CN105141360A - Method for realizing file transmission, device and system - Google Patents
Method for realizing file transmission, device and system Download PDFInfo
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- CN105141360A CN105141360A CN201410240208.0A CN201410240208A CN105141360A CN 105141360 A CN105141360 A CN 105141360A CN 201410240208 A CN201410240208 A CN 201410240208A CN 105141360 A CN105141360 A CN 105141360A
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Abstract
The present invention discloses a method for realizing file transmission, a device and a system. When file information is sent, a file is encoded to generate bit information, the m consecutive bit information is mapped into corresponding gray value information orderly, and the gray value information are grouped to obtain a screen frame sequence, wherein only the gray value information in the same screen frame is displayed in the screen in the same transmission period, the gray value information in each screen frame is displayed by screens in order such that a receiving device collects the images displayed in the screen, and thus the transmission of the file to the receiving device is realized. The data real-time transmission is realized by the modes of screen display and image collection, the transmission process is simplified, the speed and reliability of data directed transmission are improved, the problems of easy interference and low transmission rate of an existing system are solved, and conditions are created for reliable transmission and big data application.
Description
Technical field
The present invention relates to the communications field, particularly a kind of methods, devices and systems for realizing file transfer.
Background technology
Traditional terminal-to-terminal service file mainly contains the modes such as bluetooth, data wire, infrared ray, WiFi, these modes are solving user file transmission problem, while improve transmission speed, but also there is the problem that mode of operation is more complicated, confidentiality is poor, transmission speed exists bottleneck, speed room for promotion is less simultaneously.
(VisibleLightCommunication is called for short: be VLC) a kind of novel wireless communication technology based on visible ray, visible light communication can provide short distance, safety, glitch-free wireless link visible light communication technology.Compared with traditional radio communication, there is obvious advantage.But current visible light communication technology exist transmission information amount little, be easily subject to environmental interference and transmission rate is low, therefore cannot be applied to the transfer of data between terminal.
Summary of the invention
The embodiment of the present invention provides a kind of methods, devices and systems for realizing file transfer.Real-time data transmission is realized by utilizing the mode of screen display and IMAQ, simplify transfer process, improve speed and the reliability of data-directed transmission, solve existing system and be easily disturbed the problem low with transmission rate, for transmitting and large market demand create condition.
According to an aspect of the present invention, a kind of method for realizing file transfer being provided, comprising:
When sending fileinfo, described file is encoded, to generate bit information;
Successively a continuous m bit information is mapped as corresponding gray value information, wherein m be more than or equal to 1 natural number;
Gray value information is divided into groups, to obtain screen frame sequence, in same transmission cycle, on screen, wherein only shows the gray value information in same screen frame;
By shielding the gray value information shown successively in each screen frame, so that receiving system is captured in the image that screen shows, thus realize described file to send to described receiving system.
In one embodiment, before transmission fileinfo, also comprise:
Using the modulation parameter of predetermined pulse-amplitude modulation parameter as current setting;
Comprise by the step of shielding the gray value information shown successively in each screen frame:
In the screen frame of display, the modulation parameter of current setting is utilized to carry out pulse-amplitude modulation to gray value information in current needs;
In the transmission cycle corresponding with the current screen frame needing to show, the gray value information after modulation is presented on screen.
In one embodiment, before transmission fileinfo, also comprise:
Using predetermined pulse-amplitude modulation parameter and the predetermined phase-modulation parameter modulation parameter as current setting;
Comprise by the step of shielding the gray value information shown successively in each screen frame:
Need in the screen frame of display current, utilize the modulation parameter of current setting to carry out pulse amplitude and phase combining modulation to gray value information;
In corresponding time slot in the transmission cycle corresponding with the current screen frame needing to show, the gray value information after modulation is presented on screen.
In one embodiment, when receiving the feedback information that receiving system sends, according to the modulation parameter of the error rate adjustment current setting that feedback information comprises, to reduce the error rate of receiving system.
In one embodiment, when carrying out pulse-amplitude modulation or pulse amplitude and phase combining to gray value information and modulating, corresponding modulation parameter is sent to receiving system, so that receiving system carries out demodulation.
