CN105335022A - AGC (automatic gain control) method and system for infrared geminate transistor touch screen - Google Patents
AGC (automatic gain control) method and system for infrared geminate transistor touch screen Download PDFInfo
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
- G06F3/0421—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means by interrupting or reflecting a light beam, e.g. optical touch-screen
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
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- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04109—FTIR in optical digitiser, i.e. touch detection by frustrating the total internal reflection within an optical waveguide due to changes of optical properties or deformation at the touch location
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Abstract
The invention relates to an AGC (automatic gain control) method and system for an infrared geminate transistor touch screen. The method comprises the following steps: acquiring a light value of the surrounding environment of the touch screen to obtain the change condition of the light value of the surrounding environment of the touch screen; judging a shielding event of the touch screen and a shielding removal event of the touch screen according to the change condition of the light value; if the shielding event of the touch screen is monitored, setting the AGC of the touch screen to be in a locking state; and if the shielding removal event of the touch screen is monitored, setting the AGC of the touch screen to be in an unlocking state. The invention can solve the problem of instantaneous touch abnormity when the touch screen is shielded and moved away.
Description
Technical field
The present invention relates to education interactive intelligent tablet computer technical field, particularly relate to infrared tube touch-screen AGC control method and system.
Background technology
To educate interactive intelligent tablet computer, existing infrared tube touch-screen in use AGC (automaticgaincontrol, automatic growth control) can adjust in real time.Concrete mode is: education interactive intelligence blackboard is when classroom uses, close in dull and stereotyped front when teacher does not close complete machine after class blackboard, because the reflectivity of the blackboard back side to Infrared is higher, reflective ADC in flat board (i.e. A/D converter) signal that will cause existed is higher, and AGC can carry out adjusting ADC signal is lowered automatically in such cases; After this, when blackboard is opened next time, even if also to there is ADC signal in normal circumstances on the low side for flat board, momentary touch is abnormal to cause flat board to occur.Although AGC automatically can carry out adjusting to make ADC raise and reaches desired value in this case, AGC is adjusted to the process need certain hour that ADC recovers proper level automatically, cannot realize touch function, for user makes troubles at middle plateform during this period of time.
Summary of the invention
Based on this, infrared tube touch-screen AGC control method provided by the invention and system, can eliminate touch-screen and block momentary touch abnormal problem when removing.
The present invention is by the following technical solutions:
One aspect of the present invention provides infrared tube touch-screen AGC control method, comprising:
Obtain the light value of touch-screen surrounding environment, draw the situation of change of touch-screen surrounding environment light value;
What judge the event of blocking of touch-screen and touch-screen according to the situation of change of light value blocks the event of removing;
If what monitor touch-screen blocks event, then touch-screen AGC is set to lock-out state; If what monitor touch-screen blocks the event of removing, then touch-screen AGC is set to released state.
Preferably, comprise before the light value of described acquisition touch-screen surrounding environment,
Detect that touch-screen powers on event, initialization touch-screen AGC is released state;
Handshake request is initiated to touch-screen;
If receive touch-screen to return confirmation instruction of shaking hands, shake hands described in parsing and confirm that instruction obtains the collection period of light value and the data type of transmission light value; If do not receive touch-screen to return confirmation instruction of shaking hands, handshake request is initiated to touch-screen again in interval to schedule;
The light value of described acquisition touch-screen surrounding environment, comprises,
By being preset in the light value of light sensitive device according to different directions around described collection period collection touch of touch frame diverse location.
Preferably, the data type of described transmission light value comprises native data and lifting signal;
The light value of described acquisition touch-screen surrounding environment, draws the situation of change of touch-screen surrounding environment light value, comprises,
If the data type of described transmission light value is native data, the light value of described light sensitive device collection touch surrounding environment;
Obtaining the light value that described light sensitive device gathers at every turn, is that light value rises or light value declines according to the light value of described light value determination touch-screen surrounding environment;
The light value of described acquisition touch-screen surrounding environment, draws the situation of change of touch-screen surrounding environment light value, also comprises,
If the data type of described transmission light value is lifting signal, the light value of described light sensitive device collection touch surrounding environment, draws ascensional range or the fall of light value in setting-up time length, and described setting-up time length is greater than the collection period of described light sensitive device; Rising edge signal or negative edge signal is generated according to described ascensional range or fall;
Obtain rising edge signal or the negative edge signal of the generation of described light sensitive device, if rising edge signal, be defined as light value and rise; If negative edge signal, be defined as light value and decline.
