CN105187124B - A kind of information transferring method and device based on backlight modulation - Google Patents
A kind of information transferring method and device based on backlight modulation Download PDFInfo
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Abstract
The present invention provides a kind of information transferring method and device based on backlight modulation.Method includes：On the premise of the backlight duty cycle current based on the display device is constant, according to transmission information generation backlight control signal to be transmitted；According to the backlight control signal, control the backlight flicker mode of the display device so that the display device according to the backlight flicker mode into line flicker.The present invention is by controlling display device backlight flicker mode to realize the transmission of transmission information, the content of pixel in display device need not be changed, i.e. the present invention will not change the picture material that display device is shown, it ensure that the display effect of display device, and the present invention realizes that information is transmitted using display device backlight flicker mode, without handling picture signal, technology is realized simple.
Description
Technical field
The present invention relates to technical field of visible light communication, are passed more specifically to a kind of information based on backlight modulation
Transmission method and device.
Background technology
With the rapid development of visible light communication technology, realize that information transmission has become current based on visible light communication technology
The development trend of the communications field.
Specifically in imaging communication technical field, the prior art includes a kind of traditional implicit imaging communication method, leads to
It crosses transmission modulates information to be transmitted into picture signal, is sent out by changing the content of each pixel to change display device
The optical signal gone out realizes the transmission of information with this.
However the present inventor has found that traditional is hidden after studying above-mentioned traditional implicit imaging communication method
Formula imaging communication method needs the content for changing pixel that could realize that information is transmitted, and the content of pixel directly decides that display is set
The standby picture material finally shown, then traditional implicit imaging communication method will necessarily influence the display of the picture material of display
Effect.And if although traditional implicit imaging communication method will accomplish to change picture material but not discovered by user's human eye
It arrives, then needs to handle substantial amounts of picture signal, processing complexity is high, complicated technology realization.
The content of the invention
In view of this, the present invention provides a kind of information transferring method and device based on backlight modulation, to solve existing skill
Traditional implicit imaging communication method can influence the display effect for the picture material that display device is shown and need to big in art
The problem of picture signal of amount is handled, and processing complexity is high, complicated technology realization.Technical solution is as follows：
Based on an aspect of of the present present invention, the present invention provides a kind of information transferring method based on backlight modulation, applied to aobvious
Show equipment, the described method includes：
On the premise of the backlight duty cycle current based on the display device is constant, according to transmission information life to be transmitted
Into backlight control signal；
According to the backlight control signal, the backlight flicker mode of the display device is controlled, so that the display is set
It is standby according to the backlight flicker mode into line flicker.
Preferably, the transmission information to be transmitted is set of number information sequence data；
It is described to include according to transmission information generation backlight control signal to be transmitted：
According to default control condition, the control subsignal to be transmitted for transmitting each data in information is determined；
The control subsignal to be transmitted for transmitting each data in information that will be determined, according to described to be transmitted
The order of information middle position data is transmitted into row set, generates backlight control signal.
Preferably, the control condition is used to represent the light on and off duration of the backlight of the display device and position data
Correspondence.
Based on another aspect of the present invention, the present invention provides a kind of information transferring method based on backlight modulation, is applied to
Imaging device, the described method includes：
The picture material that continuous acquisition display device is shown, and read the backlight illumination of the picture material gathered every time；
The backlight illumination of picture material according to acquisition determines the backlight flicker mode of the display device；
According to definite backlight flicker mode, the transmission information that the display device is sent is determined.
Preferably, the transmission information is set of number information sequence data；；
The backlight flicker mode that the foundation determines determines that the transport packet that the display device is sent includes：
Determine that the display device flickers the corresponding backlight light on and off time each time；
According to default control condition, it is corresponding to determine that the display device flickers the corresponding backlight light on and off time each time
Position data；
By all definite successively data acquisition systems, the transmission information that the display device is sent is determined.
Based on another aspect of the invention, the present invention provides a kind of information carrying means based on backlight modulation, including：
Backlight control signal generation unit, on the premise of the backlight duty cycle based on the display device is constant,
According to transmission information generation backlight control signal to be transmitted；
Backlight flicker mode control unit, for according to the backlight control signal, controlling the backlight of the display device
Flashing mode so that the display device according to the backlight flicker mode into line flicker.