According to a further aspect in the invention, a kind of method for realizing file transfer being provided, comprising:
Be captured on dispensing device screen by the image information that screen display is shown; Wherein dispensing device send fileinfo time, encode to generate bit information to described file, successively a continuous m bit information be mapped as corresponding gray value information, wherein m be more than or equal to 1 natural number; Gray value information is carried out divide into groups to obtain screen frame sequence, in same transmission cycle, on screen, wherein only show the gray value information in same screen frame, by shielding the gray value information shown successively in each screen frame;
Gray value in the image information gathered is mapped, to obtain corresponding bit information in each screen frame;
Bit information is decoded, to obtain the fileinfo that described dispensing device sends.
In one embodiment, the gray value in the image information gathered is mapped, comprises with the step obtaining corresponding bit information in each screen frame:
Utilize the modulation parameter that dispensing device provides, demodulation is carried out to the gray value in the image information gathered;
Gray value after demodulation is mapped, to obtain corresponding bit information in each screen frame.
In one embodiment, the current error rate is calculated according to the bit information received;
Judge whether the current error rate is greater than predetermined threshold;
If the current error rate is greater than predetermined threshold, then send feedback information to dispensing device, wherein feedback information comprises the current error rate, so that dispensing device carries out self-adaptative adjustment to adopted modulation parameter.
Another aspect provides a kind of dispensing device for realizing file transfer, comprising coding unit, the first map unit, grouped element and indicative control unit, wherein:
Coding unit, for when sending fileinfo, encodes to described file, to generate bit information;
First map unit, for successively a continuous m bit information being mapped as corresponding gray value information, wherein m be more than or equal to 1 natural number;
Grouped element, for being divided into groups by gray value information, to obtain screen frame sequence, wherein only shows the gray value information in same screen frame in same transmission cycle on screen;
Indicative control unit, for by shielding the gray value information shown successively in each screen frame, so that receiving system is captured in the image that screen shows, thus realizes described file to send to described receiving system.
In one embodiment, dispensing device also comprises modulation parameter setting unit, wherein:
Modulation parameter setting unit, for before transmission fileinfo, using the modulation parameter of predetermined pulse-amplitude modulation parameter as current setting;
Indicative control unit is also in the screen frame of display, utilizing the modulation parameter of current setting to carry out pulse-amplitude modulation to gray value information in current needs; In the transmission cycle corresponding with the current screen frame needing to show, the gray value information after modulation is presented on screen.
In one embodiment, modulation parameter setting unit also for before transmission fileinfo, using predetermined pulse-amplitude modulation parameter and the predetermined phase-modulation parameter modulation parameter as current setting;
Indicative control unit, also for needing in the screen frame of display current, utilizes the modulation parameter of current setting to carry out pulse amplitude and phase combining modulation to gray value information; In corresponding time slot in the transmission cycle corresponding with the current screen frame needing to show, the gray value information after modulation is presented on screen.
In one embodiment, dispensing device also comprises feedback information receiving element, wherein:
Feedback information receiving element, for the feedback information that receiving system sends;
Modulation parameter setting unit is also for receiving feedback information that receiving system sends during when feedback information receiving element, the modulation parameter of the error rate adjustment current setting comprised according to feedback information, to reduce the error rate of receiving system.
In one embodiment, dispensing device also comprises parameter transmitting element, wherein:
Parameter transmitting element, for when indicative control unit to gray value information carry out pulse-amplitude modulation or pulse amplitude and phase combining modulate time, corresponding modulation parameter is sent to receiving system, so that receiving system carries out demodulation.
According to a further aspect in the invention, providing a kind of receiving system for realizing file transfer, comprising collecting unit, the second map unit and decoding unit, wherein:
Collecting unit, for being captured on dispensing device screen by the image information that screen display is shown; Wherein dispensing device send fileinfo time, encode to generate bit information to described file, successively a continuous m bit information be mapped as corresponding gray value information, wherein m be more than or equal to 1 natural number; Gray value information is carried out divide into groups to obtain screen frame sequence, in same transmission cycle, on screen, wherein only show the gray value information in same screen frame, by shielding the gray value information shown successively in each screen frame;
Second map unit, for mapping the gray value in the image information gathered, to obtain corresponding bit information in each screen frame;
Decoding unit, for decoding to bit information, to obtain the fileinfo that described dispensing device sends.
In one embodiment, the modulation parameter that the second map unit specifically utilizes dispensing device to send, carries out demodulation to the gray value in the image information gathered; Gray value after demodulation is mapped, to obtain corresponding bit information in each screen frame.
In one embodiment, receiving system also comprises error rate calculation unit, recognition unit and feedback information transmitting element, wherein:
Error rate calculation unit, for calculating the current error rate according to the bit information received;
Recognition unit, for judging whether the current error rate is greater than predetermined threshold;
Feedback information transmitting element, for the judged result according to recognition unit, if the current error rate is greater than predetermined threshold, then send feedback information to dispensing device, wherein feedback information comprises the current error rate, so that dispensing device carries out self-adaptative adjustment to adopted modulation parameter.
According to a further aspect in the invention, a kind of system for realizing file transfer being provided, comprising dispensing device and receiving system, wherein:
Dispensing device is the dispensing device that above-mentioned any embodiment relates to;
Receiving system is the receiving system that above-mentioned any embodiment relates to.
In one embodiment, dispensing device and receiving system are mobile terminal.
The present invention realizes real-time data transmission by utilizing the mode of screen display and IMAQ, simplify transfer process, improve speed and the reliability of data-directed transmission, solve existing system and be easily disturbed the problem low with transmission rate, for transmitting and large market demand create condition.
Description of the invention provides in order to example with for the purpose of describing, and is not exhaustively or limit the invention to disclosed form.Many modifications and variations are obvious for the ordinary skill in the art.Selecting and describing embodiment is in order to principle of the present invention and practical application are better described, and enables those of ordinary skill in the art understand the present invention thus design the various embodiments with various amendment being suitable for special-purpose.
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 some embodiments of the present 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 these accompanying drawings.
Fig. 1 is that the present invention is for realizing the schematic diagram of a method embodiment of file transfer.
Fig. 2 is the schematic diagram that gray scale of the present invention shows an embodiment.
Fig. 3 is that the present invention is for realizing the schematic diagram of another embodiment of method of file transfer.
Fig. 4 is that the present invention is for realizing the schematic diagram of a dispensing device embodiment of file transfer.
Fig. 5 is that the present invention is for realizing the schematic diagram of another embodiment of dispensing device of file transfer.
Fig. 6 is that the present invention is for realizing the schematic diagram of a receiving system embodiment of file transfer.
Fig. 7 is that the present invention is for realizing the schematic diagram of another embodiment of receiving system of file transfer.
Fig. 8 is that the present invention is for realizing the schematic diagram of a system embodiment of file transfer.
Fig. 9 is the schematic diagram of a file transfer of the present invention embodiment.
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.Illustrative to the description only actually of at least one exemplary embodiment below, never as any restriction to the present invention and application or use.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.
Unless specifically stated otherwise, otherwise positioned opposite, the numerical expression of the parts of setting forth in these embodiments and step and numerical value do not limit the scope of the invention.
Meanwhile, it should be understood that for convenience of description, the size of the various piece shown in accompanying drawing is not draw according to the proportionate relationship of reality.
May not discuss in detail for the known technology of person of ordinary skill in the relevant, method and apparatus, but in the appropriate case, described technology, method and apparatus should be regarded as a part of authorizing specification.
In all examples with discussing shown here, any occurrence should be construed as merely exemplary, instead of as restriction.Therefore, other example of exemplary embodiment can have different values.
It should be noted that: represent similar terms in similar label and letter accompanying drawing below, therefore, once be defined in an a certain Xiang Yi accompanying drawing, then do not need to be further discussed it in accompanying drawing subsequently.
Fig. 1 is that the present invention is for realizing the schematic diagram of a method embodiment of file transfer.Preferably, the method step of the present embodiment can be performed by dispensing device.
Step 101, when sending fileinfo, encodes to described file, to generate bit information.
Step 102, is mapped as corresponding gray value information by a continuous m bit information successively, wherein m be more than or equal to 1 natural number.
Such as, can by bit combination " 00 " corresponding grey scale value A, bit combination " 01 " corresponding grey scale value B, bit combination " 10 " corresponding grey scale value C, bit combination " 11 " corresponding grey scale value D, bit stream " ... 10,00; 01; 11 ... " after ovennodulation corresponding be presented at color gray value on grid point for " ... C, A, B; D ... ", as shown in Figure 2.
Step 103, divides into groups gray value information, to obtain screen frame sequence, in same transmission cycle, on screen, wherein only shows the gray value information in same screen frame.
Step 104, by shielding the gray value information shown successively in each screen frame.
So that receiving system is captured in the image that screen shows, thus realize described file to send to described receiving system.
Based on the method for realizing file transfer that the above embodiment of the present invention provides, real-time data transmission is realized by utilizing the mode of screen display and IMAQ, simplify transfer process, improve speed and the reliability of data-directed transmission, solve existing system and be easily disturbed the problem low with transmission rate, for transmitting and large market demand create condition.
In one embodiment, before transmission fileinfo, also can comprise:
Using the modulation parameter of predetermined pulse-amplitude modulation parameter as current setting.
The above-mentioned step by shielding the gray value information shown successively in each screen frame comprises:
In the screen frame of display, the modulation parameter of current setting is utilized to carry out pulse-amplitude modulation to gray value information in current needs.In the transmission cycle corresponding with the current screen frame needing to show, the gray value information after modulation is presented on screen.
By pulse-amplitude modulation, the brightness of adjustable shown gray level image.
In one embodiment, before transmission fileinfo, also can comprise:
Using predetermined pulse-amplitude modulation parameter and the predetermined phase-modulation parameter modulation parameter as current setting.
The above-mentioned step by shielding the gray value information shown successively in each screen frame comprises:
Need in the screen frame of display current, utilize the modulation parameter of current setting to carry out pulse amplitude and phase combining modulation to gray value information.In corresponding time slot in the transmission cycle corresponding with the current screen frame needing to show, the gray value information after modulation is presented on screen.
By combined modulation, the interference of external environment can be suppressed further.Such as, pulse amplitude and the optional natural number being greater than 1 of number of phases, preferably, pulse amplitude and number of phases all can be selected in 2,3,4.
Because the modulation of pulse-amplitude modulation, pulse amplitude and phase combining is that those skilled in the art understand, therefore do not launch here to describe.
In one embodiment, when dispensing device receives the feedback information of receiving system transmission, according to the modulation parameter of the error rate adjustment current setting that feedback information comprises, to reduce the error rate of receiving system.
Wherein receiving system is when the current error rate is greater than predetermined threshold, sends feedback information, to realize the Automatic adjusument of modulation system to dispensing device.
Such as, receiving system can adopt bluetooth or infrared transmission mode that feedback information is sent to dispensing device.
Preferably, the corresponding relation list of error rate of system and system configuration parameter is configured with at dispensing device.When receiving the feedback information that receiving system sends, regulate according to current error rate paired pulses Modulation and Amplitude Modulation parameter and/or phase-modulation parameter, mode such as by tabling look-up finds relevant system parameter values, thus contributes to the error performance improving receiving system.
In one embodiment, when carrying out pulse-amplitude modulation or pulse amplitude and phase combining to gray value information and modulating, corresponding modulation parameter is sent to receiving system, so that receiving system carries out demodulation.
In order to make the correct demodulation of receiving system, dispensing device needs the modulation parameter of current use to inform to receiving system.
Fig. 3 is that the present invention is for realizing the schematic diagram of another embodiment of method of file transfer.Preferably, the method step of the present embodiment can be performed by receiving system.
Step 301, is captured on dispensing device screen by the image information that screen display is shown.
Wherein dispensing device send fileinfo time, encode to generate bit information to described file, successively a continuous m bit information be mapped as corresponding gray value information, wherein m be more than or equal to 1 natural number; Gray value information is carried out divide into groups to obtain screen frame sequence, in same transmission cycle, on screen, wherein only show the gray value information in same screen frame, by shielding the gray value information shown successively in each screen frame.
Step 302, maps the gray value in the image information gathered, to obtain corresponding bit information in each screen frame.
Step 303, decodes to bit information, to obtain the fileinfo that described dispensing device sends.
Based on the method for realizing file transfer that the above embodiment of the present invention provides, real-time data transmission is realized by utilizing the mode of screen display and IMAQ, simplify transfer process, improve speed and the reliability of data-directed transmission, solve existing system and be easily disturbed the problem low with transmission rate, for transmitting and large market demand create condition.
In one embodiment, the gray value in the above-mentioned image information to gathering maps, and can comprise with the step obtaining corresponding bit information in each screen frame:
Utilize the modulation parameter that dispensing device provides, demodulation is carried out to the gray value in the image information gathered.Gray value after demodulation is mapped, to obtain corresponding bit information in each screen frame.
That is, for the information through ovennodulation, first carry out corresponding demodulation, and then be mapped as corresponding bit information.
In another embodiment, also the current error rate can be calculated according to the bit information received.Judge whether the current error rate is greater than predetermined threshold.If the current error rate is greater than predetermined threshold, then send feedback information to dispensing device, wherein feedback information comprises the current error rate, so that dispensing device carries out self-adaptative adjustment to adopted modulation parameter.
Receiving system can adopt various ways to calculate the error rate, such as, judge detecting information, or judge according to the check information in information.Because this is the technological means that those skilled in the art commonly use, therefore do not launch this here to describe.
Fig. 4 is that the present invention is for realizing the schematic diagram of a dispensing device embodiment of file transfer.As shown in Figure 4, dispensing device can comprise coding unit 401, first map unit 402, grouped element 403 and indicative control unit 404.Wherein:
Coding unit 401, for when sending fileinfo, encodes to described file, to generate bit information.
First map unit 402, for successively a continuous m bit information being mapped as corresponding gray value information, wherein m be more than or equal to 1 natural number.
Grouped element 403, for being divided into groups by gray value information, to obtain screen frame sequence, wherein only shows the gray value information in same screen frame in same transmission cycle on screen.
Indicative control unit 404, for by shielding the gray value information shown successively in each screen frame, so that receiving system is captured in the image that screen shows, thus realizes described file to send to described receiving system.
Based on the dispensing device that the above embodiment of the present invention provides, real-time data transmission is realized by utilizing the mode of screen display and IMAQ, simplify transfer process, improve speed and the reliability of data-directed transmission, solve existing system and be easily disturbed the problem low with transmission rate, for transmitting and large market demand create condition.
Fig. 5 is that the present invention is for realizing the schematic diagram of another embodiment of dispensing device of file transfer.Compared with embodiment illustrated in fig. 4, in the embodiment shown in fig. 5, dispensing device also comprises modulation parameter setting unit 501.Wherein:
Modulation parameter setting unit 501, for before transmission fileinfo, using the modulation parameter of predetermined pulse-amplitude modulation parameter as current setting.
Indicative control unit 404 is also in the screen frame of display, utilizing the modulation parameter of current setting to carry out pulse-amplitude modulation to gray value information in current needs; In the transmission cycle corresponding with the current screen frame needing to show, the gray value information after modulation is presented on screen.
That is, pulse-amplitude modulation can be carried out to information.
In another embodiment, modulation parameter setting unit 501 also for before transmission fileinfo, using predetermined pulse-amplitude modulation parameter and the predetermined phase-modulation parameter modulation parameter as current setting.
Indicative control unit 403, also for needing in the screen frame of display current, utilizes the modulation parameter of current setting to carry out pulse amplitude and phase combining modulation to gray value information; In corresponding time slot in the transmission cycle corresponding with the current screen frame needing to show, the gray value information after modulation is presented on screen.
That is, pulse amplitude and phase combining modulation can be carried out to information.
Preferably, dispensing device also can comprise feedback information receiving element 502.Wherein:
Feedback information receiving element 502, for the feedback information that receiving system sends.Wherein receiving system sends feedback information when judging that current error rate is greater than predetermined threshold, so that dispensing device carries out Automatic adjusument to modulation parameter.
Modulation parameter setting unit 501 is also for receiving feedback information that receiving system sends during when feedback information receiving element 502, the modulation parameter of the error rate adjustment current setting comprised according to feedback information, to reduce the error rate of receiving system.
Preferably, in one embodiment, dispensing device also comprises parameter transmitting element 503.Wherein:
Parameter transmitting element 503, for when indicative control unit to gray value information carry out pulse-amplitude modulation or pulse amplitude and phase combining modulate time, corresponding modulation parameter is sent to receiving system, so that receiving system carries out demodulation.
Fig. 6 is that the present invention is for realizing the schematic diagram of a receiving system embodiment of file transfer.As shown in Figure 6, receiving system can comprise collecting unit 601, second map unit 602 and decoding unit 603.Wherein:
Collecting unit 601, for being captured on dispensing device screen by the image information that screen display is shown.
Wherein dispensing device send fileinfo time, encode to generate bit information to described file, successively a continuous m bit information be mapped as corresponding gray value information, wherein m be more than or equal to 1 natural number; Gray value information is carried out divide into groups to obtain screen frame sequence, in same transmission cycle, on screen, wherein only show the gray value information in same screen frame, by shielding the gray value information shown successively in each screen frame.
Second map unit 602, for mapping the gray value in the image information gathered, to obtain corresponding bit information in each screen frame.
Decoding unit 603, for decoding to bit information, to obtain the fileinfo that described dispensing device sends.
Based on the receiving system that the above embodiment of the present invention provides, real-time data transmission is realized by utilizing the mode of screen display and IMAQ, simplify transfer process, improve speed and the reliability of data-directed transmission, solve existing system and be easily disturbed the problem low with transmission rate, for transmitting and large market demand create condition.
In one embodiment, the modulation parameter that the second map unit 602 specifically utilizes dispensing device to send, carries out demodulation to the gray value in the image information gathered; Gray value after demodulation is mapped, to obtain corresponding bit information in each screen frame.
Fig. 7 is that the present invention is for realizing the schematic diagram of another embodiment of receiving system of file transfer.Compared with embodiment illustrated in fig. 6, receiving system also comprises error rate calculation unit 701, recognition unit 702 and feedback information transmitting element 703.Wherein:
Error rate calculation unit 701, for calculating the current error rate according to the bit information received.
Recognition unit 702, for judging whether the current error rate is greater than predetermined threshold.
Feedback information transmitting element 703, for the judged result according to recognition unit 702, if the current error rate is greater than predetermined threshold, then send feedback information to dispensing device, wherein feedback information comprises the current error rate, so that dispensing device carries out self-adaptative adjustment to adopted modulation parameter.
Fig. 8 is that the present invention is for realizing the schematic diagram of a system embodiment of file transfer.As shown in Figure 8, this system comprises dispensing device 801 and receiving system 802.Wherein:
Dispensing device 801 is the dispensing device that in Fig. 4-Fig. 5, any embodiment relates to, and receiving system is the receiving system that in Fig. 6-Fig. 7, any embodiment relates to.
Based on the system that the above embodiment of the present invention provides, real-time data transmission is realized by utilizing the mode of screen display and IMAQ, simplify transfer process, improve speed and the reliability of data-directed transmission, solve existing system and be easily disturbed the problem low with transmission rate, for transmitting and large market demand create condition.
Preferably, dispensing device and receiving system can be mobile terminal.
Fig. 9 is the schematic diagram of a file transfer of the present invention embodiment.As shown in Figure 9, transmitting terminal, when sending fileinfo, is encoded to described file, to generate bit information.Successively a continuous m bit information is mapped as corresponding gray value information, gray value information is divided into groups, to obtain screen frame sequence, by shielding the gray value information shown successively in each screen frame.Receiving system is captured in the image that screen shows, thus realizes described file to send to described receiving system.Wherein in Fig. 9, the latter half gives the schematic diagram of available pulse amplitude modulation and phase-modulation.
By implementing the present invention, following beneficial effect can be obtained:
1. by pulse amplitude and phase place hybrid modulation, improve unit grids internal information capacity, owing to possessing position modulation attribute, bias light interference can be reduced.
2. utilize new and effective compound modulation, do not need special equipment support, directly can realize reliable information transfer on the intelligent terminals such as mobile phone.
3. according to ambient interferences degree, can real-time regulating system modulation parameter, improve reliability.
One of ordinary skill in the art will appreciate that all or part of step realizing above-described embodiment can have been come by hardware, the hardware that also can carry out instruction relevant by program completes, described program can be stored in a kind of computer-readable recording medium, the above-mentioned storage medium mentioned can be read-only memory, disk or CD etc.
Claims (18)
1. for realizing a method for file transfer, it is characterized in that, comprising:
When sending fileinfo, described file is encoded, to generate bit information;
Successively a continuous m bit information is mapped as corresponding gray value information, wherein m be more than or equal to 1 natural number;
Gray value information is divided into groups, to obtain screen frame sequence, in same transmission cycle, on screen, wherein only shows the gray value information in same screen frame;
By shielding the gray value information shown successively in each screen frame, so that receiving system is captured in the image that screen shows, thus realize described file to send to described receiving system.
2. method according to claim 1, is characterized in that,
Before transmission fileinfo, also comprise:
Using the modulation parameter of predetermined pulse-amplitude modulation parameter as current setting;
Comprise by the step of shielding the gray value information shown successively in each screen frame:
In the screen frame of display, the modulation parameter of current setting is utilized to carry out pulse-amplitude modulation to gray value information in current needs;
In the transmission cycle corresponding with the current screen frame needing to show, the gray value information after modulation is presented on screen.
3. method according to claim 1, is characterized in that,
Before transmission fileinfo, also comprise:
Using predetermined pulse-amplitude modulation parameter and the predetermined phase-modulation parameter modulation parameter as current setting;
Comprise by the step of shielding the gray value information shown successively in each screen frame:
Need in the screen frame of display current, utilize the modulation parameter of current setting to carry out pulse amplitude and phase combining modulation to gray value information;
In corresponding time slot in the transmission cycle corresponding with the current screen frame needing to show, the gray value information after modulation is presented on screen.
4. according to the method in claim 2 or 3, it is characterized in that,
When receiving the feedback information that receiving system sends, according to the modulation parameter of the error rate adjustment current setting that feedback information comprises, to reduce the error rate of receiving system.
5. method according to claim 4, is characterized in that,
When carrying out pulse-amplitude modulation or pulse amplitude and phase combining to gray value information and modulating, corresponding modulation parameter is sent to receiving system, so that receiving system carries out demodulation.
6. for realizing a method for file transfer, it is characterized in that, comprising:
Be captured on dispensing device screen by the image information that screen display is shown; Wherein dispensing device send fileinfo time, encode to generate bit information to described file, successively a continuous m bit information be mapped as corresponding gray value information, wherein m be more than or equal to 1 natural number; Gray value information is carried out divide into groups to obtain screen frame sequence, in same transmission cycle, on screen, wherein only show the gray value information in same screen frame, by shielding the gray value information shown successively in each screen frame;
Gray value in the image information gathered is mapped, to obtain corresponding bit information in each screen frame;
Bit information is decoded, to obtain the fileinfo that described dispensing device sends.
7. method according to claim 6, is characterized in that,
Gray value in the image information gathered is mapped, comprises with the step obtaining corresponding bit information in each screen frame:
Utilize the modulation parameter that dispensing device provides, demodulation is carried out to the gray value in the image information gathered;
Gray value after demodulation is mapped, to obtain corresponding bit information in each screen frame.
8. method according to claim 7, is characterized in that, also comprises:
The current error rate is calculated according to the bit information received;
Judge whether the current error rate is greater than predetermined threshold;
If the current error rate is greater than predetermined threshold, then send feedback information to dispensing device, wherein feedback information comprises the current error rate, so that dispensing device carries out self-adaptative adjustment to adopted modulation parameter.
