CN107310477A - A kind of method and system for improving car-mounted display equipment safety in utilization - Google Patents
A kind of method and system for improving car-mounted display equipment safety in utilization Download PDFInfo
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- CN107310477A CN107310477A CN201710481974.XA CN201710481974A CN107310477A CN 107310477 A CN107310477 A CN 107310477A CN 201710481974 A CN201710481974 A CN 201710481974A CN 107310477 A CN107310477 A CN 107310477A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R1/00—Optical viewing arrangements; Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
- B60J1/00—Windows; Windscreens; Accessories therefor
- B60J1/18—Windows; Windscreens; Accessories therefor arranged at the vehicle rear
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F19/00—Advertising or display means not otherwise provided for
- G09F19/12—Advertising or display means not otherwise provided for using special optical effects
- G09F19/18—Advertising or display means not otherwise provided for using special optical effects involving the use of optical projection means, e.g. projection of images on clouds
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F21/00—Mobile visual advertising
- G09F21/04—Mobile visual advertising by land vehicles
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- Theoretical Computer Science (AREA)
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- Burglar Alarm Systems (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
Abstract
The present invention relates to a kind of method and system for improving car-mounted display equipment safety in utilization, it is characterised in that：Real-time or timing monitoring traveling state of vehicle and vehicle arrangement state, when vehicle is in the state of reversing or vehicle trunk are in and opened, close or stop the display work of car-mounted display equipment automatically.So that the light direct projection to avoid the equipment such as ray machine in vehicle, the influence that the safety to periphery pedestrian or driver is caused.
Description
Technical field
The present invention relates to a kind of vehicle intelligent system, specifically, a kind of side for improving car-mounted display equipment safety in utilization
Method and system.
Background technology
Car-mounted display equipment is more flexible compared to traditional rear window joint strip advertisement as a kind of Novel movable media, and it can be used
Projection, LED screen, liquid crystal display or liquid crystal display add the form of reflecting plate.When it is by the way of projection, by monoblock vehicle rear window (rear car
Window is generally mounted on back in-support carriage door) all it is changed into one piece of huge display screen, light is projected and is imaged on glass, is a kind of master
The mode of dynamic luminescence display, because in-car is provided with projecting apparatus, in order to which imaging effect is good, projector brightness is typically greater than
100lm, if the light of this high brightness shines directly into the eyes of people so no matter to pedestrian or to driving below
Driver might as well can all bring very high potential safety hazard.When it uses the form of liquid crystal display plus reflecting plate, its brightness may be more
Height, sometimes up to 1000cd/m2More than.The design of the car-mounted display equipment of both forms needs good to the progress of " luminous point " problem
Good design, to avoid above-mentioned potential safety hazard.
But reach safe mesh in some scenarios in order to which security consideration also needs to be controlled car-mounted display equipment
's.
Scene one：When car occupant uses back in-support carriage, the scene for opening back in-support carriage door is now necessarily involved, when vehicle-mounted
When display device is projecting apparatus, because in-car projecting apparatus is that light is directly invested to the rear car glass pane on back in-support carriage door, now
Passenger opens back in-support carriage door, then passenger can make directly facing projection light source, the projection light source of high brightness to the eyes of passenger
Into injury；When car-mounted display equipment is that LED screen, liquid crystal display or liquid crystal display add reflecting plate, passenger also can be directly facing highlighted aobvious
Eyes can equally be damaged by display screen, and this problem must be properly settled；
Scene two：Due to the reflection characteristic of light, when car-mounted display equipment is projecting apparatus, after in-car projector projects are arrived
The light of glass for vehicle window is beyond transmiting away and can be imaged in addition to car, and some light is inevitably reflected back in-car,
And when driver moves backward, driver sees glass for vehicle window backward, if now rear car glass pane still display image, then this can be serious
Driver's reversing is disturbed to judge, so as to cause traffic safety；When car-mounted display equipment is that liquid crystal display adds reflecting plate, reflecting plate is not yet
A part of light can be avoided reflecting in driver eye, this problem must also be properly settled.
