WO2014023197A1 - 一种数据传输方法及设备 - Google Patents
一种数据传输方法及设备 Download PDFInfo
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- WO2014023197A1 WO2014023197A1 PCT/CN2013/080773 CN2013080773W WO2014023197A1 WO 2014023197 A1 WO2014023197 A1 WO 2014023197A1 CN 2013080773 W CN2013080773 W CN 2013080773W WO 2014023197 A1 WO2014023197 A1 WO 2014023197A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
- H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
- H04N19/186—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being a colour or a chrominance component
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/00127—Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture
- H04N1/00347—Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture with another still picture apparatus, e.g. hybrid still picture apparatus
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
- H04N19/134—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
- H04N19/136—Incoming video signal characteristics or properties
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
- H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
- H04N19/177—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being a group of pictures [GOP]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/44—Decoders specially adapted therefor, e.g. video decoders which are asymmetric with respect to the encoder
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/18—Information format or content conversion, e.g. adaptation by the network of the transmitted or received information for the purpose of wireless delivery to users or terminals
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2200/00—Indexing scheme for image data processing or generation, in general
- G06T2200/16—Indexing scheme for image data processing or generation, in general involving adaptation to the client's capabilities
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/10—Image acquisition modality
- G06T2207/10024—Color image
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2210/00—Indexing scheme for image generation or computer graphics
- G06T2210/32—Image data format
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
- H04N2201/0008—Connection or combination of a still picture apparatus with another apparatus
- H04N2201/0065—Converting image data to a format usable by the connected apparatus or vice versa
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/20—Services signaling; Auxiliary data signalling, i.e. transmitting data via a non-traffic channel
- H04W4/21—Services signaling; Auxiliary data signalling, i.e. transmitting data via a non-traffic channel for social networking applications
Definitions
- the present invention relates to the field of communications technologies, and in particular, to a data transmission method and device. Background technique
- Bluetooth, Wi-Fi, infrared and other data transmission methods need to add corresponding communication modules on the mobile terminal to support data communication.
- ISM Industrial Scientific Medical
- ISM band is an open band that may be subject to interference from signals such as microwave ovens, cordless phones, scientific instruments, industrial equipment, or medical equipment.
- Wi-Fi needs to be connected to the same AP (Wireless Access Point) at the same time, and many mobile terminals do not support point-to-point connections.
- Embodiments of the present invention provide a data transmission method and device, which are used to solve the problem that data transmission between existing terminals needs to be realized by using other communication modules, and the problem of transmission interference, thereby realizing the convenience and effectiveness of data transmission between terminals. .
- An embodiment of the present invention provides a data transmission method, where the method includes:
- the first terminal collects a picture displayed on the display screen of the second terminal by using an image capturing module; the picture is generated by encoding the binary data of the file to be transmitted by the second terminal, and is displayed on a display screen of the second terminal
- the plurality of color gradations of the pixels of the picture correspond to corresponding binary data;
- the first terminal decodes the collected picture to obtain binary data, and restores the corresponding file according to the obtained binary data.
- the embodiment of the invention further provides a data transmission method, the method comprising:
- the first terminal encodes the binary data of the file to be transmitted, and generates a picture according to the coding result, where the plurality of color gradations of the pixels of the picture correspond to the corresponding binary data;
- the first terminal displays the generated picture on the display screen, so that the opposite terminal collects the image through the image acquisition module, obtains binary data according to the collected picture, and restores the corresponding file according to the decoded binary data.
- the embodiment of the invention further provides a terminal, including:
- An image acquisition module configured to collect a picture displayed on a display screen of the opposite terminal; the picture is generated by encoding a binary data of a file to be transmitted by the opposite terminal, and displayed on a display screen of the opposite terminal, The plurality of color gradations of the pixels of the picture correspond to corresponding binary data;
- a decoding module configured to decode the image collected by the image acquisition module to obtain binary data
- a file generating module configured to restore the corresponding file according to the binary data obtained by the decoding module.
- the embodiment of the invention further provides a terminal, including:
- An encoding module configured to encode binary data to be transmitted, and generate a picture according to the encoded result, where multiple color gradations of the pixels of the picture correspond to corresponding binary data;
- a display module configured to display the image generated by the encoding module on the display screen, so that the peer terminal collects through the image acquisition module, decodes the obtained image according to the collected image, and obtains binary data according to the decoded binary data.
- the corresponding file is available.
- the embodiment of the invention further provides a file transmission method, including:
- the one or more pictures are generated by encoding the file to be transmitted.
- the embodiment of the invention further provides a file output method, including:
- Displaying the one or more pictures in sequence such that the receiving terminal performs an acquisition operation and a decoding operation for each of the one or more pictures to obtain decoded data of the one or more pictures, and according to The decoded data of the one or more pictures obtains the file to be transmitted.
- the embodiment of the invention further provides a receiving terminal, including:
- a camera for performing an acquisition operation for each of one or more pictures sequentially displayed by the output terminal
- a processor configured to perform a decoding operation on each of the one or more pictures to obtain decoded data of the one or more pictures; obtain a to-be-transmitted according to the decoded data of the one or more pictures file; The one or more pictures are generated by encoding the file to be transmitted.