Preferably, the transmission information to be transmitted is set of number information sequence data；
The backlight flicker mode control unit includes：
Signal determination subelement, for according to default control condition, determining each in the transmission information to be transmitted
The control subsignal of position data；
Signal generation subelement, for control of each data in the transmission information to be transmitted determined to be believed
Number, according to the order of the transmission information middle position data to be transmitted into row set, generate backlight control signal.
Preferably, the control condition is used to represent that the light on and off time of the backlight of the display device is corresponding with position data
Relation.
Based on another aspect of the invention, the present invention provides a kind of information carrying means based on backlight modulation, including：
Reading unit is gathered, for the picture material that continuous acquisition display device is shown, and reads the image gathered every time
The backlight illumination of content；
First determination unit for the backlight illumination of the picture material according to acquisition, determines the backlight of the display device
Flashing mode；
Second determination unit, for according to definite backlight flicker mode, determining the transmission letter that the display device is sent
Breath.
Preferably, the transmission information is set of number information sequence data；
Second determination unit includes：
First determination subelement, for determining that the display device flickers the corresponding backlight light on and off time each time；
Second determination subelement, for according to default control condition, determining that the display device flickers correspondence each time
Backlight light on and off time corresponding position data；
3rd determination subelement for all data acquisition systems that will be determined successively, determines what the display device was sent
Transmit information.
Using the above-mentioned technical proposal of the present invention, the information transferring method provided by the invention based on backlight modulation, in base
On the premise of the backlight duty cycle of display device is constant, according to transmission information generation backlight control signal to be transmitted, and then
Foundation backlight control signal controls the backlight flicker mode of the display device, so that the display device is according to the back of the body
Optical flare mode is into line flicker.It is therefore of the invention by the way that display device backlight flicker mode is controlled to realize the transmission of transmission information,
The content of pixel in display device need not be changed, i.e., the present invention will not change the picture material that display device is shown, ensure that aobvious
Show the display effect of equipment, and the present invention realizes that information is transmitted using display device backlight flicker mode, without to picture signal
It is handled, technology is realized simple.
Meanwhile the present invention is on the premise of the backlight duty cycle based on display device is constant, that is, is ensureing display device
On the basis of original display brightness is constant, realize that information is transmitted using display device backlight flicker mode, therefore the present invention realizes
A kind of implicit visual light imaging communication means compared with human eye.
Description of the drawings
It in order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention, for those of ordinary skill in the art, without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is a kind of flow chart of the information transferring method based on backlight modulation provided by the invention；
Fig. 2 is a kind of another flow chart of the information transferring method based on backlight modulation provided by the invention；
Fig. 3 is a kind of another flow chart of the information transferring method based on backlight modulation provided by the invention；
Fig. 4 is a kind of another flow chart of the information transferring method based on backlight modulation provided by the invention；
Fig. 5 is a kind of structure diagram of the information carrying means based on backlight modulation provided by the invention；
Fig. 6 is the structure diagram of backlight flicker mode control unit in the present invention；
Fig. 7 is a kind of another structure diagram of the information carrying means based on backlight modulation provided by the invention；
Fig. 8 is the structure diagram of the second determination unit in the present invention.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work
Embodiment belongs to the scope of protection of the invention.
Before specific introduction implementation method of the present invention, inventor is first simply situated between to the related background art of the present invention
It continues.
Backlight is a kind of lighting system, and backlight, which is shown, refers to luminescent device of the display device by itself, makes display device
Display screen send backlight, to clearly display picture material.Usual display device can be specially liquid crystal display, then
By taking liquid crystal display as an example, backlight is sent by the luminescent device of itself, is radiated at liquid crystal display to even back
In the liquid crystal layer back side so that the picture material that liquid crystal layer is shown clearly displays out.
Wherein, the liquid crystal layer in liquid crystal display is for changing RGB (RGB) three kinds of colors in units of pixel
Optical signal passability, the filtering to backlight signal is realized, so as to show different picture materials.It is, liquid crystal layer
Decide the picture material that liquid crystal display is shown to the filtering of backlight signal.