Preferably, the described light value according to described light value determination touch-screen surrounding environment is that light value rises or light value declines, and comprises,
This light value gathered and the last light value gathered are compared; If this light value gathered is greater than the last light value gathered, and the absolute value of both differences is greater than setting change thresholding, is defined as light value and rises; If this light value gathered is less than the last light value gathered, and the absolute value of both differences is greater than setting change thresholding, is defined as light value and declines;
Or, this light value gathered and the last light value gathered are compared, and record comparative result; If the comparative result of set point number is identical continuously, and the light value being this collection is greater than the last light value gathered, be then defined as light value and rise; If the comparative result of set point number is identical continuously, and the light value being this collection is less than the last light value gathered, be then defined as light value and decline;
Or, this light value gathered and the last light value gathered are compared, and record comparative result; If the comparative result of set point number is totally the trend that light value rises continuously, is then defined as light value and rises; If the comparative result of set point number is totally in light value downward trend continuously, is then defined as light value and declines.
Describedly generate rising edge signal or negative edge signal according to described ascensional range or fall, comprise,
Described ascensional range or fall and setting amplitude threshold are compared; If ascensional range is greater than setting amplitude threshold, generate rising edge signal; If fall is greater than setting amplitude threshold, generate negative edge signal;
The described situation of change according to light value judges that the event of blocking of touch-screen and the event of removing of blocking of touch-screen comprise,
If light value rises, what be defined as generation touch-screen blocks the event of removing; If light value declines, what be defined as generation touch-screen blocks event.
The present invention provides infrared tube touch-screen AGC regulating system on the other hand, comprising:
Light value acquisition module, for obtaining the light value of touch-screen surrounding environment, draws the situation of change of touch-screen surrounding environment light value;
Block event monitoring module, block for what judge the event of blocking of touch-screen and touch-screen according to the situation of change of light value the event of removing;
Adjustment module, if block event for what monitor touch-screen, is then set to lock-out state by touch-screen AGC; If what monitor touch-screen blocks the event of removing, then touch-screen AGC is set to released state.
Preferably, also comprise,
Shake hands and set up module, for detecting that touch-screen powers on event, initialization touch-screen AGC is released state; To the handshake request that touch-screen is initiated; If receive touch-screen to return confirmation instruction of shaking hands, shake hands described in parsing and confirm that instruction obtains the collection period of light value and the data type of transmission light value; If do not receive touch-screen to return confirmation instruction of shaking hands, handshake request is initiated to touch-screen again in interval to schedule;
The light value of described acquisition touch-screen surrounding environment, comprises,
By the light sensitive device preset according to the light value of described collection period collection touch surrounding environment, described light sensitive device is arranged on the diverse location of touch-screen frame, with the light value of collection touch surrounding environment from different directions.
Preferably, the data type of described transmission light value comprises native data and lifting signal;
Described light value acquisition module comprises,
First acquiring unit, if be native data for the data type of described transmission light value, the light value of described light sensitive device collection touch surrounding environment; Obtaining the light value that described light sensitive device gathers at every turn, is that light value rises or light value declines according to the light value of described light value determination touch-screen surrounding environment;
Second acquisition unit, if the data type for described transmission light value is lifting signal, the light value of described light sensitive device collection touch surrounding environment, draw the ascensional range/fall of light value in setting-up time length, described setting-up time length is greater than the collection period of described light sensitive device; Rising edge signal or negative edge signal is generated according to described ascensional range/fall; Obtain rising edge signal or the negative edge signal of the generation of described light sensitive device, if rising edge signal, be defined as light value and rise; If negative edge signal, be defined as light value and decline.
Preferably, the described light value according to described light value determination touch-screen surrounding environment is that light value rises or light value declines, and comprises,
This light value gathered and the last light value gathered are compared; If this light value gathered is greater than the last light value gathered, and the absolute value of both differences is greater than setting change thresholding, is defined as light value and rises; If this light value gathered is less than the last light value gathered, and the absolute value of both differences is greater than setting change thresholding, is defined as light value and declines;
Or, this light value gathered and the last light value gathered are compared, and record comparative result; If the comparative result of set point number is identical continuously, and the light value being this collection is greater than the last light value gathered, be then defined as light value and rise; If the comparative result of set point number is identical continuously, and the light value being this collection is less than the last light value gathered, be then defined as light value and decline;
Or, this light value gathered and the last light value gathered are compared, and record comparative result; If the comparative result of set point number is totally the trend that light value rises continuously, is then defined as light value and rises; If the comparative result of set point number is totally in light value downward trend continuously, is then defined as light value and declines.
Describedly generate rising edge signal or negative edge signal according to described ascensional range or fall, comprise,
Described ascensional range or fall and setting amplitude threshold are compared; If ascensional range is greater than setting amplitude threshold, send rising edge signal; If fall is greater than setting amplitude threshold, send negative edge signal;
Describedly block event monitoring module, if export as light value rises for described light value acquisition module, what be defined as generation touch-screen blocks the event of removing; If described light value acquisition module exports as light value declines, what be defined as generation touch-screen blocks event.
