CN104182097B - For preventing the touch control terminal and its method of proximity transducer erroneous judgement - Google Patents
For preventing the touch control terminal and its method of proximity transducer erroneous judgement Download PDFInfo
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- CN104182097B CN104182097B CN201410423656.4A CN201410423656A CN104182097B CN 104182097 B CN104182097 B CN 104182097B CN 201410423656 A CN201410423656 A CN 201410423656A CN 104182097 B CN104182097 B CN 104182097B
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- light
- module
- proximity transducer
- processor
- control terminal
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Abstract
The invention discloses the touch control terminal and its method for preventing proximity transducer erroneous judgement, the touch control terminal includes：Light-sensitive device, photoelectric conversion stable module, boost module and processor, the light-sensitive device, photoelectric conversion stable module, boost module and processor are sequentially connected.External environment condition optical signal is converted to electric signal by the present invention using light-sensitive device, processor power supply is given after electric signal is carried out into voltage stabilizing boosting processing, avoid ambient light from being approached the photodiode of sensor to receive, so as to avoid proximity to sensor malfunction, the technology of sensor and the accuracy of lifting sensor are enriched.
Description
Technical field
The present invention relates to communication technical field, a kind of touch control terminal and its side for being used to prevent proximity transducer erroneous judgement
Method.
Background technology
Proximity transducer in touch control terminal includes infrarede emitting diode and photodiode two large divisions, close to sensing
Device at work by infraluminescence diode launch short-wave infrared light, by photoelectric diode detect the infrared light reflection when
Between come detect whether there is a situation where shelter closer or far from.It is but tactile when there is external ambient light to be radiated in actual use
When on the position of control terminal proximity transducer, the touch-screen of touch control terminal can be reflected on a portion light photodiode,
The light for causing proximity transducer to be mistaken for being launched by its own infrarede emitting diode thing that is blocked reflexes to photodiode
On, false judgment is has shelter to approach, so as to perform malfunction in the case of in no shelter.By
This, touch control terminal may cause mistake such as to close backlight in user's normal use due to being influenceed by external environment condition light, from
The problem of dynamic screen locking etc., made troubles for the routine use of user.
The content of the invention
In view of in place of above-mentioned the deficiencies in the prior art, it is used to prevent proximity transducer it is an object of the invention to provide one kind
The touch control terminal and its method of erroneous judgement, avoid proximity to sensor is influenceed by external ambient light, erroneous judgement and to perform mistake dynamic
Make.
In order to achieve the above object, this invention takes following technical scheme：
A kind of touch control terminal for being used to prevent proximity transducer erroneous judgement, it includes：
Light-sensitive device, the ambient light that the touch-screen for receiving touch control terminal reflects, and convert optical signals to electric signal；
Photoelectric conversion stable module, for stablizing the electric signal；
Boost module, the electric signal for being exported to photoelectric conversion stable module carry out boosting processing, export whole to touch-control
The processor at end, powered to the processor, the processor is by carrying out computing to the electric signal received and judging close
Whether there is ambient light on sensor, control proximity transducer not work when processor is judged as having ambient light, avoid ambient light
The photodiode for being approached sensor receives；
The light-sensitive device, photoelectric conversion stable module, boost module and processor are sequentially connected.
In the described touch control terminal for being used to prevent proximity transducer erroneous judgement, in the photoelectric conversion stable module and liter
Opto-electronic conversion filtration module is additionally provided between die block, for filtering out the current spike letter of photoelectric conversion stable module output
Number.
In the described touch control terminal for being used to prevent proximity transducer erroneous judgement, also set between boost module and processor
Boosting Voltage stabilizing module is equipped with, for the voltage signal after stable boost.
In the described touch control terminal for being used to prevent proximity transducer erroneous judgement, between boosting Voltage stabilizing module and processor
Boosting filtration module is additionally provided with, for filtering out the voltage ripple in the booster voltage signal after boosting Voltage stabilizing module is stable
Signal, and export to processor.
The described touch control terminal for being used to prevent proximity transducer erroneous judgement, in addition to：
Infrared emission light Density Detection module, the reflection light that the photodiode for detecting proximity transducer receives
Density, and judge whether the density of the reflection light is less than the close of the transmitting light of the infrarede emitting diode of proximity transducer
Degree；
The infrared optical module of photovoltaic conversion, for reflection light density less than transmitting light density when, by photosensor
Photovoltaic conversion caused by part is infrared light, is outwards launched by infrarede emitting diode.
