CN105224147A - A kind of mobile terminal proximity transducer that prevents is by the method and system of ambient light interference - Google Patents
A kind of mobile terminal proximity transducer that prevents is by the method and system of ambient light interference Download PDFInfo
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- CN105224147A CN105224147A CN201510655911.2A CN201510655911A CN105224147A CN 105224147 A CN105224147 A CN 105224147A CN 201510655911 A CN201510655911 A CN 201510655911A CN 105224147 A CN105224147 A CN 105224147A
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Abstract
The invention discloses a kind of mobile terminal proximity transducer that prevents by the method and system of ambient light interference, when infra-red ray transmitting unit launches infrared ray, proximity transducer sends driving request information to central processing unit, and request drives infrared ray modular converter to start working; Surround lighting middle infrared (Mid-IR) is converted into low level signal by infrared ray modular converter, and exports its low level signal to central processing unit; Described low level signal is converted into pre-drive signal by central processing unit, drives central processing unit to be in preliminary work state.It is by setting up infrared ray modular converter, light identical with the Infrared wavelength that proximity transducer is launched in surround lighting being converted to low level signal for central processing unit provides pre-drive signal, avoid the light identical with Infrared wavelength in infrared ray in surround lighting and surround lighting to superpose with the infrared wave that the infrared ray that the proximity transducer of mobile terminal is launched produces in same frequency situation, the proximity transducer work of interfering mobile terminal.
Description
Technical field
The present invention relates to technical field of mobile terminals, particularly a kind of mobile terminal proximity transducer that prevents is by the method and system of ambient light interference.
Background technology
The proximity transducer of mobile terminal comprises infra-red ray transmitting unit and infrared detection unit two large divisions, proximity transducer operationally launches short infrared by infra-red ray transmitting unit, by the time of infrared reflection described in infrared detection unit inspection detect whether exist shelter near or away from situation.But when reality uses, owing to there is the light identical with Infrared wavelength in the infrared ray in surround lighting and surround lighting in proximity transducer job insecurity under strong surround lighting of mobile terminal.
When the proximity transducer of mobile terminal is started working, launch infrared ray, in infrared ray then in surround lighting and surround lighting, the light identical with Infrared wavelength superposes with the infrared wave that the infrared ray that the proximity transducer of mobile terminal is launched produces in same frequency situation, the proximity transducer work of interfering mobile terminal, makes the proximity transducer job insecurity of mobile terminal.
User is when making a phone call, and proximity transducer is subject to the interference of surround lighting, the time that the touch-screen postponing mobile terminal extinguishes, and even makes the touch-screen of mobile terminal not extinguish, and affects user and uses.
Thus prior art need to improve.
Summary of the invention
The technical problem to be solved in the present invention is, for the deficiencies in the prior art, there is provided a kind of mobile terminal proximity transducer that prevents by the method and system of ambient light interference, it can solve the interference that existing mobile terminal proximity transducer is subject to surround lighting, the time that the touch-screen postponing mobile terminal extinguishes, even make the problem that the touch-screen of intelligent mobile terminal or flat board can not extinguish.
In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is as follows:
One prevents mobile terminal proximity transducer by ambient light interference system, and it comprises:
Proximity transducer, for sending the request signal driving infrared ray modular converter to start working;
Infrared ray modular converter, irradiates light identical with the Infrared wavelength that proximity transducer is launched in the surround lighting of touch-screen for receiving, and light signal is converted to electric signal;
Central processing unit, starts working for driving infrared ray modular converter and is the predrive information of proximity transducer by the transform electrical signals that infrared ray modular converter exports;
Described central processing unit is connected with proximity transducer and infrared ray modular converter.
The described mobile terminal proximity transducer that prevents is by ambient light interference system, wherein, in described surround lighting, the light identical with the Infrared wavelength that proximity transducer is launched comprises: the infrared ray in surround lighting and identical other light of the Infrared wavelength of launching with proximity transducer.