- An embodiment of the present invention further provides an output terminal, including:
- a processor for encoding a file to be transmitted to generate one or more pictures
- a display screen configured to sequentially display the one or more pictures, such that the receiving terminal performs an acquisition operation and a decoding operation for each of the one or more pictures to obtain decoding of the one or more pictures Data, and obtaining the file to be transmitted according to the decoded data of the one or more pictures.
- the data method and device provided by the embodiment of the present invention by encoding the binary data of the file to be transmitted by the terminal to generate a picture, are displayed on the display screen, and the plurality of color gradations of the pixels of the picture correspond to the corresponding binary data, and the opposite terminal After the image is collected by the image acquisition module, the image is decoded to obtain binary data, and the corresponding file is restored according to the obtained binary data, thereby realizing data transmission between the terminals.
- the embodiment of the invention does not need to add an additional communication module on the terminal, thereby saving manufacturing cost; collecting images through the image acquisition module, avoiding electromagnetic radiation and electromagnetic interference problems caused by existing Bluetooth and Wi-Fi transmission modes, and the operation is more convenient effective.
- FIG. 1 is a schematic flowchart of a data transmission method according to an embodiment of the present invention.
- FIG. 2 is a schematic structural diagram of a terminal device according to an embodiment of the present invention.
- FIG. 3 is a second schematic structural diagram of a terminal device according to an embodiment of the present disclosure.
- FIG. 4 shows a flow chart of a file output method in accordance with one embodiment of the present invention.
- FIG. 5 shows a flow chart of a file transfer method in accordance with one embodiment of the present invention.
- Figure 6a illustrates the sequence of execution of acquisition and decoding operations for four pictures in accordance with one embodiment of the present invention.
- Figure 6b shows the execution sequence of the acquisition and decoding operations of four pictures in accordance with another embodiment of the present invention.
- Figure 6c illustrates an execution sequence of acquisition operations and decoding operations for four pictures in accordance with yet another embodiment of the present invention. detailed description
- the embodiment of the invention provides a data transmission method, which is applied to a process of file transmission between terminals.
- the terminal 1 transmits a file to the terminal 2.
- the basic configuration of the terminal 1 and the terminal 2 is as follows:
- the terminal 1 has a display screen of at least 480*360 pixels and 18-bit true color, and the opposite terminal (terminal 2) has an image.
- the acquisition module (for example, a camera), the image acquisition module is at least 2 million pixels, and the terminal 1 and the terminal 2 can be a mobile phone, a PC, a television, or the like.
- the graphic encoding software is installed on the terminal 1 to encode the file to be transmitted into a picture, and the file to be transmitted can be any file in any format, including: an audio file (for example, an mp3, wav format audio file), a video file (for example, Rm, mpeg, A video file in avi format), a text file (such as a text file in txt format), etc.; a corresponding graphics decoding software is installed on the terminal 2 for decoding the captured image.
- the graphics codec software may include picture codec software of various formats such as bmp, jpg, tif, psd, etc. In the embodiment of the present invention, a graphics codec software supporting the bmp picture coding protocol is selected.
- the graphic encoding software installed thereon is started; when the terminal 2 is initialized, the graphic decoding software installed thereon is started, and the camera is turned on. If the file to be transmitted needs to be transmitted from the terminal 1 to the terminal 2, the terminal 2 is adjusted.
- the camera corresponds to the display screen of the terminal 1, and adjusts the distance between the terminal 1 and the terminal 2 so that the camera can clearly capture the picture displayed on the display of the terminal 1.
- the data transmission process provided by the embodiment of the present invention is described in detail below with reference to FIG. 1. As shown in the figure, the process includes:
- Step 101 The terminal 1 encodes the file to be transmitted by using the graphic coding software, generates at least one picture, and displays it on the display screen.
- the terminal 1 is recognized as a string of binary data, and the terminal 1 encodes the file to be transmitted and generates a picture by using the graphic coding software, the picture is binary data, and the plurality of color gradations of the picture pixel correspond to the corresponding binary. data.
- the graphic encoding software of the terminal 1 encodes one or more pictures, and the size of each picture is related to the resolution and the gradation index of the terminal display. If the terminal 1 generates a plurality of pictures, the picture frame switching is performed on the display screen according to the preset frequency.
- the terminal 1 is installed with bmp graphics coding software, and the picture generated by the terminal 1 coding can be displayed in the form of a bitmap on the display screen of the terminal 1.
- the point from the top left column of the first row is the first pixel
- the second row of the first row is the second pixel
- Each pixel can display red, green, and blue colors and their combinations.
- the color scale of each color ranges from [0, 255].
- the terminal 1 encodes the binary data of the file to be transmitted to generate a picture, specifically:
- the first, second, and third pixels of the picture are used to carry the color gradation check code, and the terminal 1 encodes the binary data of the gradation check code to be transmitted, and according to the encoded gradation check code data, in the picture Set the gradation value of the gradation check code on 1, 2, and 3 pixels.
- the first, second, and third pixels respectively display the gradation values of the three colors of red, green, and blue, so that the terminal 2 performs the gradation correction after decoding the picture, and ensures that the two terminals transmitting the data encode the same color. .