A kind of method for preventing proximity transducer erroneous judgement, it includes：
A, the ambient light of the touch-screen refraction of touch control terminal is received by light-sensitive device, converts optical signals to electric signal；
B, the electric signal is stablized by photoelectric conversion stable module；
C, boost module carries out boosting processing to the electric signal that photoelectric conversion stable module exports, and exports to touch control terminal
Processor, powered to the processor, avoid ambient light from being approached the photodiode of sensor and receive ambient light.
In the described method for preventing proximity transducer erroneous judgement, between the step B and step C, described method is also
Including：
B1, by opto-electronic conversion filtration module filter out it is stable after electric signal in current spike signal.
In the described method for preventing proximity transducer erroneous judgement, the step C also includes：By boosting Voltage stabilizing module to rising
Voltage signal after die block boosting processing carries out voltage stabilizing processing.
In the described method for preventing proximity transducer erroneous judgement, the step C also includes：Filtered out by boosting filtration module
Voltage ripple signals after the voltage stabilizing processing of boosting Voltage stabilizing module.
The described method for preventing proximity transducer erroneous judgement, in addition to：
D, when the infrared photodiode of proximity transducer receives the infrared light of shelter reflection, the pole of photoelectricity two is detected
The density for the reflection light that pipe receives, and judge whether the density of the reflection light is less than the infraluminescence two of proximity transducer
The density of the transmitting light of pole pipe；
E, it is infrared by photovoltaic conversion caused by light-sensitive device when the density of reflection light is less than the density for launching light
Light, outwards launched by infrarede emitting diode.
Compared to prior art, touch control terminal and its side provided by the present invention for preventing proximity transducer erroneous judgement
Method, external environment condition optical signal is converted into electric signal using light-sensitive device, processing will be given after electric signal progress voltage stabilizing boosting processing
Device is powered, and is avoided ambient light from being approached the photodiode of sensor and is received, so as to avoid proximity to sensor malfunction, enriches
The technology of sensor and the accuracy of lifting sensor.
Brief description of the drawings
Fig. 1 is the structural frames for being used to prevent the touch control terminal of proximity transducer erroneous judgement in the specific embodiment of the invention
Figure.
Fig. 2 is the process signal that the present invention is used to prevent the preferred embodiment of the touch control terminal of proximity transducer erroneous judgement
Figure.
Fig. 3 is the method flow diagram for being used to prevent the method for proximity transducer erroneous judgement in the specific embodiment of the invention.
Embodiment
The present invention provides a kind of touch control terminal and its method for being used to prevent proximity transducer erroneous judgement.To make the present invention's
Purpose, technical scheme and effect are clearer, clear and definite, the embodiment that develops simultaneously referring to the drawings to the present invention further specifically
It is bright.It should be appreciated that specific embodiment described herein is not intended to limit the present invention only to explain the present invention.
As shown in figure 1, the structured flowchart of the present invention for being used to prevent the touch control terminal of proximity transducer erroneous judgement, it is wrapped
Include：Light-sensitive device 100, photoelectric conversion stable module 200, boost module 400 and processor 700.The light-sensitive device 100, light
Electricity conversion stable module 200, boost module 400 and processor 700 are sequentially connected.
Wherein, light-sensitive device 100 is used for the ambient light for the touch-screen refraction for receiving touch control terminal, and converts optical signals to
Electric signal.Photoelectric conversion stable module 200 is used to be output to boost module 400 after stablizing the electric signal that light-sensitive device 100 is changed.
After the electric signal that boost module 400 exports to photoelectric conversion stable module carries out boosting processing, the processing of touch control terminal is output to
Device 700, powered to the processor 700, avoid ambient light from being approached the photodiode reception of sensor and avoid ambient light quilt
The photodiode of proximity transducer receives, and proximity transducer is mistakenly considered the light of infrarede emitting diode transmitting and is blocked
The light that thing is reflexed on photodiode, sensor malfunction is avoided proximity to, makes to approach sensing so as to avoid external ambient light
Device can not normal operation the problem of.