The described mobile terminal proximity transducer that prevents is by ambient light interference system, and wherein, described infrared ray modular converter comprises:
Infrared pulse conversion unit, for by receive irradiate touch-screen surround lighting in the light identical with the Infrared wavelength that proximity transducer is launched be converted into pulse signal;
Photoelectric conversion unit, for being converted to photoelectric signal by described pulse signal;
Voltage regulation unit, carries out voltage stabilizing process for the electric signal exported photoelectric conversion unit.
The described mobile terminal proximity transducer that prevents is by ambient light interference system, and wherein, described infrared ray modular converter also comprises:
Level conversion unit, is converted into low level signal for the high level signal exported by voltage regulation unit, exports central processing unit to.
The described mobile terminal proximity transducer that prevents is by ambient light interference method, wherein, described central processing unit is also pre-stored within operational order corresponding to low level signal that infrared ray modular converter described in low level information command storehouse in internal instruction register exports for searching, and according to described operational order, described low level signal is converted into the pre-drive signal of proximity transducer.
Prevent mobile terminal proximity transducer by a method for ambient light interference, it comprises:
A, when infra-red ray transmitting unit launches infrared ray, proximity transducer sends driving request information to central processing unit, and request drives infrared ray modular converter to start working;
Light identical with the Infrared wavelength that proximity transducer is launched in surround lighting is converted into low level signal by B, infrared ray modular converter, and exports its electric signal to central processing unit;
Described transform electrical signals is the pre-drive signal of proximity transducer by C, central processing unit.
The described mobile terminal proximity transducer that prevents is by ambient light interference method, wherein, in described surround lighting, the light identical with the Infrared wavelength that proximity transducer is launched comprises: the infrared ray in surround lighting and identical other light of the Infrared wavelength of launching with proximity transducer.
The described mobile terminal proximity transducer that prevents is by ambient light interference method, and wherein, described step B specifically comprises:
B1, infrared ray modular converter are started working under the driving of central processing unit, and light identical with the Infrared wavelength that proximity transducer is launched in surround lighting is converted to pulse signal by described infrared pulse conversion unit;
B2, described pulse signal are photoelectric signal by photoelectric conversion cell translation;
B3, described photoelectric signal stabilize to high level signal by voltage regulation unit.
The described mobile terminal proximity transducer that prevents is by ambient light interference method, and wherein, described step B also comprises:
B4, described high level signal are converted to low level signal by level conversion unit.
The described mobile terminal proximity transducer that prevents is by ambient light interference method, wherein, described step C is specially: described central processing unit is searched and is pre-stored within operational order corresponding to low level signal that infrared ray modular converter described in low level information command storehouse in internal instruction register exports, according to described operational order, described low level signal is converted into the pre-drive signal of proximity transducer.
Beneficial effect: compared with prior art, a kind of mobile terminal proximity transducer that prevents provided by the present invention is by the method and system of ambient light interference, when infra-red ray transmitting unit launches infrared ray, proximity transducer sends driving request information to central processing unit, and request drives infrared ray modular converter to start working; Surround lighting middle infrared (Mid-IR) is converted into low level signal by infrared ray modular converter, and exports its low level signal to central processing unit; Described low level signal is converted into pre-drive signal by central processing unit, drives central processing unit to be in preliminary work state.It is by setting up infrared ray modular converter, light identical with the Infrared wavelength that proximity transducer is launched in surround lighting being converted to low level signal for central processing unit provides pre-drive signal, avoid the light identical with Infrared wavelength in infrared ray in surround lighting and surround lighting to superpose with the infrared wave that the infrared ray that the proximity transducer of mobile terminal is launched produces in same frequency situation, the proximity transducer work of interfering mobile terminal.Fundamentally solve the interference that existing mobile terminal proximity transducer is subject to surround lighting, the time that the touch-screen postponing mobile terminal goes out, even make the problem that the touch-screen of intelligent mobile terminal or flat board can not go out.
