CN104049813A - Interference signal processing method and device - Google Patents
Interference signal processing method and device Download PDFInfo
- Publication number
- CN104049813A CN104049813A CN201410274304.7A CN201410274304A CN104049813A CN 104049813 A CN104049813 A CN 104049813A CN 201410274304 A CN201410274304 A CN 201410274304A CN 104049813 A CN104049813 A CN 104049813A
- Authority
- CN
- China
- Prior art keywords
- receiving element
- signal
- environmental interference
- interference signal
- receiving
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Position Input By Displaying (AREA)
- Optical Communication System (AREA)
Abstract
The embodiment of the invention discloses an interference signal processing method and device, and relates to the field of touch screens. The interference signal processing method and device are used for reducing interference of environmental interference signals in signals transmitted by a transmitting lamp. According to the specific scheme, transmitting units are started within a scanning period in a serial mode, and when any transmitting unit is started to transmit effective signals, a first receiving unit corresponding to the transmitting unit and used for receiving the effective signals is started to obtain sampling signals; when the first receiving unit is started to obtain the sampling signals, a second receiving unit is started to obtain the environmental interference signals collected by the second receiving unit, and the environmental interference signals collected by the second receiving unit and stored last time are updated, wherein N receiving units are arranged between the first receiving unit and the second receiving unit; the stored environmental interference signals collected by the first receiving unit are subtracted from the sampling signals to filter out the environmental interference signals included in the sampling signals of the first receiving unit. The interference signal processing method and device are used in the data collecting process of a touch screen device.
Description
Technical field
The present invention relates to touch-screen field, relate in particular to a kind of disposal route and device of undesired signal.
Background technology
In recent years, infrared touch panel is simple in structure with it, be not subject to electric current, voltage and electrostatic interference, has high stability, high resolving power and the advantage such as easy for installation, becomes the main product in touch-screen market.Infrared touch panel forms by being arranged on the circuit board of arranging on the housing, housing of screen periphery and the infrared signal emission lamp in circuit board transverse and longitudinal direction and infrared signal receiving light.Wherein, infrared signal emission lamp and infrared signal receiving light are corresponding one by one, and infrared signal emission lamp launches infrared signal, form the infrared signal net that transverse and longitudinal is intersected on circuit board.When touching the body touch a certain position of touch-screen, touch body and blocked the infrared signal through the transverse and longitudinal direction of this position, make the infrared signal receiving light of correspondence position cannot receive infrared signal.By detecting infrared signal receiving light, whether receive infrared signal, can determine the position of touch point.
Yet, in ambient light signal, include infrared signal composition, particularly when solar radiation, in ambient light signal, infrared signal composition is higher, as shown in Figure 1, when touching body touch touch-screen, although touch the infrared signal that body has blocked the transverse and longitudinal direction of this position of process that infrared signal emission lamp launches, but the infrared signal in ambient light signal is to exist in real time and angle random, makes infrared signal receiving light corresponding to infrared signal emission lamp that is blocked part still can receive the infrared signal in ambient light signal.Now, although the infrared signal of infrared discharge lamps transmitting is touched, body blocks, but corresponding infrared signal receiving light receives the infrared signal in ambient light signal, when whether the receiving light of detection infrared signal receives infrared signal, can think that this infrared signal receiving light receives the infrared signal of corresponding infrared signal emission lamp transmitting, and the infrared signal of the judging infrared discharge lamps transmitting body that is not touched blocks, the interference of the infrared signal in this ambient light signal can cause the erroneous judgement of touch point information.
In prior art, for the infrared signal in filtering environmental light signal, the interference of the infrared signal in reduction ambient light signal to the infrared signal of infrared discharge lamps transmitting, proposes a kind of hardware antinoise signal interference method.Hardware antinoise signal interference method is mainly that the design by touch-screen hardware circuit comes filtering environmental signal to disturb.Concrete principle is by hardware circuit, to control the frequency of the infrared signal of infrared signal emission lamp transmitting, then by filtering circuit, filters out the infrared signal signal different from the frequency of infrared discharge lamps transmitting infrared signal in ambient light signal.But in this method, when if the frequency of the infrared signal in ambient light signal and infrared discharge lamps transmitting infrared signal is identical or close, by filtering circuit, be difficult to filter out the infrared signal in ambient light signal, therefore, after processing by filtering circuit, infrared discharge lamps transmitting infrared signal still can be subject to the interference of the infrared signal in ambient light signal.
Summary of the invention
Embodiments of the invention provide a kind of disposal route and device of undesired signal, in order to solve in prior art, exist cannot filtering or very difficult filtering environmental light signal in the problem of infrared signal, can reduce the interference to the infrared signal of infrared discharge lamps transmitting of infrared signal in ambient light signal.
For achieving the above object, embodiments of the invention adopt following technical scheme:
The first aspect of the embodiment of the present invention, provides a kind of disposal route of undesired signal, comprising:
Within a scan period, transmitter unit is opened in serial, when its arbitrary transmitter unit is opened to launch useful signal, open the first receiving element of the reception described useful signal corresponding with described arbitrary transmitter unit, to obtain sampled signal, wherein, described sampled signal is included in the environmental interference signal of described the first receiving element periphery;
Opening described the first receiving element, to obtain described sampled signal simultaneously, open the second receiving element with described the first N receiving element in receiving element interval, to obtain the environmental interference signal of the described second receiving element periphery of described the second receiving element collection, and the environmental interference signal that gathers of described the second receiving element that upgrades last stored, N is natural number;
The environmental interference signal subtraction that described sampled signal and described the first receiving element of having stored are gathered, the environmental interference signal comprising in the sampled signal with the first receiving element described in filtering.
In conjunction with first aspect, in a kind of possible implementation, the environmental interference signal that described second receiving element of described renewal last stored gathers, comprising:
The rate of change of environmental interference signal described in the environmental interference calculated signals that described second receiving element of the environmental interference signal of described the second receiving element periphery gathering according to described the second receiving element and described last stored gathers;
If the rate of change of described environmental interference signal is greater than default rate of change threshold value, adopt the environmental interference signal that described second receiving element of last stored gathers described in the environmental interference signal replacing of described the second receiving element periphery that described the second receiving element gathers.
In conjunction with first aspect and above-mentioned possible implementation, in the possible implementation of another kind, the disposal route of this undesired signal also comprises:
According to the rate of change of described environmental interference signal, adjust the collection period of described environmental interference signal;
Described at described the first receiving element of unlatching, to obtain described sampled signal simultaneously, the second receiving element of unlatching and described the first N receiving element in receiving element interval, to obtain the environmental interference signal of the described second receiving element periphery of described the second receiving element collection, comprising:
Opening described the first receiving element, to obtain described sampled signal simultaneously, if described collection period arrives, opening the second receiving element, to obtain the environmental interference signal of the described second receiving element periphery of described the second receiving element collection.
