CN105187124A - Information transmission method and device based on backlight modulation - Google Patents
Information transmission method and device based on backlight modulation Download PDFInfo
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- CN105187124A CN105187124A CN201510625991.7A CN201510625991A CN105187124A CN 105187124 A CN105187124 A CN 105187124A CN 201510625991 A CN201510625991 A CN 201510625991A CN 105187124 A CN105187124 A CN 105187124A
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Abstract
The present invention provides an information transmission method and device based on backlight modulation. The method comprises: generating a backlight control signal according to transmission information to be transmitted on the premise that the duty ratio of current backlight of display equipment is kept unchanged; and controlling a backlight flickering mode of the display equipment according to the backlight control signal, so that the display equipment flickers according to the backlight flickering mode. In the present invention, the transmission of the transmission information is realized by controlling the backlight flickering mode of the display equipment, without the need for changing the content of a pixel in the display equipment, namely, the present invention does not change the image content displayed by the display equipment, thereby guaranteeing the display effect of the display equipment; and moreover, the present invention realizes the information transmission by virtue of the backlight flickering mode of the display equipment, without the need for processing an image signal, so that the technical realization is simple.
Description
Technical field
The present invention relates to technical field of visible light communication, more particularly, relate to a kind of information transferring method based on backlight modulation and device.
Background technology
Along with developing rapidly of visible light communication technology, realize based on visible light communication technology the development trend that information transmission has become the current communications field.
Specifically in imaging communication technical field, prior art comprises a kind of traditional implicit expression imaging communication method, it is by being modulated in picture signal by transmission information waiting for transmission, changes the light signal that display device sends, realize the transmission of information with this by the content changing each pixel.
But the present inventor studies rear discovery to above-mentioned traditional implicit expression imaging communication method, traditional implicit expression imaging communication method needs the content changing pixel to realize information transmission, and the content of pixel directly decides the picture material that display device finally shows, so traditional implicit expression imaging communication method will inevitably affect the display effect of the picture material of display.And if although traditional implicit expression imaging communication method will accomplish to change picture material but do not perceived by user's human eye, then need to process a large amount of picture signals, its process complexity is high, complicated technology realization.
Summary of the invention
In view of this, the invention provides a kind of information transferring method based on backlight modulation and device, to solve the display effect that implicit expression imaging communication method traditional in prior art can affect the picture material of display device display, and need to process a large amount of picture signals, process complexity is high, the problem of complicated technology realization.Technical scheme is as follows:
Based on an aspect of of the present present invention, the invention provides a kind of information transferring method based on backlight modulation, be applied to display device, described method comprises:
Under the prerequisite that the backlight duty ratio current based on described display device is constant, generate backlight control signal according to transmission information waiting for transmission;
According to described backlight control signal, control the backlight flicker mode of described display device, glimmer according to described backlight flicker mode to make described display device.
Preferably, described transmission information waiting for transmission is set of number information sequence data;
Describedly generate backlight control signal according to transmission information waiting for transmission and comprise:
According to the controlled condition preset, determine the control subsignal of each data in described transmission information waiting for transmission;
By the control subsignal of each data in the transmission information described waiting for transmission determined, gather according to the order of described transmission information meta data waiting for transmission, generate backlight control signal.
Preferably, described controlled condition is for the corresponding relation of light on and off duration and bit data of representing the backlight of described display device.
Based on another aspect of the present invention, the invention provides a kind of information transferring method based on backlight modulation, be applied to imaging device, described method comprises:
The picture material of continuous acquisition display device display, and the backlight illumination reading each picture material gathered;
According to the backlight illumination of the picture material gathered, determine the backlight flicker mode of described display device;
According to the backlight flicker mode determined, determine the transmission information that described display device sends.