9. for realizing a dispensing device for file transfer, it is characterized in that, comprising coding unit, the first map unit, grouped element and indicative control unit, wherein:
Coding unit, for when sending fileinfo, encodes to described file, to generate bit information;
First map unit, for successively a continuous m bit information being mapped as corresponding gray value information, wherein m be more than or equal to 1 natural number;
Grouped element, for being divided into groups by gray value information, to obtain screen frame sequence, wherein only shows the gray value information in same screen frame in same transmission cycle on screen;
Indicative control unit, for by shielding the gray value information shown successively in each screen frame, so that receiving system is captured in the image that screen shows, thus realizes described file to send to described receiving system.
10. dispensing device according to claim 9, is characterized in that, also comprises modulation parameter setting unit, wherein:
Modulation parameter setting unit, for before transmission fileinfo, using the modulation parameter of predetermined pulse-amplitude modulation parameter as current setting;
Indicative control unit is also in the screen frame of display, utilizing the modulation parameter of current setting to carry out pulse-amplitude modulation to gray value information in current needs; In the transmission cycle corresponding with the current screen frame needing to show, the gray value information after modulation is presented on screen.
11. dispensing devices according to claim 10, is characterized in that,
Modulation parameter setting unit also for before transmission fileinfo, using predetermined pulse-amplitude modulation parameter and the predetermined phase-modulation parameter modulation parameter as current setting;
Indicative control unit, also for needing in the screen frame of display current, utilizes the modulation parameter of current setting to carry out pulse amplitude and phase combining modulation to gray value information; In corresponding time slot in the transmission cycle corresponding with the current screen frame needing to show, the gray value information after modulation is presented on screen.
12. dispensing devices according to claim 10 or 11, is characterized in that, also comprise feedback information receiving element, wherein:
Feedback information receiving element, for the feedback information that receiving system sends;
Modulation parameter setting unit is also for receiving feedback information that receiving system sends during when feedback information receiving element, the modulation parameter of the error rate adjustment current setting comprised according to feedback information, to reduce the error rate of receiving system.
13. dispensing devices according to claim 12, is characterized in that, also comprise parameter transmitting element, wherein:
Parameter transmitting element, for when indicative control unit to gray value information carry out pulse-amplitude modulation or pulse amplitude and phase combining modulate time, corresponding modulation parameter is sent to receiving system, so that receiving system carries out demodulation.
14. 1 kinds, for realizing the receiving system of file transfer, is characterized in that, comprise collecting unit, the second map unit and decoding unit, wherein:
Collecting unit, for being captured on dispensing device screen by the image information that screen display is shown; Wherein dispensing device send fileinfo time, encode to generate bit information to described file, successively a continuous m bit information be mapped as corresponding gray value information, wherein m be more than or equal to 1 natural number; Gray value information is carried out divide into groups to obtain screen frame sequence, in same transmission cycle, on screen, wherein only show the gray value information in same screen frame, by shielding the gray value information shown successively in each screen frame;
Second map unit, for mapping the gray value in the image information gathered, to obtain corresponding bit information in each screen frame;
Decoding unit, for decoding to bit information, to obtain the fileinfo that described dispensing device sends.
15. receiving systems according to claim 14, is characterized in that,
The modulation parameter that second map unit specifically utilizes dispensing device to send, carries out demodulation to the gray value in the image information gathered; Gray value after demodulation is mapped, to obtain corresponding bit information in each screen frame.
16. receiving systems according to claim 15, is characterized in that, also comprise error rate calculation unit, recognition unit and feedback information transmitting element, wherein:
Error rate calculation unit, for calculating the current error rate according to the bit information received;
Recognition unit, for judging whether the current error rate is greater than predetermined threshold;
Feedback information transmitting element, for the judged result according to recognition unit, if the current error rate is greater than predetermined threshold, then send feedback information to dispensing device, wherein feedback information comprises the current error rate, so that dispensing device carries out self-adaptative adjustment to adopted modulation parameter.
17. 1 kinds, for realizing the system of file transfer, is characterized in that, comprise dispensing device and receiving system, wherein:
Dispensing device, the dispensing device related to any one of claim 9-13;
Receiving system, the receiving system related to any one of claim 14-16.
18. systems according to claim 17, is characterized in that,
Dispensing device and receiving system are mobile terminal.
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