In conjunction with first aspect and above-mentioned possible implementation, in the possible implementation of another kind, described the second receiving element comprises K receiving light, K >=1, and K is natural number;
Between between described the second receiving element and described the first receiving element, be separated with M receiving light, M=N * K, M is natural number;
Wherein, 1/2nd of the receiving light number on the first direction limit that M is touch-screen and the number sum of the receiving light on second direction limit.
In conjunction with first aspect and above-mentioned possible implementation, in the possible implementation of another kind,
When K > 1, the environmental interference signal of described the second receiving element periphery is the sampled signal of j receiving light in described the second receiving element, 1≤j≤K; Or the sampled signal of described the second receiving element is the mean value of the sampled signal of all receiving lights in described the second receiving element.
The second aspect of the embodiment of the present invention, also provides a kind for the treatment of apparatus of undesired signal, comprising:
Sampling unit, for serial within a scan period, open transmitter unit, when its arbitrary transmitter unit is opened to launch useful signal, open the first receiving element of the reception described useful signal corresponding with described arbitrary transmitter unit, to obtain sampled signal, wherein, described sampled signal is included in the environmental interference signal of described the first receiving element periphery;
Acquiring unit, for opening described the first receiving element at described sampling unit, to obtain described sampled signal simultaneously, the second receiving element of unlatching and described the first N receiving element in receiving element interval, to obtain the environmental interference signal of the described second receiving element periphery of described the second receiving element collection;
Updating block, for obtaining at acquiring unit after the environmental interference signal of described the second receiving element periphery, upgrades the environmental interference signal of the described second receiving element collection of last stored, and N is natural number;
Filtering unit, the environmental interference signal subtraction gathering for the described sampled signal that described sampling unit is obtained and described the first receiving element of having stored, the environmental interference signal comprising in the sampled signal with the first receiving element described in filtering.
In conjunction with second aspect, in a kind of possible implementation, described updating block, comprising:
Computing module, the rate of change of environmental interference signal described in the environmental interference calculated signals that the environmental interference signal of described the second receiving element periphery gathering for described the second receiving element obtaining according to described acquiring unit and described second receiving element of described last stored gather;
Update module, if the rate of change of the described environmental interference signal calculating for described computing module is greater than default rate of change threshold value, adopt the environmental interference signal that described second receiving element of last stored gathers described in the environmental interference signal replacing of described the second receiving element periphery that described the second receiving element gathers.
In conjunction with second aspect and above-mentioned possible implementation, in the possible implementation of another kind, the treating apparatus of undesired signal also comprises:
Adjustment unit, adjusts the collection period of described environmental interference signal for the rate of change of the described environmental interference signal that calculates according to described updating block;
Described acquiring unit, also for open described the first receiving element at described collecting unit, to obtain described sampled signal simultaneously, if the described collection period after described adjustment unit is adjusted arrives, open described the second receiving element, to obtain the environmental interference signal of described the second receiving element periphery.
In conjunction with second aspect and above-mentioned possible implementation, in the possible implementation of another kind, described the second receiving element comprises K receiving light, K >=1, and K is natural number;
Between between described the second receiving element and described the first receiving element, be separated with M receiving light, M=N * K, M is natural number;
Wherein, 1/2nd of the receiving light number on the first direction limit that M is touch-screen and the number sum of the receiving light on second direction limit.
In conjunction with second aspect and above-mentioned possible implementation, in the possible implementation of another kind,
When K > 1, the environmental interference signal of described the second receiving element periphery is the sampled signal of j receiving light in described the second receiving element, 1≤j≤K; Or the sampled signal of described the second receiving element is the mean value of the sampled signal of all receiving lights in described the second receiving element.
The disposal route of the undesired signal that the embodiment of the present invention provides and device, with cannot filtering in prior art or very difficult filtering environmental light signal in infrared signal compare, in the serial scan process of this programme, can open successively each transmitter unit, when a transmitter unit is during in opening, other transmitter units are all in closed condition; Therefore, the sampled signal of the first receiving element (receiving element of the useful signal that this transmitter unit of reception corresponding to transmitter unit in opening launched) comprises environmental interference signal and the useful signal of the first receiving element periphery, or the environmental interference signal of the first receiving element periphery; And for the second receiving element with the first N receiving element in receiving element interval, because its corresponding transmitter unit is in closed condition, and and between the first receiving element, be separated with N receiving element, therefore can not collect the useful signal of its corresponding transmitter unit transmitting, and can not collect the useful signal of the transmitter unit transmitting that the first receiving element is corresponding, be merely able to collect the environmental interference signal of the second receiving element periphery.Therefore in this programme, can obtain the sampled signal of the first receiving element and the peripheral environmental interference signal of the second receiving element simultaneously, and store the peripheral environmental interference signal of the second receiving element, when opening transmitter unit that the second receiving element is corresponding with transmitting useful signal in serial, can adopt the environmental interference signal in the sampled signal of environmental interference target signal filter the second receiving element of storage; And adopt the environmental interference signal comprising in the sampled signal of environmental interference target signal filter the first receiving element of the first receiving element collection stored, can reduce the interference to the infrared signal of infrared discharge lamps transmitting of infrared signal in ambient light signal.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Touch point erroneous judgement schematic diagram under a kind of ambient light signal that Fig. 1 provides for background technology of the present invention disturbs;
The infrared touch-screen equipment schematic diagram that Fig. 2 provides for the embodiment of the present invention;
The process flow figure of a kind of undesired signal that Fig. 3 provides for the embodiment of the present invention;
The infrared touch-screen equipment transmitter unit that Fig. 4 provides for the embodiment of the present invention schematic diagram that transmits;
The process flow figure of a kind of undesired signal that Fig. 5 provides for another embodiment of the present invention;
Fig. 6 provides a kind of structural representation for the treatment of apparatus of undesired signal for another embodiment of the present invention;
The structural representation of the treating apparatus of the another kind of undesired signal that Fig. 7 provides for another embodiment of the present invention;
The structural representation of the treating apparatus of the another kind of undesired signal that Fig. 8 provides for another embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the 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, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
In addition, term " system " and " network " are often used interchangeably in this article herein.Term "and/or", is only a kind of incidence relation of describing affiliated partner herein, and expression can exist three kinds of relations, and for example, A and/or B, can represent: individualism A exists A and B, these three kinds of situations of individualism B simultaneously.In addition, character "/", generally represents that forward-backward correlation is to liking a kind of relation of "or" herein.
