sampling of the N continuous after determining present sample is n；
If the level of signal corresponding to infrared signal parameter value of N-1 the sampling of contact after present sample is n, the most really
Determine the difference between infrared signal parameter value and the basic parameter of N continuous time sampling and be all higher than threshold value of suddenling change.
The most according to the method in any one of claims 1 to 3, it is characterised in that the infrared signal parameter value of sampling every time
Including: the signal parameter value of each infrared receiving tube in infrared touch frame；
Determine the mode more than sudden change threshold value of the difference between infrared signal parameter value and the reference parameter value arbitrarily once sampled,
Including:
Determine signal parameter value and the benchmark whether having at least one infrared receiving tube in each infrared receiving tube of this sampling
Difference between parameter value is more than sudden change threshold value；
When the signal parameter value and the reference parameter value that have at least one infrared receiving tube in each infrared receiving tube of this sampling
Between difference more than sudden change threshold value time, determine that the difference between infrared signal parameter value and the reference parameter value of this sampling is big
In sudden change threshold value.
Method the most according to claim 4, it is characterised in that the infrared signal parameter value of N continuous time sampling is joined with benchmark
Difference between numerical value is all higher than threshold value of suddenling change, including:
In N continuous time sampling, between infrared signal parameter value and the reference parameter value of at least one identical infrared receiving tube
Difference more than sudden change threshold value.
Method the most according to claim 1, it is characterised in that when infrared signal parameter value and the benchmark of N continuous time sampling
When difference between parameter is all higher than sudden change threshold value, generate display brightness regulating command, including:
Determine the level of signal corresponding to infrared signal parameter value that described n times are sampled；
According to the level of signal corresponding to the infrared signal parameter value that described n times are sampled, determine that brightness of display screen regulates grade；
Regulate grade according to described brightness of display screen, generate brightness of display screen regulating command.
7. a brightness of display screen adjusting means, it is characterised in that including: primary processor, infrared touch-control processor and infrared touch
Control transmission circuit；
Described infrared touch-control processor is connected with described primary processor and described infrared touch-control transmission circuit respectively, described main process
Device is connected with described display screen；
Described infrared touch-control processor, for when not having user's touch, enters the infrared receiving tube in infrared touch frame
Line period is sampled；Determine whether the difference between infrared signal parameter value and the reference parameter value of N continuous time sampling is all higher than
Sudden change threshold value, described N is the integer more than or equal to 2；Between infrared signal parameter value and the basic parameter of N continuous time sampling
Difference be all higher than suddenly change threshold value time, generate display brightness regulating command；
Described primary processor, is used for performing described brightness of display screen regulating command.
Device the most according to claim 7, it is characterised in that described infrared touch-control processor is additionally operable to regulate infrared touch-control
The transmitting power of radiating circuit in transmission circuit.
9. a brightness of display screen adjusting means, it is characterised in that including: primary processor, infrared touch-control processor, infrared touch-control
Transmission circuit and display screen；
Described infrared touch-control processor is connected with described primary processor and described infrared touch-control transmission circuit respectively, described main process
Device is connected with described display screen；
Described infrared touch-control processor, for being sent to described main process by the infrared signal sampled from infrared touch-control transmission circuit
Device；
Described primary processor, appoints to power 6 for performing above-mentioned power 1 according to the infrared signal from described infrared touch-control processor
One described brightness of display screen control method, and according to the brightness of brightness of display screen regulating command regulation display screen.
10. a brightness of display screen adjusting means, it is characterised in that including: primary processor, infrared touch-control transmission circuit and display
Screen；
Described primary processor is connected with described infrared touch-control transmission circuit respectively and described display screen connects；
Described primary processor, for performing above-mentioned power 1 to the brightness of display screen control method according to any one of power 6.
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Address after: 266555 Qingdao economic and Technological Development Zone, Shandong, Hong Kong Road, No. 218 Patentee after: Hisense Visual Technology Co., Ltd. Address before: 266555 Qingdao economic and Technological Development Zone, Shandong, Hong Kong Road, No. 218 Patentee before: QINGDAO HISENSE ELECTRONICS Co.,Ltd. |