CN102769452B - The control method of touch key-press, device and television set - Google Patents
The control method of touch key-press, device and television set Download PDFInfo
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- CN102769452B CN102769452B CN201210241310.3A CN201210241310A CN102769452B CN 102769452 B CN102769452 B CN 102769452B CN 201210241310 A CN201210241310 A CN 201210241310A CN 102769452 B CN102769452 B CN 102769452B
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Abstract
The present invention discloses the control method of a kind of touch key-press, and the method comprises the following steps: when the sampled data in photo cell changes, and reads described sampled data and compares；Judge whether comparative result is that the changing value of an only photo cell sampled data is more than preset changing value；If being greater than preset changing value, then perform the keypress function that described photo cell is corresponding.Invention additionally discloses controlling device and including the television set controlling device of this touch key-press of a kind of touch key-press.The present invention is by monitoring the change of sampled data in each photo cell and the sampled data changed being compared, and when the changing value that comparative result is an only photo cell sampled data is more than preset changing value, the method performing keypress function corresponding to this photo cell, there is raising control equipment touch key-press stability and the beneficial effect of accuracy, reduce production cost, improve Consumer's Experience.
Description
Technical field
The present invention relates to consumer electronics technical field, particularly relate to the control method of a kind of touch key-press
, device and television set.
Background technology
At present, the touch key-press employed in touch key-press television set that market is sold, it is mostly electricity
Appearance formula touch key-press, also has and uses resistive touch button；Two kinds of touch key-presss all use solely
Vertical professional IC(Integrated Circuit, integrated circuit) realize touch function, its
Basic operation principle is: sent to by signal scanning the magnitude of voltage that is converted into button corresponding
The MCU(Microprogrammed Control Unit of system for TV set, microprogram control unit
)；Or, by the way of communication, realize the transmission of push button signalling.
This method by using independent specialized function IC to realize touch function of prior art, needs
Additionally to increase higher production cost；And the reliability of capacitance type touch key and stability are very
It is easily subject to the impact of structural deformation and variations in temperature, time serious, even results in the mistake of touch key-press
Unrest or inefficacy；And resistive touch button easily carries electrostatic or is damaged by static electricity because of it, seldom
It is used.
Summary of the invention
The main object of the present invention is to provide the control method of a kind of touch key-press, device and television set,
Aim to solve the problem that conventional display apparatus uses the problem sensing IC and cause touch key-press entanglement or inefficacy
, reduce cost.
The invention discloses the control method of a kind of touch key-press, comprise the following steps:
Judge whether the sampled data in each photo cell changes；
The most then read described sampled data and compare；
Judge whether comparative result is that the changing value of an only photo cell sampled data is more than preset change
Change value；
If being greater than preset changing value, then perform the keypress function that described photo cell is corresponding.
Preferably, described judge that whether comparative result is the change of an only photo cell sampled data
Value further comprises the steps of: more than after the step of preset changing value
If it is not, then judge that whether described comparative result is the change of all described photo cell sampled datas
Value is all in the range of preset distortion；
If all in the range of preset distortion, then perform environment sensitization function.
If not all in the range of preset distortion, then showing that operation is invalid.
Preferably, the step whether described sampled data judged in each photo cell changes
Further comprise the steps of: before
Monitor the sampled data in each described photo cell.
Preferably, described sampled data is the corresponding voltage value that luminous flux is 0 of described photo cell output
Signal.
Invention additionally discloses the control device of a kind of touch key-press, including:
Data variation identification module, for judging whether the sampled data in each photo cell becomes
Change；
Sampled data comparison module, changes for the sampled data in described each photo cell
Time, read described sampled data and compare；
First result identification module, is used for judging whether comparative result is an only photo cell sampling
The changing value of data is more than preset changing value；
Key function, in the change that comparative result is an only photo cell sampled data
When value is more than preset changing value, perform the keypress function that described photo cell is corresponding.
Preferably, the control device of described touch key-press also includes:
Second result identification module, for not being an only photo cell sampled data at comparative result
Changing value more than preset changing value time, it is judged that whether described comparative result is all described light sensations
The changing value of unit sampling data is all in the range of preset distortion；
Environment illuminant module, being used at described comparative result is all described photo cell sampled datas
When changing value is all in the range of preset distortion, perform environment sensitization function；
Display module, for described comparative result neither the change of an only photo cell sampled data
Change value be more than preset changing value, be not the changing value of all described photo cell sampled datas all
Time in the range of preset distortion, display operation is invalid.