Accompanying drawing explanation
Fig. 1 is that the present invention prevents mobile terminal proximity transducer by the structure principle chart of ambient light interference system.
Fig. 2 is the process chart that the invention provides infrared ray modular converter.
Fig. 3 is the workflow diagram of the low voltage signal that central processing unit process infrared ray modular converter of the present invention exports.
Fig. 4 is the workflow diagram of the low level signal that central processing unit process proximity transducer of the present invention exports.
Fig. 5 is the process flow diagram that proximity transducer driving infrared ray modular converter is started working.
Fig. 6 is that the present invention prevents mobile terminal proximity transducer by the process flow diagram of ambient light interference method preferred embodiment.
Embodiment
The invention provides the method and system preventing mobile terminal proximity transducer by ambient light interference, for making object of the present invention, technical scheme and effect clearly, clearly, developing simultaneously referring to accompanying drawing, the present invention is described in more detail for embodiment.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Below in conjunction with accompanying drawing, by the description to embodiment, summary of the invention is described further.
Refer to Fig. 1, Fig. 1 is the structure principle chart that the invention provides the system preventing mobile terminal proximity transducer by ambient light interference.Described system comprises: central processing unit 300, proximity transducer 100 and infrared ray modular converter 200; Described central processing unit 300 is connected with proximity transducer 100 and infrared ray modular converter 200 respectively.
Wherein, described proximity transducer 100 is for sending the request signal driving infrared ray modular converter to start working; Infrared ray modular converter 200 irradiates light identical with the Infrared wavelength that proximity transducer is launched in the surround lighting of touch-screen for receiving, and light signal is converted to electric signal; Central processing unit 300 is for driving infrared ray modular converter to start working and being the predrive information of proximity transducer by the transform electrical signals that infrared ray modular converter exports.The infrared wave that the infrared ray avoiding light identical with Infrared wavelength in the infrared ray in surround lighting and surround lighting and the proximity transducer 100 of mobile terminal to launch produces in same frequency situation superposes, the proximity transducer 100 of interfering mobile terminal works, thus solve the interference that mobile terminal proximity transducer 100 is subject to surround lighting, the time that the touch-screen postponing mobile terminal goes out, even make the problem that the touch-screen of mobile terminal can not go out.
Further, described proximity transducer 100 can comprise: infra-red ray transmitting unit and infrared detection unit, shown in infra-red ray transmitting unit for launching infrared ray, described infrared detection unit is launched infrared ray to be refracted to infrared ray on touch-screen by object for being detected infra-red ray transmitting unit.
Further, described infrared ray modular converter 200 comprises: infrared pulse conversion unit 201 and photoelectric conversion unit 202, infrared pulse conversion unit 201 is connected with photoelectric conversion unit 202.Described infrared pulse conversion unit 201 is for being converted into pulse signal by light identical with the Infrared wavelength that proximity transducer is launched in the surround lighting received, and described photoelectric conversion unit 202 is for being converted into photoelectric signal by described pulse signal.
The photoelectric signal that photoelectric conversion unit 202 transforms, its electric signal is by photoelectric conversion module converts pulse signal, and its telecommunications is unstable, needs to be provided with a voltage regulation unit to stablize how many electric signal, could effectively utilize for subsequent cell.Thus, described infrared ray modular converter also comprises voltage regulation unit, carries out voltage stabilizing process for stable to the electric signal that photoelectric conversion unit exports.Voltage regulation unit can adopt PNP triode 203 etc., and the photoelectric signal that photoelectric conversion unit transforms outputs to PNP triode 203, PNP triode 203 conducting, and the pull down resistor on PNP triode 203 collector exports high level signal.But the high level signal that PNP triode 203 inputs may produce interference to the work of the proximity transducer of mobile terminal.Thus, the high level signal exported in order to avoid PNP triode 203 produces interference to proximity transducer, infrared ray modular converter can also arrange level conversion unit 204, the high level signal that PNP triode 203 exports is converted to low level signal by it, and exports this low level signal to central processing unit.