It is not strong by the backlight of liquid crystal display control backlight for the backlight illumination of liquid crystal display
What degree was realized, but realized by controlling the duty cycle of backlight flicker.The duty cycle of backlight flicker refers to backlight lightening and the back of the body
The ratio for the duration that light extinguishes.In practical applications, when backlight lightening duration with respect to backlight extinguish it is lasting when
Between it is longer when, the backlight illumination that liquid crystal display is totally presented is higher, conversely, the duration of backlight lightening puts out with respect to backlight
The duration gone out, the backlight illumination that liquid crystal display is totally presented was lower more in short-term.Herein it should also be noted that, for
This high speed scintillation mode of backlight, human eye vision are that None- identified distinguishes.Therefore, the duty cycle of backlight flicker determines
The backlight illumination of liquid crystal display, that is, decides the overall brightness for the picture material that liquid crystal display is shown.
Certainly, display device of the prior art is there is also many display technologies that backlight is not required, such as plasma, OLED
(Organic Light-Emitting Diode, Organic Light Emitting Diode) etc., in these technologies, each pixel can be independent
It shines, without being filtered to backlight.And the information transferring method based on backlight modulation that the present invention protects, it is to be applied to need
Want the display device of backlight.
A kind of traditional implicit imaging communication method exists in the prior art, transmission information to be transmitted is embedded in figure
As in signal, changing the optical signal that display device is sent by changing the content of each pixel, the biography of information being realized with this
It is defeated.Specifically still by taking liquid crystal display as an example, traditional implicit imaging communication method can be in the liquid crystal in liquid crystal display
Control is added in layer, changes the content of each pixel with this, and it needs to realize hiding for human eye vision simultaneously, then its
While solving to change picture signal, also need to ensure that receiving device is able to detect that and is shown, but be not noticeable by the human eye,
It then needs to handle substantial amounts of picture signal, processing complexity is high, complicated technology realization.
Based on this, present invention innovation proposes a kind of information transferring method based on backlight modulation, and specifically the present invention is to aobvious
Show that the backlight of equipment is controlled, transmission information to be transmitted is embedded into backlight control signal, by controlling display device
Backlight flicker mode realizes that information is transmitted, and need not change the content of pixel in display device, would not also influence display device
Display effect, technology realize it is also relatively simple.Meanwhile the present invention realizes that information passes using display device backlight flicker mode
When defeated, the present invention is realized on the premise of the backlight duty cycle based on display device is constant, therefore for human eye, display
The display brightness of equipment does not change, and the high speed scintillation mode of backlight is also that human eye vision can not distinguish, therefore, this hair
It is bright to also achieve a kind of implicit visual light imaging communication means compared with human eye.
Specifically, the information transferring method based on backlight modulation that the present invention protects, as shown in Figure 1, this method is based on showing
Show equipment side, including：
Step 101, on the premise of the backlight duty cycle current based on the display device is constant, according to biography to be transmitted
Defeated information generates backlight control signal.
In the present invention, the duty cycle of backlight duty cycle, that is, backlight flicker, which determine the backlight illuminations of display device.One
As the environment that can be presently according to display device of backlight illumination of display device automatically adjust, also can be artificial by user
Setting.
Specifically, application scenarios of the invention are in the case where not changing the current backlight illumination of display device, are realized
Transmit the transmission of information.Therefore the present invention needs to determine the backlight duty cycle that display device is current first, determines that display is set with this
Standby current backlight illumination.So when being subsequently generated backlight control signal, also still need to ensure that the current backlight of display device accounts for
Sky is than constant.
Transmission information to be transmitted can be set of number information sequence data in the present invention.More specifically, which believes
Breath sequence data can be specially binary data, decimal data or hexadecimal data, and the present invention is according to biography to be transmitted
Defeated information generates backlight control signal.
Specifically it is assumed that the current backlight duty cycle of display device is 50%, transmission information to be transmitted for one group two into
Data 010101 processed, then the present invention is according to transmission information generation backlight control signal to be transmitted specifically, as shown in Figure 2：
Step 201, according to default control condition, the control of each data in the transmission information to be transmitted is determined
Subsignal.
Default control condition is used to represent light on and off duration and the digit of the backlight of the display device in the present invention
According to correspondence, position data refer to it is to be transmitted transmission information in the data of each.So carried out still exemplified by foregoing
Illustrate, the current backlight duty cycle of display device is 50%, then in order to ensure that the backlight illumination of display device is constant, is shown at this time
Show that the ratio of the light on and off duration of the backlight of equipment should be, the backlight lightening duration：Backlight extinguishes duration=1:1.