Preferably, the control device of described touch key-press also includes:
Sampled data monitoring modular, for monitoring the sampled data in each described photo cell.
Preferably, described sampled data is the corresponding voltage value that luminous flux is 0 of described photo cell output
Signal.
Invention additionally discloses a kind of television set, including the control device of described touch key-press；Specifically
, including:
Data variation identification module, for judging whether the sampled data in each photo cell becomes
Change；
Sampled data comparison module, changes for the sampled data in described each photo cell
Time, read described sampled data and compare；
First result identification module, is used for judging whether comparative result is an only photo cell sampling
The changing value of data is more than preset changing value；
Key function, in the change that comparative result is an only photo cell sampled data
When value is more than preset changing value, perform the keypress function that described photo cell is corresponding.
Preferably, the control device of described touch key-press also includes:
Second result identification module, for not being an only photo cell sampled data at comparative result
Changing value more than preset changing value time, it is judged that whether described comparative result is all described light sensations
The changing value of unit sampling data is all in the range of preset distortion；
Environment illuminant module, being used at described comparative result is all described photo cell sampled datas
When changing value is all in the range of preset distortion, perform environment sensitization function；
Display module, for described comparative result neither the change of an only photo cell sampled data
Change value be more than preset changing value, be not the changing value of all described photo cell sampled datas all
Time in the range of preset distortion, display operation is invalid.
Preferably, the control device of described touch key-press also includes:
Sampled data monitoring modular, for monitoring the sampled data in each described photo cell.
Preferably, described sampled data is the corresponding voltage value that luminous flux is 0 of described photo cell output
Signal.
The present invention is by the change monitoring sampled data in each photo cell the sampling that will change
Data compare, and at the changing value that comparative result is an only photo cell sampled data
During more than preset changing value, the method performing keypress function corresponding to this photo cell, have and carry
High display device touches
Button stability and the beneficial effect of accuracy, reduce production cost, improve Consumer's Experience
。
Accompanying drawing explanation
Fig. 1 is the control method concrete application system block diagram of inventive touch button；
Fig. 2 is the control method first embodiment schematic flow sheet of inventive touch button；
Fig. 3 is control method the second embodiment schematic flow sheet of inventive touch button；
Fig. 4 is control method the 3rd embodiment schematic flow sheet of inventive touch button；
Fig. 5 is the control device first embodiment structural representation of inventive touch button；
Fig. 6 is control device the second example structure schematic diagram of inventive touch button；
Fig. 7 is control device the 3rd example structure schematic diagram of inventive touch button；
Fig. 8 is television set one example structure schematic diagram of the present invention.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, do referring to the drawings into one
Step explanation.
Detailed description of the invention
Technical scheme is further illustrated below in conjunction with Figure of description and specific embodiment.Should
Working as understanding, specific embodiment described herein, only in order to explain the present invention, is not used to limit
Determine the present invention.
It is the control method concrete application system block diagram of inventive touch button with reference to Fig. 1, Fig. 1；Such as figure
Shown in 1, the control system that the control method of inventive touch button is applied mainly includes light sensation mould
Block, MCU module and control module.Light sensation module is to realize inventive feature module, the present invention
Described light sensation module is by the photo cell structure at least provided with two with independent light sensation function
Becoming, described photo cell is made up of light sensation components and parts, and concrete light sensation components and parts are in the present invention
Do not limit, the light sensation components and parts of technique effect of the present invention can be reached.Described light sensation
Module mainly has two effects in system of the present invention, and one is the feature that light sensitive device is traditional
Effect, i.e. experiences ambient light and changes the backlight illumination change of control equipment with the change of ambient light
Change；Another is light sensation button effect of the present invention.Each photo cell in light sensation module
The luminous flux collected is converted into the signal of telecommunication and is received by system MCU；System MCU is by N number of
The signal of telecommunication that photo cell exports respectively is identified, it is judged that the hits in each photo cell
According to whether changing.
It is the control method first embodiment schematic flow sheet of inventive touch button with reference to Fig. 2, Fig. 2.