The content of the invention
It is contemplated that overcoming drawbacks described above there is provided a kind of new media equipment, its light safety problem is needed by thorough
Consider, need to ensure that equipment its bright luminous point in normal work is not easily seen so as to shadow by the external world when designing except itself
The safety for ringing goers outside vehicle and driver is outer, for the above-mentioned inevitable two kinds of scenes of car operation traveling institute of aforementioned background art
(one kind is that passenger switch back in-support carriage is fetched and withdrawn baggage, and one kind is driver's reversing), the method that the solution of the present invention is provided can ensure
Equipment light safety.
The invention provides a kind of method for improving car-mounted display equipment safety in utilization, it is characterised in that：It is in real time or fixed
When monitoring traveling state of vehicle and vehicle arrangement state, when vehicle is in the state of reversing or vehicle trunk are in and opened, from
The dynamic projection work closed or stop car-mounted display equipment.
In addition, present invention also offers a kind of security system based on car-mounted display equipment, it is characterised in that：Including equipment
Control module, signal detection module, equipment display module；
Above-mentioned signal detection module, the situation of change of timing monitoring objective signal, when echo signal changes, will be wrapped
The signal of the situation of change containing equipment state, is sent to device control module；
The said equipment control module receives the signal of signal detection module, and equipment display mould is carried out to the signal received
The judgement that block should start or close, and according to judged result, control device display module opens or closes that (equipment is shown
Module can be used for the equipment such as control projector, LED screen, liquid crystal display or liquid crystal display plus reflecting plate and be closed and be opened)；
Wherein, above-mentioned echo signal is back in-support carriage signal and/or astern signal；
The above-mentioned signal comprising equipment state situation of change is that back in-support carriage open/is opened, back in-support carriage is closed, vehicle falls
Che Zhong, vehicle backing terminate；
Above-mentioned determination methods are：
When back in-support carriage open/ opening or vehicle backing in when, judged result be pass hull closure display module；
At the end of back in-support carriage closing or vehicle backing, judged result is opening equipment display module.
Further, a kind of security system based on car-mounted display equipment for providing of the present invention, also with it is such the characteristics of：
I.e., above-mentioned signal detection module includes signal judge module；
The above-mentioned signal comprising equipment state situation of change is generated by signal judge module.
Further, a kind of security system based on car-mounted display equipment for providing of the present invention, also with it is such the characteristics of：
I.e., above-mentioned back in-support carriage signal is triggered by the keying padlock or back in-support carriage open-close on-off of back in-support carriage lid；
The mode of the triggering can also for it is any may determine that or determines back in-support carriage opening or closure state signal or
The schemes such as equipment.
When back in-support carriage lid is opened and closed, above-mentioned back in-support carriage signal can change；The change can be level/electricity
Press the change of signal, or the change of current signal, can also be the folding change information transmitted by networks such as wifi
Mode.
Above-mentioned signal detection module is monitored after the situation of change, and the shape of back in-support carriage is judged by above-mentioned signal judge module
After state, the signal comprising equipment state situation of change is sent to device control module, then started by device control module
Or closing projector, LED screen, liquid crystal display or liquid crystal display add the multimedia equipments such as reflecting plate.
Further, a kind of security system based on car-mounted display equipment for providing of the present invention, also with it is such the characteristics of：
I.e., above-mentioned back in-support carriage signal is level (voltage) signal；
When back in-support carriage lid is opened, above-mentioned level signal is changed into level II by level I, when signal detection module monitoring
To during the change, above-mentioned signal judge module is changed into this feature of level II according to level I, obtain back in-support carriage open or
The judged result of opening；
When back in-support carriage lid is closed, above-mentioned level signal is changed into level I by level II, when signal detection module monitoring
To during the change, above-mentioned signal judge module is changed into this feature of level I according to level II, obtain back in-support carriage close or
The judged result of closing；
Wherein, above-mentioned level I is fixed level when vehicle back in-support carriage lid is closed；
Above-mentioned level II is fixed level when vehicle back in-support carriage lid is opened completely.
In general, it is low-voltage when trunk is in open mode, it is high voltage that trunk, which is in when closing, works as rear car
Railway carriage or compartment is during be closed into opening, the change that voltage should be reduced.
