CN103488618B - Text message transfer approach and system, text message display packing and system - Google Patents
Text message transfer approach and system, text message display packing and system Download PDFInfo
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Abstract
The invention provides a kind of text message transfer approach, comprise the steps: the binaryzation lattice information obtaining word, described lattice information is converted to bitmap; According to the pixel value of pixel in the minimum code unit preset and described bitmap, determine all encoded block, and described encoded block is numbered; By preset coded sequence and minimum code unit read described bitmap, read each time current encoded block from an encoded block different time, record the read-around ratio of an encoded block; Export after the numbering of the length and width of described bitmap, minimum code unit, coded sequence, encoded block and read-around ratio packing thereof.The present invention also provides corresponding text message transfer system and text message display packing and system, can retain the display effect of output terminal word, and the data volume transmitted is less.
Description
Technical field
The present invention relates to text information processing technical field, particularly relate to a kind of text message transfer approach, a kind of text message transfer system, a kind of text message display packing, and a kind of text message display system.
Background technology
Word is exactly a kind of important way of transmission of information since ancient times, and present people are accustomed to for a long time to sending Word message by network, such as note, microblogging.
But, because some restriction can run into some problems in the application of reality.First, we know that word has a variety of font, it is kept in local operating system with the form of character library, character library is described each word dot matrix or mathematical function curve, coding is used to set up the contact of word to dot matrix or mathematical function curve, the coding of general just transmission word time we transmit word, receiving end only has and it's time to show just according to coding acquisition dot array data or mathematical function curve, then carries out playing up display.This just requires that the both sides of transmitting must have identical character library simultaneously, but there are some embedded devices, such as mobile phone, because the reason such as device memory and performance can not comprise a lot of character library, these some words just causing others to send out cannot show, or cannot reach original display effect; By being transmit text conversion after picture in prior art, but after picture compression, data volume is too large, consumes resources.
Summary of the invention
Based on this, the invention provides a kind of text message transfer approach and text message display packing, the display effect of output terminal word can be retained, and the data volume transmitted is less.
A kind of text message transfer approach, comprises the steps:
Obtain the binaryzation lattice information of word, described lattice information is converted to bitmap;
According to the pixel value of pixel in the minimum code unit preset and described bitmap, determine all encoded block, and described encoded block is numbered;
By preset coded sequence and minimum code unit read described bitmap, read each time current encoded block from an encoded block different time, record the read-around ratio of an encoded block;
Export after the numbering of the length and width of described bitmap, coded sequence, minimum code unit, encoded block and read-around ratio packing thereof.
A kind of text message display packing, comprises the steps:
Receive the text message compressed package of input, wherein, described compressed package comprises the length and width of bitmap, coded sequence, minimum code unit, the numbering of encoded block and read-around ratio thereof;
Generate described bitmap according to the length and width of described bitmap, according to described coded sequence, according to numbering and the read-around ratio thereof of encoded block, number corresponding encoded block by what preset be filled in described bitmap with described.
A kind of text message transfer system, comprising:
Modular converter, for obtaining the binaryzation lattice information of word, is converted to bitmap by described lattice information;
Numbering module, for the pixel value according to pixel in the minimum code unit preset and described bitmap, determines all encoded block, and is numbered described encoded block;
Read module, for by preset coded sequence and minimum code unit read described bitmap, read each time current encoded block from an encoded block different time, record the read-around ratio of an encoded block;
Output module, for exporting after the numbering of the length and width of described bitmap, coded sequence, minimum code unit, encoded block and read-around ratio packing thereof.
A kind of text message display system, comprising:
Receiver module, for receiving the text message compressed package of input, wherein, described compressed package comprises the length and width of bitmap, coded sequence, minimum code unit, the numbering of encoded block and read-around ratio thereof;
Packing module, for generating described bitmap according to the length and width of described bitmap, according to described coded sequence, according to numbering and the read-around ratio thereof of encoded block, numbering corresponding encoded block by what preset be filled in described bitmap with described.