The electric signal that ambient light is converted into by light-sensitive device, its electric signal are unstable, it is necessary to set a photoelectric conversion
Voltage stabilizing module stablizes the electric signal, subsequent module could be supplied effectively to utilize.Further, since the electric signal after stable be by
The direct transmitting photo-signal of light-sensitive device, its electric signal are very faint, it is impossible to effectively provide power supply signal, therefore, pass through liter
Die block carries out boosting processing, electric signal is risen to certain amplitude so that it meets power supply signal requirement, is output to processing
Device, powered to processor.
Specifically, the light-sensitive device 100 uses the sensitive electronic devices of light sensation such as photo resistance, phototriode, its
It is disposed proximate to the periphery of the photodiode of sensor（As proximal to photodiode is set）, can the sensitive ripple for sensing infrared light
Long scope is corresponding with the wavelength of the infrared light of the transmitting of the light emitting diode of proximity transducer, so as to accurately exclude ambient light
In on proximity transducer influence the best part, further reduce erroneous judgement possibility.The touch control terminal is to external environmental light
Detection can use pulsed detection by the way of, it is corresponding with the working frequency of proximity transducer, so as to effectively reduce examine
Power consumption caused by surveying ambient light, extend the usage time of touch control terminal.
The photoelectric conversion stable module 200 can use DC stabilization circuit, such as voltage-regulator diode, switching regulator IC
Existing mu balanced circuit.The boost module can use boost chip, amplifying circuit（Such as operational amplifier）Etc. existing boosting
Circuit.
It should be noted that after processor 700 receives above-said current signal, control proximity transducer, which does not work, to be referred to：Place
Reason device 700 enables proximity transducer reading really to reflect screening by carrying out a series of computing to the electric signal received
Block material close to or far away from situation, when there is ambient light, directly absorbed by light-sensitive device 100, avoid ambient light from being refracted to and connect
When on nearly sensor, proximity transducer is caused to export the problem of supersaturation leads to not normal work.Above-mentioned processor 700 is to electricity
The computing of signal, the reading for adjusting proximity transducer is prior art, therefore is repeated no more.
Specifically, as shown in figure 1, it is additionally provided with light between the photoelectric conversion stable module 200 and boost module 400
Electric translation filtering module 300, for filtering out the current spike signal of the output of photoelectric conversion stable module 200.Environment anaclasis
The voltage signal that is changed into by light-sensitive device 100 of light, it is relatively more electric signal clutter to be present in it, easily occurs unstable
The situation of current spike, before boost module 400 carries out boosting amplification to electric signal, by setting a photoelectric conversion to filter
300, before electric signal is amplified in boosting, the current spike of electric signal is filtered out in advance, makes the light current for being output to boost module 400
Press signal more stable, prevent that boost module 400 is impaired.
After the voltage signal is boosted by boost module 400, its signal is there is certain unstability, in order that rising
The electric signal that die block 400 exports can be stablized powers to processor 700, between boost module 400 and processor 700 also successively
Boosting Voltage stabilizing module 500 is provided with, as shown in figure 1, the boosting Voltage stabilizing module 500 can also use existing mu balanced circuit, is used
Voltage signal after stable boost, the offer power supply signal that can stablize.
Because boost module 400 is by after the weak voltage signal boosting of conversion, the power supply signal that can be produced and need is inconsistent
Ripple, the present invention using, boosting Voltage stabilizing module 500 and processor 700 between also setting up boosting filtration module 600, use
Voltage ripple signals in electric signal after filtering out boosting stabilization.Boost module 400 is by the weak voltage signal of conversion by rising
After the boosting processing of die block, some ripples inconsistent with the power supply signal of needs can be naturally produced, if being directly output to
In processor, bad influence can be caused.Set boosting filtration module 600 before voltage signal enters processor 700 by these
Inconsistent ripple filters out, to ensure the accuracy of power supply signal.By setting boosting Voltage stabilizing module 500 and boosting filtration module
600, the weak voltage signal after boosting processing can be made more stable and power supply signal is accurately provided.
Wherein, opto-electronic conversion filtration module 300 and boosting filtration module 600 can use filter capacitor, RC filter circuits,
The circuits such as LC filter circuits, by using the electronic component of different parameters, realize the filtering of different amplitudes.
Further, touch control terminal of the invention also includes：Infrared emission light Density Detection module 800 and photovoltaic conversion are red
Outer optical module 900, as depicted in figs. 1 and 2.