The disposal route of the undesired signal that the embodiment of the present invention provides, can be applied in the signal acquisition process of touch-screen equipment, wherein, comprises that signal transmitting side and signal receive limit on the touch-screen of touch-screen equipment.It is corresponding that signal transmitting and signal receive limit.This tactile equipment can be infrared touch-screen equipment, can be also other touch-screen equipment, and the present invention does not limit touch-screen equipment.
If touch-screen equipment is infrared touch-screen equipment, as shown in Figure 2, signal transmitting side refers to infrared emission limit, and signal receives limit and refers to infrared reception limit.On infrared emission limit, be arranged with infrared signal emission lamp, infrared reception is arranged with infrared signal receiving light on limit, infrared signal emission lamp and infrared signal receiving light are one to one, an infrared signal emission lamp is launched infrared signal (useful signal of the embodiment of the present invention) for the infrared signal receiving light to corresponding with this infrared signal emission lamp when in opening, in Fig. 2, with stain, represents the infrared signal emission lamp in opening.
In actual applications, the number of the infrared signal emission lamp on the touch-screen of infrared touch-screen equipment and infrared signal receiving light is determined according to the size of the touch-screen of infrared touch-screen equipment.
The embodiment of the present invention provides a kind of disposal route of undesired signal, and as shown in Figure 3, the method can comprise:
S101, within a scan period, transmitter unit is opened in serial, when its arbitrary transmitter unit is opened to launch useful signal, open the first receiving element of the reception useful signal corresponding with this arbitrary transmitter unit, to obtain sampled signal, wherein, sampled signal is included in the environmental interference signal of the first receiving element periphery.
Wherein, transmitter unit can be the emission lamp in the signal transmitting side on the touch-screen of touch-screen equipment, receiving element can be that the signal on the touch-screen of touch-screen equipment receives the receiving light on limit, and the first receiving element is the receiving element corresponding with emission lamp (emission lamp of having opened) in opening.
Wherein, the useful signal in the embodiment of the present invention refers to while opening arbitrary transmitter unit, the signal of this transmitter unit transmitting.For example, when touch-screen equipment is infrared touch-screen equipment, useful signal is the infrared signal of infrared signal emission lamp transmitting.Certainly touch-screen equipment includes but not limited to infrared touch-screen equipment, and corresponding useful signal is also not limited to the infrared signal of infrared signal emission lamp transmitting.
Environmental interference signal in the invention process can be for producing the signal disturbing to useful signal in surround lighting, as approached with useful signal frequency or identical surround lighting composition.For example, when touch-screen equipment is infrared touch-screen equipment, environmental interference signal is the infrared light in surround lighting.Certainly touch-screen equipment includes but not limited to infrared touch-screen equipment, and corresponding environmental interference signal is also not limited to the infrared light in surround lighting.
Sampled signal in the embodiment of the present invention is while opening the first receiving element, the signal that the first receiving element collects.Wherein, because the transmitter unit corresponding with the first receiving element is in opening, and surround lighting exists at any time, the signal (being sampled signal) that therefore the first receiving element collects can comprise: the environmental interference signal of the first receiving element periphery and the useful signal that is received from the transmitter unit transmitting corresponding with the first receiving element; Or the signal that the first receiving element collects (being sampled signal) can comprise: the environmental interference signal of the first receiving element periphery.
Exemplary, when existing, touch on body contact touch-screen, during with the first receiving element with the formed scanning optical path correspondence position of transmitter unit corresponding to the first receiving element, the first receiving element and the transmitter unit formed scanning optical path corresponding with the first receiving element body that can be touched blocks, now, the first receiving element cannot receive the useful signal of the transmitter unit transmitting corresponding with the first receiving element, and the signal that the first receiving element collects (being sampled signal) can comprise: the environmental interference signal of the first receiving element periphery.
When not touching on body contact touch-screen, during with the first receiving element with the formed scanning optical path correspondence position of transmitter unit corresponding to the first receiving element, the first receiving element and the transmitter unit formed scanning optical path corresponding with the first receiving element body that can not be touched blocks, now, the first receiving element can receive the useful signal of the transmitter unit transmitting corresponding with the first receiving element, the signal that the first receiving element collects (being sampled signal) can comprise: the environmental interference signal of the first receiving element periphery and the useful signal that is received from the transmitter unit transmitting corresponding with the first receiving element.
A scan period in the embodiment of the present invention can be scanned successively for the treating apparatus of undesired signal all receiving lights on the touch-screen of touch-screen equipment and the emission lamp formed scanning optical path used time cycle corresponding with this receiving light.
S102, opening the first receiving element, to obtain sampled signal simultaneously, open the second receiving element with the first N receiving element in receiving element interval, to obtain the environmental interference signal of the second receiving element periphery of the second receiving element collection, and the environmental interference signal that gathers of the second receiving element that upgrades last stored, N is natural number.
Wherein, the second receiving element can comprise a receiving light, also can comprise K receiving light, and K is natural number.
Need to illustrate, in embodiments of the present invention, the value of N can arrange according to the angle of radiation of useful signal, when the second receiving element and N the receiving element in the first receiving element interval, the second receiving element can not collect the useful signal of the transmitter unit transmitting corresponding with the first receiving element, as shown in Figure 4, the second receiving element can be upper for receive limit (as long limit) at the residing signal of the first receiving element, the receiving element outside the radiation scope out of the location positioning according to the first receiving element on touch-screen.Certainly, the second receiving element can be for receiving on other different signals reception limits (as minor face) of limit from the residing signal of the first receiving element, location positioning according to the first receiving element on touch-screen receiving element out, the embodiment of the present invention does not limit.
In the embodiment of the present invention, when obtaining the sampled signal of the first receiving element, parallel obtaining with the environmental interference signal of the second receiving element periphery of the second receiving element collection of the first N receiving element in receiving element interval can guarantee: the environmental interference signal of the second receiving element periphery of the second receiving element collection getting is not to be mingled with the useful signal that the transmitter unit corresponding with the first receiving element launched.