Above-mentioned text message transfer approach and system, text message display packing and system, by obtaining the binaryzation lattice information of word, according to the bitmap that the lattice information of binaryzation generates, can include the pixel that multiple continuous print pixel value is identical; When encoding, the encoded block that record is corresponding and read-around ratio thereof; Substantially increase compression efficiency; And receiving end is according to the data received, according to described coded sequence, according to numbering and the read-around ratio thereof of encoded block, number corresponding encoded block by what preset and fill with described and obtain described bitmap, without the need to the character library support of receiving end, original character display effect can be retained.
Accompanying drawing explanation
Fig. 1 is text message transfer approach of the present invention schematic flow sheet in one embodiment.
Fig. 2 is the lattice information schematic diagram of Chinese character in Fig. 1 " good ".
Fig. 3 is be 16 kinds of encoded block schematic diagram that minimum code unit is corresponding with 2*2 in Fig. 1.
Fig. 4 is text message display packing of the present invention schematic flow sheet in one embodiment.
Fig. 5 is text message transfer system of the present invention structural representation in one embodiment.
Fig. 6 is text message display system of the present invention structural representation in one embodiment.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
As shown in Figure 1, be the schematic flow sheet of a kind of text message transfer approach of the present invention, comprise the steps:
The binaryzation lattice information of S11, acquisition word, is converted to bitmap by described lattice information;
According to the word of user's input, extract type matrix according to word content, font type, font size, from dot matrix word library, extract the lattice information of binaryzation;
Dot matrix word library is a data file, saves the dot array data of all words inside this data file, and dot matrix is exactly monochrome bitmap in essence, it uses a bit to represent a point, if bit is 0, represent certain position not point, if be certain position of 1 expression a little; As shown in Figure 2, be the lattice information schematic diagram of Chinese character in the present embodiment " good "; Wherein dot matrix font can extracting directly, vector fonts need first dot matrixed after extracts again;
Data bitmap is generated according to lattice information, data bitmap is the same with lattice information, be made up of multiple pixel, equally can as shown in Figure 2, each pixel storing pixel values, according to the bitmap that the lattice information of binaryzation generates, contain multiple pixel, the numerical value of pixel only has two kinds of situations, can be 0 or 1, and have the pixel that multiple continuous print pixel value is identical, be conducive to follow-up compression coding.
S12, according to the pixel value of pixel in the minimum code unit preset and described bitmap, determine all encoded block, and described encoded block is numbered;
In a preferred embodiment, the minimum code unit that described basis is preset determines that from described bitmap the step of all encoded block is:
2 are determined according to described default minimum code unit
nMkind store the encoded block of different pixel values, wherein, described default minimum code unit is the rectangle of N*M pixel formation, described N be more than or equal to 1 integer, described M be more than or equal to 1 integer; In described bitmap, the pixel value of each pixel is 0 or 1;
S13, by preset coded sequence and minimum code unit read described bitmap, read each time current encoded block from an encoded block different time, record the read-around ratio of an encoded block;
As shown in Figure 2, the identical pixel of multiple continuous print pixel value is comprised in bitmap; If with each pixel for minimum code unit, whole 32 of the first row is all 0, so direct representation is (32,0), back to back 4 row full 0s can with same method representation, and the 6th row can be expressed as (9,0), and (2,1), (21,0).Due to the characteristic of word, in data bitmap, there will be a large amount of continuous 0 or continuous 1, so use said method greatly can improve ratio of compression; Wherein, the present embodiment reads bitmap with behavior coded sequence, also can be that order reads bitmap according to actual needs with row, or read with Multi-encoding orders such as Z-shaped coded sequences.