The infrared emission light Density Detection module 800 connects photodiode and the pole of infraluminescence two of proximity transducer
Pipe, the density of the reflection light received for sense photodiode, and judge whether the density of the reflection light is less than and connect
The density of the transmitting light of the infrarede emitting diode of nearly sensor.If detect the reflection light that photodiode receives
Density is relatively low, then illustrates that light-sensitive device 100 absorbs the light of a part of infrarede emitting diode transmitting.
The infrared optical module 900 of photovoltaic conversion and light-sensitive device 100, hair UV light-emitting diode and infrared emission optical density
Detection module 800 connects, for when the reflection light density be less than infrarede emitting diode transmitting light density when,
Photovoltaic conversion caused by light-sensitive device 100 is infrared light by the infrared optical module 900 of photovoltaic conversion, passes through infrarede emitting diode
Outwards transmitting, afterwards, the density of reflection light is detected by infrared emission light Density Detection module 800 again, until infrared emission
The infrared optical density and the density one of the infrarede emitting diode transmitting light of proximity transducer that optical density detection module 800 detects
Cause.
The outside transmitting infrared light of the infrarede emitting diode meeting pulsed of proximity transducer itself, the light-sensitive device
100 may absorb the infrared light that a part is externally launched, and be translated into voltage signal, infrared especially when what is outwards launched
When a light part is refracted or is reflected back in proximity transducer, the above situation is easier to occur, and thus, causes the electricity changed out
Signal and the ambient light signal of reality are not inconsistent, and cause proximity transducer erroneous judgement.For example, when the light of infrarede emitting diode transmitting
When line is reflexed on photodiode by extraneous shelter, proximity transducer should be judged as there is object proximity, perform corresponding behaviour
Make.But due to above-mentioned light-sensitive device by absorb reflection infrared signal be converted into electric signal, be output to processing after treatment
Device is powered, and the light for receiving photodiode is weaker so as to proximity transducer be made to work, and ultimately results in close to sensing
Device erroneous judgement.
Specifically, as shown in Fig. 2 the present invention touch control terminal when extraneous shelter be present, its workflow is as follows：It is red
The infrared light that UV light-emitting diode is sent is blocked after thing reflection, is received by light-sensitive device 100 and photodiode, and ambient light
This thing that is blocked reflects away, and now light-sensitive device 100 and photodiode do not receive ambient light.Infrared emission optical density
Detection module 800 detects that the density for the reflection light that photodiode receives is less than the transmitting light of infrarede emitting diode
During density, make photovoltaic conversion infrared optical module 900 that voltage signal caused by light-sensitive device 100 is changed into infrared light, pass through
Infrarede emitting diode re-emits away, continues to detect by infrared emission light Density Detection module 800, until reflection light
Voltage signal when penetrating the consistent in density of light, is no longer converted into infrared light by density with infrarede emitting diode hair.So as to
It ensure that electric signal that light-sensitive device 100 is changed out can accurately reflect the situation of actual environment light, enable photodiode
Enough infrared signals for correctly receiving reflection, eliminate it is above-mentioned in the presence of extraneous shelter when proximity transducer erroneous judgement can
Energy.
The present invention correspondingly provides a kind of method for preventing proximity transducer erroneous judgement, as shown in figure 3, described method bag
Include：
S100, the ambient light reflected by the touch-screen of light-sensitive device reception touch control terminal, convert optical signals to electric signal.
S200, the electric signal stablized by photoelectric conversion stable module.
S300, boost module carry out boosting processing to the electric signal that photoelectric conversion stable module exports, and export whole to touch-control
The processor at end, powered to the processor, avoid ambient light from being approached the photodiode of sensor and receive ambient light.
In the embodiment of the present invention, electric signal that ambient light is converted into by light-sensitive device, because the electric signal is unstable
It is fixed, it is therefore desirable to which that photoelectric conversion stable module stablizes the electric signal.Because its voltage is very faint after electric signal is stable, this reality
Apply example by boost module boosting processing make voltage rise to certain amplitude give processor power.
Because electric signal has current spike signal after photoelectric conversion stable module voltage stabilizing, in order to avoid current spike
Signal corruption boost module, between step S200 and step S300, described method also includes：Mould is filtered by opto-electronic conversion
Block filters out the current spike signal in the electric signal after stablizing.Referring specifically to above-described embodiment.
Further, in order that the voltage stabilization of boost module output, in step S300, described method also includes：
Voltage signal after being handled by boosting Voltage stabilizing module boost module boosting carries out voltage stabilizing processing.Referring specifically to above-mentioned implementation
Example.