Wherein, as shown in Figure 4, if in the embodiment of the present invention when obtaining the sampled signal of the first receiving element, the parallel environmental interference signal that obtains this receiving element periphery that in radiation scope, receiving element (as the receiving element 1 in Fig. 4 and receiving element 2) gathers, and using collect the environmental interference signal as this receiving element periphery time, because this can be at the useful signal that receives in varying degrees the transmitter unit corresponding with the first receiving element (transmitter unit in opening) transmitting, may cause being mingled with in the peripheral environmental interference signal of receiving element 1 or receiving element 2 useful signal of the transmitter unit transmitting corresponding with the first receiving element, can reduce the follow-up signal that carries out while processing, the accuracy rate that signal is processed.
Optionally, the interval of the second receiving element and the first receiving element can also be greater than N receiving element.For example, an interval N+A receiving element of the second receiving element and the first receiving element, A is greater than 0 integer.
It should be noted that, the embodiment of the present invention is serial scan, within a scan period, each receiving element can collect sampled signal, and each receiving element (comprising the first receiving element and the second receiving element) can collect peripheral environmental interference signal.The second receiving element collects after the environmental interference signal of the second receiving element periphery, can upgrade as required the environmental interference signal of the second receiving element collection of last stored.
Further, the method of the environmental interference signal of the second receiving element collection of renewal last stored can be: the rate of change of the environmental interference calculated signals environmental interference signal that the second receiving element of the peripheral environmental interference signal gathering according to the second receiving element and last stored gathers, if the rate of change of environmental interference signal is greater than default rate of change threshold value, the environmental interference signal that adopts the second receiving element of the environmental interference signal replacing last stored of stating the second receiving element periphery that the second receiving element gathers to gather.More detailed process can be with reference to other embodiments of the invention.
S103, the environmental interference signal subtraction that sampled signal and the first receiving element of having stored are gathered, the environmental interference signal comprising in the sampled signal with filtering the first receiving element.
Wherein, sampled signal may be included in the environmental interference signal of the first receiving element periphery, the environmental interference signal that also may comprise useful signal and the first receiving element periphery, the environmental interference signal subtraction that sampled signal and the first receiving element of having stored are gathered, can filtering environmental undesired signal, reduce the interference of environmental interference signal to the useful signal of transmitter unit transmitting.
The disposal route of the undesired signal that the embodiment of the present invention provides, with cannot filtering in prior art or very difficult filtering environmental light signal in infrared signal compare, in the serial scan process of this programme, can open successively each transmitter unit, when a transmitter unit is during in opening, other transmitter units are all in closed condition; Therefore, the sampled signal of the first receiving element (receiving element of the useful signal that this transmitter unit of reception corresponding to transmitter unit in opening launched) comprises environmental interference signal and the useful signal of the first receiving element periphery, or the environmental interference signal of the first receiving element periphery; And for the second receiving element with the first N receiving element in receiving element interval, because its corresponding transmitter unit is in closed condition, and and between the first receiving element, be separated with N receiving element, therefore can not collect the useful signal of its corresponding transmitter unit transmitting, and can not collect the useful signal of the transmitter unit transmitting that the first receiving element is corresponding, be merely able to collect the environmental interference signal of the second receiving element periphery.Therefore in this programme, can obtain the sampled signal of the first receiving element and the peripheral environmental interference signal of the second receiving element simultaneously, and store the peripheral environmental interference signal of the second receiving element, when opening transmitter unit that the second receiving element is corresponding with transmitting useful signal in serial, can adopt the environmental interference signal in the sampled signal of environmental interference target signal filter the second receiving element of storage; And adopt the environmental interference signal comprising in the sampled signal of environmental interference target signal filter the first receiving element of the first receiving element collection stored, can reduce the interference to the infrared signal of infrared discharge lamps transmitting of infrared signal in ambient light signal.
Another embodiment of the present invention provides a kind of disposal route of undesired signal, and as shown in Figure 5, the method can comprise:
S201, within a scan period, transmitter unit is opened in the treating apparatus serial of undesired signal, when its arbitrary transmitter unit is opened to launch useful signal, opens the first receiving element of the reception useful signal corresponding with this transmitter unit, to obtain sampled signal.
Wherein, sampled signal may be included in the environmental interference signal of the first receiving element periphery, also may comprise the environmental interference signal of useful signal and the first receiving element periphery.
It should be noted that, if the current scan period is first scan period, before need to carrying out in first scan period, gather peripheral environmental interference signal, before S201, gather peripheral environmental interference signal, and store the peripheral environmental interference signal that each receiving element collects.Concrete acquisition method can be to open successively each receiving element, to gather peripheral environmental interference signal; Also can open a plurality of receiving elements, to gather peripheral environmental interference signal simultaneously; Can also open all receiving elements, to gather peripheral environmental interference signal simultaneously.The embodiment of the present invention does not limit gathering the method for peripheral environmental interference signal before carrying out in first scan period.
The treating apparatus of S202, undesired signal is being opened the first receiving element, to obtain sampled signal simultaneously, if collection period arrives, unlatching and the first receiving element be the second receiving element of interval N receiving element at least, to obtain the environmental interference signal of the second receiving element periphery of the second receiving element collection.
Wherein, collection period refers to that a receiving element (the first receiving element or the second receiving element) gathers the environmental interference signal institute interlude cycle of this receiving element periphery for twice.
It should be noted that, the collection period that receiving element gathers the environmental interference signal of this receiving element periphery can be the time cycle prestoring in touch-screen equipment.Certainly, the follow-up collection period that can also prestore according to the rate of change adjustment of the environmental interference signal calculating of the treating apparatus of undesired signal.Wherein, the method for the collection period that the treating apparatus of undesired signal prestores according to the rate of change adjustment of environmental interference signal can be with reference to the follow-up associated description of the embodiment of the present invention, and the present embodiment repeats no more here.
It should be noted that, N is any one natural number, and N comprises 0.The value of concrete N can arrange according to the angle of radiation of useful signal.When the angle of radiation of useful signal is 0, N can be set to 0.
Optionally, the second receiving element can comprise K receiving light, K >=1, and K is natural number.Between between the second receiving element and the first receiving element, be separated with M receiving light, when the second receiving element and N the receiving element in the first receiving element interval, M=N * K, M is natural number.
Wherein, when K > 1, the environmental interference signal of the second receiving element periphery can be the sampled signal of j receiving light in the second receiving element, 1≤j≤K, the sampled signal of the second receiving element can be also the mean value of the sampled signal of all receiving lights in the second receiving element, the sampled signal of the second receiving element can also be the mean value of the sampled signal of certain the several receiving light in the second receiving element, and the embodiment of the present invention does not limit this.