Preferably, described transmission information is set of number information sequence data; ;
The backlight flicker mode that described foundation is determined, determine that the transmission information that described display device sends comprises:
Determine that described display device glimmers the corresponding backlight light on and off time each time;
According to the controlled condition preset, determine that described display device glimmers bit data corresponding to corresponding backlight light on and off time each time;
By all bit data set determined successively, determine the transmission information that described display device sends.
Based on another aspect of the invention, the invention provides a kind of information carrying means based on backlight modulation, comprising:
Backlight control signal generation unit, under the constant prerequisite of the backlight duty ratio based on described display device, generates backlight control signal according to transmission information waiting for transmission;
Backlight flicker mode control unit, for according to described backlight control signal, controls the backlight flicker mode of described display device, glimmers according to described backlight flicker mode to make described display device.
Preferably, described transmission information waiting for transmission is set of number information sequence data;
Described backlight flicker mode control unit comprises:
Signal determination subelement, for according to the controlled condition preset, determines the control subsignal of each data in described transmission information waiting for transmission;
Signal generates subelement, for the control subsignal of each data in the transmission information described waiting for transmission that will determine, gathers according to the order of described transmission information meta data waiting for transmission, generates backlight control signal.
Preferably, described controlled condition is for the corresponding relation of light on and off time and bit data of representing the backlight of described display device.
Based on another aspect of the invention, the invention provides a kind of information carrying means based on backlight modulation, comprising:
Gather reading unit, for the picture material of continuous acquisition display device display, and read the backlight illumination of each picture material gathered;
First determining unit, for the backlight illumination according to the picture material gathered, determines the backlight flicker mode of described display device;
Second determining unit, for according to the backlight flicker mode determined, determines the transmission information that described display device sends.
Preferably, described transmission information is set of number information sequence data;
Described second determining unit comprises:
First determines subelement, for determining that described display device glimmers the corresponding backlight light on and off time each time;
Second determines subelement, for according to the controlled condition preset, determines that described display device glimmers bit data corresponding to corresponding backlight light on and off time each time;
3rd determines subelement, for all bit data set that will determine successively, determines the transmission information that described display device sends.
Apply technique scheme of the present invention, information transferring method based on backlight modulation provided by the invention, under the prerequisite that the backlight duty ratio based on display device is constant, backlight control signal is generated according to transmission information waiting for transmission, and then according to backlight control signal, control the backlight flicker mode of described display device, glimmer according to described backlight flicker mode to make described display device.Therefore the present invention realizes the transmission of transmission information by controlling display device backlight flicker mode, without the need to changing the content of pixel in display device, namely the present invention can not change the picture material of display device display, ensure that the display effect of display device, and the present invention utilizes display device backlight flicker mode to realize information transmission, without the need to processing picture signal, technology realizes simple.
Simultaneously, the present invention is under the constant prerequisite of the backlight duty ratio based on display device, namely ensureing on the basis that the brightness of display device original display is constant, utilize display device backlight flicker mode to realize information transmission, therefore present invention achieves a kind of implicit expression visual light imaging communication means relative to human eye.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments of the invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the accompanying drawing provided.
Fig. 1 is the flow chart of a kind of information transferring method based on backlight modulation provided by the invention;
Fig. 2 is another flow chart of a kind of information transferring method based on backlight modulation provided by the invention;
Fig. 3 is a flow chart again of a kind of information transferring method based on backlight modulation provided by the invention;
Fig. 4 is a flow chart again of a kind of information transferring method based on backlight modulation provided by the invention;
Fig. 5 is the structural representation of a kind of information carrying means based on backlight modulation provided by the invention;
Fig. 6 is the structural representation of backlight flicker mode control unit in the present invention;
Fig. 7 is another structural representation of a kind of information carrying means based on backlight modulation provided by the invention;
Fig. 8 is the structural representation of the second determining unit in the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Before specifically introducing implementation method of the present invention, first inventor simply introduces related background art of the present invention.
