CN108614651A - A kind of mobile terminal and infrared detection method - Google Patents
A kind of mobile terminal and infrared detection method Download PDFInfo
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- CN108614651A CN108614651A CN201810353399.XA CN201810353399A CN108614651A CN 108614651 A CN108614651 A CN 108614651A CN 201810353399 A CN201810353399 A CN 201810353399A CN 108614651 A CN108614651 A CN 108614651A
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- infrared
- display screen
- mobile terminal
- receiving tube
- pulse signal
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
- G06F3/0421—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means by interrupting or reflecting a light beam, e.g. optical touch-screen
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
- G01S17/06—Systems determining position data of a target
- G01S17/08—Systems determining position data of a target for measuring distance only
- G01S17/10—Systems determining position data of a target for measuring distance only using transmission of interrupted, pulse-modulated waves
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- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Electromagnetism (AREA)
- Human Computer Interaction (AREA)
- Computer Networks & Wireless Communication (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Optical Communication System (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
A kind of mobile terminal of present invention offer and infrared detection method, the mobile terminal includes display screen, infrared transmitting tube and infrared receiving tube, the infrared transmitting tube is set to one end of the display screen, the infrared receiving tube is set to the other end of the display screen, the first infrared light that the infrared transmitting tube is sent out is transmitted to by the display screen except the mobile terminal, the infrared receiving tube receives the second infrared light by the display screen, and second infrared light is infrared light of first infrared light after the object reflection except the mobile terminal.An infrared emission hole need not be separately provided in mobile terminal in the embodiment of the present invention on the display screen of mobile terminal, you can realize infrared detection function, and also improve the utilization rate of display screen.
Description
Technical field
The present invention relates to field of communication technology more particularly to a kind of mobile terminals and infrared detection method.
Background technology
With the rapid development of mobile terminal, mobile terminal has become essential a kind of tool in people's life,
And the various aspects for user's life are brought great convenience.Such as：It is generally all provided on the display screen of mobile terminal
Infrared sensor, when detecting mobile terminal close to human body, the display screen of mobile terminal extinguishes, mobile whole so as to prevent
End is by false triggering.But in the prior art, an infrared emission hole is usually separately provided on the display screen of mobile terminal, to
Realize infrared detection function, but infrared emission hole, which is arranged, will make the utilization rate of display screen relatively low, while increasing display
The manufacture difficulty of screen, therefore the side for realizing infrared detection in infrared emission hole need not be separately provided on a display screen it is urgent to provide a kind of
Case.
Invention content
A kind of mobile terminal of offer of the embodiment of the present invention and infrared detection method, to solve to need showing in the prior art
The problem of infrared emission hole could realize infrared detection is separately provided on screen.
In order to solve the above-mentioned technical problem, the invention is realized in this way：
In a first aspect, the embodiment of the present invention provides a kind of mobile terminal, the mobile terminal includes display screen, infrared emission
Pipe and infrared receiving tube, the infrared transmitting tube are set to one end of the display screen, and the infrared receiving tube is set to the display
The other end of screen, the first infrared light that the infrared transmitting tube is sent out by the display screen be transmitted to the mobile terminal it
Outside, the infrared receiving tube receives the second infrared light by the display screen, and second infrared light is first infrared light
Infrared light after the object reflection except the mobile terminal.
Second aspect, the embodiment of the present invention also provide a kind of infrared detection method, are applied to mobile terminal, described mobile whole
End includes display screen, infrared transmitting tube and infrared receiving tube, and the infrared transmitting tube is set to one end of the display screen, described red
Outer reception pipe is set to the other end of the display screen；
The method includes：
Detect the infrared emission signal of the infrared transmitting tube transmitting；
Detect the received IR signal that the infrared receiving tube is received by the display screen；
Determine that foreign object is in closer or far from state according to the infrared emission signal and the received IR signal.
The third aspect, the embodiment of the present invention also provide another infrared detection method, are applied to mobile terminal, the movement
Terminal includes display screen, infrared transmitting tube and infrared receiving tube, and the infrared transmitting tube is set to one end of the display screen, described
Infrared receiving tube is set to the other end of the display screen；The mobile terminal further include bottom make an uproar filtering circuit, pulse signal processing
Circuit and controller, bottom filtering circuit of making an uproar are connect with the infrared receiving tube, the pulse signal processing circuit with it is described
Infrared receiving tube connects；
The method includes：
By controller control at least part display screen between the first dispaly state and the second dispaly state
Switching, so that first infrared light forms pulsed infrared light；Wherein, it is described when the display screen is in the first dispaly state
First infrared light can be transmitted to by the display screen except the mobile terminal, and the display screen is in the second dispaly state
When, infrared light can not be transmitted to by the display screen except the mobile terminal；
It controls bottom filtering circuit of making an uproar and filters out the direct current signal of infrared receiving tube output；
It is infrared by display screen reception second to control infrared receiving tube described in the pulse signal processing circuit processes
The pulse signal exported after light；
Determine that foreign object is in closer or far from state according to the pulse signal.
Include display screen, infrared transmitting tube and infrared receiving tube, infrared hair in mobile terminal provided in an embodiment of the present invention
One end that pipe is set to display screen is penetrated, infrared receiving tube is set to the other end of display screen, the first infrared light that infrared transmitting tube is sent out
It is transmitted to except mobile terminal by display screen, infrared receiving tube receives the second infrared light by display screen, and the second infrared light is
Infrared light of first infrared light after the object reflection except mobile terminal.By above-mentioned setting, infrared transmitting tube is set to
One end of display screen, infrared receiving tube be set to the other end of display screen, by the first infrared light of transmitting and can receive
Second infrared light realizes infrared detection function, in this way, can be separately provided on the display screen of mobile terminal red
Outer launch hole, you can realize infrared detection function, and also improve the utilization rate of display screen.
Description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, needed in being described below to the embodiment of the present invention
Attached drawing to be used is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention,
For those of ordinary skill in the art, without having to pay creative labor, it can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the position relationship of the display screen and infrared sensor in a kind of mobile terminal provided in an embodiment of the present invention
Figure；
Fig. 2 is that bottom in a kind of mobile terminal provided in an embodiment of the present invention is made an uproar the structure chart of filtering circuit；
Fig. 3 is a kind of flow chart of infrared detection method provided in an embodiment of the present invention；
Fig. 4 is the flow chart of another infrared detection method provided in an embodiment of the present invention；
Fig. 5 is a kind of application scenario diagram of mobile terminal provided in an embodiment of the present invention；
Fig. 6 is the structure chart of the display screen in another mobile terminal provided in an embodiment of the present invention；
Fig. 7 is the hardware architecture diagram of another mobile terminal provided in an embodiment of the present invention.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are some of the embodiments of the present invention, instead of all the embodiments.Based on this hair
Embodiment in bright, the every other implementation that those of ordinary skill in the art are obtained without creative efforts
Example, shall fall within the protection scope of the present invention.