The beneficial effect implementing technique scheme of the present invention comprises: by obtaining the light value of touch-screen surrounding environment, draw the situation of change of touch-screen surrounding environment light value; What judge the event of blocking of touch-screen and touch-screen according to the situation of change of light value blocks the event of removing; If what monitor touch-screen blocks event, then touch-screen AGC is set to lock-out state; If what monitor touch-screen blocks the event of removing, then touch-screen AGC is set to released state.Auxiliary thus by light sensitive device, when determining touch-screen and blocking, locks AGC, prevents it from being lowered by ADC signal, and then eliminates touch-screen and block momentary touch abnormal problem when removing.
Accompanying drawing explanation
Fig. 1 is the hardware environment schematic diagram implementing infrared tube touch-screen AGC control method of the present invention;
Fig. 2 is the indicative flowchart of the infrared tube touch-screen AGC control method of one embodiment of the invention;
Fig. 3 is the schematic diagram of the infrared tube touch-screen AGC regulating system of one embodiment of the invention.
Embodiment
For making goal of the invention of the present invention, feature, advantage can be more obvious and understandable, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, and not all embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment provided by the invention comprises infrared tube touch-screen AGC control method embodiment, also comprises corresponding infrared tube touch-screen AGC regulating system embodiment.Below be described in detail respectively.
Fig. 1 is the hardware environment schematic diagram implementing infrared tube touch-screen AGC control method of the present invention.As shown in Figure 1, the hardware environment implementing infrared tube touch-screen AGC control method of the present invention is: education interactive intelligent tablet computer etc. touches interactive terminal, the touch-screen of this touch interactive terminal is undertaken opening or building by a blackboard or baffle plate, the AGC comprising ADC in this touch interactive terminal and be connected with ADC; In addition, this touch interactive terminal is also provided with single or multiple light sensitive device, as shown in Figure 1, light sensitive device 1,2,3,4 can be arranged on the diverse location of touch-screen frame (touch frame), with the light value of collection touch surrounding environment from different directions, such as can from the light value of the direction collection touch surrounding environment such as upper left/lower-left/upper right/bottom right.
Fig. 2 is the indicative flowchart of the infrared tube touch-screen AGC control method of one embodiment of the invention.As shown in Figure 2, the infrared tube touch-screen AGC control method of the present embodiment comprises the following steps S101 to step S103, is described in detail as follows:
S101, obtains the light value of touch-screen surrounding environment, draws the situation of change of touch-screen surrounding environment light value;
It should be noted that, also comprise the step of shaking hands and confirming in the present embodiment before this step, specifically comprise: detect that touch-screen powers on event, initialization touch-screen AGC is released state; System initiates handshake request to touch-screen; If receive touch-screen to return confirmation instruction of shaking hands, then shake hands described in resolving and confirm that instruction obtains the collection period of light value and the data type of transmission light value, and control light sensitive device by the collection period of this light value and the data type of transmission light value; If do not receive touch-screen to return confirmation instruction of shaking hands, the light value obtaining touch-screen surrounding environment described in handshake request is initiated to touch-screen again in interval to schedule, until receive touch-screen to return confirmation instruction of shaking hands.
In the present embodiment, the light value obtaining touch-screen surrounding environment specifically can be, by the light value of light sensitive device according to described collection period collection touch surrounding environment, described light sensitive device is arranged on the diverse location of touch-screen frame, with the light value of collection touch surrounding environment from different directions.
In the present embodiment, the data type of transmission light value comprises native data and lifting signal.Namely between light sensitive device and touch screen control system the data type of transmission light value information to can be the primary light Value Data collected (simple to the control of light sensitive device, the performance requirement comparatively end to light sensitive device), or for the signal of the representative light value situation of change in certain hour length drawn based on raw data (can alleviate the load of touch screen control system, reduce the transmission quantity of data, but higher to the performance requirement of light sensitive device).Both specifically can be mode:
If the data type of described transmission light value is native data, the light value of described light sensitive device collection touch surrounding environment; Touch screen control system obtains the light value that described light sensitive device gathers at every turn, is that light value rises or light value declines according to the light value of described light value determination touch-screen surrounding environment;
If the data type of described transmission light value is lifting signal, the light value of described light sensitive device collection touch surrounding environment, draws ascensional range or the fall of light value in setting-up time length, and described setting-up time length is greater than the collection period of described light sensitive device; Rising edge signal or negative edge signal is generated according to described ascensional range or fall; Touch screen control system obtains rising edge signal or the negative edge signal of the generation of described light sensitive device, if rising edge signal, is defined as light value and rises; If negative edge signal, be defined as light value and decline.
Wherein, if the data type of described transmission light value is native data, touch screen control system is that the concrete mode that light value rises or light value declines can comprise several as follows according to the light value of described light value determination touch-screen surrounding environment:
This light value gathered and the last light value gathered are compared; If this light value gathered is greater than the last light value gathered, and the absolute value of both differences is greater than setting change thresholding, is defined as light value and rises; If this light value gathered is less than the last light value gathered, and the absolute value of both differences is greater than setting change thresholding, is defined as light value and declines;
Or, this light value gathered and the last light value gathered are compared, and record comparative result; If the comparative result of set point number is identical continuously, and the light value being this collection is greater than the last light value gathered, be then defined as light value and rise; If the comparative result of set point number (such as 3 times, 5 times, according to actual conditions adjustment) is identical continuously, and the light value being this collection is less than the last light value gathered, be then defined as light value and decline;
Or, this light value gathered and the last light value gathered are compared, and record comparative result; If (in continuous set point number, the light value collected for the last time is greater than the light value that first time gathers acquisition to the trend that the comparative result of continuous set point number totally rises in light value; Or in continuous set point number, centre there will be some light value and is less than the last light value gathered, but overall tendency rises in rising and falling), be then defined as light value and rise; Equally, if the comparative result of set point number is totally that (in continuous set point number, the light value collected for the last time is less than the light value that first time gathers acquisition to light value downward trend continuously; Or in continuous set point number, centre there will be some light value and is greater than the last light value gathered, but overall tendency declines in rising and falling), be then defined as light value and decline.Which has been tolerated certain comparative result once or several times situation contrary with general trend has been occurred, and is conducive to improving serious forgiveness, prevents from judging by accident.
Wherein, if the data type of described transmission light value is lifting signal, the specific implementation that light sensitive device generates rising edge signal or negative edge signal according to ascensional range or fall can be: the ascensional range of light value in setting-up time length or fall and setting amplitude threshold are compared; If ascensional range is greater than setting amplitude threshold, generate rising edge signal; If fall is greater than setting amplitude threshold, then generate negative edge signal.
It should be noted that, the time cycle of the light value of collection touch surrounding environment can set according to actual conditions, what the setting of described change thresholding affected the event of blocking of touch-screen and touch-screen blocks the accuracy removing event monitoring, and described change thresholding can set according to practical experience value.
It should be noted that, above-mentioned change thresholding and amplitude threshold can be set to equal, also can be set to unequal.
S102, what judge the event of blocking of touch-screen and touch-screen according to the situation of change of light value blocks the event of removing;
In the present embodiment, according to above-mentioned steps, if draw, light value rises, then what be defined as generation touch-screen blocks the event of removing; If draw, light value declines, then what be defined as generation touch-screen blocks event.
To educate interactive intelligent tablet computer, if lower class hour teacher promotes blackboard, flat board is built, can detect that light value declines, so can determine occur touch-screen block event; Blackboard is pushed open by upper class hour teacher, can detect that light value rises, so can determine occur touch-screen block the event of removing.
S103, if monitor touch-screen block event, then touch-screen AGC is set to lock-out state; If what monitor touch-screen blocks the event of removing, then touch-screen AGC is set to released state.
In the present embodiment, when touch-screen AGC is lock-out state, it can not adjust automatically according to ADC signal; Therefore, when flat board is built by blackboard, what exist in time is reflective, and AGC also can not carry out adjustment automatically makes ADC signal lower.When touch-screen AGC is released state, recover to carry out self-adjusting function according to ADC signal; Therefore, eliminate touch-screen and block momentary touch abnormal problem when removing.
In order to clearer explanation infrared tube touch-screen of the present invention AGC control method, be described with an instantiation below, comprise following process:
S1, complete machine powering, start light sensitive device and touch-screen, and initialization touch-screen AGC is released state.
S2, to the handshake request that touch-screen is initiated;
S3, touch-screen receives handshake request, returns confirmation instruction of shaking hands, described in shake hands and confirm to comprise in instruction the collection period of light value;
In the present embodiment, after optical sensor normally works, system initiates handshake request to touch-screen, and before confiscating touch-screen reply, system can send handshake request instruction to touch-screen repeatedly with certain frequency, confirms instruction until receive to shake hands; That replys at touch-screen shakes hands in confirmation instruction, can resolve and draw the transmission data type of light value and the collection period of light value.
Preferably, the data type transmitting light value comprises native data or lifting signal.
S4, judges whether the data type transmitting light value is native data, if so, performs step S5, otherwise, perform step S7.
S5, light sensitive device is according to the light value of described collection period collection touch surrounding environment.
S6, touch screen control system obtains the light value that described light sensitive device gathers at every turn, is that light value rises or light value declines according to the light value of described light value determination touch-screen surrounding environment; Perform S9.
In the present embodiment, be that light value rises or light value decline comprises above-mentioned three kinds of modes according to the light value of described light value determination touch-screen surrounding environment.
S7, the light value of described light sensitive device collection touch surrounding environment, draw ascensional range or the fall of light value in setting-up time length, described setting-up time length is greater than the collection period of described light sensitive device; Rising edge signal or negative edge signal is generated according to described ascensional range or fall.
S8, touch screen control system obtains rising edge signal or the negative edge signal that described light sensitive device generates (or transmission), if rising edge signal, is defined as light value and rises; If negative edge signal, be defined as light value and decline.Perform step S9.
Whether S9, be that light value rises, if so, perform step S10, otherwise, perform step S11.