Further, described infrared ray modular converter 200 can be arranged on the periphery (as near proximity transducer) of proximity transducer 100, light identical with the wavelength of the outside line of proximity transducer transmitting in the red surround lighting of the sensitive induction of energy, thus to get rid of in surround lighting close to the ultrared impact of sensor emission accurately, reduce the possibility of erroneous judgement further.The mode that the detection of described infrared ray modular converter surround lighting to external world can adopt pulsed to detect, corresponding with the frequency of operation of proximity transducer, thus effectively reduce the power consumption that ambient light brings, extend the service time of mobile terminal.
Described on end, the course of work of described infrared ray modular converter 200 is as Fig. 2 institute, after the infra-red ray transmitting unit of proximity transducer launches infrared ray, light identical with the Infrared wavelength that proximity transducer is launched in surround lighting is converted into pulse signal by infrared pulse conversion unit 201, described pulse signal is converted into photovoltage information by photoelectric conversion unit 202, described photoelectric signal exports PNP triode 203 to, PNP triode 203 conducting, the pull down resistor on PNP triode 203 collector exports high level signal; Described high level signal, by level conversion unit 204, is converted into low level signal.
In the present embodiment, described central processing unit 300 comprises internal instruction register 301 and the PMOS 302 of the low-voltage information respective operations instruction for storing infrared ray modular converter and proximity transducer output.The low level signal that central processing unit 300 pairs of level conversion units 204 export processes, using the pre-drive signal of this low level signal as proximity transducer 100.In actual applications, after central processing unit 300 detects the low level signal that level conversion unit 204 exports, central processing unit 300 calls operational order corresponding to this low level signal from its internal instruction register 301, controls its inner PMOS 302 and enters conducting state.
Particularly, as shown in Figure 3, the process of the low voltage signal that central processing unit process infrared ray modular converter exports can be: infrared ray modular converter 200 output LOW voltage letter is to central processing unit 300, central processing unit 300 calls its internal instruction register 301, search the operational order that described low level signal is corresponding, the PMOS 302 controlled in central processing unit 300 enters conducting state.But central processing unit 300 does not send I2C clock signal to proximity transducer 100, do not control proximity transducer 100 and work.
As shown in Figure 4, the process that central processing unit 300 processes the low level signal that proximity transducer 100 exports can be: central processing unit 300 calls its internal instruction register 301, search the operational order that described low level signal is corresponding, the PMOS 302 controlled in central processing unit 300 enters conducting state, and send I2C clock signal to proximity transducer 100, communicate with proximity transducer 100, control proximity transducer 100 and work, then LCD backlight display module 400 extinguishes.
Noticeable, when the infra-red ray transmitting unit in proximity transducer 100 is launched after infrared line, infrared ray modular converter 200 is started working and is referred to (as shown in Figure 5): after the infra-red ray transmitting unit transmitting infrared line of proximity transducer 100, send driving request signal to central processing unit 300, request drives the work of infrared ray modular converter; Central processing unit receives this driving request signal, calls this driving request signal instruction from its internal instruction register 301, and output drive signal, to infrared ray modular converter 200, drives infrared ray modular converter 200 to work.Or refer to: the infra-red ray transmitting unit of proximity transducer 100 launches infrared line, after infrared ray detecting unit detects the infrared ray that infra-red ray transmitting unit is launched, proximity transducer 100 sends driving request signal to central processing unit 300, and request drives infrared ray modular converter 200 to work; Central processing unit 100 receives this driving request signal, calls this driving request signal instruction from its internal instruction register 301, and output drive signal, to infrared ray modular converter 200, drives infrared ray modular converter 200 to work.Here, only have when proximity transducer 100 is in running order, infrared ray modular converter 200 is started working.If proximity transducer 100 is in wait work special topic, infrared ray modular converter 200 quits work.