According to this, default control condition can be in the present invention, and backlight lightening continues 1ms, and backlight, which is extinguished, continues 1ms expression binary systems
Position data " 1 " in data, backlight lightening continue 0.5ms, and backlight extinguishes the position data continued in 0.5ms expression binary data
“0”.Certainly, the example above is the illustrative explanation of the present invention, and the present invention can also set backlight lightening to continue Mms, backlight
Extinguish the position data " 1 " continued in Mms expression binary data, backlight lightening continues Nms, and backlight extinguishes lasting Nms and represents two
Position data " 0 " in binary data, wherein M, N are positive number, and M is not equal to N.
So, if transmission information to be transmitted is binary data 010101, the present invention can determine described treat successively
The control subsignal of each data in the transmission information of transmission, specifically, for first position data " 0 ", corresponding control
Backlight lightening continues 0.5ms to system signal in order to control, extinguishes the first control subsignal for continuing 0.5ms, for second digit
According to " 1 ", backlight lightening continues 1ms to corresponding control subsignal in order to control, extinguishes the second control subsignal for continuing 1ms, with
This analogizes.
Step 202, the control subsignal to be transmitted for transmitting each data in information that will be determined, according to described
The order of transmission information middle position data to be transmitted generates backlight control signal into row set.
After the present invention determines in binary data 010101 the corresponding control subsignal of each data successively, according to
010101 order by definite all control subsignals into row set, generates backlight control signal.
Specifically in the present embodiment, i.e. backlight lightening continues 0.5ms to backlight control signal in order to control, extinguishes and continues
0.5ms, backlight lightening continue 1ms, and extinguishing continues 1ms, backlight lightening continues 0.5ms, extinguish and continue 0.5ms, backlight lightening is held
Continuous 1ms, extinguishing continues 1ms, backlight lightening continues 0.5ms, and extinguishing continues 0.5ms, backlight lightening continues 1ms, extinguishes lasting 1ms
Signal.
In the present embodiment, the backlight control signal that the present invention generates is to control the back of the body according to transmission information " 0 ", " 1 "
Light time-interleaved light on and off in units of 1ms or 0.5ms, thus it is of the invention no matter when sending data ' 0 ' or data ' 1 ',
Its backlight duty cycle is all 50%, ensure that the backlight illumination of display device is constant.
It should also be noted that, the flicker side for the time-interleaved light on and off in units of 1ms or 0.5ms of backlight in the present invention
Formula is imperceptible for human eye vision, and the present invention realizes the human eye vision effect for not changing backlight illumination.
Step 102, according to the backlight control signal, the backlight flicker mode of the display device is controlled, so that institute
Display device is stated according to the backlight flicker mode into line flicker.
After step 101 generates backlight control signal, display device controls backlight flicker according to the backlight control signal
Mode, and then according to the backlight flicker mode into line flicker.Therefore the present invention will carry out in transmission information insertion backlight signal
Transmission without changing the content of pixel, ensure that display device shows the display effect of image.
Therefore the above-mentioned technical proposal of the application present invention, the information transferring method provided by the invention based on backlight modulation,
On the premise of the backlight duty cycle based on display device is constant, backlight control signal is generated according to transmission information to be transmitted,
And then according to backlight control signal, the backlight flicker mode of the display device is controlled, so that the display device is according to institute
Backlight flicker mode is stated into line flicker.Therefore the present invention is by controlling display device backlight flicker mode to realize the biography of transmission information
Defeated, without changing the content of pixel in display device, i.e., the present invention will not change the picture material that display device is shown, ensure that
The display effect of display device, and the present invention realizes that information is transmitted using display device backlight flicker mode, without believing image
It number is handled, technology is realized simple.
Meanwhile the present invention is on the premise of the backlight duty cycle based on display device is constant, that is, is ensureing display device
On the basis of original display brightness is constant, realize that information is transmitted using display device backlight flicker mode, therefore the present invention realizes
A kind of implicit visual light imaging communication means compared with human eye.
Based on above-described embodiment, the present invention also provides a kind of information transferring method of backlight modulation, as shown in figure 3, the party
Method is based on imaging device side, including：
Step 301, the picture material that continuous acquisition display device is shown, and read the backlight of the picture material gathered every time
Brightness.