As
Shown in Fig. 2, the control method of inventive touch button comprises the following steps:
When step S01, sampled data in photo cell change, read described sampled data also
Compare；
If system MCU judges that the signal of telecommunication that the most N number of photo cell of sampled data exports there occurs change, then
Read the concrete of this sampled data to change, and each photo cell changed is exported
Sampled data compares, and carries out follow-up concrete operations according to the comparative result of sampled data.
Step S02, judge that whether comparative result is that the changing value of an only photo cell sampled data is big
In preset changing value；The most then perform step S03；If it is not, then perform step S04；
Step S03, perform the keypress function that described photo cell is corresponding；
Step S04, according to concrete comparative result, carry out corresponding operating.
The shadow zone of painting produced when operating button in order to avoid user covers caused by adjacent button
System MCU erroneous judgement, system MCU judges in N number of photo cell, only has some photo cell
Collecting the corresponding voltage value signal that luminous flux is 0 is effective button trigger command, the most only one
The changing value of individual photo cell sampled data exists with the changing value of other photo cell sampled datas
Notable difference, when this notable difference is more than the setting pre-set, then performs this photo cell
Corresponding keypress function operation；If comparative result is not an only photo cell sampled data
Changing value is more than preset changing value, then operate accordingly according to concrete comparative result；Ratio
As, when the changing value of each photo cell sampled data is more or less the same, enter according to concrete difference
The corresponding ambient light regulatory function of row etc..
Whether the present embodiment changes by judging the sampled data in each photo cell and will occur
The sampled data of change compares, and is an only photo cell hits at comparative result
According to changing value more than preset changing value time, perform the side of keypress function corresponding to this photo cell
Method, has raising display device touch key-press stability and the beneficial effect of accuracy, it is to avoid pass
System display device is because using the method for sensing IC touch key-press by structural deformation and the shadow of ambient temperature
The touch key-press entanglement rung and cause or the problem of inefficacy, also reduce production cost simultaneously, carry
Rise Consumer's Experience.
It is control method the second embodiment schematic flow sheet of inventive touch button with reference to Fig. 3, Fig. 3；
Control method second embodiment of inventive touch button with the difference of first embodiment is: only increase
Step S10, step S11 and step S12 are added；The present embodiment only to step S10, step S11 and
Step S12 is described specifically, and other steps involved by the control method of inventive touch button please
With reference to the specific descriptions of first embodiment, do not repeat them here.
As it is shown on figure 3, the control method of inventive touch button in step S03, judge that comparative result is
No be an only photo cell sampled data changing value more than preset changing value step after
Further comprise the steps of:
Step S10, judge that whether described comparative result is the change of all described photo cell sampled datas
Value is all in the range of preset distortion；The most then perform step S11；If it is not, then perform step S
12；
Step S11, execution environment sensitization function.
Judging that comparative result is not that the changing value of an only photo cell sampled data is more than preset change
During change value, then judge that the signal of telecommunication that N number of photo cell that system MCU collects exports is the most identical
Or close, the luminous flux of the most N number of photo cell sampling is same or like is the most all to pre-set
In deviation range, then system carries out corresponding ring according to the luminous flux data difference of this N number of photo cell
Border light regulatory function；Such as, if current environment light is dark, then system is according to this N number of photo cell
The data difference of the luminous flux of output, suitably lightens the backlight illumination of display device；If it is current
Ambient light is brighter, then the data difference of the luminous flux that system exports according to this N number of photo cell, will be aobvious
Show that the backlight illumination of equipment suitably dims, cosily use this display device being easy to user
Meanwhile, the power consumption of display device has been saved the most to a certain extent.
Step S12, display operation invalid.
If judge the comparative result of the changing value of above-mentioned N number of photo cell sampled data be not all preset partially
In the range of difference, i.e. comparative result is not the most the diversity change of a certain photo cell data, the most not
Being the close change of all photo cell data, concrete manifestation form is: collect more than one
The magnitude of voltage that luminous flux is 0 of individual light sensation module produces, then system MCU judges that this operation is invalid
, and remind user " it is invalid to operate " by display device.
The present embodiment is by judging that changing value that comparative result is all photo cell sampled datas is all in advance
When putting in deviation range, the method performing environment sensitization function, have and utilize light sensitive device to realize
While touch key-press controls, do not affect having of the traditional environment sensitization function use of light sensitive device
Benefit effect；And when operating invalid, carried out showing to remind user, there is hommization
With intelligentized beneficial effect.