The embodiment of the present invention provides a kind of mobile terminal, and as shown in Figs. 1-2, the mobile terminal includes display screen 1, infrared
Transmitting tube 2 and infrared receiving tube 3, the infrared transmitting tube 2 are set to one end of the display screen 1, and the infrared receiving tube 3 is set to
The other end of the display screen 1, the first infrared light that the infrared transmitting tube 2 is sent out are transmitted to described by the display screen 1
Except mobile terminal, the infrared receiving tube 3 receives the second infrared light by the display screen 1, and second infrared light is institute
State infrared light of first infrared light after the object reflection except the mobile terminal.
Wherein, display screen 1, infrared transmitting tube 2 and infrared receiving tube 3 can be each portion of an entire infrared detection module
Part, it is of course also possible to be each independent component.
Wherein, the infrared light that infrared receiving tube 3 receives includes two parts, and a part is that infrared transmitting tube 2 is sent out, warp
It crosses display screen 1 to go directly to the transmitting light of infrared receiving tube 3, another part is to be emitted to the external world by display screen 1, by extraneous anti-
It is emitted back towards display screen 1, the reflected light received by infrared receiving tube 3.Specifically, the infrared light that infrared transmitting tube 2 is launched can wrap
It includes and is emitted to the first extraneous infrared light by display screen 1, and the straight of infrared receiving tube 3 is directly conducted to by display screen 1
Flow infrared light.It includes reflecting back into display screen 1 by the external world then to be connect by infrared receiving tube 3 to be emitted to the first extraneous infrared light
The second infrared light received.Mobile terminal can detect distance of mobile terminal barrier according to the number of above-mentioned second infrared light
Distance distance, to realize the function of infrared detection.Emitted by infrared transmitting tube 2 it should be noted that above-mentioned, through aobvious
The direct current infrared light that display screen 1 is directly conducted in infrared receiving tube 3 can make the result of mobile terminal infrared detection have certain mistake
Difference, but error is smaller.In addition, the first infrared light that can also send out by comparing of mobile terminal and receiving second infrared
The number differences of light realize infrared detection function, such as：If the number differences of the first infrared light and the second infrared light are more than pre-
If value, then illustrate foreign object apart from mobile terminal farther out；If the number differences of the first infrared light and the second infrared light are less than or equal to
Preset value then illustrates that foreign object is closer apart from mobile terminal.It should be noted that the specific value of preset value does not limit herein,
Such as：Preset value can be 3 units or 5 units etc..
Specifically, as shown in Figure 1, being the display screen 1 in a kind of mobile terminal provided in an embodiment of the present invention and infrared hair
Penetrate the location diagram of pipe 2 and infrared receiving tube 3.Wherein, infrared light-emitting diode (Light may be used in infrared transmitting tube 2
Emitting Diode, LED).Infrared transmitting tube 2 and infrared receiving tube 3 can be respectively arranged at opposite two of display screen 1
End, certainly, infrared transmitting tube 2 and infrared receiving tube 3 can also be set on the adjacent both sides of display screen 1.Such as：If display screen
1 is rectangular display screen, and infrared transmitting tube 2 and infrared receiving tube 3 both sides that can be respectively arranged at rectangular display screen opposite also may be used
To be respectively arranged at the adjacent both sides of rectangular display screen.
Mobile terminal provided in an embodiment of the present invention includes display screen, infrared transmitting tube and infrared receiving tube, infrared emission
Pipe is set to the other end of display screen set on one end of display screen, infrared receiving tube, the first infrared light warp that infrared transmitting tube is sent out
It crosses display screen to be transmitted to except mobile terminal, infrared receiving tube receives the second infrared light by display screen, and the second infrared light is the
Infrared light of one infrared light after the object reflection except mobile terminal.By above-mentioned setting, infrared transmitting tube is set to aobvious
One end of display screen, infrared receiving tube are set to the other end of display screen, can by the first infrared light of transmitting and receive the
Two infrared lights realize infrared detection function, in this way, can be separately provided on the display screen of mobile terminal infrared
Launch hole, you can realize infrared detection function, and also improve the utilization rate of display screen.
Optionally, the mobile terminal further includes controller, and the controller is in first for controlling the display screen 1
Dispaly state, when the display screen 1 is in the first dispaly state, first infrared light is transmitted to institute by the display screen 1
It states except mobile terminal.
Wherein, when display screen 1 is in the first dispaly state, i.e., frame picture or silver color frame are displayed in white on display screen 1
Picture etc. can be transmitted to by display screen 1 except mobile terminal with more convenient first infrared light.
In the embodiment of the present invention, controller is in the first dispaly state for control display screen, can be with more convenient first
Infrared light is transmitted to by display screen except mobile terminal, in this way, improving the efficiency of transmission of the first infrared light.
Optionally, the mobile terminal further includes that bottom is made an uproar filtering circuit and pulse signal processing circuit, and the bottom, which is made an uproar, to be filtered out
Circuit is connect with the infrared receiving tube 3, the direct current signal for filtering out the output of the infrared receiving tube 3；
The controller is for controlling at least part display screen 1 in first dispaly state and the second display shape
Switch between state, so that first infrared light forms pulsed infrared light；Wherein, the display screen 1 is in described second and shows shape
When state, outside the impermeable transmitting to the mobile terminal of the display screen 1 of infrared light that the infrared transmitting tube 2 emits；I.e.
Display screen 1 is to infrared light shield.
The pulse signal processing circuit is connect with the infrared receiving tube 3, is passed through for handling the infrared receiving tube 3
The display screen 1 receives the pulse signal exported after the second infrared light.
Wherein, can be that display screen 1 shows first frame picture, at this time infrared light when display screen 1 is in the first dispaly state
It can pass through outside the transmitting to mobile terminal of display screen 1, and first frame picture can be white frame picture or off-white colour frame picture
Deng can be that display screen 1 shows the second frame picture when display screen 1 is in the second dispaly state, infrared light is impermeable aobvious at this time
Outside the transmitting to mobile terminal of display screen 1, and the second frame picture can be black frame picture or dark-grey colour frame picture etc..In addition,
Display screen 1 can alternately display first frame picture and the second frame picture, can also be drawn in conjunction with display first frame picture and the second frame
Face, such as：Cycle is carried out in the following manner to show：It first shows two frame first frame pictures, then shows frame the second frame picture；Or
Person first shows two frame the second frame pictures, then shows a frame first frame picture.It should be noted that when display screen 1 is respectively at
When one dispaly state and the second dispaly state, the picture type that display screen 1 is shown does not limit herein, and display screen 1 shows picture
Mode also do not limit.
Wherein, the infrared light that infrared receiving tube 3 receives at this time includes：It is sent out from infrared transmitting tube 2, through mobile terminal
Display screen 1 be directly conducted to the direct current infrared light of infrared receiving tube 3；It is then infrared that display screen 1 is returned to by external world's transmitting
The second infrared light that reception pipe 3 receives, and the second infrared light is also pulsed infrared light at this time.Then infrared receiving tube 3 exports
Signal includes direct current signal and pulse signal, wherein direct current signal converts to obtain according to direct current infrared light, and pulse signal is according to
Two infrared lights convert to obtain.