The invention provides and prevent mobile terminal proximity transducer by ambient light interference system, as shown in Figure 2-5, it comprises proximity transducer, infrared ray modular converter and central processing unit, the infra-red ray transmitting unit of proximity transducer launches infrared ray, after the infra-red ray transmitting unit transmitting infrared line of proximity transducer 100, send driving request signal to central processing unit 300, request drives the work of infrared ray modular converter; Central processing unit receives this driving request signal, calls this driving request signal instruction from its internal instruction register 301, and output drive signal, to infrared ray modular converter 200, drives infrared ray modular converter 200 to work.Light identical with the Infrared wavelength that proximity transducer is launched in surround lighting is converted into pulse signal by infrared pulse conversion unit 201, described pulse signal is converted into photovoltage information by photoelectric conversion unit 202, described photoelectric signal exports PNP triode 203 to, PNP triode 203 conducting, the pull down resistor on PNP triode 203 collector exports high level signal; Described high level signal, by level conversion unit 204, is converted into low level signal.Infrared ray modular converter 200 output LOW voltage letter is to central processing unit 300, and central processing unit 300 calls its internal instruction register 301, searches the operational order that described low level signal is corresponding, and the PMOS 302 controlled in central processing unit 300 enters conducting state.Thus, when the infrared detection unit of proximity transducer receives the infrared ray of infra-red ray transmitting unit transmitting, described infrared ray is converted into low level signal, the process that central processing unit 300 processes the low level signal that proximity transducer 100 exports can be: central processing unit 300 calls its internal instruction register 301, search the operational order that described low level signal is corresponding, the PMOS 302 controlled in central processing unit 300 enters conducting state, and send I2C clock signal to proximity transducer 100, communicate with proximity transducer 100, control proximity transducer 100 to work, then LCD backlight display module 400 extinguishes, the infrared wave that the infrared ray avoiding light identical with Infrared wavelength in the infrared ray in surround lighting and surround lighting and the proximity transducer 100 of mobile terminal to launch produces in same frequency situation superposes, the proximity transducer 100 of interfering mobile terminal works, thus solve the interference that mobile terminal proximity transducer 100 is subject to surround lighting, the time that the touch-screen postponing mobile terminal goes out, even make the problem that the touch-screen of mobile terminal can not go out.
In one embodiment, described infrared ray modular converter can also comprise: infrared emission light Density Detection module and photovoltaic conversion infrared module; The infra-red ray transmitting unit of described infrared emission light Density Detection model calling proximity transducer and infrared detection unit, for detecting the density of the reflection ray that infrared detection unit receives, and judge whether the density of described reflection ray is less than the density of the emission of light of the infra-red ray transmitting unit of proximity transducer.If detect that the density of the reflection ray that infrared detection unit receives is on the low side, then illustrate that infrared ray modular converter absorbs the light of a part of infra-red ray transmitting unit transmitting.
Described photovoltaic conversion infrared module and infrared ray modular converter, infra-red ray transmitting unit and infrared emission light Density Detection model calling, for when the density of described reflection ray is less than the density of the emission of light of infra-red ray transmitting unit, the photovoltaic conversion that infrared ray modular converter produces is infrared ray by photovoltaic conversion infrared module, outwards launched by infra-red ray transmitting unit, afterwards, by the density of infrared emission light Density Detection module detection of reflected light again, until the consistent in density of the infrared ray density of infrared emission light Density Detection module detection and the infra-red ray transmitting unit emission of light of proximity transducer.
The outside transmitting infrared ray of the infra-red ray transmitting unit meeting pulsed of proximity transducer self, described infrared ray modular converter may absorb the infrared ray that a part is externally launched, and be translated into voltage signal, especially when an infrared ray part of outwards launching is refracted or is reflected back in proximity transducer, above-mentioned situation more easily occurs, thus, cause the electric signal changed out not to be inconsistent with actual ambient light signal, cause proximity transducer erroneous judgement.Such as, when the light that infra-red ray transmitting unit is launched is reflexed on infrared detection unit by extraneous shelter, proximity transducer should be judged as object proximity, performs corresponding operating.But the infrared signal absorbing reflection due to above-mentioned infrared ray modular converter is converted into electric signal, output to processor after treatment to power, the light that infrared detection unit is received is more weak cannot trigger proximity transducer work, finally causes proximity transducer erroneous judgement.