Further, after the weak voltage signal boosting that boost module converts light-sensitive device, can produce and processor institute
The inconsistent ripple of power supply signal needed, in step S300, described method also includes：Boosting is filtered out by boosting filtration module
Voltage ripple signals after Voltage stabilizing module voltage stabilizing processing, so as to meet the power supply needs of processor.
Preferably, in order to improve the judgement precision of proximity transducer, methods described also includes after step S300：
When the infrared light of shelter reflection is received in the pole of infrared electro two of proximity transducer, sense photodiode connects
The density of the reflection light of receipts, and judge whether the density of the reflection light is less than the infrarede emitting diode of proximity transducer
Transmitting light density；When the density of reflection light is less than the density for launching light, voltage caused by light-sensitive device is turned
Turn to infrared light, outwards launched by infrarede emitting diode, until reflection light density and proximity transducer it is infrared
Light emitting diode transmitting light consistent in density, so as to avoid shelter close to when, light-sensitive device absorb infraluminescence two
Pole pipe is blocked the infrared light of thing transmitting, and caused photodiode can not normally receive the infrared signal of reflection, cause
The problem of proximity transducer is judged by accident.
In summary, provided by the present invention for preventing the touch control terminal and its method of proximity transducer erroneous judgement, utilize
External environment condition optical signal is converted to electric signal by light-sensitive device, will electric signal carry out voltage stabilizing boosting processing after be transferred to processor from
And the judgement to proximity transducer is adjusted, avoid proximity to sensor is influenceed by external ambient light, erroneous judgement and perform mistake
Malfunction, enrich the technology of sensor and the accuracy of lifting sensor.
It is understood that for those of ordinary skills, can be with technique according to the invention scheme and its hair
Bright design is subject to equivalent substitution or change, and all these changes or replacement should all belong to the guarantor of appended claims of the invention
Protect scope.
Claims (10)
- A kind of 1. touch control terminal for being used to prevent proximity transducer erroneous judgement, it is characterised in that including：Light-sensitive device, the ambient light that the touch-screen for receiving touch control terminal reflects, and convert optical signals to electric signal；Photoelectric conversion stable module, for stablizing the electric signal；Boost module, the electric signal for being exported to photoelectric conversion stable module carry out boosting processing, exported to touch control terminal Processor, powered to the processor, the processor is by carrying out computing to the electric signal received and judging close to sensing Whether there is ambient light on device, control proximity transducer not work when processor is judged as having ambient light, avoid ambient light from being connect The photodiode of nearly sensor receives；The light-sensitive device, photoelectric conversion stable module, boost module and processor are sequentially connected.
- 2. the touch control terminal according to claim 1 for being used to prevent proximity transducer erroneous judgement, it is characterised in that described Opto-electronic conversion filtration module is additionally provided between photoelectric conversion stable module and boost module, for filtering out photoelectric conversion stable mode The current spike signal of block output.
- 3. the touch control terminal according to claim 1 or 2 for being used to prevent proximity transducer erroneous judgement, it is characterised in that Boosting Voltage stabilizing module is additionally provided between boost module and processor, for the voltage signal after stable boost.
- 4. the touch control terminal according to claim 3 for being used to prevent proximity transducer erroneous judgement, it is characterised in that boosting Boosting filtration module is additionally provided between Voltage stabilizing module and processor, for filtering out the boosting after boosting Voltage stabilizing module is stable Voltage ripple signals in voltage signal, and export to processor.
- 5. the touch control terminal according to claim 1 for being used to prevent proximity transducer erroneous judgement, it is characterised in that also wrap Include：Infrared emission light Density Detection module, for detect proximity transducer photodiode receive reflection light it is close Degree, and judge whether the density of the reflection light is less than the close of the transmitting light of the infrarede emitting diode of proximity transducer Degree；The infrared optical module of photovoltaic conversion, for when the density of reflection light is less than the density for launching light, light-sensitive device to be produced Raw photovoltaic conversion is infrared light, is outwards launched by infrarede emitting diode.