- the 4th, 5th, and 6th pixels of the picture are used to carry the check code, and the terminal 1 encodes the binary data of the file check code to be transmitted, and according to the coded check code data, the 4th, 5th, and 6th pixels in the picture
- the gradation value of the check code is set for the terminal 2 to verify the picture and verify the consistency of the codec data.
- the seventh pixel of the picture is used to carry the picture number and the total number of pictures, and the terminal 1 encodes the binary data of the picture number and the total number of pictures to be transmitted, and according to the encoded picture number and the total number of pictures, on the seventh pixel of the picture.
- Set the gradation value of the picture number and the total number of pictures which is used to indicate the total number of generated pictures and the position of the current picture relative to all pictures (for example, the picture is the mth picture of all n pictures).
- the 7th pixel of the picture can also be used to carry only the picture sequence number information, and the terminal 1 encodes the binary data of the picture number of the transmission file.
- the code, and according to the encoded picture number data set the gradation value of the picture number on the 7th pixel of the picture, so that the terminal 2 assembles the plurality of binary data generated by the picture decoding according to the picture number.
- the 8th pixel to the 172800th pixel of the picture (172793 pixels in total) is used to carry the file data of the file to be transmitted, and the terminal 1 encodes the file binary data of the file to be transmitted, and according to the encoded file data, in the picture Set the level value of the file data on 7 pixels.
- the 8th pixel of the picture may be reserved as an extended pixel for indicating an operation instruction (for example, starting transmission, stopping transmission, switching the next picture, etc.) for the terminal 2 to decode the picture, according to the control.
- the information is sent to the terminal 1 with a control command to perform an operation on the picture.
- Step 102 The terminal 2 takes a picture of the display screen of the terminal 1 through the camera, and collects the picture displayed on the display screen of the terminal 1.
- Step 103 The terminal 2 decodes the collected picture to generate binary data.
- the terminal 1 in the process of encoding the file to be transmitted, the terminal 1 generates file data (binary data corresponding to the 8th pixel to the 172800th pixel) in addition to the file to be transmitted, and also generates various attributes in the corresponding pixel positions.
- the data binary data corresponding to the 1st-7th pixel
- the terminal 2 decodes the first, second, and third pixels of the picture to obtain binary data of the color gradation proof code, and decodes the fourth, fifth, and sixth pixels of the picture to obtain binary data of the check code, and the picture is
- the seventh pixel is decoded to obtain binary data of the picture number (or the picture number and the total number of pictures), and the 8-172800 pixels of the picture are decoded to obtain binary data of the file.
- the terminal 2 compares the binary data of the decoded color scale proofreading code with the binary data of the standard color gradation (standard color gradation of three colors of red, green, and blue), and calculates the color scale proofreading of the first, second, and third pixels. difference.
- the terminal 2 corrects the binary data of the decoded file (the binary data corresponding to the picture 8-172800 pixels) based on the difference of the gradation of the three pixels, and obtains the binary data of the collated file.
- the first pixel color scale proofreading difference binary data of the first pixel gradation - binary data of the first pixel standard gradation
- second pixel gradation proofreading binary data of the second pixel gradation - the second pixel standard Binary data of gradation
- 3rd pixel gradation correction binary data of 3rd pixel gradation - binary data of 3rd pixel standard gradation.
- the terminal 2 splices the gradation binary data of each pixel of the proofed picture to obtain the binary data of the collated file.
- the terminal 2 decodes the picture, and the obtained binary data of the picture; if the terminal 1 encodes the file to be transmitted and generates a plurality of pictures, The terminal 2 decodes the plurality of pictures to generate binary data of a plurality of pictures.
- Step 104 The terminal 2 calculates a check code for the binary data of the decoded file, and compares the calculated check code with the check code data of the collected picture. If not, perform step 103; otherwise, execute Step 105. Specifically, the terminal 2 decodes the binary data of the check code according to the 4th, 5th, and 6th pixels of the picture, and calculates the check code by using the binary inverse code summation algorithm, ⁇ , and the terminal 2 sets the check code field (4th, 5th, 5th, The binary data of the 6-pixel corresponding binary data is set to 0, and then the binary inversion of each 16-bit of the binary data corresponding to the 1-172800 pixel is performed and summed, if the value of the check code exceeds the hexadecimal 0x0000-0x3fff For the range, the inverse code is used as the check code; the terminal 2 judges the calculated check code and the check code data of the collected picture (the gradation value binary data of the check code corresponding to the 4th, 5th,
- Step 105 The terminal 2 determines whether the currently collected picture is the last picture, and if yes, performs step 106; otherwise, performs step 108.
- the terminal 2 can determine whether the currently collected picture is the last picture by using information carried by the seventh pixel of the picture. For example, if the terminal 2 determines that the picture number obtained by decoding the 7th pixel of the picture is equal to the binary data of the total number of pictures, the picture is the last picture (including: the case where the terminal 1 code only generates one picture, and the current picture is generated) In the case of the last picture of the plurality of pictures), step 106 is performed. If the terminal 2 determines that the picture number obtained by decoding the 7th pixel of the picture is not equal to the binary data of the total number of pictures, indicating that the currently collected picture is not the last picture, step 107 is performed.
- Step 106 The terminal 2 restores the corresponding file according to the binary data generated by the picture decoding.