And when the compartment of opening is closed, then high voltage can be converted into from low-voltage, i.e., now voltage should rise
High change.
Further, a kind of security system based on car-mounted display equipment for providing of the present invention, also with it is such the characteristics of：
I.e., above-mentioned astern signal is triggered by reversing controlling switch/equipment or vehicle backing modulating signal；
The mode of the triggering can may determine that or determine the scheme that vehicle is being moved backward to be any.
When vehicle backing or completion reversing, above-mentioned astern signal can change；The change can be level/voltage letter
Number change, or the change of current signal, can also for pass through the networks such as wifi transmit reversing or reversing terminate
The mode of change information.
Above-mentioned signal detection module monitors after the situation of change that above-mentioned signal judge module judges the state of vehicle, and
The signal comprising equipment state situation of change is sent to device control module.
Further, a kind of security system based on car-mounted display equipment for providing of the present invention, also with it is such the characteristics of：
I.e., above-mentioned astern signal is level (voltage) signal；
When vehicle starts reversing, above-mentioned level signal starts transformation from level A to level B, when signal detection module prison
When measuring the change, above-mentioned signal judge module starts to change this feature according to level A to level B, obtains vehicle backing
Judged result；
When vehicle terminates reversing, above-mentioned level signal is changed into level A by level B, when signal detection module is monitored
During the change, above-mentioned signal judge module is changed into this feature of level A according to level B, obtains the judgement that vehicle backing terminates
As a result；
Wherein, level when above-mentioned level A is vehicle backing；
Above-mentioned level B is non-level when being state of rolling backward of vehicle.
In general, it is high voltage when vehicle is in state of rolling backward, is low-voltage when vehicle is in non-reversing, when vehicle is opened
When beginning to move backward, elevated change should occur for voltage.
And when vehicle completes to move backward, then low-voltage can be converted into from high voltage, i.e., now voltage should be reduced
Change.
Further, since, during vehicle backing, it may occur however that the process that the vehicle such as brake pauses, therefore in order to keep away
Exempt from the error judged, during reversing is judged whether, it is preferred to use the mode of multisection type reversing detection.
Further, a kind of security system based on car-mounted display equipment for providing of the present invention, also with it is such the characteristics of：
I.e., shown in comprising the following steps that：
Step 1: signal detection module timing is monitored to astern signal；
When signal detection module does not monitor any change, continue the monitoring of step one；
When signal detection module monitors that level A changes to level B, signal judge module is to sentence according to the situation of change
Disconnected vehicle is moved backward, and signal detection module transmits the signal to device control module；
Step 2: signal detection module continues to be monitored this signal timing, signal judge module is to the monitoring result
Carry out condition adjudgement；
When monitoring result is still level B, the result of condition adjudgement is：During reversing is carried out, continue the process of step 2；
When monitoring result is not level B or is level A, the result of condition adjudgement is：Reversing terminates, and continues step 3
Process；
Step 3: signal detection module shortens monitoring frequency, continuation is monitored to this signal timing, signal judge module
Condition adjudgement is carried out to the monitoring result；
When monitoring result is not still level B or is level A, the result of condition adjudgement is：Reversing terminates, and continues step
Four process；
When monitoring result is level B, the result of condition adjudgement is：During reversing is carried out, continue the process of step 2；
Step 4: signal detection module, extension monitoring frequency continues to be monitored this signal timing, signal judge module
Continue to carry out condition adjudgement to the monitoring result；
When monitoring result is not still level B or is level A, the result of condition adjudgement is：Reversing terminates, signal detection
Module transmits the signal to device control module, and continues the process of step one；
When monitoring result is level B, the result of condition adjudgement is：During reversing is carried out, continue the process of step 2.
In general, it is high voltage when vehicle is in state of rolling backward, is low-voltage when vehicle is in non-state of rolling backward, works as car
During the operation moved backward, elevated change should occur for voltage.
And after vehicle terminates reversing, then low-voltage can be converted into from high voltage, i.e., now voltage should be reduced
Change.