Backlight is a kind of lighting system, and backlight display refers to the luminescent device of display device by self, makes the display screen of display device send backlight, with clearly display image content.Usual display device can be specially liquid crystal display, so for liquid crystal display, it sends backlight by the luminescent device of self, be radiated to even back the liquid crystal layer back side in liquid crystal display, thus the picture material that liquid crystal layer is shown clearly shows.
Wherein, the liquid crystal layer in liquid crystal display be light signal for changing RGB (RGB) three kinds of colors in units of pixel by property, realize the filtration to backlight signal, thus demonstrate different picture materials.Namely, the filtration of liquid crystal layer to backlight signal decides the picture material of liquid crystal display display.
For the backlight illumination of liquid crystal display, it is not control the backlight intensity realization of backlight by liquid crystal display, but realized by the duty ratio controlling backlight flicker.The duty ratio of backlight flicker refers to the ratio of the duration that backlight lightening and backlight are extinguished.In actual applications, the duration of extinguishing relative to backlight when the duration of backlight lightening is time longer, the backlight illumination that liquid crystal display totally presents is higher, otherwise, the duration of the duration relative backlight extinguishing of backlight lightening, the backlight illumination that liquid crystal display totally presents was lower more in short-term.Also it should be noted that, for this high speed scintillation mode of backlight, human eye vision is that None-identified distinguishes herein.Therefore, the duty ratio of backlight flicker decides the backlight illumination of liquid crystal display, namely decides the overall brightness of the picture material of liquid crystal display display.
Certainly, also there is many Display Techniques not needing backlight in display device of the prior art, as plasma, OLED (OrganicLight-EmittingDiode, Organic Light Emitting Diode) etc., in these technology, each pixel all can be independently luminous, and without the need to filtering backlight.And the information transferring method based on backlight modulation of the present invention's protection, be applied to the display device needing backlight.
There is a kind of traditional implicit expression imaging communication method in prior art, transmission information waiting for transmission is embedded in picture signal by it, changes the light signal that display device sends, realize the transmission of information with this by the content changing each pixel.Particularly still for liquid crystal display, traditional implicit expression imaging communication method can access control in the liquid crystal layer in liquid crystal display, the content of each pixel is changed with this, and it needs to realize hiding of human eye vision simultaneously, so it is while solution changes picture signal, also needs to ensure that receiving equipment can detect and show, but do not discovered by human eye, then need to process a large amount of picture signals, process complexity is high, complicated technology realization.
Based on this, the present invention innovates and proposes a kind of information transferring method based on backlight modulation, the backlight of the present invention to display device controls particularly, transmission information waiting for transmission is embedded in backlight control signal, information transmission is realized by controlling display device backlight flicker mode, do not need the content changing pixel in display device, also would not affect the display effect of display device, its technology realizes also comparatively simple.Simultaneously, when the present invention utilizes display device backlight flicker mode to realize information transmission, the present invention realizes based under the constant prerequisite of the backlight duty ratio of display device, therefore for human eye, the display brightness of display device does not change, the high speed scintillation mode of backlight is also that human eye vision cannot distinguish, and therefore, The invention also achieves a kind of implicit expression visual light imaging communication means relative to human eye.
Particularly, the information transferring method based on backlight modulation of the present invention's protection, as shown in Figure 1, the method, based on display device side, comprising:
Step 101, under the prerequisite that the backlight duty ratio current based on described display device is constant, generates backlight control signal according to transmission information waiting for transmission.
In the present invention, the duty ratio of backlight duty ratio and backlight flicker, which determine the backlight illumination of display device.The backlight illumination of general display device can automatically adjust according to the current residing environment of display device, and it also artificially can be set by user.
Particularly, application scenarios of the present invention is when not changing the current backlight illumination of display device, realizes the transmission of transmission information.Therefore the present invention needs the backlight duty ratio of first determining that display device is current, determines with this backlight illumination that display device is current.So when follow-up generation backlight control signal, the backlight duty ratio also still needing guarantee display device current is constant.
In the present invention, transmission information waiting for transmission can be set of number information sequence data.More specifically, these digital information sequence data can be specially binary data, decimal data or hexadecimal data, and the present invention generates backlight control signal according to transmission information waiting for transmission.
Suppose particularly, the current backlight duty ratio of display device is 50%, and transmission information waiting for transmission is one group of binary data 010101, and so the present invention generates backlight control signal according to transmission information waiting for transmission and is specially, as shown in Figure 2:
Step 201, according to the controlled condition preset, determines the control subsignal of each data in described transmission information waiting for transmission.
The controlled condition preset in the present invention is for the corresponding relation of light on and off duration and bit data of representing the backlight of described display device, and bit data to refer in transmission information waiting for transmission each data.So still be described for aforementioned, the current backlight duty ratio of display device is 50%, so constant in order to ensure the backlight illumination of display device, now the ratio of the light on and off duration of the backlight of display device should be, the backlight lightening duration: backlight extinguish duration=1:1.According to this, the controlled condition preset in the present invention can be that backlight lightening continues 1ms, and the lasting 1ms of backlight extinguishing represents the bit data " 1 " in binary data, backlight lightening continues 0.5ms, and the lasting 0.5ms of backlight extinguishing represents the bit data " 0 " in binary data.Certainly, above-mentioned citing is exemplifying explanation, the present invention can also arrange backlight lightening and continue Mms, the lasting Mms of backlight extinguishing represents the bit data " 1 " in binary data, backlight lightening continues Nms, the lasting Nms of backlight extinguishing represents the bit data " 0 " in binary data, and wherein M, N are positive number, and M is not equal to N.
So, if when transmission information waiting for transmission is binary data 010101, the present invention can determine the control subsignal of each data in described transmission information waiting for transmission successively, particularly, for first bit data " 0 ", the control subsignal of its correspondence continues 0.5ms for controlling backlight lightening, extinguish the first control subsignal continuing 0.5ms, for second bit data " 1 ", the control subsignal of its correspondence continues 1ms for controlling backlight lightening, extinguish the second control subsignal continuing 1ms, by that analogy.
Step 202, by the control subsignal of each data in the transmission information described waiting for transmission determined, gathers according to the order of described transmission information meta data waiting for transmission, generates backlight control signal.
After the present invention determines the control subsignal that in binary data 010101, each data is corresponding successively, according to the order of 010101, all control subsignals determined are gathered, generate backlight control signal.
Particularly in the present embodiment, backlight control signal is control backlight lightening and continues 0.5ms, extinguishing continues 0.5ms, backlight lightening continues 1ms, extinguishing continues 1ms, backlight lightening continues 0.5ms, extinguishing continues 0.5ms, backlight lightening continues 1ms, extinguishing continues 1ms, backlight lightening continues 0.5ms, and extinguishing continues 0.5ms, backlight lightening continues 1ms, extinguishes the signal of lasting 1ms.
In the present embodiment, backlight control signal that the present invention generates controls backlight time-interleaved light on and off in units of 1ms or 0.5ms according to transmission information " 0 ", " 1 ", therefore the present invention is no matter when sending data ' 0 ' or data ' 1 ', its backlight duty ratio is all 50%, ensure that the backlight illumination of display device is constant.
Also it should be noted that, for the flashing mode of the time-interleaved light on and off in units of 1ms or 0.5ms of backlight in the present invention, be imperceptible for human eye vision, present invention achieves the human eye vision effect not changing backlight illumination.
Step 102, according to described backlight control signal, controls the backlight flicker mode of described display device, glimmers according to described backlight flicker mode to make described display device.
After step 101 generates backlight control signal, display device controls backlight flicker mode according to described backlight control signal, and then glimmers according to described backlight flicker mode.Therefore transmission information embeds in backlight signal and transmits by the present invention, without the need to changing the content of pixel, ensure that the display effect of display device display image.