It is control method the 3rd embodiment schematic flow sheet of inventive touch button with reference to Fig. 4, Fig. 4；
Control method the 3rd embodiment of inventive touch button is only to increase with the difference of the second embodiment
Add step S05；Step S05 is only described specifically by the present embodiment, inventive touch button
Other steps involved by control method refer to the specific descriptions of above-mentioned related embodiment, at this
Repeat no more.
As shown in Figure 4, the control method of inventive touch button in step S01, judge each light sensation list
Unit
In the step that whether changes of sampled data before further comprise the steps of:
Step S05, the sampled data monitored in each described photo cell.
With reference to the control method concrete application system block diagram of the inventive touch button shown in Fig. 1, MCU mould
Block is the nucleus module of system of the present invention, and each photo cell in light sensation module is independent
Connecting the GPIO(General Purpose Input/Output of MCU, universal input exports)
Mouthful, and the GPIO mouth connected has the function of voltage sample, i.e. AD(Analog-Digit
Al, simulation numeral) sampling functions.MCU is connected by the GPIO mouth monitoring of AD sampling functions
Photo cell also carries out function differentiation according to Monitoring Data, further according to differentiating that result performs corresponding behaviour
Make.
The method that the sampled data of each photo cell is monitored by the present embodiment, be system follow-up enter
The important prerequisite that row function differentiates.
It is the control device first embodiment structural representation of inventive touch button with reference to Fig. 5, Fig. 5；
As it is shown in figure 5, the control device of inventive touch button specifically includes:
Data variation identification module 01, for judging whether the sampled data in each photo cell occurs
Change；
With reference to the control method concrete application system block diagram of Fig. 1 inventive touch button, inventive touch is pressed
The control system that the control method of key is applied mainly includes light sensation module, MCU module and display mould
Block.Light sensation module is to realize inventive feature module, and light sensation module of the present invention is by extremely
Arrange two light sensation functional units with independent light sensation function less to constitute, described light sensation
Module has two effects in system of the present invention, and one is the characteristic action that light sensitive device is traditional
, i.e. experience ambient light and change the backlight illumination change of display device with the change of ambient light；
Another is light sensation button effect of the present invention.Each photo cell in light sensation module will be adopted
Collect to luminous flux be converted into the signal of telecommunication and received by system MCU；The data variation of system MCU is known
The signal of telecommunication that N number of photo cell is exported by other module 01 respectively is identified, it is judged that each light sensation list
Whether the sampled data in unit changes.
Sampled data comparison module 02, changes for the sampling data transmitting in described each photo cell
During change, read described sampled data and compare；
When the sampled data during data variation identification module 01 judges each photo cell changes,
Sampled data comparison module 02 reads the concrete change of these employing data, and each by change
The sampled data that individual photo cell is exported compares, and enters according to the comparative result of sampled data
The concrete operations that row is follow-up.
First result identification module 03, is used for judging whether comparative result is that only a photo cell is adopted
The changing value of sample data is more than preset changing value；
Key function 04, in the change that comparative result is an only photo cell sampled data
When change value is more than preset changing value, perform the keypress function that described photo cell is corresponding.
The shadow zone of painting produced when operating button in order to avoid user covers caused by adjacent button
Erroneous judgement, the first result identification module 03 judges in N number of photo cell, only has some light sensation
It is effective button trigger command that unit collects the corresponding voltage value signal that luminous flux is 0, the most only
There are the changing value of a photo cell sampled data and the changing value of other photo cell sampled datas
There is notable difference, when this notable difference is more than the setting pre-set, key function
04 performs the keypress function operation that this photo cell is corresponding；If the first result identification module 03 compares
Result is not that the changing value of an only photo cell sampled data is more than preset changing value, then root
Operate accordingly according to concrete comparative result.
Whether the present embodiment changes by judging the sampled data in each photo cell and will occur
The sampled data of change compares, and is an only photo cell hits at comparative result
According to changing value more than preset changing value time, perform the keypress function that this photo cell is corresponding, tool
It is improved display device touch key-press stability and the beneficial effect of accuracy, it is to avoid tradition display
Equipment is affected because using the method for sensing IC touch key-press by structural deformation and ambient temperature and is led
The touch key-press entanglement caused or the problem of inefficacy, also reduce production cost simultaneously, improve use
Family is experienced.