It should be noted that display screen 1, bottom are made an uproar, filtering circuit, pulse signal processing circuit and controller can form one
A infrared detection module, certainly, the infrared detection module can also include infrared transmitting tube 2 and infrared receiving tube 3.In addition, aobvious
Display screen 1, bottom make an uproar filtering circuit, pulse signal processing circuit, controller, infrared transmitting tube 2 and infrared receiving tube 3 in mobile terminal
In can also be independent device.
Wherein, the operation principle of the present embodiment can be as follows：Controller can be used for controlling a part of display screen 1 first
Switch between dispaly state and the second dispaly state, such as controller can be used for controlling a part of display screen 1 and alternately display first
Frame picture and the second frame picture, and first frame picture can be black frame picture, the second frame picture can be white frame picture, when
First frame picture is black frame picture, and the second frame picture is white frame picture, and the part of controller control mobile terminal is shown
Screen 1 alternately displays white frame picture and black frame picture, and the infrared light that infrared transmitting tube 2 emits at this time can be in display screen 1
Display screen 1 is transmitted when being displayed in white frame picture, cannot transmit display screen 1 when display screen 1 shows black frame picture, then thoroughly
The first infrared light for projecting display screen 1 is pulsed infrared light.And the above-mentioned pulsed infrared light for transmiting display screen 1 encounters barrier
It is the second infrared light that a then part that display screen 1 is received by infrared receiving tube 3, which can then be returned to, then the second infrared light is also arteries and veins
Rush infrared light, and the second infrared light can be converted into pulse signal in infrared receiving tube 3, and bottom make an uproar filtering circuit can be straight
The direct current signal for filtering out the output of infrared receiving tube 3 is connect, to reduce interference of the direct current signal to processing pulse signal when, pulse letter
Number processing circuit processes pulse signal, such as：When the pulse signal at the first moment is too small, pulse signal processing circuit is to packet at this time
It includes the pulse signal in a period of time at the first moment and the operations such as is integrated or amplified, to more convenient to pulse signal
The transmission of the judgement of size and more convenient pulse signal inside mobile terminal passes through pulse signal at this time by detecting
The size of pulse signal after processing circuit processes, you can the distance of detection distance of mobile terminal barrier, it is infrared to complete
Detection function.
Wherein, it is the first numerical value with a distance from barrier (being typically human body) when mobile terminal, mobile terminal is red at this time
The quantity for the second infrared light that outer reception pipe 3 receives is second value, and infrared receiving tube 3 is red according to the second of second value
Outer light can convert and export to obtain the pulse signal that numerical value is third value.It should be noted that the first numerical value can be 3 lis
Rice, 4 centimetres or 5 centimetres etc..In addition, the specific size of third value does not also limit herein, but third value, the second number
Value can be one-to-one with the first numerical value.Such as：When the first numerical value is 3 centimetres, second value can be 2 units
Second infrared light, third value can be 0.005 microampere；When the first numerical value is 4 centimetres, second value can be 1 unit
Second infrared light, third value can be 0.004 microampere.What third value can directly generate at the beginning of mobile terminal use,
It according to actual service condition, can also be adjusted during use.It should be noted that distance of mobile terminal hinders
Hinder the distance of object closer, the numerical value for the pulse signal that infrared receiving tube 3 exports is also bigger.
In addition, it is necessary to which explanation, in order to preferably distinguish pulse signal and direct current signal, can be made an uproar the bottom of by and filter out electricity
Road filters out direct current signal, only obtains pulse signal, and according to the numerical values recited of the pulse signal, detect mobile terminal and human body
The distance between.
Wherein, display screen 1 may include first area, and first area is infrared transmitting tube 2 of the infrared light from mobile terminal
To the light transmission region of infrared receiving tube 3；Controller can control first area in the first dispaly state and the second display shape
Switch between state, so that the first infrared light emitted outward across first area forms pulsed infrared light.Fig. 1 and Fig. 6 are referred to, is schemed
The lower section of first area 601 in 6 can be correspondingly arranged infrared transmitting tube 2 and infrared receiving tube 3.It should be noted that first
Region 601 can switch between the first dispaly state and the second dispaly state, and other on display screen in addition to first area 601
Region can only be in the first dispaly state or the second dispaly state, specifically, first area 601 can be in conjunction with display first
Frame picture and the second frame picture, and other regions on display screen in addition to first area 601 can only show first frame picture.
In the embodiment, controller can control first area and be shown by the combination of first frame picture and the second frame picture, so that
The first infrared light emitted outward across first area forms pulsed infrared light, avoid whole display screens 1 for combine show
Show first frame picture and the second frame picture, to preferably reduce whole display screens 1 for combine show first frame picture with
The energy that second frame picture is consumed, extends the service life of display screen 1 accordingly.
Mobile terminal provided in an embodiment of the present invention further includes that bottom is made an uproar filtering circuit and pulse signal processing circuit, and bottom is made an uproar filter
Except circuit is connect with infrared receiving tube, pulse signal processing circuit is connect with infrared receiving tube.By above-mentioned setting, controller is used
Switch between the first dispaly state and the second dispaly state in control at least part display screen, so as to pass through display screen to movement
Exterior of terminal transmitting the first infrared light formed pulsed infrared light, above-mentioned pulsed infrared light encounter barrier may return to it is infrared
In reception pipe, to realize infrared detection function, so that red without one be separately provided on the display screen of mobile terminal
Outer launch hole, you can realize infrared detection function.
Optionally, the display screen 1 includes the liquid crystal layer, light guide plate and the reflecting plate that are cascading, further includes and institute
The light emitting source 4 of light guide plate connection is stated, the infrared transmitting tube 2 is connect with the light guide plate.
Wherein, white light LEDs lamp bar may be used in light emitting source 4, it is of course also possible to white light LEDs one by one are together in series,
To constitute light emitting source 4.In addition, light emitting source 4, infrared transmitting tube 2 and infrared receiving tube 3 can may be contained within the light guide plate
The same side, and light emitting source 4 can be set between infrared transmitting tube 2 and infrared receiving tube 3, in this way, need not be in mobile terminal
Infrared emission hole is separately provided on display screen 1, so as to expand the display area of display screen 1, certainly, 2 He of infrared transmitting tube
Infrared receiving tube 3 can also be set to the different both sides of light guide plate.This is specifically located at not limit.
Wherein, the width of light emitting source 4 can be of same size with the region for showing on the display screen 1 of mobile terminal.
In the embodiment of the present invention, display screen includes the liquid crystal layer, light guide plate and reflecting plate being cascading, further include with
The infrared light of the light emitting source of light guide plate connection, infrared transmitting tube transmitting can be conducted along light guide plate, and infrared light can
To go out display screen through baffle reflection, in this way, by the way that liquid crystal layer, light guide plate and reflecting plate is arranged, can make to infrared light
Laser propagation effect is more preferable.
