CN101877839A - Method for transmitting individualized short message - Google Patents
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Abstract
The invention discloses a method for transmitting an individualized short message based on an image compression algorithm and GPRS real-time transmission and relates to the technologies of touch identification, image compression and GPRS transmission. In a system realized based on the method, a user can edit an individualized short message easily on an mobile terminal of the user; the information containing variant characters, abbreviated characters and individualized scribbled characters and symbols is intactly transmitted to a receiver in the form of images, so that the receiver can enjoy the individualized creation 'face to face's and the information that the user wants to express can be conveyed. The invention has relatively high requirements on the network environment, and the requirements, however, can be easily satisfied according to the current development of the communication network. The invention has a very wide application prospect due to the increasing individualized creation of the people and the constantly improved network environment and terminal technology.
Description
Technical field
The present invention is a kind of method that is used for the making and the transmission of the individual short message on the portable terminal, belongs to the technical field of communication network application.
Background technology
At present following two modes are arranged about the message transmission between the communication network portable terminal: the one, voice communication, this is a kind of communication pattern of full duplex, also is to inherit the best illustration that original communication fixed telephone network is used; The 2nd, message communicating, this at a time can be referred to as the pattern of simplex.Modern society has reached unprecedented need state to the application of message communicating, and message communicating miscellaneous emerges in an endless stream, and wherein being most widely used also is that two kinds of the most ripe messenger service of technology are short message SMS and color messages MMS.Because editor's convenience and agility make essence adopt the SMS of voice transfer pattern to obtain unprecedented development; And along with modern people particularly after 80s, after 90s continuous growth, the cellphone subscriber is to the demand of personalization highlighting more widely, people no longer satisfy machine-made text, so the MMS (China Mobile is referred to as multimedia message) after short text message has been arranged, then people have produced discontented again to the editor's of color message complexity, this has just caused mobile phone cam, the sound pick-up outfit example with color message combination, people can pass while clapping, pass while recording, this has satisfied the demand psychology of people to the message transmit diversity to a certain extent.
Be not only that mobile operator constantly finds out new idea and satisfies the demand of people to personalization, mobile-phone manufacturers are also constantly exploring and are pursuing.To renovating to slip lid and rotary flip, the pattern of mobile phone has upgraded a lot of generations again from straight plate; From simple digital keys, to the literal keyboard edited that contains letter and to full keyboard, the content that the editor that people can be more prone to will explain oneself; Mobile phone screen from small to large, from black and white road color screen, touch-screen till now again, people constantly obtain satisfying accordingly to the demonstration of portable terminal and the demand of editting function.The birth of touch-screen makes that having had of on-keyboard mobile phone is possible, because the restriction of fuselage specification and people make More and more factories more be ready to allow the user use the mode of touch to control mobile phone to the requirement of screen size.So only containing few key mobile phone of some basic function keys comes out, but this for those " thumb gangs " and do not mean that they need change the custom of oneself, because character recognition technology has been dissolved in the use of touch-screen: just as you write on paper, the letter symbol that goes out with stroke on touch-screen all will be by system identification, the literal that you only need to select you to want to edit in the result who identifies gets final product, and this mode was once becoming the fashion in the young staff.
Adopt the color message of GPRS transmission as if can solve the problem be sick of of people to uninteresting literal, but the maximum weakness of multimedia message breath is that image transmitted information all is the whole picture that existing or firm shooting is finished in the mobile phone, the user can not edit picture itself when carrying out multimedia message breath editor, perhaps also needing to add corresponding literal comes picture is made explanations, the meaning of recipient's ability correct understanding transmit leg, this is a loaded down with trivial details job, makes the development of multimedia message breath run into bottleneck.Certainly China Mobile's dream has the function of multimedia message DIY on the net, but this must finish by means of PC, and this function is charging item, the confidence that this has hit users again greatly.The multimedia message breath is generally limited size by operator for the consideration of bandwidth reasons, this is a no small trouble for the user.
Nowadays 3G (3G (Third Generation) Moblie technology) China carry out like a raging fire, the revolution of a maximum of 3G just is to have improved the communication network bandwidth; It is reported in addition, the research that 4G has also opened in China, in the 4th generation, will have further leap to promote on the communication network bandwidth than the third generation.Therefore believe that bandwidth constraints this " bottleneck " will no longer be a difficult problem in the near future.