- the terminal 1 encodes a file to be transmitted, one picture is generated, and the terminal 2 decodes the picture, and the obtained binary data of the picture is binary data of the corresponding file (file to be transmitted);
- the terminal 1 is to be transmitted File encoding, a plurality of pictures are generated, and the terminal 2 decodes the generated plurality of pictures, generates binary data of a plurality of files, and obtains binary data of the picture number obtained according to the 7th pixel of the picture, and according to the picture 8-172800
- the binary data of the file decoded by the pixel is assembled according to the picture number, and the binary data of the plurality of files is assembled, and the corresponding file is restored, thereby realizing the data (the file to be transmitted) is transmitted from the terminal 1 to the terminal 2.
- the terminal 2 When the terminal 2 restores the corresponding file, the graphics decoding software is turned off, and an audio signal is sent to notify the terminal 1 to turn off the graphic encoding software.
- the terminal 2 sends an audio signal to the terminal 1 through the speaker, notifying the terminal 1 that the file transmission is completed, and after receiving the audio signal through the microphone, the terminal 1 turns off the graphic encoding software.
- the audio signal can be an acoustic signal (20Hz-20000Hz) audible to the human ear.
- it can also be an ultrasonic signal greater than 20000Hz.
- the ultrasonic signal can avoid noise generation and can be applied to environments with strict environmental requirements.
- Step 107 The terminal 2 sends a signal to the terminal 1 to request the terminal 1 to display the next picture on the display screen, and performs step 102.
- the terminal 2 sends an audio signal to the terminal 1 through the speaker, requesting the terminal 1 to switch the next picture, and after receiving the audio signal, the terminal 1 displays the next picture on the display screen, so that the camera of the terminal 2 can collect the same picture.
- the audio signal may be an acoustic signal (20 Hz - 20000 Hz) audible to the human ear, preferably an ultrasonic signal greater than 20,000 Hz.
- the terminal 1 when the terminal 1 encodes the file to be transmitted, it may only The file data to be transmitted is encoded, that is, the file data to be transmitted is carried in the 8-178200 pixel of the picture, and may also be encoded by combining one of the color gradation check code, the check code, the picture number, and the total number of pictures or a combination thereof.
- the terminal 2 when the terminal 2 decodes the collected picture, the corresponding pixel is decoded according to the encoding of the terminal 1.
- step 104, BP is omitted, and the terminal 2 decodes the picture 8-172800 pixels, obtains the binary data of the file, and decodes the seventh pixel of the picture to obtain the binary of the picture number.
- Data when the terminal 1 is encoded, the 7th pixel contains only the picture number information), and the binary data of the obtained file is restored to the corresponding file according to the binary data of the picture number.
- the terminal 1 presets the display period of the displayed picture. For example, setting 5S as a display period, switching the next picture every 5S, the terminal 2
- the threshold can be set (the threshold is greater than the display period), for example, 8S is set.
- the time when the terminal 2 collects 1 picture exceeds 8S, and the next picture is not collected the picture can be regarded as the last picture.
- step 103 the process of color scale proofreading is omitted, and the binary data of the file is decoded directly according to the level-level binary data of the 8-182800 pixels of the acquired picture.
- the data transmission scheme of the embodiment of the present invention is not limited to only between two mobile phones, and can be applied between any terminal that conforms to the basic configuration, such as between a computer and a mobile phone, a mobile phone, and a television.
- the data method and device provided by the embodiment of the present invention by encoding the binary data of the file to be transmitted by the terminal to generate a picture, are displayed on the display screen, and the plurality of color gradations of the pixels of the picture correspond to the corresponding binary data, and the opposite terminal After the image is collected by the image acquisition module, the image is decoded to obtain binary data, and the corresponding file is restored according to the obtained binary data, thereby realizing data transmission between the terminals.
- the embodiment of the invention does not need to add an additional communication module on the terminal, thereby saving manufacturing cost; collecting images through the image acquisition module, avoiding electromagnetic radiation and electromagnetic interference problems caused by existing Bluetooth and Wi-Fi transmission modes, and the operation is more convenient effective.
- the embodiment of the present invention further provides a terminal.
- the terminal includes: an image collection module 21, configured to collect a picture displayed on a display screen of the opposite terminal, where the picture is treated by the opposite terminal.
- the binary data of the transmission file is encoded and displayed on the display screen of the opposite terminal, and the plurality of color gradations of the pixels of the picture correspond to the corresponding binary data.
- the decoding module 22 is configured to decode the image collected by the image acquisition module 21 to obtain binary data.
- the file generating module 23 is configured to restore the corresponding file according to the binary data obtained by the decoding module 22.
- the decoding module 22 is specifically configured to decode the pixel for carrying the check code at the set position of the picture, obtain binary data of the check code, and decode the pixel for carrying the file data at the set position of the picture. , get the binary data of the file.
- the file generating module 23 is configured to check the binary data of the file according to the binary data of the check code decoded by the decoding module 22, and restore the corresponding file according to the binary data of the file after the verification is passed.
- the decoding module 22 is specifically configured to decode the pixels used to carry the picture sequence number and the total number of pictures in the set position of the picture, obtain binary data of the picture number and the total number of pictures, and use the set position of the picture for carrying The pixels of the file data are decoded to obtain binary data of the file.