Preferably, 1/2nd of the receiving light number on the first direction limit that M is touch-screen equipment and the number sum of the receiving light on second direction limit.Like this, a scan period, between head and the tail first receiving element of scanning and the second receiving element, all keep certain interval, effectively control the transmitter unit corresponding with the first receiving element and the second receiving element is produced to the possibility of disturbing.Wherein, first direction limit can be the long limit of touch-screen equipment, and second direction limit is the minor face of touch-screen equipment; First direction limit can be also the minor face of touch-screen equipment, and second direction limit is the long limit of touch-screen equipment.
It should be noted that, consider transmitter unit certain angle of radiation that transmitted, in the situation that the signal that transmitter unit corresponding to the first receiving element launched does not cause interference to the second receiving element, if the first receiving element is positioned at the long limit of touch-screen equipment, the second receiving element can be positioned at the minor face of touch-screen equipment, and meets at least interval N receiving element of the second receiving element and the first receiving element; If the first receiving element is positioned at the minor face of touch-screen equipment, the second receiving element can be positioned at the long limit of touch-screen equipment, and meets at least interval N receiving element of the second receiving element and the first receiving element.
Wherein, the environmental interference signal of the second receiving element periphery of the second receiving element collection when opening transmitter unit that the second receiving element is corresponding with transmitting useful signal in serial, the environmental interference signal in the sampled signal of filtering the second receiving element.
The rate of change of the environmental interference calculated signals environmental interference signal that the second receiving element of the environmental interference signal of the second receiving element periphery that the treating apparatus of S203, undesired signal gathers according to the second receiving element and last stored gathers.
Wherein, the rate of change of environmental interference signal be used for characterizing the second receiving element gathers ought be last time environmental interference signal and the situation of change of the environmental interference signal that gathers of the second receiving element of last stored.The environmental interference signal difference that second receiving element of ought environmental interference signal last time comparing last stored of larger expression the second receiving element collection of environmental interference change rate signal gathers is larger, and the environmental interference signal intensity of corresponding the second receiving element periphery is larger; The environmental interference signal difference that second receiving element of ought environmental interference signal last time comparing last stored of less expression the second receiving element collection of environmental interference change rate signal gathers is little, and the environmental interference signal intensity of corresponding the second receiving element periphery is little.Wherein, the environmental interference signal of the second receiving element collection of last stored is the last secondary environment undesired signal of environmental interference signal that ought be last time.
The method of the rate of change of concrete computing environment undesired signal can comprise: calculate that the second receiving element gathers ought be last time environmental interference signal and the difference of the environmental interference signal that gathers of the second receiving element of last stored, the environmental interference signal then gathering divided by the second receiving element of last stored by the difference obtaining.The method of the rate of change of computing environment undesired signal also can comprise: calculate that the second receiving element gathers ought be last time environmental interference signal and the difference of the environmental interference signal that gathers of the second receiving element of last stored.The rate of change that can certainly adopt additive method computing environment undesired signal, the embodiment of the present invention does not limit this.
For example, the second receiving element collection ought environmental interference signal last time be V2, the environmental interference signal of the second receiving element collection of last stored is V1, represents the rate of change of environment undesired signal with P, P=(| V2-V1|)/V1 or P=|V2-V1|.
If the rate of change of S204 environmental interference signal is greater than default rate of change threshold value, the environmental interference signal that the treating apparatus of undesired signal adopts the second receiving element of the environmental interference signal replacing last stored of the second receiving element periphery that the second receiving element gathers to gather.
Further, when the rate of change of environmental interference signal is less than or equal to default rate of change threshold value, do not replace the environmental interference signal of the second receiving element collection of last stored.
Wherein, establishing default rate of change threshold value is P
0if, P>P
0, representing that the environmental interference signal difference that second receiving element of ought environmental interference signal last time comparing last stored of the second receiving element collection gathers is larger, the environmental interference signal intensity of corresponding the second receiving element periphery is larger.If the environmental interference signal that still adopts the second receiving element of last stored to gather, may be larger with actual environmental interference deviation of signal, affect the accuracy of subsequent process.Therefore, if the rate of change of environmental interference signal is greater than default rate of change threshold value, the environmental interference signal that need to adopt the second receiving element of the environmental interference signal replacing last stored of the second receiving element periphery that the second receiving element gathers to gather.If P≤P
0represent that the environmental interference signal difference that second receiving element of ought environmental interference signal last time comparing last stored of the second receiving element collection gathers is little, the environmental interference signal intensity of corresponding the second receiving element periphery is little, the environmental interference signal that the second receiving element of last stored gathers and actual environmental interference deviation of signal are little, can not affect the accuracy of subsequent process.Therefore,, if the rate of change of environmental interference signal is less than default rate of change threshold value, do not need to replace the environmental interference signal that the second receiving element of last stored gathers.
Further, can set in advance lower limit and the upper limit of the rate of change threshold value of environmental interference signal, for example, arrange environmental interference signal rate of change threshold value under be limited to P
1, arrange environmental interference signal rate of change threshold value on be limited to P
2, P
1≤ P
0≤ P
2.
It should be noted that, if the rate of change of the environmental interference signal that the treating apparatus of undesired signal obtains according to the environmental interference calculated signals of the second receiving element collection of the environmental interference signal of the second receiving element periphery of the second receiving element collection and last stored is less than P
1if the treating apparatus of undesired signal can be determined the environmental interference signal that collection period (receiving element gathers the environmental interference signal institute interlude cycle of this receiving element periphery for twice) the interval acquiring receiving element of current storage in touch-screen equipment gathers, before and after collection period for the treatment of apparatus of undesired signal, the environmental interference signal intensity of twice collection of an accessed receiving element can be very not large, shows that the variation of actual environmental interference signal of this receiving element periphery is little; Therefore the treating apparatus of undesired signal do not need so to obtain frequently the collection of receiving element environmental interference signal (as, when obtaining the sampled signal of the first receiving element at every turn, all obtain the environmental interference signal that the second receiving element gathers), the treating apparatus of undesired signal can be adjusted collection period, makes it be greater than the currency of collection period.
If the rate of change of the environmental interference signal that the treating apparatus of undesired signal obtains according to the environmental interference calculated signals of the second receiving element collection of the environmental interference signal of the second receiving element periphery of the second receiving element collection and last stored is greater than P
2if the treating apparatus of undesired signal can be determined the environmental interference signal that collection period (receiving element gathers the environmental interference signal institute interlude cycle of this receiving element periphery for twice) the interval acquiring receiving element of current storage in touch-screen equipment gathers, before and after collection period for the treatment of apparatus of undesired signal, the environmental interference signal intensity of twice collection of an accessed receiving element can be larger, may not be inconsistent with the situation of change of the actual environmental interference signal of this receiving element periphery; Therefore the treating apparatus of undesired signal needs to adjust collection period, makes its currency that is less than collection period, so that can get as much as possible up-to-date environmental interference signal.