In view of above analysis, existing message communicating technology and problem thereof are summarized as follows:
1. plain text short message SMS, simple and direct facility, low to the communication network bandwidth requirement, but can not satisfy people to the multimedia transmission demands of applications at all.
2. Multimedia Message MMS has satisfied people to a certain extent to the multimedia messages transmission requirements, but because the limitation of creation during MMS makes people's individual demand can not obtain bigger satisfying.
Along with the continuous improvement of communication network and portable terminal more be tending towards intelligent, a kind ofly can change people the dependent personalization message transmission method of traditional text message is demanded urgently excavating.
Summary of the invention
Technical problem: the purpose of this invention is to provide a kind of method of making and transmission of individual short message, promptly a kind of creation and transmission of the individual pictures message based on the GPRS transmission mechanism.The literal of the user being write on screen by the touch-screen recognition technology on the portable terminal of transmit leg, character etc. are preserved with certain picture form, and these pictures are compressed processing, and being transferred to the recipient by the form of GPRS, reception can be authentic and valid views the individual pictures message that transmit leg is edited.The present invention has two to expand direction in addition: the one, and according to the form of short text message, just transmission bearer the picture of text message; The 2nd, this technology with the combination of multimedia message breath technology, can also be transmitted multimedia messagess such as comprising other existing pictures, sound, video except that the picture of transmission bearer text message.
Technical scheme: the technology that the present invention relates to comprises: hand-written touch recognition technology, Image Compression and GPRS transmission technology.
Hand-written touch recognition technology: the touch recognition technology is based on touch-screen (English: Touch panel, Touchscreens) a technology, so-called touch-screen is meant the induction type liquid crystal indicator that can accept contact input signals such as (no matter being finger or glue nib etc.).According to the medium of the operation principle of touch-screen and transmission information, we are divided into four kinds to touch-screen, and they are respectively resistance-type, capacitor induction type, infrared-type and surface acoustic wave type.Can be divided into statistics identification, structure identification and neural net method etc. based on the character recognition technology on the touch-screen, most hand-written discrimination system adopts structural recognition method.So-called structural recognition method, its starting point is the composition structure of font, with the Chinese character is example, Chinese character is to be made of stroke (point, horizontal, vertical, left-falling stroke, right-falling stroke etc.), radical, radicals by which characters are arranged in traditional Chinese dictionaries, by complicated Chinese mode is decomposed into simple subpattern until the fundamental mode element, to the judgement of subpattern, and, reach identification to complex patterns based on the matching algorithm of symbolic operation.Combine hand-written touch character recognition technology on the existing portable terminal and all be track that hardware device passes by nib and be transferred to the backstage after according to time sampling, finish identification automatically by software, and preserve, show with the mode of machine intimate.Application of the present invention need not to do literal identification, and only need discern the literal track, can be with the form storage transmission of its track with picture.
Image Compression: the presentation technology of picture is with regard to two kinds, bitmap technology and polar plot technology.Polar plot is mainly used in the cartoon figure of computer creation and mathematical regular figure etc., and usually in our life contact more, as digital photo, the picture that computer is advanced in scanning all is a bitmap.We will compress for these pictures, and article one approach is exactly directly to reduce the size of picture, and the photo of a 3000*2000 for example is adjusted into its big young pathbreaker of 600*400 with its size and becomes original 1/25th.Certainly the principle of showing with regard to bitmap table we it is also conceivable that the number of colours that reduces image, but we generally do not handle like this.The second approach utilizes some technology exactly, to visual recompile (as: jpeg is exactly a kind of technology).The compression of image all is to be cost with the quality that changes image itself, although we may be imperceptible at all.
For the compression of bitmap, two kinds of methods are arranged fundamentally: Format Type conversion compression and photo resolution are regulated.So-called Format Type conversion compression is exactly to utilize some technology that image is carried out recompile, the corresponding a kind of image encoding of each file format.Compress technique commonly used has: jpeg, GIF, PNG and jpeg2000.
(1) original meaning of GIF (Graphics Interchange Format) is " graphic interchange format ", is the image file format of CompuServe company exploitation in 1987.The data of gif file are a kind of nondestructive compression types of the continuous tone based on lzw algorithm.Another characteristics of GIF form are that it can deposit several coloured images in a gif file, if read and be shown on the screen by the width of cloth being stored in the multiple image data in the file, just can constitute the simplest a kind of animation.The GIF form after being introduced by CompuServe company in 1987, and is clear relatively because of the little imaging of its volume, is particularly suitable for initial stage the Internet at a slow speed, and from then on popular.It adopts lossless compressiong, needs only no more than 256 looks of image, then can both reduce the size of file, is held in the quality of picture again.
(2) png is the image file storage format that the mid-90 in 20th century begins to develop, when PNG was used for storing gray level image, how the degree of depth of gray level image was can be to 16, during the storage color image, how the degree of depth of coloured image is can be to 48, and can store many α channel datas to 16.PNG uses the lossless data compression algorithms that derives from from LZ77.
(3) jpeg format is a most popular picture format on the present network, is can be File Compress to minimum form, because the document size of jpeg format is less, speed of download is fast, and the application of jpeg format is very extensive, particularly on network.JPEG2000 is as the upgrade version of JPEG, and its compression ratio is high more about about 30% than JPEG, supports simultaneously to diminish and lossless compress.
The GPRS transmission technology: the abbreviation of general packet radio service technology (General Packet Radio Service), it is a kind of mobile data services that the gsm mobile telephone user can use.It often is described as " 2.5G ", that is to say that this technology is positioned between the second generation (2G) and the third generation (3G) mobile communication technology.It provides the data passes of middling speed by utilizing untapped TDMA channel in the GSM network.GPRS is to transmit with package (Packet) formula with continuously different in the mode of channel transmission in the past, so the expense that the user bore is to calculate with its data transmission unit, is not to use its whole channel, and is comparatively cheap in theory.The communication mode of GPRS packet switching is in the communication mode of packet switching, and data are divided into the bag (grouping) of certain-length, and there is a packets headers (address mark wherein indicates this grouping and where mails to) front of each bag.Data do not need to allocate in advance channel before transmitting, and connect.But when each packet arrives,, seek an available channel resource temporarily this datagram is sent according to the information in the data packet head (as destination address).In this load mode, the relation that takies of not fixing between the transmission of data and the recipient's cochannel, channel resource can be regarded as by all users shares use.GPRS has following characteristics on using: 1, high speed data transfer, 10 times of speed more can satisfy your desirable demand to GSM, can also stably transmit jumbo high quality audio and video file; 2, always online, almost need not any time (promptly need not to set up calling into the visit of each data connects) owing to set up new connection, thereby you can keep in touch with network at any time, and this also makes the present invention user and the traditional SMS of making peace does not have the difference on the sense organ relatively; 3, only charge by data traffic, as long as will need the size of the data that send to be controlled in certain scope (can realize by compress technique), such communication cost generally is to be accepted by the user.
A kind of method for transmitting individualized short message of the present invention specifically may further comprise the steps:
1), transmit leg realizes the making of individual short message, uses " multiple point touching identification finger position method " to carry out the identification of the text handwriting on the touch-screen,
2), transmit leg carries out this locality preservation to the information of touch-screen identification, preserving type has two kinds:
The mode that picture is preserved in a, use, and adopt " improved JPEG2000 picture compression algorithm " to compress;
The mode that the person's handwriting vector is preserved in b, use, and adopt a method of only handling " person's handwriting vector " to carry out data processing;
3), adopt GPRS communication mode real-time Transmission individual short message, make short message transmission in real time, real-time Transmission and receive in real time, to reduce dependence middle server;
4), receiving terminal after receiving short message data, carry out finish message, comprise that picture decompresses or vector data reappears, and picture is played up step; Also need carry out the information regularization of short message at the short message of multiple image, make the recipient can check the picture short message that transmit leg sends according to the order of sequence.
Described improved JPEG2000 picture compression algorithm, the selection algorithm that is primarily aimed at " area-of-interest " in the JPEG2000 picture compression flow process improves, arthmetic statement after the improvement is as follows: the text handwriting that the user stays on screen is described with the person's handwriting vector, all person's handwriting vectors have constituted the vector region of this width of cloth literal picture, all pixels that transmitting terminal only needs to be arranged in vector region are handled as " area-of-interest " of JPEG2000 image compression algorithm, and then calculate the regional mask of corresponding area-of-interest, quantize wavelet coefficient, determine amplification coefficient and entropy coding in the area-of-interest, form last compressed bit stream and transmission.
The method of described person's handwriting vector is carried out data processing, it is implemented as follows: at first design a ternary set of vectors, be used for characterizing the information of each pixel, what be respectively the pixel place is horizontal stroke, the ordinate of initial point with the upper left angle point in copy editor zone, and the color information of pixel; The user of transmitting terminal calculates each by the vector data of the pixel of text handwriting with form the tlv triple of this pixel when obtaining the copy editor at the color information that this pixel adopted behind the intact Word message of every editor; In addition, before the tlv triple data of all pixels send, also to obtain and send the color data that is used to describe all the other non-person's handwriting vector regions, i.e. the data of the background area of literal; Receiving terminal is according to the triplet information reduction text handwriting of pixel in background area information data and all person's handwriting zones.
Beneficial effect:
1) this method makes that the transmit leg system need not literal identification is carried out in user's text editing, but directly picture is preserved, and has alleviated the burden of transmit leg hardware, has improved editor's speed and efficiency of transmission.
2) because the described picture that carries text message that is used to transmit of this method through picture compression technical finesse efficiently, therefore can not take too big communication network bandwidth, this has solved the bottleneck problem of bandwidth from another point of view.
Whether 3) system that realizes of this method can satisfy the growing individual demand of people, and people can go to edit and oneself want the content explained according to the wish of oneself, and need not to consider whether standard of this mode, can be by problems such as system identifications.Thereby solved and write a Chinese character in simplified form word, variant Chinese character, unsociable and eccentric word and ciphertext transmission requirements problem.
4) the inventive method is applicable to various cellphone informations transmission application demand environment, comprises fields such as carrying out the Internet of Things Control Study by information.
Description of drawings
Fig. 1 is that common short message editing sends schematic diagram.
Fig. 2 is personalized hand-written image information schematic diagram.
Fig. 3 is the creation and the transfer process figure of personalized hand-written image information.
Fig. 4 is the process chart of receiving terminal to short message.
Embodiment
The present invention relates to information creation part, image compression part and partial message transmission.The picture that the recipient only needs to be loaded with text message accordingly shows the purpose that has just reached the information demonstration.
Information creation partial design:
Information creation part is divided into touch-screen identification and the literal picture is preserved two parts.Touch-screen mainly is divided into three major types at present: single-point touch; Multi-point touch identification finger orientation; Multi-point touch identification finger position.What be most widely used now is multi-point touch identification finger orientation, and the present invention realizes also suggestion use multi-point touch identification finger orientation method.The literal picture is preserved and is not meant that the picture that is loaded with text message that edits is stored on terminal, temporary transient storage before just finishing as whole information editing, this part can partly combine with picture compression, can adopt and compress immediately after having edited a pictures, also can after whole information editing finishes, carry out reduced overall again.Former approach is adopted in suggestion.
A kind of method for transmitting individualized short message of the present invention may further comprise the steps:
1), transmit leg realizes the making of individual short message, uses " multiple point touching identification finger position method " to carry out the identification of the text handwriting on the touch-screen,
2), transmit leg carries out this locality preservation to the information of touch-screen identification, preserving type has two kinds:
The mode that picture is preserved in a, use, and adopt " improved JPEG2000 picture compression algorithm " to compress;
The mode that the person's handwriting vector is preserved in b, use, and adopt a method of only handling " person's handwriting vector " to carry out data processing;
3), adopt GPRS communication mode real-time Transmission individual short message, make short message transmission in real time, real-time Transmission and receive in real time, to reduce dependence middle server;
4), receiving terminal after receiving short message data, carry out finish message, comprise that picture decompresses or vector data reappears, and picture is played up step; Also need carry out the information regularization of short message at the short message of multiple image, make the recipient can check the picture short message that transmit leg sends according to the order of sequence.
The picture compression partial design:
It is most popular picture format on the present network that JPEG has been introduced in the front, and he has higher compression ratio, and his upgrade version JPEG2000 then has more advantage than him.Except having higher compression ratio, the JPEG2000 form has one extremely importantly to be characterised in that it can realize progressive transmission, and promptly the profile of first images progressively transmits data then, improves constantly picture quality, allow image by dim to clearly showing.In addition, JPEG2000 also supports so-called " area-of-interest " characteristic, can specify the compression quality of area-of-interest on the image arbitrarily, can also select the part of appointment to decompress earlier.In some cases, having only a pocket in the image is useful to the user, to these zones, adopt low compression ratio, and adopt high compression ratio outside the area-of-interest, when guaranteeing not lose important information, amount of compressed data effectively again, the Compression Strategies that Here it is takes based on the encoding scheme of area-of-interest.Its advantage is that it combines the subjective demand of recipient to compression, has realized interactive compression.And the recipient usually has new requirement along with observation, may may wish that also a certain zone is more clear to new regional interested.
Based on above-mentioned analysis, realization suggestion of the present invention adopts the method for JPEG2000 to realize the picture compression part, and at first, its high compression rate makes that the size of whole message is controlled; Secondly, its progressive transmission function can allow the receiving terminal can progressive demonstration when checking message, increased interest, and other picture compression method is inaccessiable; Have, its " area-of-interest " characteristic can further reduce compression efficiency, further reduces the requirement of this invention to communication network bandwidth again.Because the picture that is loaded with text message that will transmit is except that the part that writing is arranged, most of zone is useless, should take the high compression ratio for this part zone, and for the zone that the writing impression is arranged, need to adopt lower compression ratio, could guarantee to receive the text message that to check carrying clearly like this.
Another parallel method of the present invention has been embodied on the carrier transmission means of text message, introduction of the present invention be the mode of utilizing the whole transmission information of picture pixel, can adopt the mode of only transmitting the person's handwriting vector to transmit in addition, can further reduce the size of data traffic like this, but be based on advancing by leaps and bounds of 3G network or even 4G network technology, the bottleneck of network bandwidth limitations will be resolved in the near future, so the present invention adopts the above-mentioned picture and the method for compression thereof.
Information real-time Transmission partial design:
GPRS realized that technically packet sends and received, and existing GPRS can realize the speed of 56～115Kbps, and owing to used the technology of " grouping ", the misery that the user surfs the Net and can avoid breaking.GPRS has at first introduced the transmission mode of packet switching, makes the original GSM of circuit switched mode that adopts transmit the variation that essence has taken place data mode, and this seems particularly important under the rare situation of Radio Resource.By circuit switched mode, in the whole connection phase, whether the user transmits data all will be occupied wireless channel alone.During session, many application often have many idle periods, and as above Internet browses, receives and dispatches E-mail or the like.For packet switched mode, the user only just takies resource in transmission or during receiving data, this means that a plurality of users can share same wireless channel expeditiously, thereby has improved the utilance of resource.GPRS user's charging is main foundation with the data volume of communication, has embodied the principle of " what obtain, what are paid ".In fact, GPRS user's connect hours may reach a few hours, but only needs the cheap relatively connection charge of payment.GPRS can provide the transmission rate up to 115kbit/s (peak is 171.2kbit/s, does not comprise FEC).The turn-on time of GPRS is short.The real-time of GPRS is the most important reason that the present invention adopts.Though also being the GPRS agreement that adopts, multimedia message realizes, but do not utilize the real-time advantage of GPRS, the user is sent to the multimedia message breath on the intermediate server of telecom operators, server is forwarded to receiving terminal again, certainly receiving terminal can be rejected, and this process need not to send in real time in real time to receive, and so just the situation for unstable networks relatively adapts to, because real-time is not required, whole process can dynamically be adjusted under the situation of network environment quality and send and accepting state.And the present invention is because data volume is relatively large, causes such as the interchange number of times is more, continue to adopt mode that the sort of storage of multimedia message breath transmits again for the having relatively high expectations of the intermediate server of telecom operators, therefore adopt to send in real time in real time to receive to alleviate dependence to middle server.The another one important reasons is the multimedia message based on GPRS; its application is that special-purpose port is arranged; and this port is subjected to the protection of China Mobile; realization of the present invention is the application program that will independently write on the terminal; its bottom GPRS protocol port can not be again with being applied to the particular port of multimedia message, so will select other modes to realize.