S10, what be defined as generation touch-screen blocks the event of removing, and touch-screen AGC is set to released state.
S11, what be defined as generation touch-screen blocks event, and touch-screen AGC is set to lock-out state.
By the infrared tube touch-screen AGC control method of above-described embodiment, flat board is built by teacher's blackboard that closes when not closing complete machine after class, the signal that light value declines can be detected, after flat board receives the signal of light value decline, just determine that now blackboard is in the state of closing, the so dull and stereotyped adjustment locking AGC immediately, being a teacher attends class when blackboard is pushed open, the signal that a light value rises can be detected, after flat board receives the signal of light value rising, just know that now blackboard is in open mode, the latch-release state that dull and stereotyped AGC can be adjusted.
It should be noted that, for aforesaid each embodiment of the method, in order to easy description, it is all expressed as a series of combination of actions, but those skilled in the art should know, the present invention is not by the restriction of described sequence of movement, because according to the present invention, some step can adopt other order or carry out simultaneously.Secondly, those skilled in the art also should know, the embodiment described in instructions all belongs to preferred embodiment, and involved action and module might not be all that the present invention is necessary.
Below the infrared tube touch-screen AGC regulating system that can be used for the embodiment of the present invention performing above-mentioned infrared tube touch-screen AGC control method is described.Fig. 3 is the schematic diagram of the infrared tube touch-screen AGC regulating system of the embodiment of the present invention, for convenience of explanation, the part relevant to the embodiment of the present invention is illustrate only in figure, it will be appreciated by those skilled in the art that, system architecture shown in figure does not form the restriction to system, can comprise the parts more more or less than diagram, or combine some parts, or different parts are arranged.
Fig. 3 is the schematic diagram of the infrared tube touch-screen AGC regulating system of one embodiment of the invention, as shown in Figure 3, the infrared tube touch-screen AGC regulating system of the present embodiment comprises: light value acquisition module 310, block event monitoring module 320 and adjustment module 330, wherein:
Light value acquisition module 310, for obtaining the light value of touch-screen surrounding environment, draws the situation of change of touch-screen surrounding environment light value;
As a preferred implementation, above-mentioned infrared tube touch-screen AGC regulating system also comprises,
Shake hands and set up module 340, for detecting that touch-screen powers on event, initialization touch-screen AGC is released state; To the handshake request that touch-screen is initiated; If receive touch-screen to return confirmation instruction of shaking hands, shake hands described in parsing and confirm that instruction obtains the collection period of light value and the data type of transmission light value; If do not receive touch-screen to return confirmation instruction of shaking hands, handshake request is initiated to touch-screen again in interval to schedule.Corresponding, the concrete mode of light value that above-mentioned light value acquisition module 310 obtains touch-screen surrounding environment comprises, by the light value of default light sensitive device according to described collection period collection touch surrounding environment, described light sensitive device is arranged on the diverse location of touch-screen frame, with the light value of collection touch surrounding environment from different directions.
The data type transmitting light value described in the present embodiment comprises native data and lifting signal.Corresponding, described light value acquisition module 310 can specifically comprise the first acquiring unit and second acquisition unit, specifically describes as follows:
First acquiring unit, if be native data for the data type of described transmission light value, the light value of described light sensitive device collection touch surrounding environment; Touch screen control system obtains the light value that described light sensitive device gathers at every turn, is that light value rises or light value declines according to the light value of described light value determination touch-screen surrounding environment;
In the present embodiment, the described light value according to described light value determination touch-screen surrounding environment is that the embodiment that light value rises or light value declines can comprise several as follows:
This light value gathered and the last light value gathered are compared; If this light value gathered is greater than the last light value gathered, and the absolute value of both differences is greater than setting change thresholding, is defined as light value and rises; If this light value gathered is less than the last light value gathered, and the absolute value of both differences is greater than setting change thresholding, is defined as light value and declines;
Or, this light value gathered and the last light value gathered are compared, and record comparative result; If the comparative result of set point number is identical continuously, and the light value being this collection is greater than the last light value gathered, be then defined as light value and rise; If the comparative result of set point number is identical continuously, and the light value being this collection is less than the last light value gathered, be then defined as light value and decline;
Or, this light value gathered and the last light value gathered are compared, and record comparative result; If the comparative result of set point number is totally the trend (in continuous set point number, the light value collected for the last time is greater than the light value that first time collection obtains) that light value rises continuously, be then defined as light value rising; Equally, if the comparative result of set point number totally in light value downward trend (in continuous set point number, the light value collected for the last time is less than the light value that first time gathers acquisition), is then defined as light value and declines continuously.Which has been tolerated certain comparative result once or several times situation contrary with general trend has been occurred, and is conducive to improving serious forgiveness, prevents from judging by accident.
Described second acquisition unit, if the data type for described transmission light value is lifting signal, the light value of described light sensitive device collection touch surrounding environment, draw ascensional range or the fall of light value in setting-up time length, described setting-up time length is greater than the collection period of described light sensitive device; Rising edge signal or negative edge signal is generated according to described ascensional range or fall; Touch screen control system obtains rising edge signal or the negative edge signal of the generation of described light sensitive device, if rising edge signal, is defined as light value and rises; If negative edge signal, be defined as light value and decline.
In the present embodiment, the described concrete mode generating rising edge signal or negative edge signal according to described ascensional range or fall can be, and described ascensional range or fall and setting amplitude threshold is compared; If ascensional range is greater than setting amplitude threshold, generate rising edge signal; If fall is greater than setting amplitude threshold, generate negative edge signal.
It should be noted that, the time cycle of the light value of collection touch surrounding environment can set according to actual conditions, what the setting of described change thresholding affected the event of blocking of touch-screen and touch-screen blocks the accuracy removing event monitoring, and described change thresholding can set according to practical experience value.
Block event monitoring module 320, block for what judge the event of blocking of touch-screen and touch-screen according to the situation of change of light value the event of removing;
Preferably, if described in block event monitoring module 330 and export as light value rises specifically for described light value acquisition module, what be defined as generation touch-screen blocks the event of removing; If described light value acquisition module exports as light value declines, what be defined as generation touch-screen blocks event.
To educate interactive intelligent tablet computer, if lower class hour teacher promotes blackboard, flat board is built, detects that light value declines, so can determine occur touch-screen block event; Blackboard is pushed open by upper class hour teacher, detects that light value rises, so can determine occur touch-screen block the event of removing.
Adjustment module 330, if block event for what monitor touch-screen, is then set to lock-out state by touch-screen AGC; If what monitor touch-screen blocks the event of removing, then touch-screen AGC is set to released state.
In the present embodiment, when touch-screen AGC is lock-out state, it can not adjust automatically according to ADC signal; Therefore, when flat board is built by blackboard, what exist in time is reflective, and AGC also can not carry out adjustment automatically makes ADC signal lower.When touch-screen AGC is released state, recover to carry out self-adjusting function according to ADC signal; Therefore, eliminate touch-screen and block momentary touch abnormal problem when removing.
It should be noted that, the content such as information interaction, implementation in above-described embodiment between each module/unit, due to preceding method embodiment of the present invention based on same design, its technique effect brought is identical with preceding method embodiment of the present invention, particular content see describing in the inventive method embodiment, can repeat no more herein.
In addition, in the embodiment of the infrared tube touch-screen AGC regulating system of above-mentioned example, the logical partitioning of each functional module only illustrates, can be as required in practical application, facility such as the configuration requirement of corresponding hardware or the realization of software is considered, above-mentioned functions distributed and completed by different functional modules, the inner structure by described infrared tube touch-screen AGC regulating system is divided into different functional modules, to complete all or part of function described above.
In the above-described embodiments, the description of each embodiment is all emphasized particularly on different fields, in certain embodiment, there is no the part described in detail, can see the associated description of other embodiment.
In addition, each functional module stated before this invention in each embodiment can be integrated in a processing module, also can be that the independent physics of modules exists, also can two or more module integrations in a module.Above-mentioned integrated module both can adopt the form of hardware to realize, and the form of software function module also can be adopted to realize.
If described integrated module using the form of software function module realize and as independently production marketing or use time, can be stored in a computer read/write memory medium.One of ordinary skill in the art will appreciate that all or part of step of the method that any embodiment of the present invention is specified is that the hardware (personal computer, server or the network equipment etc.) that can carry out instruction relevant by program has come.This program can be stored in a computer-readable recording medium.This program, when performing, can perform all or part of step of the method that above-mentioned any embodiment is specified.Aforementioned storage medium can comprise any medium that can be program code stored, such as ROM (read-only memory) (Read-OnlyMemory, ROM), random access device (RandomAccessMemory, RAM), disk or CD etc.
It is more than the description to infrared tube touch-screen AGC control method provided by the present invention and system, for one of ordinary skill in the art, according to the thought of the embodiment of the present invention, all will change in specific embodiments and applications, to sum up, this description should not be construed as limitation of the present invention.
Claims (10)
1. infrared tube touch-screen AGC control method, is characterized in that, comprise,
Obtain the light value of touch-screen surrounding environment, draw the situation of change of touch-screen surrounding environment light value;
What judge the event of blocking of touch-screen and touch-screen according to the situation of change of light value blocks the event of removing;
If what monitor touch-screen blocks event, then touch-screen AGC is set to lock-out state; If what monitor touch-screen blocks the event of removing, then touch-screen AGC is set to released state.