If the rate of change of the environmental interference signal that the treating apparatus of undesired signal obtains according to the environmental interference calculated signals of the second receiving element collection of the environmental interference signal of the second receiving element periphery of the second receiving element collection and last stored is more than or equal to P
1and be less than or equal to P
2if the treating apparatus of undesired signal can be determined the environmental interference signal that collection period (receiving element gathers the environmental interference signal institute interlude cycle of this receiving element periphery for twice) the interval acquiring receiving element of current storage in touch-screen equipment gathers, before and after collection period for the treatment of apparatus of undesired signal, the accessed environmental interference signal intensity of twice collection of a receiving element and the situation of change of the actual environmental interference signal of this receiving element periphery conforms to; Therefore the treating apparatus of undesired signal does not need to adjust collection period.
Exemplary, the collection period of establishing current environment undesired signal is T0, if P<P
1, the collection period of environmental interference signal is adjusted into T0+t; If P>P
2, the collection period of environmental interference signal is adjusted into T0-t; If P
1≤ P≤P
2, the collection period that keeps environment undesired signal is T0.Wherein, t is the step-length that being used for of pre-setting adjusted the collection period of environment undesired signal.
The environmental interference signal subtraction that the treating apparatus of S205, undesired signal gathers sampled signal and the first receiving element of having stored, the environmental interference signal comprising in the sampled signal with filtering the first receiving element.
Wherein, sampled signal may be included in the environmental interference signal of the first receiving element periphery, the environmental interference signal that also may comprise useful signal and the first receiving element periphery, the environmental interference signal subtraction that sampled signal and the first receiving element of having stored are gathered, can filtering environmental undesired signal, reduce the interference of environmental interference signal to the useful signal of transmitter unit transmitting.
The disposal route of the undesired signal that the embodiment of the present invention provides, with cannot filtering in prior art or very difficult filtering environmental light signal in infrared signal compare, in the serial scan process of this programme, can open successively each transmitter unit, when a transmitter unit is during in opening, other transmitter units are all in closed condition; Therefore, the sampled signal of the first receiving element (receiving element of the useful signal that this transmitter unit of reception corresponding to transmitter unit in opening launched) comprises environmental interference signal and the useful signal of the first receiving element periphery, or the environmental interference signal of the first receiving element periphery; And for the second receiving element with the first N receiving element in receiving element interval, because its corresponding transmitter unit is in closed condition, and and between the first receiving element, be separated with N receiving element, therefore can not collect the useful signal of its corresponding transmitter unit transmitting, and can not collect the useful signal of the transmitter unit transmitting that the first receiving element is corresponding, be merely able to collect the environmental interference signal of the second receiving element periphery.Therefore in this programme, can obtain the sampled signal of the first receiving element and the peripheral environmental interference signal of the second receiving element simultaneously, and store the peripheral environmental interference signal of the second receiving element, when opening transmitter unit that the second receiving element is corresponding with transmitting useful signal in serial, can adopt the environmental interference signal in the sampled signal of environmental interference target signal filter the second receiving element of storage; And adopt the environmental interference signal comprising in the sampled signal of environmental interference target signal filter the first receiving element of the first receiving element collection stored, can reduce the interference to the infrared signal of infrared discharge lamps transmitting of infrared signal in ambient light signal.
Another embodiment of the present invention provides a kind for the treatment of apparatus of undesired signal, and as shown in Figure 6, this device can comprise: sampling unit 31, acquiring unit 32, updating block 33 and filtering unit 34.
Sampling unit 31, for serial within a scan period, open transmitter unit, when its arbitrary transmitter unit is opened to launch useful signal, open the first receiving element of the reception useful signal corresponding with this arbitrary transmitter unit, to obtain sampled signal, wherein, sampled signal is included in the environmental interference signal of the first receiving element periphery.
Acquiring unit 32, for opening the first receiving element at sampling unit 31, to obtain sampled signal simultaneously, the second receiving element of unlatching and the first N receiving element in receiving element interval, to obtain the environmental interference signal of the second receiving element periphery of the second receiving element collection.
Wherein, the second receiving element comprises K receiving light, K >=1, and K is natural number.
Between between the second receiving element and the first receiving element, be separated with M receiving light, M=N * K, M is natural number.Wherein, 1/2nd of the receiving light number on the first direction limit that M is touch-screen and the number sum of the receiving light on second direction limit.
Further, when K > 1, the environmental interference signal of the second receiving element periphery is the sampled signal of j receiving light in the second receiving element, 1≤j≤K; Or the sampled signal of the second receiving element is the mean value of the sampled signal of all receiving lights in the second receiving element.
Updating block 33, for obtaining at acquiring unit 32 after the environmental interference signal of the second receiving element periphery, upgrades the environmental interference signal of the second receiving element collection of last stored, and N is natural number.
Filtering unit 34, the environmental interference signal subtraction gathering for the sampled signal that sampling unit 31 is obtained and the first receiving element of having stored, the environmental interference signal comprising in the sampled signal with filtering the first receiving element.
Further, updating block 33, as shown in Figure 7, specifically can comprise: computing module 331 and update module 332.
Computing module 331, the rate of change of the environmental interference calculated signals environmental interference signal that the environmental interference signal of the second receiving element periphery gathering for the second receiving element obtaining according to acquiring unit 32 and the second receiving element of last stored gather;
Update module 332, if the rate of change of the environmental interference signal calculating for computing module 331 is greater than default rate of change threshold value, the environmental interference signal that adopts the second receiving element of the environmental interference signal replacing last stored of the second receiving element periphery that the second receiving element gathers to gather.
Further, the treating apparatus of this undesired signal, as shown in Figure 8, can also comprise adjustment unit 35.
Adjustment unit 35, adjusts the collection period of environment undesired signal for the rate of change of the environmental interference signal that calculates according to updating block 33.
Further, acquiring unit 32, also for opening the first receiving element at collecting unit 31, to obtain sampled signal simultaneously, if the collection period after adjustment unit 35 is adjusted arrives, open the second receiving element, to obtain the environmental interference signal of the second receiving element periphery.
It should be noted that, the corresponding content of the specific descriptions of part functional module in can reference method embodiment in the treating apparatus of the undesired signal that the embodiment of the present invention provides, the present embodiment is no longer described in detail here.