It is control device the second example structure schematic diagram of inventive touch button with reference to Fig. 6, Fig. 6；
Control device second embodiment of inventive touch button with the difference of first embodiment is: increase
Second result identification module 05, environment illuminant module 06 and display module 07；The present embodiment is only
Second result identification module 05, environment illuminant module 06 and display module 07 are described specifically,
Other modules involved by device that control of inventive touch button refer to each related embodiment
Specifically describe, do not repeat them here.
As shown in Figure 6, the control device of inventive touch button also includes:
Second result identification module 05, for not being an only photo cell hits at comparative result
According to changing value more than preset changing value time, it is judged that whether described comparative result is all described light
The changing value of sense unit sampling data is all in the range of preset distortion；
Environment illuminant module 06, being used at described comparative result is all described photo cell sampled datas
Changing value all in the range of preset distortion time, perform environment sensitization function.
Judge that comparative result is not an only photo cell sampled data at the first result identification module 03
's
When changing value is more than preset changing value, the second result identification module 05 judges what system MCU collected
The signal of telecommunication of N number of photo cell output is the most same or like, the sampling of the most N number of photo cell
Luminous flux is same or like i.e. all in the deviation range pre-set, then environment illuminant module 06
Luminous flux data difference according to this N number of photo cell carries out corresponding ambient light regulatory function；Such as
If current environment light is dark, the light that environment illuminant module 06 exports according to this N number of photo cell leads to
The data difference of amount, suitably lightens the brightness of display device；If current environment light is brighter, then
The data difference of the luminous flux that environment illuminant module 06 exports according to this N number of photo cell, sets display
Standby brightness suitably dims, and is being easy to while user cosily uses this display device, also
Save the power consumption of display device to a certain extent.
Display module 07, for described comparative result neither an only photo cell sampled data
Changing value is more than preset changing value, is not the changing value of all described photo cell sampled datas
Time all in the range of preset distortion, display operation is invalid.
If the second result identification module 05 judges the comparison of the changing value of above-mentioned N number of photo cell sampled data
Result is not all in the range of preset distortion, i.e. comparative result is not the most the first result identification module
The diversity change of the 03 a certain photo cell data judged, is not the second result identification module
The close change of the 05 all photo cell data judged, concrete manifestation form is: collect
The magnitude of voltage that luminous flux is 0 of more than one light sensation module produces, then system MCU judges that this is grasped
It is invalid to make, and shows " it is invalid to operate " by display module 07, in order to remind user.
The present embodiment is by judging that changing value that comparative result is all photo cell sampled datas is all in advance
When putting in deviation range, perform environment sensitization function, have utilize light sensitive device realize touching by
While key control, do not affect the beneficial effect that the traditional environment sensitization function of light sensitive device uses
；And when operating invalid, carried out showing that to remind user there is hommization and intelligence
The beneficial effect changed.
It is control device the 3rd example structure schematic diagram of inventive touch button with reference to Fig. 7, Fig. 7；
Control device the 3rd embodiment of inventive touch button is only to increase with the difference of the second embodiment
Add sampled data monitoring modular 08；Sampled data monitoring modular 08 is only made specifically by the present embodiment
Describing, other modules involved by device that control of inventive touch button refer to above-mentioned relevant
The specific descriptions of embodiment, do not repeat them here.
As it is shown in fig. 7, the control device of inventive touch button also includes:
Sampled data monitoring modular 08, for monitoring the sampled data in each described photo cell.
With reference to the control method concrete application system block diagram of the inventive touch button shown in Fig. 1, MCU mould
Block is the nucleus module of institute of the present invention application system, and each photo cell in light sensation module is only
The vertical GPIO(General Purpose Input/Output connecting MCU, universal input exports
) mouth, and the GPIO mouth connected has the function of voltage sample, i.e. AD(Analog-Dig
Ital, simulation numeral) sampling functions.Sampled data monitoring modular 08 in MCU is sampled by AD
The GPIO mouth of function monitors the photo cell connected, subsequent touch button control its of device
He carries out function differentiation, then root according to the monitoring result of sampled data monitoring modular 08 at functional module
According to differentiating that result performs corresponding operating.