2. infrared tube touch-screen AGC control method according to claim 1, is characterized in that, comprise before the light value of described acquisition touch-screen surrounding environment,
Detect that touch-screen powers on event, initialization touch-screen AGC is released state;
Handshake request is initiated to touch-screen;
If receive touch-screen to return confirmation instruction of shaking hands, confirmation instruction of shaking hands described in parsing, obtains the collection period of light value and the data type of transmission light value; If do not receive touch-screen to return confirmation instruction of shaking hands, handshake request is initiated to touch-screen again in interval to schedule;
The light value of described acquisition touch-screen surrounding environment, comprises,
By being preset in the light value of light sensitive device according to different directions around described collection period collection touch of touch frame diverse location.
3. infrared tube touch-screen AGC control method according to claim 2, is characterized in that, the data type of described transmission light value comprises native data or lifting signal;
The light value of described acquisition touch-screen surrounding environment, draws the situation of change of touch-screen surrounding environment light value, comprises,
If the data type of described transmission light value is native data, the light value of described light sensitive device collection touch surrounding environment;
Obtaining the light value that described light sensitive device gathers at every turn, is that light value rises or light value declines according to the light value of described light value determination touch-screen surrounding environment;
The light value of described acquisition touch-screen surrounding environment, draws the situation of change of touch-screen surrounding environment light value, also comprises,
If the data type of described transmission light value is lifting signal, the light value of described light sensitive device collection touch surrounding environment, draws ascensional range or the fall of light value in setting-up time length, and described setting-up time length is greater than the collection period of described light sensitive device; Rising edge signal or negative edge signal is generated according to described ascensional range or fall;
Obtain rising edge signal or the negative edge signal of the generation of described light sensitive device, if rising edge signal, be defined as light value and rise; If negative edge signal, be defined as light value and decline.
4. infrared tube touch-screen AGC control method according to claim 3, is characterized in that, the described light value according to described light value determination touch-screen surrounding environment is that light value rises or light value declines, and comprises,
This light value gathered and the last light value gathered are compared; If this light value gathered is greater than the last light value gathered, and the absolute value of both differences is greater than setting change thresholding, is defined as light value and rises; If this light value gathered is less than the last light value gathered, and the absolute value of both differences is greater than setting change thresholding, is defined as light value and declines.
5. infrared tube touch-screen AGC control method according to claim 3, is characterized in that, the described light value according to described light value determination touch-screen surrounding environment is that light value rises or light value declines, and comprises,
This light value gathered and the last light value gathered are compared, and records comparative result; If the comparative result of set point number is identical continuously, and the light value being this collection is greater than the last light value gathered, be then defined as light value and rise; If the comparative result of set point number is identical continuously, and the light value being this collection is less than the last light value gathered, be then defined as light value and decline;
Or, this light value gathered and the last light value gathered are compared, and record comparative result; If the comparative result of set point number is totally the trend that light value rises continuously, is then defined as light value and rises; If the comparative result of set point number is totally in light value downward trend continuously, is then defined as light value and declines.
6. infrared tube touch-screen AGC control method according to claim 3, is characterized in that, describedly generates rising edge signal or negative edge signal according to described ascensional range or fall, comprises,
Described ascensional range or fall and setting amplitude threshold are compared; If ascensional range is greater than setting amplitude threshold, generate rising edge signal; If fall is greater than setting amplitude threshold, generate negative edge signal;
The described situation of change according to light value judges that the event of blocking of touch-screen and the event of removing of blocking of touch-screen comprise,
If light value rises, what be defined as generation touch-screen blocks the event of removing; If light value declines, what be defined as generation touch-screen blocks event.
7. infrared tube touch-screen AGC regulating system, is characterized in that, comprise,
Light value acquisition module, for obtaining the light value of touch-screen surrounding environment, draws the situation of change of touch-screen surrounding environment light value;
Block event monitoring module, block for what judge the event of blocking of touch-screen and touch-screen according to the situation of change of light value the event of removing;
Adjustment module, if block event for what monitor touch-screen, is then set to lock-out state by touch-screen AGC; If what monitor touch-screen blocks the event of removing, then touch-screen AGC is set to released state.
8. infrared tube touch-screen AGC regulating system according to claim 7, is characterized in that, also comprise,
Shake hands and set up module, for detecting that touch-screen powers on event, initialization touch-screen AGC is released state; To the handshake request that touch-screen is initiated; If receive touch-screen to return confirmation instruction of shaking hands, shake hands described in parsing and confirm that instruction obtains the collection period of light value and the data type of transmission light value; If do not receive touch-screen to return confirmation instruction of shaking hands, handshake request is initiated to touch-screen again in interval to schedule;
The light value of described acquisition touch-screen surrounding environment, comprises,
By being preset in the light value of light sensitive device according to different directions around described collection period collection touch of touch frame diverse location.