According to the feature of bitmap, owing to there is continuous print 0 or continuous print 1, and associate with vertical direction exists in the horizontal direction, in order to consider the relevance in horizontal direction and vertical direction simultaneously, in fact larger minimum code unit can be set, to accelerate coding rate and to improve ratio of compression;
Such as, can arrange 2*2 is minimum code unit, then there will be at most 16 kinds of encoded block as shown in Figure 3, be numbered each encoded block; If read this bitmap with behavior coded sequence, have before can finding out continuous 36 be numbered 0 2*2 dot matrix, so direct representation is (36,0), and then be (1,1) successively, (1,2), (14,0), substantially increases ratio of compression.
Above-described embodiment has set forth cataloged procedure for a Chinese character, can be also multiple bitmaps by the word corresponding conversion of all inputs, encode after splicing all bitmaps again; Or re-encoding after the bitmap splicing of multiple word, specifically can be decided according to the actual requirements.
S14, by the numbering of the length and width of described bitmap, coded sequence, minimum code unit, encoded block and read-around ratio packing after export;
In a preferred embodiment, can the numbering of encoded block and read-around ratio thereof be stored in a byte as one group, described numbering is stored in the high N*M position of each byte, described read-around ratio is stored in low 8-N*M position, wherein, N*M is less than 8, described N be more than or equal to 1 integer, described M be more than or equal to 1 integer; Described default minimum code unit is the rectangle that N*M pixel is formed, can there be multiple choices mode in minimum code unit, as 2*2,2*3,4*4 etc., in the present embodiment, be preferably N*M and be less than 8, prevent corresponding encoded block number too much on the one hand, weaken compression speed, also be convenient to the numbering of encoded block and read-around ratio thereof to be stored in a byte as one group on the other hand, facilitate the Graphics Processing of data packing storage and receiving end.
Wherein, also mark can be added, for recording and identifying above-mentioned coded format, such as, front four bytes are 0x54, 0x58, 0x54, 0x50, as the mark of this coded format, then four bytes are the length of bitmap, then four bytes are the width of bitmap again, then a byte is coded sequence again, 0 represents with behavior sequence, 1 represents with row to be sequence, then a byte is minimum code unit again, preserve N for high 4, M described in low 4 preservations, then four bytes are the total length of data bitmap after subsequent compression again, be finally the data after compression, packed data is one group with each byte, the numbering of the encoded block in Fig. 3 is preserved in the high N*M position of this byte, the read-around ratio of low 8-N*M bit representation encoded block.
As shown in Figure 4, be the schematic flow sheet of a kind of text message display packing of the present invention, comprise the steps:
S41, receive the text message compressed package of input, wherein, described compressed package comprises the length and width of bitmap, coded sequence, minimum code unit, the numbering of encoded block and read-around ratio thereof;
S42, generate described bitmap according to the length and width of described bitmap, according to described coded sequence and minimum code unit, according to numbering and the read-around ratio thereof of encoded block, number corresponding encoded block by what preset be filled in described bitmap with described.
In a preferred embodiment, in described bitmap, the pixel value of each pixel is 0 or 1; Described default minimum code unit is the rectangle that N*M pixel is formed, described N be more than or equal to 1 integer, described M be more than or equal to 1 integer; Described encoded block has 2
nMkind, store different pixel values respectively, wherein, can there be multiple choices mode in minimum code unit, as 2*2,2*3,4*4 etc., in the present embodiment, can be preferably N*M and be less than 8, corresponding encoded block number can be prevented too much, weaken processing speed.
As shown in Figure 5, the invention provides a kind of text message transfer system, comprising:
Modular converter 51, for obtaining the binaryzation lattice information of word, is converted to bitmap by described lattice information;
According to the word of user's input, extract type matrix according to word content, font type, font size, from dot matrix word library, extract the lattice information of binaryzation;
Dot matrix word library is a data file, saves the dot array data of all words inside this data file, and dot matrix is exactly monochrome bitmap in essence, it uses a bit to represent a point, if bit is 0, represent certain position not point, if be certain position of 1 expression a little;
Generate data bitmap according to lattice information, wherein dot matrix font can extracting directly, vector fonts need first dot matrixed after extracts again; Data bitmap is the same with lattice information, be made up of multiple pixel, equally can be as shown in Figure 2, each pixel storing pixel values, according to the bitmap that the lattice information of binaryzation generates, contains multiple pixel, the numerical value of pixel only has two kinds of situations, can be 0 or 1, and have the identical pixel of multiple continuous print pixel value, be conducive to follow-up compression coding.