Therefore technique scheme of the present invention is applied, information transferring method based on backlight modulation provided by the invention, under the prerequisite that the backlight duty ratio based on display device is constant, backlight control signal is generated according to transmission information waiting for transmission, and then according to backlight control signal, control the backlight flicker mode of described display device, glimmer according to described backlight flicker mode to make described display device.Therefore the present invention realizes the transmission of transmission information by controlling display device backlight flicker mode, without the need to changing the content of pixel in display device, namely the present invention can not change the picture material of display device display, ensure that the display effect of display device, and the present invention utilizes display device backlight flicker mode to realize information transmission, without the need to processing picture signal, technology realizes simple.
Simultaneously, the present invention is under the constant prerequisite of the backlight duty ratio based on display device, namely ensureing on the basis that the brightness of display device original display is constant, utilize display device backlight flicker mode to realize information transmission, therefore present invention achieves a kind of implicit expression visual light imaging communication means relative to human eye.
Based on above-described embodiment, the present invention also provides a kind of information transferring method of backlight modulation, and as shown in Figure 3, the method, based on imaging device side, comprising:
Step 301, the picture material of continuous acquisition display device display, and the backlight illumination reading each picture material gathered.
In the present invention, the picture material that imaging device shows with certain frequency of exposure continuous acquisition display device, and read out the backlight illumination of the picture material at every turn collected.
The picture material that such as imaging device shows with the frequency of exposure continuous acquisition display device of 0.1ms/ time is so within the time of 2ms, and imaging device can collect 20 picture materials, and reads out the backlight illumination of these 20 picture materials.
In actual applications, imaging device can be specially the image picking-up apparatus such as camera, camera, and current most camera or camera all can realize 1/1000 second even shorter time for exposure.
Step 302, according to the backlight illumination of the picture material gathered, determines the backlight flicker mode of described display device.
Still go on to say for the example in previous embodiment, display device sends transmission information 010101, glimmer by the flashing mode of backlight time-interleaved light on and off in units of 0.5ms or 1ms, so for imaging device side, the backlight illumination of its picture material collected for first 5 times is the first brightness value, the backlight illumination of the ensuing picture material collected for 5 times is the first extinguishing value, the backlight illumination continuing the ensuing picture material collected for 10 times is the second brightness value, and the backlight illumination continuing the ensuing picture material collected for 10 times is the second extinguishing value, by that analogy.Therefore, can determine that the backlight flicker mode of display device is: light lasting 0.5ms, extinguish and continue 0.5ms, light lasting 1ms, extinguish and continue 1ms, light lasting 0.5ms, extinguish and continue 0.5ms, light lasting 1ms, extinguish and continue 1ms, light lasting 0.5ms, extinguish and continue 0.5ms, light lasting 1ms, extinguish and continue 1ms.
Step 303, according to the backlight flicker mode determined, determines the transmission information that described display device sends.
In the present embodiment, transmission information is set of number information sequence data.These digital information sequence data can be specially binary data, decimal data or hexadecimal data.So still be described for preceding example.The transmission information that display device sends is one group of binary data 010101.
Particularly, after determining the backlight flicker mode of display device, the transmission information sent according to the backlight flicker mode determination display device determined, concrete grammar as shown in Figure 4, comprising:
Step 401, determines that described display device glimmers the corresponding backlight light on and off time each time.
Specifically in the present embodiment, read by the connection collection of imaging device, can determine to learn that display device backlight lightening continues 0.5ms, extinguish and continue 0.5ms, light lasting 1ms, extinguish and continue 1ms, light lasting 0.5ms, extinguish and continue 0.5ms, light lasting 1ms, extinguish and continue 1ms, light lasting 0.5ms, extinguish and continue 0.5ms, light lasting 1ms, extinguish and continue 1ms.
Step 402, according to the controlled condition preset, determines that described display device glimmers bit data corresponding to corresponding backlight light on and off time each time.
The controlled condition wherein preset is for the corresponding relation of light on and off duration and bit data of representing the backlight of described display device.