In the present invention, the picture material that imaging device is shown with certain frequency of exposure continuous acquisition display device, and
Read out the backlight illumination of each the image collected content.
Such as imaging device is so existed with the picture material that the frequency of exposure continuous acquisition display device of 0.1ms/ times is shown
In the time of 2ms, imaging device can collect 20 picture materials, and read out the backlight illumination of 20 picture materials.
In practical applications, imaging device can be specially the image picking-up apparatus such as camera, camera, most at present
Camera or camera can realize 1/1000 second even shorter time for exposure.
Step 302, the backlight illumination according to the picture material gathered determines the backlight flicker mode of the display device.
It is still continued to explain by taking the example in previous embodiment as an example, display device sends transmission information 010101, by backlight
The flashing mode of time-interleaved light on and off is into line flicker in units of 0.5ms or 1ms, then for imaging device side, adopts for first 5 times
The backlight illumination of the picture material collected is the first brightness value, and the backlight illumination of next 5 the image collected contents is
First extinguishing value continues the backlight illumination of next 10 the image collected contents as the second brightness value, and after under continued access
The backlight illumination for the 10 the image collected contents come is the second extinguishing value, and so on.It is set hence, it can be determined that going out display
Standby backlight flicker mode is：Lasting 0.5ms is lighted, is extinguished and is continued 0.5ms, lights lasting 1ms, is extinguished and is continued 1ms, lights and hold
Continuous 0.5ms extinguishes and continues 0.5ms, lights lasting 1ms, extinguishes and continues 1ms, lights lasting 0.5ms, extinguishes and continue 0.5ms, point
It is bright to continue 1ms, extinguish and continue 1ms.
Step 303, according to definite backlight flicker mode, the transmission information that the display device is sent is determined.
In the present embodiment, transmission information is set of number information sequence data.The digital information sequence data can be specific
For binary data, decimal data or hexadecimal data.So still illustrated by taking preceding example as an example.Display device
The transmission information of transmission is one group of binary data 010101.
Specifically, after the backlight flicker mode of display device is determined, determine to show according to definite backlight flicker mode
Show equipment send transmission information, specific method as shown in figure 4, including：
Step 401, determine that the display device flickers the corresponding backlight light on and off time each time.
Specifically in the present embodiment, gathered and read by the connection of imaging device, it may be determined that learn display device backlight
Lasting 0.5ms is lighted, is extinguished and is continued 0.5ms, lights lasting 1ms, extinguishes and continues 1ms, lights lasting 0.5ms, extinguish and continue
0.5ms, lasting 1ms is lighted, extinguishes and continue 1ms, light lasting 0.5ms, extinguished and continue 0.5ms, light lasting 1ms, extinguishing is held
Continuous 1ms.
Step 402, according to default control condition, when determining that the display device flickers corresponding backlight light on and off each time
Between corresponding position data.
Wherein default control condition is used to represent the light on and off duration of the backlight of the display device and position data
Correspondence.
Specifically, backlight lightening continues 0.5ms, and backlight extinguishes lasting 0.5ms and corresponds to position data " 0 ", and backlight lightening is lasting
1ms, backlight extinguish lasting 1ms and correspond to position data " 1 ".
Step 403, by all definite successively data acquisition systems, the transmission information that the display device is sent is determined.
Display device is flickered to corresponding backlight light on and off time corresponding position data each time by way of step 402 all
It determines, and then by all definite data acquisition systems, the transmission information for determining display device transmission is 010101.
On the basis of above-described embodiment, the present invention also provides a kind of information carrying means based on backlight modulation, such as Fig. 5
It is shown, including：Backlight control signal generation unit 100 and backlight flicker mode control unit 200.Wherein.
Backlight control signal generation unit 100, in the constant premise of the backlight duty cycle based on the display device
Under, according to transmission information generation backlight control signal to be transmitted；
Backlight flicker mode control unit 200, for according to the backlight control signal, controlling the back of the body of the display device
Optical flare mode so that the display device according to the backlight flicker mode into line flicker.
Wherein, the transmission information to be transmitted is one group of binary data, decimal data or hexadecimal data；
The backlight flicker mode control unit 200 further includes, as shown in Figure 6：
Signal determination subelement 210, for according to default control condition, determining every in the transmission information to be transmitted
The control subsignal of a data；
Signal generation subelement 220, for the control to be transmitted for transmitting each data in information that will be determined
Subsignal according to the order of the transmission information middle position data to be transmitted into row set, generates backlight control signal.