Numbering module 52, for the pixel value according to pixel in the minimum code unit preset and described bitmap, determines all encoded block, and is numbered described encoded block;
In a preferred embodiment, described numbering module 52 also can be used for:
2 are determined according to described default minimum code unit
nMkind store the encoded block of different pixel values, wherein, described default minimum code unit is the rectangle of N*M pixel formation, described N be more than or equal to 1 integer, described M be more than or equal to 1 integer; In described bitmap, the pixel value of each pixel is 0 or 1;
Read module 53, for by preset coded sequence and minimum code unit read described bitmap, read each time current encoded block from an encoded block different time, record the read-around ratio of an encoded block;
As shown in Figure 2, the identical pixel of multiple continuous print pixel value is comprised in bitmap; If with each pixel for minimum code unit, whole 32 of the first row is all 0, so direct representation is (32,0), back to back 4 row full 0s can with same method representation, and the 6th row can be expressed as (9,0), and (2,1), (21,0).Due to the characteristic of word, in data bitmap, there will be a large amount of continuous 0 or continuous 1, so use said method greatly can improve ratio of compression.
According to the feature of bitmap, owing to there is continuous print 0 or continuous print 1, and associate with vertical direction exists in the horizontal direction, in order to consider the relevance in horizontal direction and vertical direction simultaneously, in fact larger minimum code unit can be set, to accelerate coding rate and to improve ratio of compression;
Such as, can arrange 2*2 is minimum code unit, then there will be at most 16 kinds of encoded block as shown in Figure 3, be numbered each encoded block; If read this bitmap with behavior coded sequence, have before can finding out continuous 36 be numbered 0 2*2 dot matrix, so direct representation is (36,0), and then be (1,1) successively, (1,2), (14,0), substantially increases ratio of compression.
Output module 54, for exporting after the numbering of the length and width of described bitmap, coded sequence, minimum code unit, encoded block and read-around ratio packing thereof;
In a preferred embodiment, described output module 54 also can be used for:
Be stored in a byte using the numbering of encoded block and read-around ratio thereof as one group, described numbering is stored in the high N*M position of each byte, and described read-around ratio is stored in low 8-N*M position, wherein, N*M is less than 8, described N be more than or equal to 1 integer, described M be more than or equal to 1 integer; Described default minimum code unit is the rectangle that N*M pixel is formed, can there be multiple choices mode in minimum code unit, as 2*2,2*3,4*4 etc., in the present embodiment, be preferably N*M and be less than 8, prevent corresponding encoded block number too much on the one hand, weaken compression speed, also be convenient to the numbering of encoded block and read-around ratio thereof to be stored in a byte as one group on the other hand, facilitate the Graphics Processing of data packing storage and receiving end.
Wherein, also mark can be added, for recording and identifying above-mentioned coded format, such as, front four bytes are 0x54, 0x58, 0x54, 0x50, as the mark of this coded format, then four bytes are the length of bitmap, then four bytes are the width of bitmap again, then a byte is coded sequence again, 0 represents with behavior sequence, 1 represents with row to be sequence, then a byte is minimum code unit again, preserve N for high 4, M described in low 4 preservations, then four bytes are the total length of data bitmap after subsequent compression again, be finally the data after compression, packed data is one group with each byte, the numbering of the encoded block in Fig. 3 is preserved in the high N*M position of this byte, the read-around ratio of low 8-N*M bit representation encoded block.