The treating apparatus of the undesired signal that the embodiment of the present invention provides, with cannot filtering in prior art or very difficult filtering environmental light signal in infrared signal compare, in the serial scan process of this programme, can open successively each transmitter unit, when a transmitter unit is during in opening, other transmitter units are all in closed condition; Therefore, the sampled signal of the first receiving element (receiving element of the useful signal that this transmitter unit of reception corresponding to transmitter unit in opening launched) comprises environmental interference signal and the useful signal of the first receiving element periphery, or the environmental interference signal of the first receiving element periphery; And for the second receiving element with the first N receiving element in receiving element interval, because its corresponding transmitter unit is in closed condition, and and between the first receiving element, be separated with N receiving element, therefore can not collect the useful signal of its corresponding transmitter unit transmitting, and can not collect the useful signal of the transmitter unit transmitting that the first receiving element is corresponding, be merely able to collect the environmental interference signal of the second receiving element periphery.Therefore in this programme, can obtain the sampled signal of the first receiving element and the peripheral environmental interference signal of the second receiving element simultaneously, and store the peripheral environmental interference signal of the second receiving element, when opening transmitter unit that the second receiving element is corresponding with transmitting useful signal in serial, can adopt the environmental interference signal in the sampled signal of environmental interference target signal filter the second receiving element of storage; And adopt the environmental interference signal comprising in the sampled signal of environmental interference target signal filter the first receiving element of the first receiving element collection stored, can reduce the interference to the infrared signal of infrared discharge lamps transmitting of infrared signal in ambient light signal.
Through the above description of the embodiments, those skilled in the art can be well understood to, for convenience and simplicity of description, only the division with above-mentioned each functional module is illustrated, in practical application, can above-mentioned functions be distributed and by different functional modules, completed as required, the inner structure that is about to device be divided into different functional modules, to complete all or part of function described above.The system of foregoing description, the specific works process of device and unit, can, with reference to the corresponding process in preceding method embodiment, not repeat them here.
In the several embodiment that provide in the application, should be understood that, disclosed system, apparatus and method, can realize by another way.For example, device embodiment described above is only schematic, for example, the division of described module or unit, be only that a kind of logic function is divided, during actual realization, can have other dividing mode, for example a plurality of unit or assembly can in conjunction with or can be integrated into another system, or some features can ignore, or do not carry out.Another point, shown or discussed coupling each other or direct-coupling or communication connection can be by some interfaces, indirect coupling or the communication connection of device or unit can be electrically, machinery or other form.
The described unit as separating component explanation can or can not be also physically to separate, and the parts that show as unit can be or can not be also physical locations, can be positioned at a place, or also can be distributed in a plurality of network element.Can select according to the actual needs some or all of unit wherein to realize the object of the present embodiment scheme.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, can be also that the independent physics of unit exists, and also can be integrated in a unit two or more unit.Above-mentioned integrated unit both can adopt the form of hardware to realize, and also can adopt the form of SFU software functional unit to realize.
If the form of SFU software functional unit of usining described integrated unit realizes and during as production marketing independently or use, can be stored in a computer read/write memory medium.Understanding based on such, the all or part of of the part that technical scheme of the present invention contributes to prior art in essence in other words or this technical scheme can embody with the form of software product, this computer software product is stored in a storage medium, comprise that some instructions are with so that a computer equipment (can be personal computer, server, or the network equipment etc.) or processor (processor) carry out all or part of step of method described in each embodiment of the present invention.And aforesaid storage medium comprises: USB flash disk, portable hard drive, ROM (read-only memory) (ROM, Read-Only Memory), the various media that can be program code stored such as random access memory (RAM, Random Access Memory), magnetic disc or CD.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited to this, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; can expect easily changing or replacing, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of described claim.
Claims (10)
1. a disposal route for undesired signal, is characterized in that, comprising:
Within a scan period, transmitter unit is opened in serial, when its arbitrary transmitter unit is opened to launch useful signal, open the first receiving element of the reception described useful signal corresponding with described arbitrary transmitter unit, to obtain sampled signal, wherein, described sampled signal is included in the environmental interference signal of described the first receiving element periphery;
Opening described the first receiving element, to obtain described sampled signal simultaneously, open the second receiving element with described the first N receiving element in receiving element interval, to obtain the environmental interference signal of the described second receiving element periphery of described the second receiving element collection, and the environmental interference signal that gathers of described the second receiving element that upgrades last stored, N is natural number;
The environmental interference signal subtraction that described sampled signal and described the first receiving element of having stored are gathered, the environmental interference signal comprising in the sampled signal with the first receiving element described in filtering.
2. method according to claim 1, is characterized in that, the environmental interference signal that described second receiving element of described renewal last stored gathers, comprising:
The rate of change of environmental interference signal described in the environmental interference calculated signals that described second receiving element of the environmental interference signal of described the second receiving element periphery gathering according to described the second receiving element and described last stored gathers;
If the rate of change of described environmental interference signal is greater than default rate of change threshold value, adopt the environmental interference signal that described second receiving element of last stored gathers described in the environmental interference signal replacing of described the second receiving element periphery that described the second receiving element gathers.
3. method according to claim 2, is characterized in that, also comprises:
According to the rate of change of described environmental interference signal, adjust the collection period of described environmental interference signal;
Described at described the first receiving element of unlatching, to obtain described sampled signal simultaneously, the second receiving element of unlatching and described the first N receiving element in receiving element interval, to obtain the environmental interference signal of the described second receiving element periphery of described the second receiving element collection, comprising:
Opening described the first receiving element, to obtain described sampled signal simultaneously, if described collection period arrives, opening the second receiving element, to obtain the environmental interference signal of the described second receiving element periphery of described the second receiving element collection.
4. method according to claim 1 and 2, is characterized in that, described the second receiving element comprises K receiving light, K >=1, and K is natural number;
Between between described the second receiving element and described the first receiving element, be separated with M receiving light, M=N * K, M is natural number;
Wherein, 1/2nd of the receiving light number on the first direction limit that M is touch-screen and the number sum of the receiving light on second direction limit.
5. method according to claim 4, is characterized in that,
When K > 1, the environmental interference signal of described the second receiving element periphery is the sampled signal of j receiving light in described the second receiving element, 1≤j≤K; Or the sampled signal of described the second receiving element is the mean value of the sampled signal of all receiving lights in described the second receiving element.