Wherein, the control condition is used to represent the light on and off time pass corresponding with position data of the backlight of the display device
System.
On the basis of above-described embodiment, the present invention also provides a kind of information carrying means based on backlight modulation, such as Fig. 7
It is shown, including：Gather reading unit 300, the first determination unit 400 and the second determination unit 500.Wherein,
Reading unit 300 is gathered, for the picture material that continuous acquisition display device is shown, and reads the figure gathered every time
As the backlight illumination of content；
First determination unit 400 for the backlight illumination of the picture material according to acquisition, determines the back of the body of the display device
Optical flare mode；
Second determination unit 500, for according to definite backlight flicker mode, determining the transmission that the display device is sent
Information.
Wherein, the transmission information is one group of binary data, decimal data or hexadecimal data；
Second determination unit 500 further includes, as shown in Figure 8：
First determination subelement 510, for determining that the display device flickers the corresponding backlight light on and off time each time；
Second determination subelement 520, for according to default control condition, determining that the display device flickers pair each time
The backlight light on and off time corresponding position data answered；
3rd determination subelement 530 for all data acquisition systems that will be determined successively, determines that the display device is sent
Transmission information.
It should be noted that each embodiment in this specification is described by the way of progressive, each embodiment weight
Point explanation is all difference from other examples, and just to refer each other for identical similar part between each embodiment.
For device class embodiment, since it is basicly similar to embodiment of the method, so description is fairly simple, related part ginseng
See the part explanation of embodiment of the method.
Finally, it is to be noted that, herein, relational terms such as first and second and the like be used merely to by
One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation
Between there are any actual relationship or orders.Moreover, term " comprising ", "comprising" or its any other variant meaning
Covering non-exclusive inclusion, so that process, method, article or equipment including a series of elements not only include that
A little elements, but also including other elements that are not explicitly listed or further include for this process, method, article or
The intrinsic element of equipment.In the absence of more restrictions, the element limited by sentence "including a ...", is not arranged
Except also there are other identical elements in the process, method, article or apparatus that includes the element.
Detailed Jie has been carried out to a kind of information transferring method and device based on backlight modulation provided by the present invention above
It continues, specific case used herein is set forth the principle of the present invention and embodiment, and the explanation of above example is only
It is the method and its core concept for being used to help understand the present invention；Meanwhile for those of ordinary skill in the art, according to this hair
Bright thought, there will be changes in specific embodiments and applications, in conclusion this specification content should not manage
It solves as limitation of the present invention.
Claims (10)
1. a kind of information transferring method based on backlight modulation, applied to display device, which is characterized in that the described method includes：
On the premise of the backlight duty cycle current based on the display device is constant, according to the transmission information generation back of the body to be transmitted
Optical control signal；
According to the backlight control signal, the backlight flicker mode of the display device is controlled, so that the display device is pressed
According to the backlight flicker mode into line flicker.
2. according to the method described in claim 1, it is characterized in that, the transmission information to be transmitted is set of number information sequence
Column data；
It is described to include according to transmission information generation backlight control signal to be transmitted：
According to default control condition, the control subsignal to be transmitted for transmitting each data in information is determined；
The control subsignal to be transmitted for transmitting each data in information that will be determined, according to the transmission to be transmitted
The order of information middle position data generates backlight control signal into row set.
3. according to the method described in claim 2, it is characterized in that, the control condition is used to represent the back of the body of the display device
The light on and off duration of light and the correspondence of position data.
4. a kind of information transferring method based on backlight modulation, applied to imaging device, which is characterized in that the described method includes：
The picture material that continuous acquisition display device is shown, and read the backlight illumination of the picture material gathered every time；
The backlight illumination of picture material according to acquisition determines the backlight flicker mode of the display device；
According to definite backlight flicker mode, the transmission information that the display device is sent is determined.
5. according to the method described in claim 4, it is characterized in that, the transmission information is set of number information sequence data；
The backlight flicker mode that the foundation determines determines that the transport packet that the display device is sent includes：
Determine that the display device flickers the corresponding backlight light on and off time each time；
According to default control condition, determine that the display device flickers corresponding backlight light on and off time corresponding digit each time
According to；
By all definite successively data acquisition systems, the transmission information that the display device is sent is determined.