The sampled data of each photo cell is monitored by the present embodiment sampled data monitoring modular, is
The follow-up important prerequisite carrying out function differentiation of system.
It is television set one example structure schematic diagram of the present invention with reference to Fig. 8, Fig. 8.As shown in Figure 8, this
Bright television set includes the control device 100 of touch key-press, about the control device 100 of touch key-press
Specific descriptions refer to the specific descriptions of above-mentioned related embodiment, do not repeat them here.
Television set of the present invention, including the control device of described touch key-press, by monitoring each light sensation list
The change of sampled data the sampled data changed is compared in unit, and comparing knot
Fruit be an only photo cell sampled data changing value more than preset changing value time, perform this
The method of the keypress function that photo cell is corresponding, have improve television display apparatus touch by
Key stability and the beneficial effect of accuracy, reduce production cost, improve Consumer's Experience.
The foregoing is only the preferred embodiments of the present invention, not thereby limit its scope of the claims, every
Utilize equivalent structure or equivalence flow process conversion that description of the invention and accompanying drawing content made, directly
Or indirectly it is used in other relevant technical fields, the most in like manner it is included in the patent protection of the present invention
In the range of.
Claims (7)
1. the control method of a touch key-press, it is characterised in that comprise the following steps:
Judge whether the sampled data in each photo cell changes；
The most then read described sampled data and compare；
Judge whether comparative result is that the changing value of an only photo cell sampled data is more than preset change
Value；
The most then perform the keypress function that described photo cell is corresponding；
If it is not, then judge that whether described comparative result is the changing value of all described photo cell sampled datas
All in the range of preset distortion；
If all in the range of preset distortion, then regulate the backlight illumination of display device, perform environment photosensitive
Function；
If not all in the range of preset distortion, then showing that operation is invalid.
2. the control method of touch key-press as claimed in claim 1, it is characterised in that described judgement is every
Further comprise the steps of: before the step whether sampled data in individual photo cell changes
Monitor the sampled data in each described photo cell.
3. the control method of touch key-press as claimed in claim 1, it is characterised in that described hits
According to the corresponding voltage value signal that the luminous flux exported for described photo cell is 0.
4. the control device of a touch key-press, it is characterised in that including:
Data variation identification module, for judging whether the sampled data in each photo cell changes；
Sampled data comparison module, when the sampled data in described each photo cell changes,
Read described sampled data and compare；
First result identification module, is used for judging that whether comparative result is an only photo cell hits
According to changing value more than preset changing value；
Key function, at the changing value that comparative result is an only photo cell sampled data
During more than preset changing value, perform the keypress function that described photo cell is corresponding；
Second result identification module, for not being an only photo cell sampled data at comparative result
When changing value is more than preset changing value, it is judged that whether described comparative result is the sampling of all described photo cell
The changing value of data is all in the range of preset distortion；
Environment illuminant module, in the change that described comparative result is all described photo cell sampled datas
When change value is all in the range of preset distortion, the brightness of regulation display device, perform environment sensitization function；
Display module, for described comparative result neither the change of an only photo cell sampled data
Value more than preset changing value, be not all described photo cell sampled datas changing value all preset partially
Time in the range of difference, display operation is invalid.
5. the control device of touch key-press as claimed in claim 4, it is characterised in that also include:
Sampled data monitoring modular, for monitoring the sampled data in each described photo cell.
6. the control device of touch key-press as claimed in claim 4, it is characterised in that described hits
According to the corresponding voltage value signal that the luminous flux exported for described photo cell is 0.
7. a television set, it is characterised in that include the touch key-press described in any one of claim 4 to 6
Control device.
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| CN201210241310.3A CN102769452B (en) | 2012-07-12 | 2012-07-12 | The control method of touch key-press, device and television set |
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| CN108417168A (en) * | 2018-02-07 | 2018-08-17 | 深圳市可可卓科科技有限公司 | The method and car-mounted terminal taken over seamlessly based on ray machine auto brightness |
| CN110350933A (en) * | 2019-06-14 | 2019-10-18 | Oppo广东移动通信有限公司 | Kato and electronic equipment |
| CN110597076A (en) * | 2019-09-24 | 2019-12-20 | 广东美的厨房电器制造有限公司 | Trigger device, control method, control device and household appliance |
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