Present invention also offers one prevents mobile terminal proximity transducer by ambient light interference method, and please refer to Fig. 6, described method comprises:
S1, when infra-red ray transmitting unit launches infrared ray, proximity transducer sends driving request information to central processing unit, and request driving infrared ray modular converter is started working;
Light identical with the Infrared wavelength that proximity transducer is launched in surround lighting is converted into low level signal, and exports electric signal to central processing unit by S2, infrared ray modular converter;
Described transform electrical signals is the pre-drive signal of proximity transducer by S3, central processing unit.
The described mobile terminal proximity transducer that prevents is by ambient light interference method, wherein, in described surround lighting, the light identical with the Infrared wavelength that proximity transducer is launched comprises: the infrared ray in surround lighting and identical other light of the Infrared wavelength of launching with proximity transducer.
Particularly, described step S2 specifically comprises:
S21, infrared ray modular converter are started working under the driving of central processing unit, and described surround lighting is converted to pulse signal by infrared pulse conversion unit;
S22, described pulse signal are photoelectric signal by photoelectric conversion cell translation;
S23, described photoelectric signal stabilize to high level signal by voltage regulation unit.
Further, described step S2 also comprises:
S24, described high level signal are converted to low level signal by level conversion unit.
Preferably, in order to improve accuracy and the promptness of proximity transducer further, described step S3 is specially: described central processing unit is searched and is pre-stored within operational order corresponding to low level signal that infrared ray modular converter described in low level information command storehouse in internal instruction register exports, according to described operational order, described low level signal is converted into the pre-drive signal of central authorities' process, makes described central processing unit be in preliminary work state.
The above-mentioned mobile terminal proximity transducer that prevents all is described in detail by each step of ambient light interference method in said system, has just repeated no more here.
A kind of mobile terminal proximity transducer that prevents provided by the present invention is by the method and system of ambient light interference, it is by setting up infrared ray modular converter, by light patent identical with the Infrared wavelength that proximity transducer is launched in surround lighting for low level signal for central processing unit provides pre-drive signal, avoid the light identical with Infrared wavelength in infrared ray in surround lighting and surround lighting to superpose with the infrared wave that the infrared ray that the proximity transducer of mobile terminal is launched produces in same frequency situation, the proximity transducer work of interfering mobile terminal.Fundamentally solve the interference that existing mobile terminal proximity transducer is subject to surround lighting, the time that the touch-screen postponing mobile terminal goes out, even make the problem that the touch-screen of intelligent mobile terminal or flat board can not go out.
Be understandable that, for those of ordinary skills, can be equal to according to technical scheme of the present invention and inventive concept thereof and replace or change, and all these change or replace the protection domain that all should belong to the claim appended by the present invention.
Claims (10)
1. prevent mobile terminal proximity transducer by an ambient light interference system, it is characterized in that, it comprises:
Proximity transducer, for sending the request signal driving infrared ray modular converter to start working;
Infrared ray modular converter, irradiates light identical with the Infrared wavelength that proximity transducer is launched in the surround lighting of touch-screen for receiving, and light signal is converted to electric signal;
Central processing unit, starts working for driving infrared ray modular converter and is the predrive information of proximity transducer by the transform electrical signals that infrared ray modular converter exports;
Described central processing unit is connected with proximity transducer and infrared ray modular converter.
2. the mobile terminal proximity transducer that prevents according to claim 1 is by ambient light interference system, it is characterized in that, light identical with the Infrared wavelength that proximity transducer is launched in described surround lighting comprises: the infrared ray in surround lighting and identical other light of the Infrared wavelength of launching with proximity transducer.