Optionally, the mobile terminal further includes application-specific IC (Application Specific
Integrated Circuits, ASIC), described one end ASIC is connect with the pulse signal processing circuit, and the ASIC's is another
One end is connect with the light emitting source 4；The ASIC is used in the case where the light emitting source 4 is in luminance, described in detection
Whether the numerical value for the pulse signal that infrared receiving tube 3 exports is more than default value；If detecting, the numerical value of the pulse signal is big
In the default value, the ASIC controls the light emitting source 4 and closes.
Wherein, the value of default value can be 0.01 microampere, 0.05 microampere or 0.10 microampere etc., and specific numerical value exists
This is not limited.And the value of default value can automatically be obtained in mobile terminal at the beginning of use, can also be with
The adjustment operation of user is adjusted.In addition, when pulse signal processing circuit includes analog-digital converter, ASIC can be with modulus
Converter connects.It should be noted that ASIC can be an independent device in the terminal.
In the embodiment of the present invention, when ASIC detects that the numerical value of the pulse signal of infrared receiving tube output is more than present count
Value, illustrates that the distance of distance of mobile terminal barrier is closer, and ASIC controls light emitting source and closes, even if mobile terminal is in the screen shape that goes out
State, the generation to reduce the kwh loss of mobile terminal, and the phenomenon that user's false triggering display screen can also be reduced, into
And make mobile terminal more intelligent.
Optionally, bottom filtering circuit of making an uproar includes that one end is connect with the infrared receiving tube 3, the direct current of other end ground connection
Absorber 6.
Wherein, current slot may be used in direct current absorber 6, and above-mentioned direct current absorber 6 can pass through direct current signal.It is above-mentioned straight
One end of stream absorber 6 is connected with the output end of infrared receiving tube 3, the other end ground connection of direct current absorber 6, so as to absorb
The direct current signal that infrared receiving tube 3 exports.
In the embodiment of the present invention, bottom filtering circuit of making an uproar includes direct current absorber, can absorb infrared receiving tube output
Direct current signal can reduce direct current signal to judging result when whether the numerical value for judging pulse signal reaches default value
It influences.
Optionally, the pulse signal processing circuit includes capacitance 5 and analog-digital converter, 5 one end of the capacitance with it is described
Infrared receiving tube 3 connects, and the other end is connect with the analog-digital converter.
Wherein, the specification of capacitance 5 can be designed according to the actual needs of mobile terminal, not limit the rule of capacitance 5 specifically
Lattice.Such as：The capacitance of 10 microfarads may be used in capacitance 5.In addition, analog-digital converter can convert pulse signal in digital letter
Number, the convenient transmission inside mobile terminal.
In the embodiment of the present invention, because the signal of infrared receiving tube output includes two parts, a part is AC signal,
Another part is direct current signal.And bottom filtering circuit of making an uproar includes capacitance, because of the function of " logical exchange hinders direct current " of capacitance,
So as to choose infrared receiving tube output pulse signal, to whether reach default in the numerical value for judging pulse signal
When numerical value, the interference of direct current signal can be reduced.
Optionally, the pulse signal processing circuit further includes amplifier 7, and the amplifier 7 is series at 5 He of the capacitance
Between analog-digital converter.
Wherein, the pulsed infrared light that infrared receiving tube 3 at a time receives is smaller, leads to the pulse signal of conversion
It is smaller, such as：It is smaller in the pulsed infrared light that the first reception arrives, cause the pulse signal of conversion also smaller, it is possible to
It is amplified the pulse signal at the first moment by amplifier 7, then is converted by analog-to-digital conversion device, and then facilitates transmission.
In the embodiment of the present invention, bottom filtering circuit of making an uproar further includes amplifier, infrared receiving tube output pulse signal compared with
Hour, it can be amplified, so that the transmission to pulse signal is more convenient.
Optionally, the pulse signal processing circuit further includes integrator, and the integrator is series at the capacitance 5 and institute
It states between analog-digital converter.
Wherein, increase the current signal of conversion, the pulse signal in a period of time can also be accumulated by integrator, then lead to
It crosses analog-to-digital conversion device to be converted, and then facilitates transmission.It should be noted that a period of time does not limit herein, such as can be with
It is 1 millisecond or 3 milliseconds etc..
In the embodiment of the present invention, above-mentioned mobile terminal can be mobile phone, tablet computer
(TabletPersonalComputer), laptop computer (Laptop Computer), personal digital assistant (Personal
Digital Assistant, abbreviation PDA), mobile Internet access device (Mobile Internet Device, MID) or wearable
Equipment (Wearable Device) etc..
In the embodiment of the present invention, bottom filtering circuit of making an uproar further includes integrator, infrared receiving tube output pulse signal compared with
Hour, the pulse signal received in a period of time can be added up, so that the transmission to pulse signal is more square
Just.
Optionally, the ASIC is additionally operable to：In the case where the light emitting source 4 is in OFF state, if the ASIC is examined
The numerical value for measuring the pulse signal of the output of the infrared receiving tube 3 is less than or equal to the default value, and the ASIC controls institute
Light emitting source 4 is stated to shine.
In the embodiment of the present invention, in the case where light emitting source is in OFF state, if ASIC detects that infrared receiving tube is defeated
The numerical value of the pulse signal gone out is less than or equal to default value, then may determine that distance of mobile terminal barrier is farther out at this time, from
And light emitting source can be controlled and shone so that the display screen of mobile terminal is in bright screen state, in this manner it is achieved that sending out light emitting source
The automatic adjustment of light, so that mobile terminal is more intelligent.
It is a kind of flow chart of infrared detection method provided in an embodiment of the present invention referring to Fig. 3, Fig. 3.Above method application
In mobile terminal, the mobile terminal includes display screen, infrared transmitting tube and infrared receiving tube, and the infrared transmitting tube is set to institute
One end of display screen is stated, the infrared receiving tube is set to the other end of the display screen；As shown in figure 3, this method includes following
Step：
The infrared emission signal that step 301, the detection infrared transmitting tube emit.
Wherein, detection infrared transmitting tube transmitting infrared emission signal, can detect infrared emission signal quantity and/or
The data such as emission time, do not limit specifically herein.
Wherein, display screen, infrared transmitting tube and infrared receiving tube can be all parts of an entire infrared detection module,
It is of course also possible to be each independent component.
The received IR signal that step 302, the detection infrared receiving tube are received by the display screen.
Wherein, when detecting received IR signal, the time of reception and/or the received quantity of received IR signal can be detected
Deng.
Wherein, the infrared light that infrared receiving tube receives includes two parts, and a part is the second infrared light, and another part is
Direct current infrared light, wherein direct current infrared light is emitted by infrared transmitting tube, is conducted through display screen red into infrared receiving tube
Outer light；By infrared transmitting tube transmitting, it is the first infrared light to emit the infrared light to mobile terminal through display screen, and first
It is the second infrared light that infrared light, which encounters the infrared light being back to again in infrared receiving tube after barrier,.Mobile terminal can be according to upper
The number for the second infrared light being back to after encountering barrier in infrared receiving tube is stated to detect distance of mobile terminal barrier
The distance of distance, to realize the function of infrared detection.It should be noted that it is above-mentioned by infrared transmitting tube transmitting, through display
Screen conduction to the direct current infrared light in infrared receiving tube can make the result of mobile terminal infrared detection have certain error, but accidentally
Difference is smaller.
Step 303, determined according to the infrared emission signal and the received IR signal foreign object be in closer or far from
State.
Wherein, can be detected in above-mentioned steps infrared emission signal emission time and received IR signal reception when
It carves, and calculates the time interval between emission time and the time of reception, leaned on by the size of time interval to determine that foreign object is in
Nearly mobile terminal or separate mobile terminal state, to realize infrared distance measurement function.Such as：If time interval is less than 1 millisecond,
Judge that foreign object is closer apart from mobile terminal, if time interval is more than 1 millisecond, judges foreign object apart from mobile terminal farther out.Certainly,
Infrared distance measurement function can also be realized according to the quantity of infrared emission signal and received IR signal, such as：Infrared emission is believed
Number and received IR signal number differences it is larger, then illustrate foreign object apart from mobile terminal farther out；Infrared emission signal and infrared
The number differences for receiving signal are smaller, then illustrate that foreign object is closer apart from mobile terminal.
Furthermore it is also possible to according to the received IR signal received number come judge foreign object relative movement terminal be in lean on
Close or remote from state.Such as：If the received IR signal received is more than 10 units, judge foreign object apart from mobile terminal
It is relatively close, if the received IR signal received is less than or equal to 10 units, judge foreign object apart from mobile terminal farther out.
Optionally, step 303 may include：
When the difference of the infrared emission signal and the received IR signal is less than or equal to preset value, at the foreign object
In close to state；
When the difference of the infrared emission signal and the received IR signal is more than preset value, the foreign object is in separate
State.
It should be noted that the specific value of preset value does not limit herein, such as：Preset value can be 3 units or
5 units of person etc..
In this embodiment, by comparing the difference of infrared emission signal and received IR signal, to outer to judge
Object is in close to or far from state so that the judging result of mobile terminal is more intuitive and accurate.
It is true according to infrared emission signal and received IR signal by step 301,302 and 303 in the embodiment of the present invention
Determine foreign object to be in closer or far from state so that without infrared emission hole is separately provided on the display screen of mobile terminal, you can
It realizes infrared detection function, and also improves the utilization rate of display screen.
It is the flow chart of another infrared detection method provided in an embodiment of the present invention referring to Fig. 4, Fig. 4.The present embodiment with
The main distinction of last embodiment is：The present embodiment can by controller control section display screen in the first dispaly state and
Switch between second dispaly state so that the first infrared light formed pulsed infrared light, and then according to the pulsed infrared light received come
Realize infrared detection function.The above method is applied to mobile terminal, and the mobile terminal includes display screen, infrared transmitting tube and red
Outer reception pipe, the infrared transmitting tube are set to one end of the display screen, and the infrared receiving tube is set to the another of the display screen
One end；As shown in figure 4, this approach includes the following steps：
Step 401 is shown by controller control at least part display screen in the first dispaly state and second
Show and switch between state, so that first infrared light forms pulsed infrared light；Wherein, the display screen is in the first dispaly state
When, first infrared light can be transmitted to by the display screen except the mobile terminal, and it is aobvious that the display screen is in second
When showing state, infrared light can not be transmitted to by the display screen except the mobile terminal；
Wherein, at least part display screen is controlled between the first dispaly state and the second dispaly state by controller to cut
It changes, so that the first infrared light forms pulsed infrared light, pulsed infrared light can be back to mobile terminal if encountering barrier, pass through
Display screen returns in infrared receiving tube, and the pulsed infrared light returned at this time in infrared receiving tube is the second infrared light.Pass through inspection
Survey the size of the second infrared light, you can realize infrared detection function.Likewise, the emission time of pulsed infrared light can also be detected
With the time of reception of the second infrared light, and the time interval between emission time and the time of reception is calculated, passes through time interval
Size determines that foreign object is in close to mobile terminal or far from mobile terminal state, to realize infrared distance measurement function.In addition.Also
The size that the number differences between pulsed infrared light and the second infrared light of reception can be emitted by detection, so that it is determined that foreign object
In close to mobile terminal or far from mobile terminal state.
Wherein, the operation principle of the present embodiment can be as follows：A part of display screen can be controlled by controller first
Switch between dispaly state and the second dispaly state, such as a part of display screen can be controlled by controller and alternately display first frame
Picture and the second frame picture, and first frame picture can be black frame picture, the second frame picture can be white frame picture, when
One frame picture is black frame picture, and the second frame picture is white frame picture, and the part that mobile terminal is controlled by controller is aobvious
Display screen alternately displays white frame picture and black frame picture, and the infrared light of infrared transmitting tube transmitting at this time can be in display screen display
Display screen is transmitted when showing white frame picture, display screen cannot be transmitted when display screen shows black frame picture, then transmit
First infrared light of display screen forms pulsed infrared light.And the above-mentioned pulsed infrared light for transmiting display screen encounters barrier then
It is the second infrared light that a then part that display screen is received by infrared receiving tube, which can be returned to, then the second infrared light is also that pulse is red
Outer light, and the second infrared light can be converted into pulse signal in infrared receiving tube, and and bottom is made an uproar, filtering circuit can be filtered directly
Except the direct current signal of infrared receiving tube output, to reduce interference of the direct current signal to processing pulse signal when, at pulse signal
Processing of circuit pulse signal is managed, such as：When the pulse signal at the first moment is too small, pulse signal processing circuit is to including at this time
Pulse signal in a period of time at one moment such as is integrated or is amplified at the operations, to more convenient to pulse signal size
Transmission inside mobile terminal of judgement and more convenient pulse signal, pass through pulse signal at this time by detecting and handle
The size of pulse signal after processing of circuit, you can the distance of detection distance of mobile terminal barrier, to complete infrared detection
Function.
Wherein, the infrared light that infrared receiving tube receives includes two parts, and a part is to encounter barrier to return through display screen
The pulsed infrared light (i.e. the second infrared light) being back in infrared receiving tube, and the partial pulse infrared light can be converted into pulse letter
Number, another part is sent out from infrared transmitting tube, and the direct current infrared light for reaching infrared receiving tube, the part are conducted through display screen
Direct current infrared light can be converted into direct current signal.
In addition, Fig. 5 is please referred to, when the display screen of mobile terminal switches between the first dispaly state and the second dispaly state,
The current signal that the infrared receiving tube 3 of mobile terminal exports may include two parts of direct current signal and pulse signal, and infrared
The current signal that reception pipe 3 exports is that the infrared light received according to infrared receiving tube 3 converts, and infrared receiving tube 3 connects
The infrared light received can be divided into two kinds of A and B, and B kind infrared lights are that infrared transmitting tube 2 emits, and transmits the formation of display screen 1
Pulsed infrared light；A kind infrared lights are that infrared transmitting tube 2 emits, and is directly over display screen 1 and injects infrared receiving tube 3
Direct current infrared light.And after B kind infrared transmissions go out display screen, after encountering barrier C (C is generally human body), transmission can be changed
Route returns in infrared receiving tube 3, then infrared receiving tube 3 receives B infrared lights, and converts to obtain arteries and veins according to above-mentioned B infrared lights
Signal is rushed, and A infrared lights are received through infrared receiving tube 3, and convert and obtain direct current signal.
Optionally, the display screen includes first area, and the first area is infrared light from the red of the mobile terminal
Outer transmitting tube to infrared receiving tube light transmission region, it is described to pass through controller control at least part display screen
Switch between the first dispaly state and the second dispaly state, so that first infrared light forms the step of pulsed infrared light, it can
To include：
The first area is controlled by the controller between the first dispaly state and the second dispaly state to switch, so that
It is transmitted to first infrared light except the mobile terminal by the first area and forms pulsed infrared light.
Wherein, first area is light transmission range of the infrared light from the infrared transmitting tube of mobile terminal to infrared receiving tube
Domain refers to Fig. 6, and the lower section of the first area 601 in Fig. 6 can be correspondingly arranged infrared transmitting tube and infrared receiving tube.It needs
Illustrate, first area 601 can switch between the first dispaly state and the second dispaly state, and the firstth area is removed on display screen
Other regions outside domain 601 can only be in the first dispaly state or the second dispaly state.
In the embodiment, controller control first area switches between the first dispaly state and the second dispaly state, and
Other regions in control display screen in addition to first area are only in the first dispaly state or the second dispaly state, when other
When region is in the second dispaly state, i.e., other regions are in screen state of going out, in this way, can reduce the electricity damage of mobile terminal
Consumption so that mobile terminal is more intelligent, using upper also more convenient.
Step 402, the control bottom filtering circuit of making an uproar filter out the direct current signal of the infrared receiving tube output.
Wherein, bottom make an uproar filtering circuit can directly filter out infrared receiving tube output direct current signal, to reduce direct current letter
Number to processing pulse signal when interference.
Infrared receiving tube is received by the display screen described in step 403, the control pulse signal processing circuit processes
The pulse signal exported after second infrared light.
Wherein, pulse signal processing circuit can to infrared receiving tube export pulse signal be amplified, integrate or
The operations such as number conversion can make in this way, by the operations such as being amplified or integrating to pulse signal to pulse signal
Size judges more convenient, by converting pulse signal to digital signal, can make pulse signal in mobile terminal
Portion's transmission is more convenient.
Step 404 determines that foreign object is in closer or far from state according to the pulse signal.
Wherein it is possible to judge that foreign object is in closer or far from state, to realize by detecting the quantity of pulse signal
Infrared distance measurement function.Such as：If detection pulse signal quantity be more than 10 units, judge foreign object apart from mobile terminal compared with
Closely, if the quantity of detection pulse signal is less than or equal to 10 units, judge foreign object apart from mobile terminal farther out.Certainly, sentence
Disconnected standard does not limit herein.
Optionally, the display screen includes the liquid crystal layer, light guide plate and reflecting plate being cascading, further include with it is described
The light emitting source of light guide plate connection, the infrared transmitting tube are connect with the light guide plate；After step 404, the above method can be with
Include the following steps：
In the case where the light emitting source is in luminance, the number of the pulse signal of the infrared receiving tube output is detected
Whether value is more than default value；
If detecting, the numerical value of the pulse signal is more than the default value, closes the light emitting source.
Wherein, the concrete numerical value of default value does not limit herein, and default value can be before mobile terminal manufacture
It just sets, when can also be that mobile terminal enables, is obtained from server automatically.
In the embodiment, when the numerical value for the pulse signal for detecting infrared receiving tube output is more than default value, explanation
The distance of distance of mobile terminal barrier is closer, then closes light emitting source, to make mobile terminal be in screen state of going out, to reduce
The kwh loss of mobile terminal, but also mobile terminal is more intelligent.
Optionally, if the numerical value for detecting the pulse signal is more than the default value, the light emitting source is closed
The step of after, the method further includes：
If detecting, the numerical value of the pulse signal of the infrared receiving tube output is less than or equal to the default value, opens
The light emitting source.
Wherein, after light emitting source extinguishes.Mobile terminal can also detect the pulse of the infrared receiving tube output in real time
Whether the numerical value of signal is more than default value, if detecting, the numerical value of the pulse signal of the infrared receiving tube output is less than or waits
In the default value, the light emitting source is opened so that light emitting source shines.It should be noted that detection refers to moving in real time
Whether the numerical value that terminal can detect the pulse signal of infrared receiving tube output at regular intervals is more than default value, and
A period of time is fixed, such as：It can be 1 millisecond, 2 milliseconds or 3 milliseconds etc..It does not limit herein specifically.
In the embodiment, after light emitting source extinguishes, and the numerical value of the pulse signal of infrared receiving tube output is detected
Less than or equal to default value, then it may determine that the distance between barrier and mobile terminal farther out, then open light emitting source so that
Light emitting source shines, in this way, when detecting obstacle distance mobile terminal farther out, light emitting source is opened, so that mobile terminal is more
Add intelligence, but also mobile terminal is using upper more convenient.
In embodiment of the present invention, processor controls at least part display screen in the first dispaly state and the second display shape
Switch between state, so that the first infrared light forms pulsed infrared light, so as to realize infrared detection function, filtering circuit is made an uproar at bottom can
To filter out direct current signal, only remaining pulse signal so that mobile terminal according to the size of pulse signal come detect mobile terminal with
When the distance between barrier, interference of the direct current signal to judging result can be reduced so that judging result is more accurate.This
Sample, providing one kind infrared emission hole need not be separately provided on a display screen, can be achieved with the scheme of infrared detection.
A kind of hardware architecture diagram of Fig. 7 mobile terminals of each embodiment to realize the present invention.
As shown in fig. 7, mobile terminal 700 include radio frequency (RadioFrequency, RF) circuit 710, it is memory 720, defeated
Enter unit 730, display unit 740, processor 750, voicefrequency circuit 760, communication module 770, power supply 780, display screen, infrared hair
Pipe and infrared receiving tube are penetrated, the infrared transmitting tube is set to one end of the display screen, and the infrared receiving tube is set to described aobvious
The other end of display screen, the first infrared light that the infrared transmitting tube is sent out are transmitted to the mobile terminal by the display screen
Except 700, the infrared receiving tube receives the second infrared light by the display screen, and second infrared light is described first red
Infrared light of the outer light after the object reflection except the mobile terminal 700.
Optionally, the mobile terminal 700 further includes controller, and the controller is in for controlling the display screen
One dispaly state, when the display screen is in the first dispaly state, first infrared light is transmitted to institute by the display screen
It states except mobile terminal 700.
Optionally, the mobile terminal 700 further includes that bottom is made an uproar filtering circuit and pulse signal processing circuit, and the bottom is made an uproar filter
Except circuit is connect with the infrared receiving tube, the direct current signal for filtering out the infrared receiving tube output；
The controller is for controlling at least part display screen between the first dispaly state and the second dispaly state
Switching, so that first infrared light forms pulsed infrared light；Wherein, it is infrared when the display screen is in the second dispaly state
Light can not be transmitted to by the display screen except the mobile terminal 700；
The pulse signal processing circuit is connect with the infrared receiving tube, passes through institute for handling the infrared receiving tube
It states display screen and receives the pulse signal exported after the second infrared light.
Optionally, the display screen includes the liquid crystal layer, light guide plate and reflecting plate being cascading, further include with it is described
The light emitting source of light guide plate connection, the infrared transmitting tube are connect with the light guide plate.
Optionally, the mobile terminal 700 further includes ASIC, and described one end ASIC connects with the pulse signal processing circuit
It connects, the other end of the ASIC is connect with the light emitting source；The ASIC is used to be in the feelings of luminance in the light emitting source
Under condition, whether the numerical value for detecting the pulse signal of the infrared receiving tube output is more than default value；If the ASIC is detected
The numerical value of the pulse signal is more than the default value, and the ASIC controls the light emitting source and closes.
Optionally, bottom filtering circuit of making an uproar includes that one end is connect with the infrared receiving tube, the direct current of other end ground connection
Absorber.
Optionally, the pulse signal processing circuit includes capacitance and analog-digital converter, described capacitance one end with it is described red
Outer reception pipe connection, the other end are connect with the analog-digital converter.
Optionally, the pulse signal processing circuit further includes amplifier, and the amplifier is series at the capacitance and mould
Between number converter.
Optionally, the pulse signal processing circuit further includes integrator, and the integrator is series at the capacitance and institute
It states between analog-digital converter.
Optionally, the ASIC is additionally operable to：In the case where the light emitting source is in OFF state, if the ASIC is detected
The numerical value of the pulse signal exported to the infrared receiving tube is less than or equal to the default value, and the ASIC controls the hair
Light source luminescent.
Wherein, input unit 730 can be used for receiving number input by user or character information, and generation and mobile terminal
The 700 related signal input of user setting and function control.Specifically, in the embodiment of the present invention, which can
To include touch panel 731.Touch panel 731, also referred to as touch screen collect user on it or neighbouring touch operation
(for example user uses the operations of any suitable object or attachment on touch panel 731 such as finger, stylus), and according to advance
The formula of setting drives corresponding attachment device.Optionally, touch panel 731 may include touch detecting apparatus and touch controller
Two parts.Wherein, the touch orientation of touch detecting apparatus detection user, and the signal that touch operation is brought is detected, by signal
Send touch controller to；Touch controller receives touch information from touch detecting apparatus, and is converted into contact coordinate,
The processor 750 is given again, and can be received order that processor 750 is sent and be executed.Furthermore, it is possible to using resistance-type,
The multiple types such as condenser type, infrared ray and surface acoustic wave realize touch panel 731.In addition to touch panel 731, input unit
730 can also include other input equipments 732, other input equipments 732 can include but is not limited to physical keyboard, function key
It is one or more in (such as volume control button, switch key etc.), trace ball, mouse, operating lever etc..
Wherein, display unit 740 can be used for showing information input by user or be supplied to information and the movement of user
The various menu interfaces of terminal 700.Display unit 740 may include display panel 741, optionally, LCD or organic hairs may be used
The forms such as optical diode (OrganicLight-EmittingDiode, OLED) configure display panel 741.
It should be noted that touch panel 731 can cover display panel 741, touch display screen is formed, when the touch display screen is examined
It measures and sends processor 750 on it or after neighbouring touch operation to determine the type of touch event, be followed by subsequent processing device
750 provide corresponding visual output according to the type of touch event in touch display screen.
Touch display screen includes Application Program Interface viewing area and common control viewing area.The Application Program Interface viewing area
And arrangement mode of the common control viewing area does not limit, can be arranged above and below, left-right situs etc. can distinguish two it is aobvious
Show the arrangement mode in area.The Application Program Interface viewing area is displayed for the interface of application program.Each interface can be with
Including the interface elements such as icon and/or widget desktop controls of at least one application program.The Application Program Interface viewing area
Or the empty interface not comprising any content.This commonly uses control viewing area for showing the higher control of utilization rate, for example,
Application icons such as button, interface number, scroll bar, phone directory icon etc. are set.
Wherein processor 750 is the control centre of mobile terminal 700, utilizes various interfaces and connection whole mobile phone
Various pieces, by running or executing the software program and/or module that are stored in first memory 721, and calling storage
Data in second memory 722 execute the various functions and processing data of mobile terminal 700, to mobile terminal 700
Carry out integral monitoring.Optionally, processor 750 may include one or more processing units.
Electronic equipment may include：Mobile phone, tablet computer, E-book reader, MP3 player, MP4 players, number
In camera, pocket computer on knee, vehicle-mounted computer, desktop computer, set-top box, intelligent TV set, wearable device extremely
One item missing.
More than, specific implementation mode only of the invention, but scope of protection of the present invention is not limited thereto, and it is any to be familiar with
Those skilled in the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all cover
Within protection scope of the present invention.Therefore, protection scope of the present invention should be subject to the protection scope in claims.
Claims (15)
1. a kind of mobile terminal, which is characterized in that the mobile terminal includes display screen, infrared transmitting tube and infrared receiving tube,
The infrared transmitting tube is set to one end of the display screen, and the infrared receiving tube is set to the other end of the display screen, described
The first infrared light that infrared transmitting tube is sent out is transmitted to by the display screen except the mobile terminal, the infrared receiving tube
By the display screen receive the second infrared light, second infrared light be first infrared light by the mobile terminal it
Infrared light after outer object reflection.
2. mobile terminal as described in claim 1, which is characterized in that the mobile terminal further includes controller, the control
Device is in the first dispaly state for controlling the display screen, and when the display screen is in the first dispaly state, described first is red
Outer light is transmitted to by the display screen except the mobile terminal.
3. mobile terminal as claimed in claim 2, which is characterized in that the mobile terminal further includes that bottom is made an uproar filtering circuit and arteries and veins
Rush signal processing circuit, bottom filtering circuit of making an uproar is connect with the infrared receiving tube, defeated for filtering out the infrared receiving tube
The direct current signal gone out；
The controller is for controlling at least part display screen between first dispaly state and the second dispaly state
Switching, so that first infrared light forms pulsed infrared light；Wherein, when the display screen is in second dispaly state,
Infrared light can not be transmitted to by the display screen except the mobile terminal；
The pulse signal processing circuit is connect with the infrared receiving tube, passes through described show for handling the infrared receiving tube
Display screen receives the pulse signal exported after the second infrared light.
4. mobile terminal as described in any one of claims 1-3, which is characterized in that the display screen includes being cascading
Liquid crystal layer, light guide plate and reflecting plate, further include the light emitting source being connect with the light guide plate, the infrared transmitting tube is led with described
Tabula rasa connects.
5. mobile terminal as claimed in claim 4, which is characterized in that the mobile terminal further includes application-specific IC
ASIC, described one end ASIC are connect with the pulse signal processing circuit, and the other end of the ASIC is connect with the light emitting source；
The ASIC is used in the case where the light emitting source is in luminance, detects the pulse signal of the infrared receiving tube output
Numerical value whether be more than default value；If the ASIC detects that the numerical value of the pulse signal is more than the default value, institute
It states ASIC and controls the light emitting source closing.
6. mobile terminal as claimed in claim 3, which is characterized in that the bottom make an uproar filtering circuit include one end with it is described infrared
Reception pipe connects, the direct current absorber of other end ground connection.
7. mobile terminal as claimed in claim 3, which is characterized in that the pulse signal processing circuit includes capacitance and modulus
Converter, described capacitance one end are connect with the infrared receiving tube, and the other end is connect with the analog-digital converter.
8. mobile terminal as claimed in claim 7, which is characterized in that the pulse signal processing circuit further includes amplifier,
The amplifier is series between the capacitance and analog-digital converter.
9. mobile terminal as claimed in claim 7, which is characterized in that the pulse signal processing circuit further includes integrator,
The integrator is series between the capacitance and the analog-digital converter.
10. mobile terminal as claimed in claim 5, which is characterized in that the ASIC is additionally operable to：It is in and puts out in the light emitting source
In the case of state of going out, if the ASIC detects that the numerical value of the pulse signal of the infrared receiving tube output is less than or equal to institute
Default value is stated, the ASIC controls the light emitting source and shines.
11. a kind of infrared detection method, which is characterized in that be applied to mobile terminal, the mobile terminal includes display screen, infrared
Transmitting tube and infrared receiving tube, the infrared transmitting tube are set to one end of the display screen, and the infrared receiving tube is set to described
The other end of display screen；
The method includes：
Detect the infrared emission signal of the infrared transmitting tube transmitting；
Detect the received IR signal that the infrared receiving tube is received by the display screen；
Determine that foreign object is in closer or far from state according to the infrared emission signal and the received IR signal.
12. method as claimed in claim 11, which is characterized in that described according to the infrared emission signal and described infrared to connect
A number determining foreign object of collecting mail is in closer or far from state, including：
When the difference of the infrared emission signal and the received IR signal is less than or equal to preset value, the foreign object is in and leans on
Nearly state；
When the difference of the infrared emission signal and the received IR signal is more than preset value, the foreign object is in far from shape
State.
13. a kind of infrared detection method, which is characterized in that be applied to mobile terminal, the mobile terminal includes display screen, infrared
Transmitting tube and infrared receiving tube, the infrared transmitting tube are set to one end of the display screen, and the infrared receiving tube is set to described
The other end of display screen；The mobile terminal further includes that bottom is made an uproar filtering circuit, pulse signal processing circuit and controller, the bottom
Filtering circuit of making an uproar is connect with the infrared receiving tube, and the pulse signal processing circuit is connect with the infrared receiving tube；
The method includes：
Switched between the first dispaly state and the second dispaly state by controller control at least part display screen,
So that the first infrared light forms pulsed infrared light；Wherein, when the display screen is in the first dispaly state, first infrared light
It can be transmitted to except the mobile terminal by the display screen, when the display screen is in the second dispaly state, infrared light is not
It can be transmitted to except the mobile terminal by the display screen；
It controls bottom filtering circuit of making an uproar and filters out the direct current signal of infrared receiving tube output；
After infrared receiving tube described in the pulse signal processing circuit processes is controlled by the display screen the second infrared light of reception
The pulse signal of output；
Determine that foreign object is in closer or far from state according to the pulse signal.
14. method as claimed in claim 13, which is characterized in that the display screen include the liquid crystal layer being cascading,
Light guide plate and reflecting plate, further include the light emitting source being connect with the light guide plate, and the infrared transmitting tube is connect with the light guide plate；
It is described according to the pulse signal determine foreign object be in closer or far from state the step of after, the method further includes：
In the case where the light emitting source is in luminance, detecting the numerical value of the pulse signal of the infrared receiving tube output is
It is no to be more than default value；
If detecting, the numerical value of the pulse signal is more than the default value, closes the light emitting source.
15. method as claimed in claim 14, which is characterized in that if the numerical value for detecting the pulse signal is more than institute
After the step of stating default value, closing the light emitting source, the method further includes：
If detecting, the numerical value of the pulse signal of infrared receiving tube output is less than or equal to the default value, described in unlatching
Light emitting source.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810353399.XA CN108614651B (en) | 2018-04-19 | 2018-04-19 | Mobile terminal and infrared detection method |
| PCT/CN2019/082048 WO2019201130A1 (en) | 2018-04-19 | 2019-04-10 | Mobile terminal and infrared detection method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810353399.XA CN108614651B (en) | 2018-04-19 | 2018-04-19 | Mobile terminal and infrared detection method |
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| WO2019201130A1 (en) * | 2018-04-19 | 2019-10-24 | 维沃移动通信有限公司 | Mobile terminal and infrared detection method |
| CN110865710A (en) * | 2019-11-19 | 2020-03-06 | Oppo（重庆）智能科技有限公司 | Terminal control method and device, mobile terminal and storage medium |
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| CN202956858U (en) * | 2012-10-31 | 2013-05-29 | 东北师范大学 | Population density monitor |
| CN203274811U (en) * | 2013-03-22 | 2013-11-06 | 宁波全景电器技术有限公司 | Flowmeter |
| CN105005419A (en) * | 2015-08-04 | 2015-10-28 | 北京汇冠新技术股份有限公司 | Non-contact gesture recognition infrared touch screen |
| CN206400488U (en) * | 2017-01-17 | 2017-08-11 | 广东欧珀移动通信有限公司 | Cover plate, display device and terminal |
| CN207150648U (en) * | 2017-07-28 | 2018-03-27 | 努比亚技术有限公司 | Light sensitive device and mobile terminal |
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| WO2019201130A1 (en) * | 2018-04-19 | 2019-10-24 | 维沃移动通信有限公司 | Mobile terminal and infrared detection method |
| CN110865710A (en) * | 2019-11-19 | 2020-03-06 | Oppo（重庆）智能科技有限公司 | Terminal control method and device, mobile terminal and storage medium |
| CN110865710B (en) * | 2019-11-19 | 2023-08-18 | Oppo（重庆）智能科技有限公司 | Terminal control method and device, mobile terminal and storage medium |
| CN111487635A (en) * | 2020-05-11 | 2020-08-04 | 苏州市运泰利自动化设备有限公司 | High-precision infrared dynamic infrared ranging system and method |
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| WO2019201130A1 (en) | 2019-10-24 |
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