Particularly, backlight lightening continues 0.5ms, and backlight is extinguished and continued the corresponding bit data " 0 " of 0.5ms, and backlight lightening continues 1ms, and backlight is extinguished and continued the corresponding bit data " 1 " of 1ms.
Step 403, by all bit data set determined successively, determines the transmission information that described display device sends.
All determined by the mode of step 402 display device glimmered each time bit data corresponding to corresponding backlight light on and off time, and then all bit data set that will determine, determine that the transmission information that display device sends is 010101.
On the basis of above-described embodiment, the present invention also provides a kind of information carrying means based on backlight modulation, as shown in Figure 5, comprising: backlight control signal generation unit 100 and backlight flicker mode control unit 200.Wherein.
Backlight control signal generation unit 100, under the constant prerequisite of the backlight duty ratio based on described display device, generates backlight control signal according to transmission information waiting for transmission;
Backlight flicker mode control unit 200, for according to described backlight control signal, controls the backlight flicker mode of described display device, glimmers according to described backlight flicker mode to make described display device.
Wherein, described transmission information waiting for transmission is one group of binary data, decimal data or hexadecimal data;
Described backlight flicker mode control unit 200 also comprises, as shown in Figure 6:
Signal determination subelement 210, for according to the controlled condition preset, determines the control subsignal of each data in described transmission information waiting for transmission;
Signal generates subelement 220, for the control subsignal of each data in the transmission information described waiting for transmission that will determine, gathers according to the order of described transmission information meta data waiting for transmission, generates backlight control signal.
Wherein, described controlled condition is for the corresponding relation of light on and off time and bit data of representing the backlight of described display device.
On the basis of above-described embodiment, the present invention also provides a kind of information carrying means based on backlight modulation, as shown in Figure 7, comprising: gather reading unit 300, first determining unit 400 and the second determining unit 500.Wherein,
Gather reading unit 300, for the picture material of continuous acquisition display device display, and read the backlight illumination of each picture material gathered;
First determining unit 400, for the backlight illumination according to the picture material gathered, determines the backlight flicker mode of described display device;
Second determining unit 500, for according to the backlight flicker mode determined, determines the transmission information that described display device sends.
Wherein, described transmission information is one group of binary data, decimal data or hexadecimal data;
Described second determining unit 500 also comprises, as shown in Figure 8:
First determines subelement 510, for determining that described display device glimmers the corresponding backlight light on and off time each time;
Second determines subelement 520, for according to the controlled condition preset, determines that described display device glimmers bit data corresponding to corresponding backlight light on and off time each time;
3rd determines subelement 530, for all bit data set that will determine successively, determines the transmission information that described display device sends.
It should be noted that, each embodiment in this specification all adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar part mutually see.For device class embodiment, due to itself and embodiment of the method basic simlarity, so description is fairly simple, relevant part illustrates see the part of embodiment of the method.
Finally, also it should be noted that, in this article, the such as relational terms of first and second grades and so on is only used for an entity or operation to separate with another entity or operating space, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment comprising described key element and also there is other identical element.
Above a kind of information transferring method based on backlight modulation provided by the present invention and device are described in detail, apply specific case herein to set forth principle of the present invention and execution mode, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (10)
1. based on an information transferring method for backlight modulation, be applied to display device, it is characterized in that, described method comprises:
Under the prerequisite that the backlight duty ratio current based on described display device is constant, generate backlight control signal according to transmission information waiting for transmission;
According to described backlight control signal, control the backlight flicker mode of described display device, glimmer according to described backlight flicker mode to make described display device.
2. method according to claim 1, is characterized in that, described transmission information waiting for transmission is set of number information sequence data;
Describedly generate backlight control signal according to transmission information waiting for transmission and comprise:
According to the controlled condition preset, determine the control subsignal of each data in described transmission information waiting for transmission;
By the control subsignal of each data in the transmission information described waiting for transmission determined, gather according to the order of described transmission information meta data waiting for transmission, generate backlight control signal.