- the terminal further includes a judging module 24 and a sending module 25, and the judging module 24 is configured to judge whether the currently collected picture is the last picture according to the binary data of the picture number and the total number of pictures decoded by the decoding module 22.
- the sending module 25 is configured to: when the determining module 24 determines that the currently collected picture is not the last picture, send a signal to the opposite terminal to request the peer terminal to display the next picture.
- the decoding module 22 is specifically configured to decode the pixel for carrying the picture number in the set position of the picture, obtain binary data of the picture serial number, and decode the pixel used to carry the file data at the set position of the picture. , get the binary data of the file.
- the file generating module 23 is specifically configured to decode the binary data of the picture serial number and the binary data of the decoded file according to the decoding module 22, and perform file restoration according to the picture number.
- the decoding module 22 is specifically configured to decode the pixel for carrying the color gradation proof code at the set position of the picture, obtain binary data of the gradation proof code, and use the set position of the picture for carrying file data. The pixels are decoded to obtain the binary data of the file.
- the terminal further includes a color scale proofreading module 26, and a color scale proofreading module 26, configured to perform a color scale calibration difference between the binary data of the color scale proofreading code decoded by the decoding module 22 and the binary data of the standard color scale, to the decoding module 22
- the binary data of the decoded file is proofread, and the binary data of the proofed file is obtained.
- the embodiment of the present invention further provides a terminal. As shown in FIG. 3, the terminal includes: an encoding module 31, configured to encode binary data of a file to be transmitted, and generate a picture according to the encoding result, where the picture is generated. The multiple color gradations of the pixels correspond to the corresponding binary data.
- the display module 32 is configured to display the picture generated by the encoding module 31 on the display screen, so that the opposite terminal collects through the image acquisition module, decodes the obtained image according to the collected image, and obtains binary data according to the decoded binary data.
- the corresponding file is available.
- the encoding module 31 is specifically configured to encode the binary data of the file check code to be transmitted, and encode the file binary data of the file to be transmitted, and set the picture setting position for carrying the check according to the coded check code data.
- the encoding module 31 is specifically configured to encode the binary data of the picture number and the total number of pictures to be transmitted, and encode the file binary data of the file to be transmitted, and set the picture setting position according to the encoded picture serial number and the total number of pictures.
- the pixel level value of the picture number and the total number of pictures is carried, and the level value of the pixel for carrying the file data at the picture setting position is set according to the encoded file data.
- the encoding module 31 is specifically configured to encode the binary data of the picture number to be transmitted, and encode the file binary data of the file to be transmitted, and set the pixel used to carry the picture serial number according to the encoded picture serial number data.
- the gradation value, and the gradation value of the pixel for carrying the file data at the picture setting position is set according to the encoded file data.
- the display module 32 is specifically configured to perform image frame switching on the display screen according to a preset frequency if the encoding module 31 generates a plurality of pictures.
- the encoding module 31 is specifically configured to encode the binary data of the file level calibration code to be transmitted, and encode the file binary data of the file to be transmitted, and set the picture setting position for carrying according to the encoded color gradation proof code data.
- FIG. 4 shows a flow diagram of a file output method 400 in accordance with one embodiment of the present invention. As shown in Figure 4, method 400 includes the following steps.
- the file to be transmitted is encoded to generate one or more pictures.
- the file to be transmitted is similar to the file to be transmitted in the foregoing embodiment, and those skilled in the art can understand the file to be transmitted by referring to the foregoing embodiment, and details are not described herein.
- the encoding file may be used to encode the transmitted file.
- the encoding method can be any suitable encoding method. In an embodiment of the present invention, according to the size of the file to be transmitted and the amount of data that can be carried by the generated single picture, one picture may be generated according to the file to be transmitted or the file to be transmitted may be divided into multiple parts and corresponding pictures may be generated accordingly. .
- each picture carries a part of the data information of the file to be transmitted.
- a portion of each of the pictures to be transmitted may be encoded separately.
- the portion of the file to be transmitted that corresponds to the different pictures is encoded by the same encoding rule.
- one or more pictures are sequentially displayed, such that the receiving terminal performs an acquisition operation and a decoding operation for each of the one or more pictures to obtain decoded data of one or more pictures, and according to one or The decoded data of the plurality of pictures obtains the file to be transmitted.
- One or more pictures can be displayed one at a time on the display of the output terminal.
- the display of the output terminal can have any gradation index, including monochrome, 256 colors (8-bit color), 4096 colors (12-bit color), 65536 colors (16-bit true color), and 262144 colors (18-bit true color). .
- the resolution of the output terminal's display can be arbitrary, including 240*320 pixels, 320*480 pixels, 480*360 pixels, 640*480 pixels, 800*480 pixels, 854*480 pixels, 960*540 pixels, 1280 * 720 pixels, 1920* 1080 pixels, etc.
- the output terminal generates one or more pictures after the file to be transmitted is encoded and displays one or more pictures on the display screen, and the combination of the color tone index and the resolution of the display determines a single The amount of data that the image can carry in full screen mode. Therefore, when the gradation index and resolution of the display are both large, the amount of data that a single picture can carry is also large, so the number of generated pictures is small. Conversely, when the gradation index and resolution of the display are both small, the amount of data that a single picture can carry is small, so the number of generated pictures is large.
- encoding the file to be transmitted to generate one or more pictures comprises: setting a level value of a corresponding one of the one or more pictures according to the data segment of the file to be transmitted.
- the file to be transmitted can be divided into appropriate data segments according to the length of binary data that each pixel of the generated picture can carry. For example, if the length of the binary data that can be carried by each pixel in the generated picture is 18 bits, the file to be transmitted is divided into a plurality of data segments, and the length of each data segment is 18 bits. If the file to be transmitted is The last data segment is shorter than 18 bits, and the additional code 0 or 1 can be added to the lower bit so that the length of the last data segment is equal to 18 bits.
- the predetermined pixel carries information of the length of the additional code and the starting position in the last data segment.
- the gradation value of the corresponding pixel in the picture is set according to each data segment, so that the gradation value of the corresponding pixel is equal to the data segment of the file to be transmitted.
- the gradation values can come from a group that includes red gradation values, green gradation values, and blue gradation values.
- the color scale of each color can range from [0, 63]. Setting the gradation value of the corresponding pixel to be equal to the data segment of the file to be transmitted does not require further processing of the file to be transmitted, so the method is simple and efficient, and the file to be transmitted can be transmitted faster.
- encoding the file to be transmitted to generate one or more pictures further comprises: for each of the one or more pictures, one or more of the color correction codes can be set according to the standard color gradation
- the gradation value of each of the predetermined pixels may be the 1, 2, 3 pixels of the picture.
- the standard color gradation can be three colors of pure red, pure green, and pure blue. (For example, if the display is an 18-bit true color screen, the values are 3fl) 000, 003fl) 0, 00003O.
- the gradation values of the first, second, and third pixels can be set to the gradation values of the three colors of pure red, pure green, and pure blue, respectively.
- the predetermined pixels used to carry the tone calibration code may be at any suitable location of the picture.
- the standard color gradation can be any other suitable color gradation.
- the color scale proofreading code is used to proofread the data segments carried by the pixels of the picture when the receiving terminal decodes the picture.
- encoding the file to be transmitted to generate one or more pictures further comprises: for each of the one or more pictures, may be set in one or more predetermined pixels for carrying the check code The gradation value of each one.
- the check code is obtained by calculating a data segment corresponding to the gradation value of other pixels. Other pixels refer to pixels in the picture other than the pixels corresponding to the check code.
- the check code is used to verify the data segment carried by the pixels of the picture when the receiving terminal decodes the picture.
- the checksum of the data segment corresponding to the gradation value of the other pixel is calculated, and the checksum is set to check. The value of the code.
- the gradation values of the 4th, 5th, and 6th pixels of the picture can be set to be equal to the check code. It is also possible to set the gradation value of any other suitable pixel to be equal to the check code.
- the check code is advantageous for receiving the consistency between the final file and the file to be transmitted obtained by the terminal after the decoding process.
- encoding the file to be transmitted to generate one or more pictures further comprises: setting, for each of the one or more pictures, each of the one or more predetermined pixels for carrying the picture number Level value.
- the picture sequence number is used by the receiving terminal to sort the data segments obtained from the pictures at the time of decoding to splicing the data segments in the correct order.
- the file to be transmitted is encoded to generate one or more pictures, further comprising: Each of the one or more pictures sets a tone scale value for each of the one or more predetermined pixels that carry the identifier.
- the identifier can be used to identify whether the picture to which it belongs is the last picture. The identifier helps to determine the last picture in time, avoiding unnecessary operations.
- the identifier can include an image serial number and a total number of images. The image sequence number and the total number of images can be used to indicate the total number of generated pictures and the position of the current picture in all pictures. According to the picture number and the total number of images, it can be judged whether the current picture is the last picture.
- the identifier can simply be 0 or 1.
- 0 can represent that the current picture is not the last picture, and 1 can represent the current picture as the last picture, and vice versa.
- Identifiers can also be used to identify other information.
- an identifier can indicate the start of a transfer.
- the 7th pixel of the picture can be set to carry the identifier.
- the gradation value of any other suitable pixel is also set to the bearer identifier.
- encoding the file to be transmitted to generate one or more pictures further comprises: setting, for each of the one or more pictures, each of the one or more predetermined pixels for carrying the control code Level value.
- the control code may include some operation instructions for controlling the receiving terminal to perform corresponding operations.
- the gradation value of the 8th pixel of the picture can be set such that the 8th pixel carries the control code. It is also possible to set the gradation value of any other suitable pixel such that the pixel carries the control code.
- the next picture of the current picture is displayed in response to a request from the receiving terminal to display the next picture.
- the next picture is displayed. Displaying the picture according to the request from the receiving terminal ensures that the next picture is displayed after the receiving terminal finishes processing the current picture, so the transmission process is more accurate and reliable.
- multiple pictures may be displayed in sequence at a fixed frequency.
- the display request can be sent by ultrasound. Ultrasonic signals can avoid noise.
- a signal is received from the receiving terminal that the notification file is transmitted and the display is stopped according to the signal.
- an instruction of the receiving terminal is awaited.
- receiving a signal that the notification file transmission from the receiving terminal is completed it indicates that the file transfer has been completed, so that the display of the picture can be stopped according to the signal.