As shown in Figure 6, present invention also offers a kind of text message display system, comprising:
Receiver module 61, for receiving the text message compressed package of input, wherein, described compressed package comprises the length and width of bitmap, coded sequence, minimum code unit, the numbering of encoded block and read-around ratio thereof;
Packing module 62, for generating described bitmap according to the length and width of described bitmap, according to described coded sequence and minimum code unit, according to numbering and the read-around ratio thereof of encoded block, number corresponding encoded block by what preset be filled in described bitmap with described.
In a preferred embodiment, in described bitmap, the pixel value of each pixel is 0 or 1; Described default minimum code unit is the rectangle that N*M pixel is formed, described N be more than or equal to 1 integer, described M be more than or equal to 1 integer; Described encoded block has 2
nMkind, store different pixel values respectively, wherein, can there be multiple choices mode in minimum code unit, as 2*2,2*3,4*4 etc., in the present embodiment, can be preferably N*M and be less than 8, corresponding encoded block number can be prevented too much, weaken processing speed.
Text message transfer approach of the present invention and system, text message display packing and system, by obtaining the binaryzation lattice information of word, according to the bitmap that the lattice information of binaryzation generates, can include the pixel that multiple continuous print pixel value is identical; When encoding, the encoded block that record is corresponding and read-around ratio thereof; Substantially increase compression efficiency; And receiving end is according to the data received, according to described coded sequence, according to numbering and the read-around ratio thereof of encoded block, number corresponding encoded block by what preset and fill with described and obtain described bitmap, without the need to the character library support of receiving end, original character display effect can be retained.
Utilize the present invention, receiving end does not need the support of character library, only needs to carry out decoding display according to predetermined form, and just the word of various for output terminal different style in statu quo can be shown, this is highly profitable for embedded device; On the other hand, after Word Input type matrix being generated the data bitmap of binaryzation, now data will become and will be made up of many consecutive identical data, greatly can improve compression efficiency; Such as, can be applicable in the long microblogging output of Sina's microblogging, existing processing mode is picture by all microblogging text conversion, and general picture compression method, compression efficiency is lower, cause picture larger, when transmission, more network traffics can be consumed, also need more transmission latency simultaneously; And adopting processing mode of the present invention, compression efficiency and transmission speed have greater advantage.
The above embodiment only have expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. a text message transfer approach, is characterized in that, comprises the steps:
Obtain the binaryzation lattice information of word, described lattice information is converted to bitmap;
According to the pixel value of pixel in the minimum code unit preset and described bitmap, determine all encoded block, and described encoded block is numbered;
By preset coded sequence and minimum code unit read described bitmap, read each time current encoded block from an encoded block different time, record the read-around ratio of an encoded block;
Export after the numbering of the length and width of described bitmap, coded sequence, minimum code unit, encoded block and read-around ratio packing thereof.
2. text message transfer approach according to claim 1, is characterized in that, the minimum code unit that described basis is preset determines that from described bitmap the step of all encoded block is:
2 are determined according to described default minimum code unit
nMkind store the encoded block of different pixel values, wherein, described default minimum code unit is the rectangle of N*M pixel formation, described N be more than or equal to 1 integer, described M be more than or equal to 1 integer; In described bitmap, the pixel value of each pixel is 0 or 1.
3. text message transfer approach according to claim 1 and 2, is characterized in that, the described step by output after the numbering of the length and width of described bitmap, coded sequence, minimum code unit, encoded block and read-around ratio encapsulation thereof comprises:
Be stored in a byte using the numbering of encoded block and read-around ratio thereof as one group, described numbering is stored in the high N*M position of each byte, and described read-around ratio is stored in low 8-N*M position, wherein, N*M is less than 8, described N be more than or equal to 1 integer, described M be more than or equal to 1 integer.