In addition, in such scheme, by with different monitoring frequencies, repeatedly being monitored to vehicle-state twice, with
This accurately judges whether vehicle completes the behavior of reversing, and security is ensured with this.
In addition, in actual application, it is different according to astern signal duty cycle square wave, repetition or set-up procedure can be passed through
Three and the flow of step 4 determine whether the state of vehicle.
Further, a kind of security system based on car-mounted display equipment for providing of the present invention, also with it is such the characteristics of：
I.e., monitoring frequency is as follows：
The monitoring frequency of step one is less than or equal to the monitoring frequency of step 2；
The monitoring frequency of step 2 is less than the monitoring frequency of step 3；
The monitoring frequency of step 4 is more than the monitoring frequency of step 3, less than the monitoring frequency of step 2.
Further, a kind of security system based on car-mounted display equipment for providing of the present invention, also with it is such the characteristics of：
I.e., electric circuit protection equipment is provided with the transmitting circuit of above-mentioned back in-support carriage signal；
And/or
Electric circuit protection equipment is provided with the transmitting circuit of above-mentioned astern signal.
The electric circuit protection equipment is that fuse etc. can cut off circuit of problems, and maintains other circuits to be normally carried out
Equipment.
The beneficial effect of invention
The present invention is by providing a kind of new media equipment, and its light safety problem needs to consider by thorough, except itself sets
Timing need ensure equipment in normal work its bright luminous point not by the external world be easily seen so as to influence goers outside vehicle with
The safety of driver is outer, and for the above-mentioned inevitable two kinds of scenes of car operation traveling institute of aforementioned background art, (one kind is passenger
Switch back in-support carriage, which is fetched, withdraws baggage, and one kind is driver's reversing), the method that the solution of the present invention is provided can ensure equipment light safety.
Brief description of the drawings
The operational flow diagram for the security system based on car-mounted display equipment that accompanying drawing 1, the present embodiment are related to；
The flow chart for the astern signal detection module that accompanying drawing 2, the present embodiment are related to.
Embodiment
As shown in figure 1, the car-mounted display equipment that the present embodiment is provided includes three modules：Device control module, signal inspection
Survey module, equipment display module.
Device control module is the core of car-mounted display equipment, and its one side is responsible for receiving the signal of signal detection module,
On the one hand it is responsible for that the detection signal received is carried out judging processing and the accordingly opening of control device display module and closing
State.
The signal condition change of signal detection module timing detection two paths of signals, when echo signal changes, will be wrapped
The signal of the situation of change containing equipment state, is sent to device control module；The two paths of signals be respectively back in-support carriage switching signal and
Astern signal.
Afterwards, device control module carries out the judgement that equipment display module should start or close to the signal received,
And according to judged result, control device display module is opened or closed.
Carrying out practically process and principle are as follows：
In the present embodiment, the vehicle of selection is conventional taxi, according to automobile circuit principle, back in-support carriage switching signal by
The padlock triggering of back in-support carriage door bottom, usually during back in-support carriage closed mode, its signal condition is high level 12V, and works as standby
It is reduced to low level 0V when railway carriage or compartment is opened.
In the example of the trunk, as long as when signal detection module to this road signal detection to the change by 12V to OV,
So think that back in-support carriage is opened, now information is uploaded to device control module, device control module by signal detection module
The information being opened according to the back in-support carriage, judges that display device should be closed, therefore, controls display to set by equipment display module
It is standby to close.
Hereafter, detection that is being timed to the signal or shortening the time is continued, and when signal detection is to by 0V to 12V's
During change, then think that back in-support carriage is closed, now this information is also uploaded to device control module by signal detection module, if
Standby control module judges that display device can be opened, therefore, passes through equipment display module according to the pent information of the back in-support carriage
Projector equipment is controlled to open.
In the present embodiment, the vehicle of selection is conventional taxi, also according to automobile circuit principle, and astern signal can be from
Intercepted on back-up lamp control signal wire, as shown in Fig. 2 usually astern signal is the cycle side for having certain dutycycle (such as 9/10)
Ripple, low level 0V status representative vehicles are not moved backward, and after first rising edge 12V is detected, then judge car
Moved backward, now this information is also uploaded to device control module by signal detection module, device control module according to
The information that the vehicle is being moved backward, judges that display device should be closed, therefore, controls display device to close by equipment display module
Close.