3. method according to claim 2, is characterized in that, described controlled condition is for the corresponding relation of light on and off duration and bit data of representing the backlight of described display device.
4. based on an information transferring method for backlight modulation, be applied to imaging device, it is characterized in that, described method comprises:
The picture material of continuous acquisition display device display, and the backlight illumination reading each picture material gathered;
According to the backlight illumination of the picture material gathered, determine the backlight flicker mode of described display device;
According to the backlight flicker mode determined, determine the transmission information that described display device sends.
5. method according to claim 4, is characterized in that, described transmission information is set of number information sequence data; ;
The backlight flicker mode that described foundation is determined, determine that the transmission information that described display device sends comprises:
Determine that described display device glimmers the corresponding backlight light on and off time each time;
According to the controlled condition preset, determine that described display device glimmers bit data corresponding to corresponding backlight light on and off time each time;
By all bit data set determined successively, determine the transmission information that described display device sends.
6. based on an information carrying means for backlight modulation, it is characterized in that, comprising:
Backlight control signal generation unit, under the constant prerequisite of the backlight duty ratio based on described display device, generates backlight control signal according to transmission information waiting for transmission;
Backlight flicker mode control unit, for according to described backlight control signal, controls the backlight flicker mode of described display device, glimmers according to described backlight flicker mode to make described display device.
7. device according to claim 6, is characterized in that, described transmission information waiting for transmission is set of number information sequence data;
Described backlight flicker mode control unit comprises:
Signal determination subelement, for according to the controlled condition preset, determines the control subsignal of each data in described transmission information waiting for transmission;
Signal generates subelement, for the control subsignal of each data in the transmission information described waiting for transmission that will determine, gathers according to the order of described transmission information meta data waiting for transmission, generates backlight control signal.
8. device according to claim 7, is characterized in that, described controlled condition is for the corresponding relation of light on and off time and bit data of representing the backlight of described display device.
9. based on an information carrying means for backlight modulation, it is characterized in that, comprising:
Gather reading unit, for the picture material of continuous acquisition display device display, and read the backlight illumination of each picture material gathered;
First determining unit, for the backlight illumination according to the picture material gathered, determines the backlight flicker mode of described display device;
Second determining unit, for according to the backlight flicker mode determined, determines the transmission information that described display device sends.
10. device according to claim 9, is characterized in that, described transmission information is set of number information sequence data;
Described second determining unit comprises:
First determines subelement, for determining that described display device glimmers the corresponding backlight light on and off time each time;
Second determines subelement, for according to the controlled condition preset, determines that described display device glimmers bit data corresponding to corresponding backlight light on and off time each time;
3rd determines subelement, for all bit data set that will determine successively, determines the transmission information that described display device sends.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106452586A (en) * | 2016-11-14 | 2017-02-22 | 青岛海信电器股份有限公司 | Method and device for realizing visible light communication by using backlight of liquid crystal display device |
| 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 |
| CN110730345A (en) * | 2019-10-11 | 2020-01-24 | 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 |
| CN111341200A (en) * | 2020-03-06 | 2020-06-26 | 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
- 2015-09-28 CN CN201510625991.7A patent/CN105187124B/en active Active
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 |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106452586A (en) * | 2016-11-14 | 2017-02-22 | 青岛海信电器股份有限公司 | Method and device for realizing visible light communication by using backlight of liquid crystal display device |
| 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 |
| CN110730345A (en) * | 2019-10-11 | 2020-01-24 | 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 |
| US11889083B2 (en) | 2019-10-11 | 2024-01-30 | Boe Technology Group Co., Ltd. | Image display method and device, image recognition method and device, storage medium, electronic apparatus, and image system |
| CN111341200A (en) * | 2020-03-06 | 2020-06-26 | 京东方科技集团股份有限公司 | Backlight assembly for display, display device and communication system |
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