CN102262784A - Method for coding and decoding word library based on image compression - Google Patents
Method for coding and decoding word library based on image compression Download PDFInfo
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- CN102262784A CN102262784A CN2011102211662A CN201110221166A CN102262784A CN 102262784 A CN102262784 A CN 102262784A CN 2011102211662 A CN2011102211662 A CN 2011102211662A CN 201110221166 A CN201110221166 A CN 201110221166A CN 102262784 A CN102262784 A CN 102262784A
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Abstract
The invention provides a method for coding a word library based on image compression. The method comprises the following steps of: reading files of the word library, analyzing file information, acquiring the dot matrix gray data of the word library, and generating bitmap data according to file information; performing image-based compression on the generated bitmap data; after compression, generating compressed files of the word library and memorizing the files of the word library into a memory; generating the index file information of the word library and memorizing the index file information of the word library into the memory; starting an embedded system; and reading the compressed files in the memory into an internal memory of the embedded system. The method for coding the word library based on the image compression provided by the invention is an inverse process of a coding method. By the method, the memory efficiency of the word library is greatly improved, so that the system can integrate more font information of the word library.
Description
Technical field
The present invention relates to the embedded system field, particularly based on the character library encoding and decoding technique of compression of images.
Background technology
Embedded system provides increasing font Presentation Function at present; and the support that provides multinational character library to show; but in this type systematic; run into such situation through regular meeting: the storage space deficiency; can't write down more character library information, bring and big restriction to Embedded System Design.
Summary of the invention
The invention provides a kind of word-base code method, comprising based on compression of images:
Step 101: read font file, Study document information is obtained the word lattice gradation data and is generated data bitmap according to fileinfo;
Here Study document information comprises that font information, character library divide page information, character library index code information etc., wherein character library index code information is the corresponding UNICODE coding of character library or other type of coding, as in the Hanzi font library " eh " and UNICODE be encoded to 0x554A, GB2312 is encoded to 0xB0A1.
Here the data bitmap of Sheng Chenging is the image file that divides page information to generate according to the font image feature according to the character library in the fileinfo.
Step 102: the data bitmap that step 101 generated is carried out handling based on the compression of image, as compression modes such as ZIP, PNG compression of images, JPG compression of images, the data processing of compression back execution in step 103, step 104;
Step 103: generate the character library compressed file;
Step 104: generate character library index file information, comprise font bitmap coordinated indexing and font code index information;
Step 105: the file storage that step 103, step 104 are generated arrives storer, as FLASH, storage card etc.;
Step 106: start embedded system;
Step 107: read the internal memory of memory compression file to embedded system.
The present invention also provides a kind of character library coding/decoding method based on compression of images, may further comprise the steps:
Step 201: read the internal memory of compressed file to embedded system, compressed file comprises character library compressed file and character library index file for the packed data that word-base code generated based on compression of images here;
Step 202: the internal storage data that step 201 reads is done to decode based on the character library of compression of images;
The character library decoding based on compression of images here generates two data files, comprises character library data bitmap and character library index data, and two data files offer step 203 and step 204 respectively and handle;
Step 203: generate character library data bitmap file;
Step 204: generate character library index data file;
Step 205: analyze data bitmap information;
Step 206: generate font dot matrix gradation data;
Step 207: display font dot matrix gradation data.
After carry out step 205, can also carry out following steps before 206:
Step 208: generate Huffman (Huffman) table, image is carried out the internal storage data compression according to Huffman (Huffman) table that generates;
Here the Huffman of Sheng Chenging (Huffman) table is the concordance list that generates according to Huffman (Huffman) tree, Huffman (Huffman) tree is the shortest tree of a class cum rights path, can effectively carry out simple lossless compress and handle, improve the memory utilization factor data;
Step 209: storage is through the internal memory of step 208 second-compressed data to embedded system;
Step 210: the character library concordance list data file information that finding step 204 generates;
Here the information that needs to search comprises that font information, character library divide page information, character library index code information, Huffman (Huffman) table etc., obtains the character library second-compressed data according to information from the internal storage data that step 209 generates.
Step 211:, data are carried out Huffman (Huffman) decoding according to the second-compressed data that step 210 is obtained;
Return step 206.
Utilize the character library encoding and decoding based on compression of images provided by the invention, according to the character library information extraction character library dot matrix gradation data that writes down in the file that generates in advance, and through compression based on image, generate character library compressed file and character library index file, the storage space that the compressed file that generates takies is far smaller than the shared space of former dot matrix character library, greatly improved the storage efficiency of character library, made the system can integrated more character library font information.
Description of drawings
Fig. 1 among the present invention based on the storehouse coding method of the word-base code word of compression of images.
The character library coding/decoding method of Fig. 2 for decoding based on the character library of compression of images among the present invention.
Embodiment
The embodiment of the invention provides a kind of word-base code method based on compression of images, in an embodiment of the present invention, the dot matrix gradation data of character library is organized in the bitmap mode, and according to bitmap generation character library concordance list, store in the storer according to bitmap that generates and concordance list generation compressed file during word-base code, when system start-up, read packed data to internal memory.