Claims (3)
1. method for transmitting individualized short message is characterized in that this method may further comprise the steps:
1), transmit leg realizes the making of individual short message, uses " multiple point touching identification finger position method " to carry out the identification of the text handwriting on the touch-screen,
2), transmit leg carries out this locality preservation to the information of touch-screen identification, preserving type has two kinds:
The mode that picture is preserved in a, use, and adopt " improved JPEG2000 picture compression algorithm " to compress;
The mode that the person's handwriting vector is preserved in b, use, and adopt a method of only handling " person's handwriting vector " to carry out data processing;
3), adopt GPRS communication mode real-time Transmission individual short message, make short message transmission in real time, real-time Transmission and receive in real time, to reduce dependence middle server;
4), receiving terminal after receiving short message data, carry out finish message, comprise that picture decompresses or vector data reappears, and picture is played up step; Also need carry out the information regularization of short message at the short message of multiple image, make the recipient can check the picture short message that transmit leg sends according to the order of sequence.
2. method for transmitting individualized short message according to claim 1, it is characterized in that described improved JPEG2000 picture compression algorithm, the selection algorithm that is primarily aimed at " area-of-interest " in the JPEG2000 picture compression flow process improves, arthmetic statement after the improvement is as follows: the text handwriting that the user stays on screen is described with the person's handwriting vector, all person's handwriting vectors have constituted the vector region of this width of cloth literal picture, all pixels that transmitting terminal only needs to be arranged in vector region are handled as " area-of-interest " of JPEG2000 image compression algorithm, and then calculate the regional mask of corresponding area-of-interest, quantize wavelet coefficient, determine amplification coefficient and entropy coding in the area-of-interest, form last compressed bit stream and transmission.
3. method for transmitting individualized short message according to claim 1, the method that it is characterized in that described person's handwriting vector is carried out data processing, it is implemented as follows: at first design a ternary set of vectors, be used for characterizing the information of each pixel, what be respectively the pixel place is horizontal stroke, the ordinate of initial point with the upper left angle point in copy editor zone, and the color information of pixel; The user of transmitting terminal calculates each by the vector data of the pixel of text handwriting with form the tlv triple of this pixel when obtaining the copy editor at the color information that this pixel adopted behind the intact Word message of every editor; In addition, before the tlv triple data of all pixels send, also to obtain and send the color data that is used to describe all the other non-person's handwriting vector regions, i.e. the data of the background area of literal; Receiving terminal is according to the triplet information reduction text handwriting of pixel in background area information data and all person's handwriting zones.
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| CN 201010182524 CN101877839A (en) | 2010-05-25 | 2010-05-25 | Method for transmitting individualized short message |
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| CN 201010182524 CN101877839A (en) | 2010-05-25 | 2010-05-25 | Method for transmitting individualized short message |
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| CN103064608A (en) * | 2011-10-20 | 2013-04-24 | 联想移动通信科技有限公司 | Processing method and terminal device of multimedia message |
| CN103313212A (en) * | 2012-03-16 | 2013-09-18 | 腾讯科技（深圳）有限公司 | Information sending and receiving method, sending terminal and receiving terminal |
| CN104135725A (en) * | 2014-08-01 | 2014-11-05 | 天津三星通信技术研究有限公司 | Short message sending method and portable terminal |
| CN105094360A (en) * | 2015-06-18 | 2015-11-25 | 努比亚技术有限公司 | Information transformation processing method and information transformation processing terminal |
| CN106205632A (en) * | 2016-07-18 | 2016-12-07 | 广州视睿电子科技有限公司 | Voice converts the method and apparatus of handwriting |
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| CN101431556A (en) * | 2007-11-08 | 2009-05-13 | 王健柏 | Mobile phone integrated with fax receiving and transmitting function |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103064608A (en) * | 2011-10-20 | 2013-04-24 | 联想移动通信科技有限公司 | Processing method and terminal device of multimedia message |
| CN103313212A (en) * | 2012-03-16 | 2013-09-18 | 腾讯科技（深圳）有限公司 | Information sending and receiving method, sending terminal and receiving terminal |
| CN104135725A (en) * | 2014-08-01 | 2014-11-05 | 天津三星通信技术研究有限公司 | Short message sending method and portable terminal |
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| CN106205632A (en) * | 2016-07-18 | 2016-12-07 | 广州视睿电子科技有限公司 | Voice converts the method and apparatus of handwriting |
| CN106205632B (en) * | 2016-07-18 | 2019-07-09 | 广州视睿电子科技有限公司 | The method and apparatus of voice conversion handwriting |
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Application publication date: 20101103 |