- A kind of 6. method for preventing proximity transducer erroneous judgement, it is characterised in that including：Step A, the ambient light of the touch-screen refraction of touch control terminal is received by light-sensitive device, converts optical signals to electric signal；Step B, the electric signal is stablized by photoelectric conversion stable module；Step C, boost module carries out boosting processing to the electric signal that photoelectric conversion stable module exports, and exports to touch control terminal Processor, powered to the processor, the processor is by carrying out computing to the electric signal received and judging close to sensing Whether there is ambient light on device, control proximity transducer not work when processor is judged as having ambient light, avoid ambient light from being connect The photodiode of nearly sensor receives ambient light.
- 7. the method according to claim 6 for preventing proximity transducer erroneous judgement, it is characterised in that the step B and step Between rapid C, described method also includes：B1, by opto-electronic conversion filtration module filter out it is stable after electric signal in current spike signal.
- 8. the method for preventing proximity transducer erroneous judgement according to claim 6 or 7, it is characterised in that the step C is also Including：Voltage signal after being handled by boosting Voltage stabilizing module boost module boosting carries out voltage stabilizing processing.
- 9. the method according to claim 8 for preventing proximity transducer erroneous judgement, it is characterised in that the step C is also wrapped Include：The voltage ripple signals in the booster voltage signal after the voltage stabilizing processing of boosting Voltage stabilizing module are filtered out by boosting filtration module, and Export to processor.
- 10. the method according to claim 6 for preventing proximity transducer erroneous judgement, it is characterised in that described method is also Including：D, when the infrared photodiode of proximity transducer receives the infrared light of shelter reflection, sense photodiode connects The density of the reflection light of receipts, and judge whether the density of the reflection light is less than the infrarede emitting diode of proximity transducer Transmitting light density；E, it is infrared light by photovoltaic conversion caused by light-sensitive device when the density of reflection light is less than the density for launching light Line, outwards launched by infrarede emitting diode.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410423656.4A CN104182097B (en) | 2014-08-26 | 2014-08-26 | For preventing the touch control terminal and its method of proximity transducer erroneous judgement |
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| CN201410423656.4A CN104182097B (en) | 2014-08-26 | 2014-08-26 | For preventing the touch control terminal and its method of proximity transducer erroneous judgement |
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| CN104182097B true CN104182097B (en) | 2017-11-10 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105224147A (en) * | 2015-10-13 | 2016-01-06 | Tcl移动通信科技（宁波）有限公司 | A kind of mobile terminal proximity transducer that prevents is by the method and system of ambient light interference |
| CN106022020B (en) * | 2016-05-17 | 2020-03-06 | Tcl移动通信科技（宁波）有限公司 | Optical detection touch screen unlocking device and method of mobile terminal |
| CN108388418B (en) * | 2018-03-06 | 2021-03-16 | 深圳市无限动力发展有限公司 | Audio adjusting method and device and sound equipment |
| TWI722710B (en) * | 2019-12-11 | 2021-03-21 | 茂達電子股份有限公司 | Proximity sensor with a sliced integration time sensing mechanism and a sensing method thereof |
| CN115014408B (en) * | 2021-09-17 | 2023-08-01 | 荣耀终端有限公司 | Electronic equipment |
| CN115236889B (en) * | 2022-07-25 | 2023-10-13 | 京东方科技集团股份有限公司 | Photosensitive circuit, control method thereof and display panel |
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| CN102322875A (en) * | 2011-08-01 | 2012-01-18 | 西安电子科技大学 | Visible light sensor |
| WO2011150887A3 (en) * | 2011-06-24 | 2012-05-24 | 华为终端有限公司 | Method and device for adjusting detecting threshold of infrared proximity sensor |
| TW201312400A (en) * | 2011-09-02 | 2013-03-16 | Fu-Lin Ye | Touch control device combining with green energy |
| CN103066087A (en) * | 2012-12-20 | 2013-04-24 | 格科微电子（上海）有限公司 | Imaging sensor module and handheld electronic device |
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| US8222591B2 (en) * | 2009-07-07 | 2012-07-17 | Intersil Americas Inc. | Proximity sensors with improved ambient light rejection |
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| WO2011150887A3 (en) * | 2011-06-24 | 2012-05-24 | 华为终端有限公司 | Method and device for adjusting detecting threshold of infrared proximity sensor |
| CN102322875A (en) * | 2011-08-01 | 2012-01-18 | 西安电子科技大学 | Visible light sensor |
| TW201312400A (en) * | 2011-09-02 | 2013-03-16 | Fu-Lin Ye | Touch control device combining with green energy |
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