6. a treating apparatus for undesired signal, is characterized in that, comprising:
Sampling unit, for serial within a scan period, open transmitter unit, when its arbitrary transmitter unit is opened to launch useful signal, open the first receiving element of the reception described useful signal corresponding with described arbitrary transmitter unit, to obtain sampled signal, wherein, described sampled signal is included in the environmental interference signal of described the first receiving element periphery;
Acquiring unit, for opening described the first receiving element at described sampling unit, to obtain described sampled signal simultaneously, the second receiving element of unlatching and described the first N receiving element in receiving element interval, to obtain the environmental interference signal of the described second receiving element periphery of described the second receiving element collection;
Updating block, for obtaining at acquiring unit after the environmental interference signal of described the second receiving element periphery, upgrades the environmental interference signal of the described second receiving element collection of last stored, and N is natural number;
Filtering unit, the environmental interference signal subtraction gathering for the described sampled signal that described sampling unit is obtained and described the first receiving element of having stored, the environmental interference signal comprising in the sampled signal with the first receiving element described in filtering.
7. device according to claim 6, is characterized in that, described updating block, comprising:
Computing module, the rate of change of environmental interference signal described in the environmental interference calculated signals that the environmental interference signal of described the second receiving element periphery gathering for described the second receiving element obtaining according to described acquiring unit and described second receiving element of described last stored gather;
Update module, if the rate of change of the described environmental interference signal calculating for described computing module is greater than default rate of change threshold value, adopt the environmental interference signal that described second receiving element of last stored gathers described in the environmental interference signal replacing of described the second receiving element periphery that described the second receiving element gathers.
8. device according to claim 7, is characterized in that, also comprises:
Adjustment unit, adjusts the collection period of described environmental interference signal for the rate of change of the described environmental interference signal that calculates according to described updating block;
Described acquiring unit, also for open described the first receiving element at described collecting unit, to obtain described sampled signal simultaneously, if the described collection period after described adjustment unit is adjusted arrives, open described the second receiving element, to obtain the environmental interference signal of described the second receiving element periphery.
9. according to the device described in claim 6 or 7, it is characterized in that, described the second receiving element comprises K receiving light, K >=1, and K is natural number;
Between between described the second receiving element and described the first receiving element, be separated with M receiving light, M=N * K, M is natural number;
Wherein, 1/2nd of the receiving light number on the first direction limit that M is touch-screen and the number sum of the receiving light on second direction limit.
10. device according to claim 9, is characterized in that,
When K > 1, the environmental interference signal of described the second receiving element periphery is the sampled signal of j receiving light in described the second receiving element, 1≤j≤K; Or the sampled signal of described the second receiving element is the mean value of the sampled signal of all receiving lights in described the second receiving element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410274304.7A CN104049813B (en) | 2014-06-18 | 2014-06-18 | A kind of processing method and processing device of interference signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410274304.7A CN104049813B (en) | 2014-06-18 | 2014-06-18 | A kind of processing method and processing device of interference signal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104049813A true CN104049813A (en) | 2014-09-17 |
| CN104049813B CN104049813B (en) | 2017-07-18 |
Family
ID=51502769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410274304.7A Expired - Fee Related CN104049813B (en) | 2014-06-18 | 2014-06-18 | A kind of processing method and processing device of interference signal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104049813B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104571730A (en) * | 2015-01-19 | 2015-04-29 | 青岛海信电器股份有限公司 | Acquiring method of touch point, infrared touch device and display devic |
| CN111865436A (en) * | 2020-07-29 | 2020-10-30 | 北京紫光微电子系统有限公司 | Method and system for removing power line interference and electronic equipment |
| CN116719440A (en) * | 2022-09-28 | 2023-09-08 | 广州众远智慧科技有限公司 | Infrared signal scanning method and device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103455213B (en) * | 2013-08-23 | 2016-12-28 | 广州视睿电子科技有限公司 | Light interference resistance method and circuit |
| CN103777821B (en) * | 2014-01-02 | 2017-01-11 | 青岛海信电器股份有限公司 | Anti-interference method and device for touch system |
-
2014
- 2014-06-18 CN CN201410274304.7A patent/CN104049813B/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104571730A (en) * | 2015-01-19 | 2015-04-29 | 青岛海信电器股份有限公司 | Acquiring method of touch point, infrared touch device and display devic |
| CN104571730B (en) * | 2015-01-19 | 2017-04-12 | 青岛海信电器股份有限公司 | Acquiring method of touch point, infrared touch device and display devic |
| CN111865436A (en) * | 2020-07-29 | 2020-10-30 | 北京紫光微电子系统有限公司 | Method and system for removing power line interference and electronic equipment |
| CN116719440A (en) * | 2022-09-28 | 2023-09-08 | 广州众远智慧科技有限公司 | Infrared signal scanning method and device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104049813B (en) | 2017-07-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102831894A (en) | Command processing method, command processing device and command processing system | |
| US11140179B1 (en) | Cybersecurity investigation tools utilizing information graphs | |
| CN106484637A (en) | Method for providing ancillary equipment by flight management system data | |
| CN103714345A (en) | Method and system for detecting fingertip space position based on binocular stereoscopic vision | |
| CN104049813A (en) | Interference signal processing method and device | |
| WO2017092213A1 (en) | Methods, systems, and media for recognition of user interaction based on acoustic signals | |
| CN104951343A (en) | Starting method and system for application program | |
| CN102830858A (en) | Gesture recognition method and device and touch screen terminal | |
| CN111950537A (en) | Zebra crossing information acquisition method, map updating method, device and system | |
| CN105138375A (en) | Method and device for deploying software | |
| CN105278662A (en) | Interactive control method and apparatus for electronic whiteboard system and system | |
| CN103473145A (en) | Terminal crash reset method, device and terminal | |
| WO2014000577A1 (en) | Adjusting layout size of hyperlink | |
| CN104899129A (en) | Log recording method and device | |
| CN104200164A (en) | Loader virus searching and killing method, device and terminal | |
| CN102830855B (en) | A kind of optical multi-point touch screen controller and control method with anti-dewing function | |
| CN106484226A (en) | The renewal method of calibration of icon and device | |
| CN110457179A (en) | System detecting method, internal memory monitoring method, device, medium and electronic equipment | |
| CN103995624A (en) | Signal-interference-resisting method and device | |
| CN114027558B (en) | Airflow sensor chip, memory programming method thereof and electronic cigarette | |
| CN105373262A (en) | Method and device for identifying invalid light paths of infrared touch screen | |
| CN104407763A (en) | Content input method and system | |
| CN115480823A (en) | Source code homologous detection method, device, equipment and storage medium | |
| CN106328097A (en) | Display brightness control method, display brightness control device, and electronic equipment | |
| CN105814517A (en) | Multi-screen display method and smart bracelet |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170718 Termination date: 20200618 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |