CN109904718A - Control system and control method, the terminal of flight time component - Google Patents
Control system and control method, the terminal of flight time component Download PDFInfo
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- CN109904718A CN109904718A CN201910229457.2A CN201910229457A CN109904718A CN 109904718 A CN109904718 A CN 109904718A CN 201910229457 A CN201910229457 A CN 201910229457A CN 109904718 A CN109904718 A CN 109904718A
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Abstract
This application discloses a kind of control systems of flight time component.Flight time component includes laser light source and sensor.Laser light source is for emitting laser, and sensor is for receiving the laser being reflected back toward.Control system includes driving chip and application processor.Driving chip is connect with laser light source, and for driving laser light source to emit laser.Application processor is all connected with sensor and driving chip, and whether feedback information of the application processor for receiving sensor be abnormal with identification sensor, and when recognizing sensor abnormality, is issued closing control signal to control driving chip and closed laser light source.Disclosed herein as well is a kind of terminal and the control methods of flight time component.Application processor and sensor and driving chip are all connected with, and when recognizing sensor and being abnormal, direct controlling and driving chip closes laser light source, prevent laser hazard to user, and the safety in utilization of flight time component is higher.
Description
Technical field
This application involves consumer electronics technical fields, more specifically, are related to a kind of control system of flight time component
System and control method, terminal.
Background technique
It can be set depth acquisition device on the electronic devices such as mobile phone, a kind of depth acquisition device can use the flight time
(Time of Flight, TOF) technology obtains the depth of target object, and concrete mode is that control light source swashs to target object transmitting
Light, then the laser reflected by target object is received, by calculating the time and the time for the laser for receiving reflection that laser issues
Between phase difference to obtain the depth of target object, and when the sensor of depth acquisition device is abnormal, can to swash
Light is abnormally emitted, and is easy to hurt user, and the safety in utilization of depth acquisition device is caused to reduce.
Summary of the invention
The application embodiment provides the control system and control method, terminal of a kind of flight time component.
The control system of the flight time of the application embodiment is for controlling flight time component, the flight time group
Part includes laser light source and sensor, and for emitting laser, the sensor is used to receive to be reflected back toward the laser light source
The laser.The control system includes driving chip and application processor.The driving chip and the laser light source connect
It connects, and for driving the laser light source to emit the laser.The application processor and the sensor and the driving core
Piece is all connected with, and the application processor identifies whether the sensor is abnormal for receiving the feedback information of the sensor,
And when recognizing the sensor abnormality, closing control signal is issued to control the driving chip and closes the laser light
Source.
The terminal of the application embodiment includes control system described in flight time component and any of the above-described embodiment,
Control system is connect with flight time component.
The control method of the flight time component of the application embodiment is for controlling flight time component, when the flight
Between component include laser light source and sensor, the control method includes receiving the feedback information of the sensor to identify
Sensor is stated whether extremely and when recognizing the sensor abnormality, closes the laser light source.
In the control system and control method, terminal of the flight time component of the application embodiment, application processor and
Sensor and driving chip are all connected with, and when recognizing sensor and being abnormal, direct controlling and driving chip closes laser light
Source, prevents laser hazard to user, and the safety in utilization of flight time component is higher.
The additional aspect and advantage of presently filed embodiment will be set forth in part in the description, partially will be from following
Description in become obvious, or recognized by the practice of presently filed embodiment.
Detailed description of the invention
The above-mentioned and/or additional aspect and advantage of the application is from combining in description of the following accompanying drawings to embodiment by change
It obtains obviously and is readily appreciated that, in which:
Fig. 1 is the structural schematic diagram of the terminal of the application embodiment；
Fig. 2 is the flight time component of the application embodiment and the structural schematic diagram of control system；
Fig. 3 is the schematic illustration of the application processor identification sensor exception of the application embodiment；
Fig. 4 is that the structure of the driving chip of the application embodiment and signal move towards schematic diagram；
Fig. 5 is that the structure of the application processor of the application embodiment and signal move towards schematic diagram；
Fig. 6 to Fig. 8 is the module diagram of the control system of the application embodiment；
Fig. 9 is the structural schematic diagram of the terminal of the application embodiment；
Figure 10 is the flow diagram of the control method of the flight time component of the application embodiment.
Main element symbol description:
Terminal 100, flight time component 10, optical transmitting set 11, laser light source 111, diffuser 112, optical receiver 12,
Lens 121, sensor 122, substrate 13, control system 20, driving chip 21, application processor 22, modulation module 25, power supply
Module 26, signal generator 27, shell 30, display screen 40.
Specific embodiment
Presently filed embodiment is described further below in conjunction with attached drawing.Same or similar label is from beginning in attached drawing
To the same or similar element of expression or element with the same or similar functions eventually.
In addition, the presently filed embodiment described with reference to the accompanying drawing is exemplary, it is only used for explaining the application's
Embodiment, and should not be understood as the limitation to the application.
In this application unless specifically defined or limited otherwise, fisrt feature in the second feature " on " or " down " can be with
It is that the first and second features directly contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature
But fisrt feature is directly above or diagonally above the second feature above the second feature " above ", " above " and " above ", or only table
Show that first feature horizontal height is higher than second feature.Fisrt feature can be under the second feature " below ", " below " and " below "
Fisrt feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
Fig. 1 and Fig. 2 is please referred to, the terminal 100 of the application embodiment includes flight time component 10 and control system
20.Terminal 100 can use control system 20 and control the depth information that flight time component 10 obtains target object, to utilize
Depth information carries out the operation such as ranging, modeling.Terminal 100 specifically can be mobile phone, tablet computer, remote controler, intelligence wearing and set
Standby etc., terminal 100 can also be the plug-in device being mounted on mobile platform (such as unmanned plane, automobile etc.).The application is implemented
Example is illustrated so that terminal 100 is mobile phone as an example, it will be understood that the concrete form of terminal 100 is not limited to mobile phone.In such as Fig. 1 institute
In the example shown, terminal 100 includes shell 30, and shell 30 can be used for installing flight time component 10 and control system 20.
Referring to Fig. 1, flight time component 10 may be mounted in shell 30, specifically, in one example, shell
Through-hole is offered on 30, flight time component 10 is mounted in shell 30 simultaneously and through-hole alignment, through-hole can be provided with shell 30
Front or the back side；In another example, flight time component 10 is mounted in shell 30 and align display screens 40, that is, is set
It sets under display screen 40, the optical signal that flight time component 10 emits passes through display screen 40 and enters extraneous or extraneous light letter
Number pass through display screen 40 received by flight time component 10.
Incorporated by reference to Fig. 2, flight time component 10 includes optical transmitting set 11 and optical receiver 12.Optical transmitting set 11 connects with light
Receiving device 12 can be set on the same substrate 13.Optical transmitting set 11 includes laser light source 111 and diffuser 112, laser light source
111 can be vertical cavity surface emitting laser (Vertical Cavity Surface Emitting Laser, VCSEL), swash
Radiant 111 can be used for emitting infrared laser, and the wavelength of infrared laser can be 940 nanometers, and infrared laser can have uniformly
Spot pattern.Diffuser (diffuser) 112 is arranged in the optical path of infrared laser, and laser light source 111 emits infrared sharp
Light is spread through diffuser 112, with more uniformly to emitting in free surrounding space.
Referring to Fig. 2, in the embodiment of the present application, the infrared laser that laser light source 111 emits is laser pulse (such as Fig. 3
Shown in shown in T1 signal), i.e., in high level, laser light source 111 emits laser pulse, the laser light source 111 in low level
Do not emit laser pulse, to avoid lasting transmitting bring is dangerous and heating problem.
Optical receiver 12 includes lens 121 and sensor 122.Infrared laser reaches mesh after projecting in optical transmitting set 11
Object is marked, under the reflex of target object, infrared laser is received back to optical receiver 12 and by optical receiver 12.Tool
Body, the infrared laser reflected is received after passing through lens 121 by sensor 122.Emitted by calculating laser light source 111 red
Outer laser and sensor 122 receive the time difference for the infrared laser being reflected back toward, can be calculated target object relative to
The depth (that is, distance) of flight time component 10.
Fig. 1, Fig. 2 and Fig. 5 are please referred to, control system 20 can be connect with flight time component 10, and control system 20 can be used
In the transmitting of control flight time component 10 and receive infrared laser.Control system 20 includes driving chip 21 and application processor
22 (Application Processor, AP).Driving chip 21 is connect with laser light source 111, and driving chip 21 is for driving
Laser light source 111 emits laser.Application processor 22 is all connected with sensor 122 and driving chip 21.Application processor 22 exists
It is whether abnormal by feedback information identification sensor 122 after the feedback information for receiving sensor 122, in application processor 22
When recognizing 122 exception of sensor, closing control signal is issued to driving chip 21, driving chip 21 is receiving closing control
Laser light source 111 is closed after signal to close.
Specifically, as shown in figure 4, driving chip 21 can obtain electric energy from external power supply by chip energization pins, lead to
It crosses communication interface (such as SDIO pin, SCLK pin) to communicate with external module, passes through laser light source energization pins and laser light
Source current connection controls signal pins by laser light source and connect with laser light source 111.Driving chip 21 can be set in base
On plate 13.Fig. 4 to fig. 6 is please referred to, application processor 22 is all connected with driving chip 21 and sensor 122, application processor 22
Whether the feedback information of receiving sensor 122 carrys out identification sensor 122 abnormal.In one embodiment, sensor 122 has
Abnormal detection function, in some functional modules such as modulation module 25 (Fig. 6 shows) etc. when something goes wrong actively to application processor 22
Corresponding exception information is sent, application processor 22 can the presence exception of identification sensor 122 after receiving the exception information.
In another example, sensor 122 continues to send feedback information to application processor 22 to indicate that it is in normal work shape
State, and when application processor 22 does not receive feedback information, application processor 22 judges that sensor 122 is abnormal.Using place
Managing device 22 can be by sending control output signal to driving chip 21, and control output signal can be above-mentioned closing control
Signal sends closing control signal to driving chip 21, is driving when application processor 22 recognizes 122 exception of sensor
When chip 21 receives closing control signal, driving chip 21 closes laser light source 111, stops laser light source 111 to outgoing
Penetrate laser.
To sum up, in the terminal 100 of the application embodiment, application processor 22 and sensor 122 and driving chip 21
It is all connected with, when recognizing sensor 122 and being abnormal, direct controlling and driving chip 21 closes laser light source 111, prevents laser
User is hurt, the safety in utilization of flight time component 10 is higher.
Referring to Fig. 6, in some embodiments, control system 20 further includes modulation module 25.Modulation module 25
It is integrated on sensor 122.Preset modulation mode is stored in modulation module 25；Driving chip 21 is connect with sensor 122,
Driving chip 21 can receive the preset modulation mode in modulation module 25, and driving chip 21 drives laser by preset modulation mode
Light source 111 emits laser.Application processor 22 is used to obtain the reception target object of sensor 122 according to feedback information and is reflected back
The shape information that generates of laser, application processor 22 is considered as and recognizes in the shape information and when preset modulation mode difference
Sensor 122 is abnormal.
Specifically, the system that can be used as terminal 100 incorporated by reference to Fig. 4, application processor 22, application processor 22 connect
Sensor 122, sensor 122 can work under the control of application processor 22.Meanwhile application processor 22 can also connect
The feedback signal (that is, feedback information) that sensor 122 issues is received, when controlling output signal is closing control signal, using place
It manages device 22 and closing control instruction is sent to driving chip 21 by the communication interface of driving chip 21, the response of driving chip 21 is closed
Control instruction is closed, laser light source 111 is closed, the stopping of laser light source 111 is made to launch outward laser.
Modulation module 25 can send driving chip 21 for the preset modulation mode of storage, in flight time component 10
When normal work, driving chip 21 drives laser light source 111 to emit laser according to preset modulation mode, wherein preset modulation side
Formula may include laser light source 111 emit laser shape information, preset modulation mode may include it is multiple, different
Under usage scenario, driving chip 21 can drive laser light source 111 to emit laser according to different preset modulation modes.
Sensor 122 is abnormal, it may be possible to which laser light source 111 fails to emit laser according to preset modulation system, i.e.,
Modulation module 25 breaks down, it is also possible to and sensor 122 entirely breaks down, when application processor 22 can receive feedback information,
I.e. application processor 22 can be communicated with sensor 122, can get that sensor 122 receives according to feedback information by mesh
The shape information for the laser that mark object is reflected back, then compares the corresponding shape information of feedback information and preset modulation mode pair
The shape information answered is to judge whether modulation module 25 damages.Referring to Fig. 3, in one example, laser light source 111
Normal transmission laser, preset modulation mode are two kinds, respectively correspond shape information T1 and shape information T2, and feedback information is corresponding
Shape information T3 be all different with shape information T1 and shape information T2, may be at this time modulation module 25 damage, or drive
The dynamic damage of chip 21 or laser light source 111 damage, and are accordingly to be regarded as the damage of sensor 122, specifically, are considered as sensor 122
Modulation module 25 damage.
Wherein, the corresponding shape information of feedback information shape information corresponding with preset modulation mode is not identical refers to instead
The high level duration of the high level duration of the corresponding shape information of feedforward information and the corresponding shape information of preset modulation mode is not
Together.In another example, it is sent out when application processor 22 can not receive sensor 122 after laser light source 11 emits laser
Out when feedback information, i.e., sensor 122 can not be communicated with application processor 22, can determine whether that sensor 122 is entire bad
Fall.
When application processor 22 identifies that being considered as modulation module 25 extremely breaks down, application processor 22 is transmittable to close control
Signal processed is to sensor 122, and control driving chip 21 closes laser light source after sensor 122 receives closing control signal
111, application processor 22 can also directly transmit closing control signal to driving chip 21, and driving chip 21 receives closing
Laser light source 111 is closed after controlling signal.After application processor 22 identifies that exception is that sensor 122 entirely breaks down, using place
It manages device 22 and sends closing control signal to driving chip 21, driving chip 21 closes laser light after receiving closing control signal
Source 111.Ensure to close laser light source 111 when sensor 122 is abnormal in time.
Referring to Fig. 2 and Fig. 3, in some embodiments, application processor 22 is obtained according to feedback information and is sensed
Device 122 receives the shape information T3 for the laser that target object is reflected back, in the high level of the corresponding shape information T3 of feedback information
When duration is greater than predetermined set, it is considered as and recognizes 122 exception of sensor.
Specifically, application processor 22 according to feedback information get sensor 122 receive target object be reflected back swash
After the shape information T3 of light, it is pre- then to judge whether the high level duration of the corresponding shape information T3 of feedback information is greater than
Fixed setting, wherein predetermined set can be one or a set of quantitative, such as corresponding with the lasting duration of high level predetermined set
10 milliseconds, 15 milliseconds are set to, predetermined set can also be the variable according to different scenes variation, such as when environmental light intensity is weaker
When, predetermined set corresponding with the lasting duration of high level is 15 milliseconds, and when environmental light intensity is stronger, continue with high level
The corresponding predetermined set of duration be 10 milliseconds, a length of couple of people not will cause wound when the high level of the corresponding laser of predetermined set
Harmful maximum high level duration.It is greater than predetermined set in the high level duration of the corresponding shape information T3 of feedback information
When, illustrate that the laser that laser light source 111 issues may generate injury to people, so application processor 22, which is considered as, recognizes biography
Sensor 122 is abnormal, issues closing control signal to driving chip 21 to close laser light source 111, guarantees flight time component 10
Safety in utilization.
Referring to Fig. 6, in some embodiments, sensor 122 has abnormal detection function, when sensor abnormality is
When modulation module 24 damages, sensor 122 can the closing laser light source 111 of direct controlling and driving chip 21.
Specifically, sensor 122 can detect the exception of therein element, for example, when sensor 122 detects
To when the abnormal damage for modulation module 24, at this point, sensor 122 does not break down completely, sensor 122 can be with driving chip 21
It is communicated, to issue closing control signal when modulation module 24 damages to driving chip 21, driving chip 21 is received
Laser light source 111 is closed after closing control signal.In this way, sensor 122 is not necessarily to judge exception by application processor 22, it can
It is quickly detected the exception of itself and controls driving chip 21 when being abnormal and close laser light source 111, guarantee the flight time
The safety in utilization of component 10.
Referring to Fig. 7, in some embodiments, control system 20 further includes power module 26, power module 26 and is swashed
Radiant 111 connects and for powering to laser light source 111.Power module 26 is also connect with application processor 22, power module
26 when receiving closing control signal, disconnects to the power supply of laser light source 111.
Incorporated by reference to Fig. 5, application processor 22 can send control output signal to power module 26 at this time, defeated when controlling
When signal is closing control signal out, power module 26 disconnects the power supply to laser light source 111 to reach closing laser light source
111 purpose.Specifically, when flight time component 10 works normally, application processor 22 can be sent to power module 26
Low level electric signal, power module 26 are continuously the power supply of laser light source 111, and application processor 22 sends height to power module 26
When level electrical signal (may be regarded as closing control signal), power module 26 responds the high level electric signal, stops to laser light source
111 power supplies, until application processor 22 sends low level electric signal to power module 26 again, power module 26 is again to sharp
Radiant 111 is powered.
Referring to Fig. 8, in some embodiments, control system 20 further includes application processor 22 and signal generator
27.22 connection signal generator 27 of application processor.Signal generator 27 is connect with application processor 22.Signal generator 27
When receiving closing control signal, the abnormal prompt information of flight time component 10 is issued.
User can know that flight time component 10 does not work normally by the prompt information that signal generator 27 issues, and
User may be hurt, user can take corresponding measure to avoid being injured in time, such as close terminal 100, change terminal
100 towards to avoid being irradiated with a laser.Specifically, signal generator 27 can be light beam generator, in one example,
As shown in figure 9, signal generator 27 can be display screen 40, prompt information can be shown in the letter of the prompt on display screen 40
Breath, such as display reminding text, pattern, animation etc.；Signal generator 27 can also be sound generator, in one example,
Signal generator 27 can be loudspeaker etc., and prompt information can be the voice prompting of loudspeaker sending；Signal generator 27 is also
It can be actuator, in one example, actuator can be vibration motor etc., and prompt information can be vibration motor with pre-
The shell 30 of fixed frequency drives terminal 100 shakes.
Referring to Fig. 9, in one example, when signal generator 27 receives predetermined operation, application processor 22 stops
It issues closing control signal and laser light source 111 reopens.For shown in Fig. 9, display screen 40, which can be shown, " clicks weight
The prompt information of examination (10S) ", user can click the prompt information, after display screen 40 receives the clicking operation of user, depending on
To receive predetermined operation, application processor 22 stops issuing closing control signal at this time, and laser light source 111 is opened again
It opens.Certainly, for different types of signal generator 27, different prompt informations, the type of predetermined operation may also can not
Together, this is not restricted.
Referring to Fig. 9, in another example, after application processor 22 issues closing control signal scheduled duration,
Application processor 22 stops issuing closing control signal, and laser light source 111 reopens.Specifically, scheduled duration can be
Any duration such as 10 seconds, 7 seconds, 3 seconds, terminal 100 can restart in scheduled duration software relevant to laser light source 111 or
Person carries out self-test, and laser light source 111 is opened after scheduled duration, to meet the use demand of user.
In some embodiments, when the number that laser light source 111 is continuously closed is more than pre-determined number, application processor
22 continuously send out closing control signal.After laser light source 111 is closed and reopens, application processor 22 may be examined still
It measures flight time component 10 to fail to work normally, and issues closing control signal again and laser light source 111 is closed again
It closes.When the number that laser light source 111 is continuously closed is more than pre-determined number, illustrate that flight time component 10 may have occurred
Hardware damage is difficult to the software fault repaired, and the needs of flight time component 10 are more fully detected or repaired ability
Therefore normal use in order to ensure that user security, application processor 22 continuously send out closing control signal at this moment, avoids swashing
Radiant 111, which is opened by mistake, to be opened.
Incorporated by reference to Figure 10, the control method of the flight time component 10 of the application embodiment, control method comprising steps of
01: whether the feedback information of receiving sensor 122 is abnormal with identification sensor 122；
02: when recognizing 122 exception of sensor, closing laser light source 111.
Wherein, step 01 and step 02 can be implemented by the application processor 22 of above-mentioned control system 20.Control method
Specific implementation details can be refering to the above-mentioned description to control system 20, and details are not described herein.
In the description of this specification, reference term " certain embodiments ", " embodiment ", " some embodiment party
The description of formula ", " exemplary embodiment ", " example ", " specific example " or " some examples " means in conjunction with the embodiment party
Formula or example particular features, structures, materials, or characteristics described are contained at least one embodiment or example of the application
In.In the present specification, schematic expression of the above terms are not necessarily referring to identical embodiment or example.Moreover,
Particular features, structures, materials, or characteristics described can be in any one or more embodiments or example with suitable
Mode combine.
In addition, term " first ", " second " are used for description purposes only, it is not understood to indicate or imply relatively important
Property or implicitly indicate the quantity of indicated technical characteristic." first " is defined as a result, the feature of " second " can be expressed
Or implicitly include at least one described feature.In the description of the present application, the meaning of " plurality " is at least two, such as
Two, three, unless otherwise specifically defined.
Although embodiments herein has been shown and described above, it is to be understood that above-described embodiment is example
Property, it should not be understood as the limitation to the application, those skilled in the art within the scope of application can be to above-mentioned
Embodiment is changed, modifies, replacement and variant, and scope of the present application is defined by the claims and their equivalents.
Claims (11)
1. a kind of control system of flight time component, which is characterized in that the flight time component includes laser light source and biography
Sensor, the laser light source is for emitting laser, and the sensor is for receiving the laser being reflected back toward, the control system
System includes:
Driving chip, the driving chip are connect with the laser light source, and for driving the laser light source transmitting is described to swash
Light；And
Application processor, the application processor are all connected with the sensor and the driving chip, the application processor
It is whether abnormal to identify the sensor for receiving the feedback information of the sensor, and recognizing the sensor abnormality
When, closing control signal, which is issued, to control the driving chip closes the laser light source.
2. control system according to claim 1, which is characterized in that the feedback information includes that the sensor is actively sent out
The exception information of the application processor is given, when the application processor receives the exception information, is considered as and recognizes institute
State sensor abnormality.
3. control system according to claim 1, which is characterized in that the application processor is not receiving the sensing
When the feedback information of device, it is considered as and recognizes the sensor abnormality.
4. control system according to claim 1, which is characterized in that the control system further includes being integrated in the sensing
Modulation module on device is stored with preset modulation mode in the modulation module；The driving chip is connect with the sensor
To receive in a manner of the preset modulation, the driving chip is driven described in the laser light source emits by the preset modulation mode
Laser；The application processor is used to obtain the received laser being reflected back toward of the sensor according to the feedback information
Shape information be considered as in the shape information and when the preset modulation mode difference and recognize the sensor abnormality.
5. control system according to claim 1, which is characterized in that the application processor is used for according to the feedback letter
Breath obtains the shape information of the received laser being reflected back toward of sensor, continues in the high level of the shape information
Duration be greater than predetermined set when, be considered as and recognize the sensor abnormality.
6. control system according to claim 1, which is characterized in that the control system further includes power module, described
Power module connect with the laser light source and is used to power to the laser light source, and the power module is also and at the application
Device connection is managed, when the power module receives the closing control signal, is disconnected to the power supply of the laser light source.
7. control system according to claim 1, which is characterized in that the control system further include:
Signal generator, the signal generator are connect with the application processor；
After the signal generator receives the closing control signal, the prompt letter of the flight time component exception is issued
Breath.
8. control system according to claim 7, which is characterized in that when the signal generator receives predetermined operation,
The application processor stops issuing the closing control signal, and the laser light source reopens；Or
After the application processor issues the closing control signal scheduled duration, the application processor stops issuing the pass
Control signal is closed, and the laser light source reopens.
9. control system according to claim 7, which is characterized in that be more than in the number that the laser light source is continuously closed
When pre-determined number, the application processor continuously sends out the closing control signal.
10. a kind of terminal characterized by comprising
Flight time component；And
Control system described in claim 1 to 9 any one, the control system are connect with the flight time component.
11. a kind of control method of flight time component, which is characterized in that the flight time component includes laser light source and biography
Sensor, the control method include:
The feedback information of the sensor is received to identify whether the sensor is abnormal；And
When recognizing the sensor abnormality, the laser light source is closed.
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| CN201910229457.2A CN109904718B (en) | 2019-03-25 | 2019-03-25 | Control system and control method of time-of-flight assembly and terminal |
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| CN201910229457.2A CN109904718B (en) | 2019-03-25 | 2019-03-25 | Control system and control method of time-of-flight assembly and terminal |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113031790A (en) * | 2020-10-26 | 2021-06-25 | 友达光电股份有限公司 | Method for controlling laser, control system and input device |
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| CN109904718B (en) | 2020-09-04 |
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