4. a text message display packing, is characterized in that, comprises the steps:
Receive the text message compressed package of input, wherein, described compressed package comprises the length and width of bitmap, coded sequence, minimum code unit, the numbering of encoded block and read-around ratio thereof;
Generate described bitmap according to the length and width of described bitmap, according to described coded sequence and minimum code unit, according to numbering and the read-around ratio thereof of encoded block, number corresponding encoded block by what preset be filled in described bitmap with described.
5. text message display packing according to claim 4, is characterized in that:
In described bitmap, the pixel value of each pixel is 0 or 1; Described default minimum code unit is the rectangle that N*M pixel is formed, described N be more than or equal to 1 integer, described M be more than or equal to 1 integer; Described encoded block has 2
nMkind, store different pixel values respectively.
6. a text message transfer system, is characterized in that, comprising:
Modular converter, for obtaining the binaryzation lattice information of word, is converted to bitmap by described lattice information;
Numbering module, for the pixel value according to pixel in the minimum code unit preset and described bitmap, determines all encoded block, and is numbered described encoded block;
Read module, for by preset coded sequence and minimum code unit read described bitmap, read each time current encoded block from an encoded block different time, record the read-around ratio of an encoded block;
Output module, for exporting after the numbering of the length and width of described bitmap, coded sequence, minimum code unit, encoded block and read-around ratio packing thereof.
7. text message transfer system according to claim 6, is characterized in that, described numbering module also for:
2 are determined according to described default minimum code unit
nMkind store the encoded block of different pixel values, wherein, described default minimum code unit is the rectangle of N*M pixel formation, described N be more than or equal to 1 integer, described M be more than or equal to 1 integer; In described bitmap, the pixel value of each pixel is 0 or 1.
8. the text message transfer system according to claim 6 or 7, is characterized in that, described output module also for:
Be stored in a byte using the numbering of encoded block and read-around ratio thereof as one group, described numbering is stored in the high N*M position of each byte, and described read-around ratio is stored in low 8-N*M position, and wherein N*M is less than 8.
9. a text message display system, is characterized in that, comprising:
Receiver module, for receiving the text message compressed package of input, wherein, described compressed package comprises the length and width of bitmap, coded sequence, minimum code unit, the numbering of encoded block and read-around ratio thereof;
Packing module, for generating described bitmap according to the length and width of described bitmap, according to described coded sequence and minimum code unit, according to numbering and the read-around ratio thereof of encoded block, numbering corresponding encoded block by what preset be filled in described bitmap with described.
10. text message display system according to claim 9, is characterized in that:
In described bitmap, the pixel value of each pixel is 0 or 1; Described default minimum code unit is the rectangle that N*M pixel is formed, described N be more than or equal to 1 integer, described M be more than or equal to 1 integer; Described encoded block has 2
nMkind, store different pixel values respectively.
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| US7212313B1 (en) * | 1999-05-25 | 2007-05-01 | Adobe Systems Incorporated | Reducing storage requirements for display data |
| CN101005680A (en) * | 2007-01-19 | 2007-07-25 | 华为技术有限公司 | Method for information transmission and display, electronic device and electronic apparatus |
| US7532221B2 (en) * | 2004-11-02 | 2009-05-12 | Microsoft Corporation | Texture-based packing, such as for packing 16-bit pixels into four bits |
| US7639258B1 (en) * | 2004-03-31 | 2009-12-29 | Adobe Systems Incorporated | Winding order test for digital fonts |
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| US5910805A (en) * | 1996-01-11 | 1999-06-08 | Oclc Online Computer Library Center | Method for displaying bitmap derived text at a display having limited pixel-to-pixel spacing resolution |
| US7212313B1 (en) * | 1999-05-25 | 2007-05-01 | Adobe Systems Incorporated | Reducing storage requirements for display data |
| US7639258B1 (en) * | 2004-03-31 | 2009-12-29 | Adobe Systems Incorporated | Winding order test for digital fonts |
| US7532221B2 (en) * | 2004-11-02 | 2009-05-12 | Microsoft Corporation | Texture-based packing, such as for packing 16-bit pixels into four bits |
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