9. infrared tube touch-screen AGC regulating system according to claim 8, is characterized in that, the data type of described transmission light value comprises native data and lifting signal;
Described light value acquisition module comprises,
First acquiring unit, if be native data for the data type of described transmission light value, the light value of described light sensitive device collection touch surrounding environment; Obtaining the light value that described light sensitive device gathers at every turn, is that light value rises or light value declines according to the light value of described light value determination touch-screen surrounding environment;
Second acquisition unit, if the data type for described transmission light value is lifting signal, the light value of described light sensitive device collection touch surrounding environment, draw ascensional range or the fall of light value in setting-up time length, described setting-up time length is greater than the collection period of described light sensitive device; Rising edge signal or negative edge signal is generated according to described ascensional range or fall; Obtain rising edge signal or the negative edge signal of the generation of described light sensitive device, if rising edge signal, be defined as light value and rise; If negative edge signal, be defined as light value and decline.
10. infrared tube touch-screen AGC regulating system according to claim 9, is characterized in that,
The described light value according to described light value determination touch-screen surrounding environment is that light value rises or light value declines, and comprises,
This light value gathered and the last light value gathered are compared; If this light value gathered is greater than the last light value gathered, and the absolute value of both differences is greater than setting change thresholding, is defined as light value and rises; If this light value gathered is less than the last light value gathered, and the absolute value of both differences is greater than setting change thresholding, is defined as light value and declines;
Or, this light value gathered and the last light value gathered are compared, and record comparative result; If the comparative result of set point number is identical continuously, and the light value being this collection is greater than the last light value gathered, be then defined as light value and rise; If the comparative result of set point number is identical continuously, and the light value being this collection is less than the last light value gathered, be then defined as light value and decline;
Or, this light value gathered and the last light value gathered are compared, and record comparative result; If the comparative result of set point number is totally the trend that light value rises continuously, is then defined as light value and rises; If the comparative result of set point number is totally in light value downward trend continuously, is then defined as light value and declines.
Describedly generate rising edge signal or negative edge signal according to described ascensional range or fall, comprise,
Described ascensional range or fall and setting amplitude threshold are compared; If ascensional range is greater than setting amplitude threshold, generate rising edge signal; If fall is greater than setting amplitude threshold, generate negative edge signal;
Describedly block event monitoring module, if export as light value rises for described light value acquisition module, what be defined as generation touch-screen blocks the event of removing; If described light value acquisition module exports as light value declines, what be defined as generation touch-screen blocks event.
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| CN201510737058.9A CN105335022B (en) | 2015-10-30 | 2015-10-30 | AGC (automatic gain control) method and system for infrared geminate transistor touch screen |
| PCT/CN2016/090742 WO2017071314A1 (en) | 2015-10-30 | 2016-07-20 | Agc adjustment method and system for infrared pair tube touch screen |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106371548A (en) * | 2016-08-31 | 2017-02-01 | 深圳市创凯智能股份有限公司 | Display screen energy saving control method and device |
| WO2017071314A1 (en) * | 2015-10-30 | 2017-05-04 | 广州视睿电子科技有限公司 | Agc adjustment method and system for infrared pair tube touch screen |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120075191A1 (en) * | 2009-03-27 | 2012-03-29 | Lenovo (Beijing) Co., Ltd. | Optical Touch System and Method for Optical Touch Location |
| CN104144307A (en) * | 2013-05-10 | 2014-11-12 | 硅实验室股份有限公司 | Receiver with automatic gain control freeze function |
| CN104350537A (en) * | 2012-06-08 | 2015-02-11 | 苹果公司 | Electronic device with display brightness control |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201331751Y (en) * | 2009-01-21 | 2009-10-21 | 北京汇冠新技术股份有限公司 | A infrared touch screen control detection system |
| CN104240680B (en) * | 2014-09-16 | 2016-09-07 | 青岛海信电器股份有限公司 | A kind of method of touch screen brightness adjustment and touch control display apparatus |
| CN105335022B (en) * | 2015-10-30 | 2018-05-25 | 广州视睿电子科技有限公司 | AGC (automatic gain control) method and system for infrared geminate transistor touch screen |
-
2015
- 2015-10-30 CN CN201510737058.9A patent/CN105335022B/en active Active
-
2016
- 2016-07-20 WO PCT/CN2016/090742 patent/WO2017071314A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120075191A1 (en) * | 2009-03-27 | 2012-03-29 | Lenovo (Beijing) Co., Ltd. | Optical Touch System and Method for Optical Touch Location |
| CN104350537A (en) * | 2012-06-08 | 2015-02-11 | 苹果公司 | Electronic device with display brightness control |
| CN104144307A (en) * | 2013-05-10 | 2014-11-12 | 硅实验室股份有限公司 | Receiver with automatic gain control freeze function |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017071314A1 (en) * | 2015-10-30 | 2017-05-04 | 广州视睿电子科技有限公司 | Agc adjustment method and system for infrared pair tube touch screen |
| CN106371548A (en) * | 2016-08-31 | 2017-02-01 | 深圳市创凯智能股份有限公司 | Display screen energy saving control method and device |
| CN106371548B (en) * | 2016-08-31 | 2019-03-05 | 深圳市创凯智能股份有限公司 | Display screen energy-saving control method and device |
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