3. the mobile terminal proximity transducer that prevents according to claim 1 is by ambient light interference system, and it is characterized in that, described infrared ray modular converter comprises:
Infrared pulse conversion unit, for by receive irradiate touch-screen surround lighting in the light identical with the Infrared wavelength that proximity transducer is launched be converted into pulse signal;
Photoelectric conversion unit, for being converted to photoelectric signal by described pulse signal;
Voltage regulation unit, carries out voltage stabilizing process for the electric signal exported photoelectric conversion unit.
4. the mobile terminal proximity transducer that prevents according to claim 3 is by ambient light interference system, and it is characterized in that, described infrared ray modular converter also comprises:
Level conversion unit, is converted into low level signal for the high level signal exported by voltage regulation unit, exports to central processing unit.
5. the mobile terminal proximity transducer that prevents according to claim 1 is by ambient light interference system, it is characterized in that, described central processing unit is also pre-stored within operational order corresponding to low level signal that infrared ray modular converter described in low level information command storehouse in internal instruction register exports for searching, and according to described operational order, described low level signal is converted into the pre-drive signal of proximity transducer.
6. prevent mobile terminal proximity transducer by a method for ambient light interference, it is characterized in that, it comprises:
A, when infra-red ray transmitting unit launches infrared ray, proximity transducer sends driving request information to central processing unit, and request drives infrared ray modular converter to start working;
Light identical with the Infrared wavelength that proximity transducer is launched in surround lighting is converted into electric signal by B, infrared ray modular converter, and exports its electric signal to central processing unit;
Described transform electrical signals is the pre-drive signal of proximity transducer by C, central processing unit.
7. the mobile terminal proximity transducer that prevents according to claim 6 is by ambient light interference method, it is characterized in that, light identical with the Infrared wavelength that proximity transducer is launched in described surround lighting comprises: the infrared ray in surround lighting and identical other light of the Infrared wavelength of launching with proximity transducer.
8. the mobile terminal proximity transducer that prevents according to claim 6 is by ambient light interference method, and it is characterized in that, described step B specifically comprises:
B1, infrared ray modular converter are started working under the driving of central processing unit, and light identical with the Infrared wavelength that proximity transducer is launched in surround lighting is converted to pulse signal by described infrared pulse conversion unit;
B2, described pulse signal are photoelectric signal by photoelectric conversion cell translation;
B3, described photoelectric signal stabilize to high level signal by voltage regulation unit.
9. the mobile terminal proximity transducer that prevents according to claim 8 is by ambient light interference method, and it is characterized in that, described step B also comprises:
B4, described high level signal are converted into low level signal by level conversion unit.
10. the mobile terminal proximity transducer that prevents according to claim 6 is by ambient light interference method, it is characterized in that, described step C is specially: described central processing unit is searched and is pre-stored within operational order corresponding to low level signal that infrared ray modular converter described in low level information command storehouse in internal instruction register exports, according to described operational order, described low level signal is converted into the pre-drive signal of proximity transducer.
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| WO2019080907A1 (en) * | 2017-10-27 | 2019-05-02 | Oppo广东移动通信有限公司 | Control method for mobile terminal, device, mobile terminal, and storage medium |
| CN114026395A (en) * | 2019-07-17 | 2022-02-08 | ams国际有限公司 | Hold operation of light to frequency sensor |
| CN114026395B (en) * | 2019-07-17 | 2024-07-19 | ams国际有限公司 | Hold operation of light to frequency sensor |
| CN117492690A (en) * | 2023-12-29 | 2024-02-02 | 世纳微电子科技(成都)有限公司 | Proximity sensing signal processing method and device and proximity sensor |
| CN117492690B (en) * | 2023-12-29 | 2024-03-08 | 世纳微电子科技(成都)有限公司 | Proximity sensing signal processing method and device and proximity sensor |
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