Afterwards, system this signal is periodically carried out state reading (consider system effectiveness, this time should not set too short,
As time interval may be set to 3s), if reading state for high level 12V, then state of rolling backward does not terminate；If reading state
During for low level OV, terminate due to may now move backward, then just shorten state and read interval (being such as set as 15ms), if
High level 12V so state of rolling backward is now read again to be not over yet, and continues to recover long interval of time state reading (such as 3s)；Such as
Fruit now reads low level 0V and so tentatively judges that state of rolling backward may terminate again, now, can slightly elongate reading state
Time interval (is such as set as 25ms), if now reading low level OV again, then then judge that reversing terminates, and now signal is examined
Survey module and this information is uploaded to device control module, device control module has completed the information of reversing according to the vehicle, sentenced
Disconnected display device can be opened, therefore, control display device to open by equipment display module.
In addition, as shown in figure 1, safety in order to protect this road signal deteching circuit, typically can also be in two paths of signals circuit
It is upper to concatenate a low current fuse respectively (such as：2A fuses), do not interfere with vehicle just in case damaging so as to ensure this circuit
Circuit safety.
Claims (10)
1. a kind of method for improving car-mounted display equipment safety in utilization, it is characterised in that：
Traveling state of vehicle and vehicle arrangement state are monitored in real time or regularly, are opened when vehicle is in reversing or vehicle trunk
In the state of, the automatic dispaly state closed or stop car-mounted display equipment.
2. a kind of security system based on car-mounted display equipment, it is characterised in that：Including device control module, signal detection mould
Block, equipment display module；
The signal detection module, the situation of change of timing monitoring objective signal, when echo signal changes, will be included and set
The signal of standby state change situation, is sent to device control module；
The device control module receives the signal of signal detection module, and should to the signal progress equipment display module received
When the judgement for starting or closing, and according to judged result, control device display module is opened or closed；
Wherein, the echo signal is back in-support carriage signal and/or astern signal；
The signal comprising equipment state situation of change is that back in-support carriage open/is opened, back in-support carriage is closed, vehicle backing
In, vehicle backing terminates；
The determination methods are：
When back in-support carriage open/ opening or vehicle backing in when, judged result be pass hull closure display module；
At the end of back in-support carriage closing or vehicle backing, judged result is opening equipment display module.
3. a kind of security system based on car-mounted display equipment as claimed in claim 2, it is characterised in that：
The signal detection module includes signal judge module；
The signal comprising equipment state situation of change is generated by signal judge module.
4. a kind of security system based on car-mounted display equipment as claimed in claim 3, it is characterised in that：
The back in-support carriage signal is triggered by the keying padlock or back in-support carriage open-close on-off of back in-support carriage lid；
When back in-support carriage lid is opened and closed, the back in-support carriage signal can change；
The signal detection module monitors after the situation of change that the signal judge module judges the state of back in-support carriage, and will
The signal comprising equipment state situation of change is sent to device control module.
5. a kind of security system based on car-mounted display equipment as claimed in claim 4, it is characterised in that：
The back in-support carriage signal is level signal；
When back in-support carriage lid is opened, the level signal is changed into level II by level I, when signal detection module monitors this
During change, the signal judge module is changed into this feature of level II according to level I, obtains back in-support carriage and opens or open
Judged result；
When back in-support carriage lid is closed, the level signal is changed into level I by level II, when signal detection module monitors this
During change, the signal judge module is changed into this feature of level I according to level II, obtains back in-support carriage and closes or close
Judged result；
Wherein, the level I is fixed level when vehicle back in-support carriage lid is closed；
The level II is fixed level when vehicle back in-support carriage lid is opened completely.
6. a kind of security system based on car-mounted display equipment as claimed in claim 3, it is characterised in that：
The astern signal is triggered by reversing controlling switch/equipment or vehicle backing modulating signal；
When vehicle backing or completion reversing, the astern signal can change；
The signal detection module monitors after the situation of change that the signal judge module judges the state of vehicle, and should
Signal comprising equipment state situation of change is sent to device control module.