- the picture can be redisplayed if the transmission process is in error and the receiving terminal fails to correctly obtain the file to be transmitted. Therefore, stopping the display of the image according to the signal is advantageous for improving the accuracy of the transmission process.
- the present invention provides a file transfer method.
- FIG. 5 shows a flow diagram of a file transfer method 500 in accordance with one embodiment of the present invention.
- Method 500 includes the following steps.
- a collection operation and a decoding operation for each of the one or more pictures sequentially displayed by the output terminal are performed to obtain decoded data of one or more pictures.
- Acquisition operations can be done using a camera.
- the resolution of the camera needs to be able to clearly distinguish the requirements of each pixel in each picture.
- the resolution of the camera can be 2 million pixels.
- a file to be transmitted is obtained based on decoded data of one or more pictures.
- One or more pictures are generated by encoding the file to be transferred. If there is only one picture generated by encoding the file to be transmitted, the decoded data obtained in step 501 is the file to be transmitted. If the image to be transmitted is encoded, the image generated has If there are multiple, the decoded data includes a part of each picture corresponding to the file to be transmitted. A part of each picture to be transmitted is spliced together to obtain a file to be transmitted.
- the output terminal is similar to the foregoing terminal, and those skilled in the art can understand the output terminal by referring to the above description about the terminal.
- the above transmission method can be realized without adding an additional communication module on the receiving terminal, which saves the manufacturing cost of the receiving terminal.
- the electromagnetic radiation and electromagnetic interference problems caused by existing file transmission methods such as Bluetooth and Wi-Fi are avoided, and the operation is more convenient and effective.
- the gradation value of each of at least a portion of the pixels of each of the one or more pictures may be equal to the corresponding data segment of the file to be transmitted.
- the gradation values of corresponding pixels in one or more pictures may be set according to the data segments of the file to be transmitted.
- the gradation values can come from a group that includes red gradation values, green gradation values, and blue gradation values.
- an acquisition operation and a decoding operation are performed for each picture.
- the acquisition operation and the decoding operation of the picture are sequentially performed to obtain the decoding data of the picture.
- the collection operation and the decoding operation of the plurality of pictures may have different execution orders.
- the plurality of pictures are divided into at least two groups. For the last picture in each group, after the decoding operation is completed, if the next picture exists, the acquisition operation for the next picture is started.
- Figure 6a illustrates the sequence of execution of acquisition and decoding operations for four pictures in accordance with one embodiment of the present invention.
- the four pictures are divided into four groups, each group including only one picture.
- Figure 6a perform the following operations on four pictures, namely pictures, pictures, pictures, and pictures:
- step 601c the picture is collected in the step, the picture is decoded in step 602c, the picture is collected in step 602d, the picture 2 is decoded, in step 603c, the picture 3 is collected, in step 603d, the picture 3 is decoded, and in step 604c, the picture is collected in the step, Decode the picture.
- the above eight steps are sequentially performed in the following order: 601c ⁇ 602c ⁇ 603c ⁇ 604c That is, in this example, the acquisition and decoding of the next picture are started after the acquisition operation and the decoding operation for one picture are performed.
- Figure 6b shows the execution sequence of the acquisition and decoding operations of four pictures in accordance with another embodiment of the present invention.
- the acquisition operation and the decoding operation of the above four pictures are sequentially performed in the following order: 601c ⁇ 602c ⁇ 603c ⁇ 604c
- four pictures are divided into two groups, and the picture and picture are the first group. , pictures and pictures are in the second group.
- the respective acquisition operations 601c, 602c are sequentially performed on the two pictures in the first group, and then the respective decoding operations, 602d, are sequentially performed on the two pictures.
- the image acquisition operation 603c is started. Thereafter, the acquisition operation and the decoding operation are performed on the pictures in the second group in an order similar to the execution order of the first group.
- Figure 6c illustrates an execution sequence of acquisition operations and decoding operations for four pictures in accordance with yet another embodiment of the present invention.
- four pictures are grouped into one group.
- the acquisition operation and the decoding operation of the above four pictures are sequentially performed in the following order: 601c ⁇ 602c ⁇ 603c ⁇ 604c.
- the acquisition operation is first performed on all the pictures in order. After the acquisition operation of the last picture is completed, the first picture is decoded.
- the decoding operation can include the following steps.
- the tone scale collation code is obtained according to the tone scale value for each of the one or more predetermined pixels for carrying the tone scale proof code; and the corresponding data segment is obtained according to the tone scale values of the other pixels.
- the color correction proof code and the corresponding data segment are collated according to the proofreading difference between the color scale proofreading code and the standard color gradation.
- the color scale proofreading code is collated with the standard color gradation (the color gradation of pure red, pure green, and pure blue) to calculate the color scale calibration difference of the first, second, and third pixels.
- the data segments corresponding to the gradation values of the pixels of the entire picture are collated according to the gradation correction of the three pixels.
- the gradation correction of the first pixel the gradation value of the first pixel - the standard gradation of the first pixel
- the gradation correction of the second pixel the gradation value of the second pixel - the standard color of the second pixel Step
- gradation correction of the third pixel gradation value of the third pixel - standard gradation of the third pixel.
- the decoding operation may include the following steps.
- a check code is obtained based on the gradation value of each of the one or more predetermined pixels for carrying the check code, and the corresponding data segment is obtained from the gradation values of the other pixels.
- the corresponding data segment is verified according to the check code to re-execute the acquisition operation for each picture in the current group if the verification is not passed.
- the method for verifying the data segment corresponding to the gradation value of the other pixel by using the check code is similar to the calibrating method used in the foregoing embodiment, and will not be described again. When the check fails, it indicates that the current picture has an error during transmission, such as color distortion.
- the method 500 further includes: during execution, for the last picture in each group, after the decoding operation is completed, transmitting a request to display the next picture to the output terminal.
- a request to display the next picture is sent to the output terminal.
- the output terminal displays picture 2, picture 3 and picture 4, respectively.
- Picture 4 is the last of all pictures, so although the request to display the next picture is sent to the output terminal when 604d is completed, the output terminal may not display any picture.
- the request to display the next picture may not be sent to the output terminal when the decoding operation of the last picture in all pictures is completed.
- the request is sent by ultrasound.
- each of the one or more pictures includes one or more predetermined pixels for carrying an identifier.
- the identifier is used to identify whether the picture to which it belongs is the last picture.
- the identifier can include the image number and the total number of images. Those skilled in the art can understand the identifiers with reference to the foregoing embodiments, and details are not described herein again.
- the request is sent based on the identifier.
- a request to display the next picture may be sent to the output terminal.
- the display may not be sent to the output terminal. Request for the next picture.
- the method 500 further comprises: after obtaining the to-be-transmitted file based on the decoded data of the one or more pictures, transmitting a signal to the output terminal notifying that the file transfer is complete, such that the output terminal stops displaying according to the signal.
- the signal to notify the completion of the file transfer has been set forth in the description of the embodiment of the method 400 and will not be described again.
- the gradation values of corresponding pixels in the picture may be set based only on the data segments of the file to be transmitted.
- the gradation values of the corresponding pixels in the picture may also be set in combination with one of the tone calibration code, the check code, and the identifier, or any combination thereof.
- the corresponding pixel can be decoded depending on the encoding.
- the step of proofreading using the tone scale proofing code precedes the step of verifying using the check code.
- the file to be transmitted may be subjected to encryption, compression, and the like. Accordingly, in method 500, one or more pictures may be decrypted, decompressed, etc. during decoding of one or more pictures.
- the present invention provides a receiving terminal comprising a camera and a processor.
- the camera is operative to perform an acquisition operation for each of the one or more pictures sequentially displayed by the output terminal.
- a processor is operative to perform a decoding operation of each of the one or more pictures to obtain decoded data for one or more pictures.
- the processor is further operative to obtain a file to be transmitted based on decoded data of one or more pictures.
- One or more pictures are generated by encoding the file to be transmitted.
- the present invention provides an output terminal including a processor and a display screen.
- the processor is used to encode the transmitted file to generate one or more pictures.
- the display screen is configured to sequentially display one or more pictures, such that the receiving terminal performs an acquisition operation and a decoding operation for each of the one or more pictures to obtain decoded data of one or more pictures, and according to one or more The decoded data of the pictures obtains the file to be transmitted.
- the present invention provides a non-transitory computer program product comprising executable program code for file transfer.
- the executable program code is operative to: when executed, perform an acquisition operation and a decoding operation for each of the one or more pictures sequentially displayed by the output terminal to obtain decoded data of one or more pictures.
- the executable program code is operative to: when executed, obtain a file to be transmitted based on decoded data of one or more pictures.
- One or more pictures are generated by encoding the file to be transferred.
- the present invention provides a non-transitory computer program product comprising executable program code for file output.
- the executable program code is operable to: when executed, encode the file to be transmitted to generate one or more pictures. Further, the executable program code is operable to: when executed, display one or more pictures in sequence, such that the receiving terminal performs an acquisition operation and a decoding operation for each of the one or more pictures, to Decoding data of one or more pictures is obtained, and a file to be transmitted is obtained according to decoded data of one or more pictures.
- the above executable program code is further operable for being executed by a processor At the time of the line, all the steps of the above corresponding methods can be implemented. For the sake of brevity, the additional functionality of the executable program code is not further described herein. Note that the code may directly cause the processor to perform specified operations, be compiled to cause the processor to perform specified operations, and/or be combined with other software, hardware, and/or firmware components (eg, libraries for implementing standard functions) for processing The device performs the specified operation.
- the code may directly cause the processor to perform specified operations, be compiled to cause the processor to perform specified operations, and/or be combined with other software, hardware, and/or firmware components (eg, libraries for implementing standard functions) for processing The device performs the specified operation.
- modules in the apparatus in the embodiments may be distributed in the apparatus of the embodiment according to the description of the embodiments, or may be correspondingly changed in one or more apparatuses different from the embodiment.
- the modules of the above embodiments may be combined into one module, or may be further split into a plurality of sub-modules.
- the present invention can be implemented by means of software plus a necessary general hardware platform, and of course, can also be through hardware, but in many cases, the former is a better implementation. the way.
- the technical solution of the present invention which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a storage medium, including a plurality of instructions for making a
- the terminal device (which may be a cell phone, a personal computer, a server, or a network device, etc.) performs the methods described in various embodiments of the present invention.
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