6. a kind of information carrying means based on backlight modulation, which is characterized in that including：
Backlight control signal generation unit, on the premise of the backlight duty cycle based on display device is constant, according to be passed
Defeated transmission information generation backlight control signal；
Backlight flicker mode control unit, for according to the backlight control signal, controlling the backlight flicker of the display device
Mode so that the display device according to the backlight flicker mode into line flicker.
7. device according to claim 6, which is characterized in that the transmission information to be transmitted is set of number information sequence
Column data；
The backlight control signal generation unit includes：
Signal determination subelement, for according to default control condition, determining each digit in the transmission information to be transmitted
According to control subsignal；
Signal generation subelement, for will determine it is described it is to be transmitted transmission information in each data control subsignal,
According to the order of the transmission information middle position data to be transmitted into row set, backlight control signal is generated.
8. device according to claim 7, which is characterized in that the control condition is used to represent the back of the body of the display device
The light on and off time of light and the correspondence of position data.
9. a kind of information carrying means based on backlight modulation, which is characterized in that including：
Reading unit is gathered, for the picture material that continuous acquisition display device is shown, and reads the picture material gathered every time
Backlight illumination；
First determination unit for the backlight illumination of the picture material according to acquisition, determines the backlight flicker of the display device
Mode；
Second determination unit, for according to definite backlight flicker mode, determining the transmission information that the display device is sent.
10. device according to claim 9, which is characterized in that the transmission information is set of number information sequence data；
Second determination unit includes：
First determination subelement, for determining that the display device flickers the corresponding backlight light on and off time each time；
Second determination subelement, for according to default control condition, determining that the display device flickers the corresponding back of the body each time
Light goes out time corresponding position data；
3rd determination subelement for all data acquisition systems that will be determined successively, determines the transmission that the display device is sent
Information.
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| CN106452586B (en) * | 2016-11-14 | 2018-09-04 | 青岛海信电器股份有限公司 | It can be with the method and device of optic communication using LCD device backlight realization |
| CN107404354A (en) * | 2017-08-24 | 2017-11-28 | 河南中云创光电科技股份有限公司 | A kind of visible light communication device and method carried out by screen |
| CN110730345B (en) * | 2019-10-11 | 2022-09-02 | 京东方科技集团股份有限公司 | Image display method, image recognition device, image display medium, image recognition device, and image recognition system |
| CN111341200B (en) * | 2020-03-06 | 2022-08-26 | 京东方科技集团股份有限公司 | Backlight assembly for display, display device and communication system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101625843A (en) * | 2009-08-05 | 2010-01-13 | 青岛海信电器股份有限公司 | Backlight control method, backlight control device and LED liquid crystal display television |
| CN102801471A (en) * | 2012-07-09 | 2012-11-28 | 中国科学院半导体研究所 | Visible light communication system and method for portable device |
| CN103378923A (en) * | 2012-04-18 | 2013-10-30 | 北京鼎合远传技术有限公司 | FM (frequency modulation)-based baseband transmission encoding method and apparatus thereof |
| CN103415109A (en) * | 2013-07-22 | 2013-11-27 | 深圳Tcl新技术有限公司 | Adjusting method for LED backlight brightness |
| CN104780238A (en) * | 2015-03-26 | 2015-07-15 | 惠州Tcl移动通信有限公司 | Handheld terminal, computer and visible light communication system |
-
2015
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101625843A (en) * | 2009-08-05 | 2010-01-13 | 青岛海信电器股份有限公司 | Backlight control method, backlight control device and LED liquid crystal display television |
| CN103378923A (en) * | 2012-04-18 | 2013-10-30 | 北京鼎合远传技术有限公司 | FM (frequency modulation)-based baseband transmission encoding method and apparatus thereof |
| CN102801471A (en) * | 2012-07-09 | 2012-11-28 | 中国科学院半导体研究所 | Visible light communication system and method for portable device |
| CN103415109A (en) * | 2013-07-22 | 2013-11-27 | 深圳Tcl新技术有限公司 | Adjusting method for LED backlight brightness |
| CN104780238A (en) * | 2015-03-26 | 2015-07-15 | 惠州Tcl移动通信有限公司 | Handheld terminal, computer and visible light communication system |
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