7. a kind of security system based on car-mounted display equipment as claimed in claim 6, it is characterised in that：
The astern signal is level signal；
When vehicle starts reversing, the level signal starts transformation from level A to level B, when signal detection module is monitored
During the change, the signal judge module starts to change this feature according to level A to level B, obtains the judgement of vehicle backing
As a result；
When vehicle terminates reversing, the level signal is changed into level A by level B, when signal detection module monitors the change
During change, the signal judge module is changed into this feature of level A according to level B, obtains the judged result that vehicle backing terminates；
Wherein, the level when level A is vehicle backing；
The level B is non-level when being state of rolling backward of vehicle.
8. a kind of security system based on car-mounted display equipment as claimed in claim 7, it is characterised in that comprise the following steps that
It is shown：
Step 1: signal detection module timing is monitored to astern signal；
When signal detection module does not monitor any change, continue the monitoring of step one；
When signal detection module monitors that level A changes to level B, signal judge module is to judge car according to the situation of change
Moved backward, signal detection module transmits the signal to device control module；
Step 2: signal detection module continues to be monitored this signal timing, signal judge module is carried out to the monitoring result
Condition adjudgement；
When monitoring result is still level B, the result of condition adjudgement is：During reversing is carried out, continue the process of step 2；
When monitoring result is not level B or is level A, the result of condition adjudgement is：Reversing terminates, and continues the work of step 3
Sequence；
Step 3: signal detection module shortens monitoring frequency, continuation is monitored to this signal timing, and signal judge module is to this
Monitoring result carries out condition adjudgement；
When monitoring result is not still level B or is level A, the result of condition adjudgement is：Reversing terminates, and continues step 4
Process；
When monitoring result is level B, the result of condition adjudgement is：During reversing is carried out, continue the process of step 2；Step 4:
Signal detection module, extension monitoring frequency continues to be monitored this signal timing, and signal judge module continues to the monitoring knot
Fruit carries out condition adjudgement；
When monitoring result is not still level B or is level A, the result of condition adjudgement is：Reversing terminates, signal detection module
Device control module is transmitted the signal to, and continues the process of step one；
When monitoring result is level B, the result of condition adjudgement is：During reversing is carried out, continue the process of step 2.
9. a kind of security system based on car-mounted display equipment as claimed in claim 8, it is characterised in that：
Monitoring frequency is as follows：
The monitoring frequency of step one is less than or equal to the monitoring frequency of step 2；
The monitoring frequency of step 2 is less than the monitoring frequency of step 3；
The monitoring frequency of step 4 is more than the monitoring frequency of step 3, less than the monitoring frequency of step 2.
10. a kind of security system based on car-mounted display equipment as described in claim 2-9 is any, it is characterised in that：
In the rear electric circuit protection equipment is provided with for the transmitting circuit of railway carriage or compartment signal；
And/or
Electric circuit protection equipment is provided with the transmitting circuit of the astern signal.
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| CN201710481974.XA CN107310477B (en) | 2017-06-22 | 2017-06-22 | Method and system for improving use safety of vehicle-mounted display equipment |
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| CN201710481974.XA CN107310477B (en) | 2017-06-22 | 2017-06-22 | Method and system for improving use safety of vehicle-mounted display equipment |
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| CN107310477A true CN107310477A (en) | 2017-11-03 |
| CN107310477B CN107310477B (en) | 2020-05-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019127425A1 (en) * | 2017-12-29 | 2019-07-04 | 上海碧虎网络科技有限公司 | Automobile and liquid crystal display apparatus |
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| CN205853888U (en) * | 2016-08-08 | 2017-01-04 | 上海碧虎网络科技有限公司 | System thrown by a kind of car based on electrically controlled transparent screen |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019127425A1 (en) * | 2017-12-29 | 2019-07-04 | 上海碧虎网络科技有限公司 | Automobile and liquid crystal display apparatus |
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| CN107310477B (en) | 2020-05-08 |
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