The embodiment of the invention also provides a kind of character library decoding based on compression of images, in an embodiment of the present invention, read compressed file, during decoding the compressed file decoding is restored data bitmap and index data, further analyze data bitmap, generate Huffman (Huffman) table, the recompile data bitmap also stores internal memory into, finds the internal memory word-base data and shows output according to concordance list.
In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention is further described below in conjunction with accompanying drawing.
Fig. 1 be in the embodiment of the invention based on the process flow diagram of the word-base code of compression of images, as shown in Figure 1, the word-base code based on compression of images in the embodiments of the invention may further comprise the steps:
Step 101: read font file, Study document information is obtained the word lattice gradation data and is generated data bitmap according to fileinfo;
Here the fileinfo of Fen Xiing comprises that font information, character library divide page information, character library index code information etc., wherein character library index code information is the corresponding UNICODE coding of character library or other type of coding, as in the Hanzi font library " eh " and UNICODE be encoded to 0x554A, GB2312 is encoded to 0xB0A1.
Here the data bitmap of Sheng Chenging is the image file that divides page information to generate according to the font image feature according to the character library in the fileinfo.
Step 102: the data bitmap that step 101 generated is carried out handling based on the compression of image, as compression modes such as ZIP, PNG compression of images, JPG compression of images, the data processing of compression back execution in step 103, step 104;
Step 103: generate the character library compressed file;
Step 104: generate character library index file information, comprise font bitmap coordinated indexing and font code index information;
Step 105: the file storage that step 103, step 104 are generated arrives storer, as FLASH, storage card etc.;
Step 106: start embedded system;
Step 107: read the internal memory of memory compression file to embedded system.
Fig. 2 is the process flow diagram of decoding based on the character library of compression of images in the embodiment of the invention, and as shown in Figure 2, the character library decoding based on compression of images in the embodiments of the invention may further comprise the steps:
Step 201: read the internal memory of compressed file to embedded system, compressed file comprises character library compressed file and character library index file for the packed data that word-base code generated based on compression of images here;
Step 202: the internal storage data that step 201 reads is done to decode based on the character library of compression of images;
The character library decoding based on compression of images here generates two data files, comprises character library data bitmap and character library index data, and two data files offer step 203 and step 204 respectively and handle;
Step 203: generate character library data bitmap file;
Step 204: generate character library index data file;
Step 205: analyze data bitmap information;
Step 206: generate font dot matrix gradation data;
Step 207: display font dot matrix gradation data.
After carry out step 205, can also carry out following steps before 206:
Step 208: generate Huffman (Huffman) table, image is carried out the internal storage data compression according to Huffman (Huffman) table that generates;
Continue described step 206 then.
Here the Huffman of Sheng Chenging (Huffman) table is the concordance list that generates according to Huffman (Huffman) tree, Huffman (Huffman) tree is the shortest tree of a class cum rights path, can effectively carry out simple lossless compress and handle, improve the memory utilization factor data;
Step 209: storage is through the internal memory of step 208 second-compressed data to embedded system;
Step 210: the character library concordance list data file information that finding step 204 generates
Here the information that needs to search comprises that font information, character library divide page information, character library index code information, Huffman (Huffman) table etc., obtains the character library second-compressed data according to information from the internal storage data that step 209 generates.
Step 211:, data are carried out Huffman (Huffman) decoding according to the second-compressed data that step 210 is obtained.
Claims (5)
1. based on the word-base code of compression of images, it is characterized in that may further comprise the steps:
Step 101: read font file, Study document information is obtained character library dot matrix gradation data and is generated data bitmap according to fileinfo;
Step 102: the data bitmap that step 101 generated is carried out handling based on the compression of image the data processing of compression back execution in step 103, step 104;
Step 103: generate the character library compressed file;
Step 104: generate character library index file information, comprise font bitmap coordinated indexing and font code index information;
Step 105: the compressed file that step 103, step 104 are generated stores storer into;
Step 106: start embedded system;
Step 107: read the internal memory of memory compression file to embedded system.
2. a kind of according to claim 1 word-base code based on compression of images is characterized in that described Study document information comprises that font information, character library divide page information, character library index code information.
3. a kind of according to claim 1 word-base code based on compression of images is characterized in that described generation data bitmap is the image file that divides page information to generate according to the font image feature according to the character library in the fileinfo, and based on compression of images character library view data.
4. based on the character library decoding of compression of images, it is characterized in that may further comprise the steps:
Step 201: read the internal memory of compressed file to embedded system, described compressed file comprises character library compressed file and character library index file for the packed data that word-base code generated based on compression of images;
Step 202: the internal storage data that step 201 reads is done to decode based on the character library of compression of images;
Character library decoding based on compression of images generates two data files, comprises character library data bitmap and character library index data, and two data files offer step 203 and step 204 respectively and handle;
Step 203: generate character library data bitmap file;
Step 204: generate character library index data file;
Step 205: analyze data bitmap information;
Step 206: generate font dot matrix gradation data;
Step 207: display font dot matrix gradation data.
5. as a kind of character library decoding as described in the claim 4, it is characterized in that based on compression of images, carry out step 205 after, before 206, can also carry out following steps:
Step 208: generate Huffman (Huffman) table, image is carried out the internal storage data compression according to Huffman (Huffman) table that generates;
Step 209: storage is through the internal memory of step 208 second-compressed data to embedded system;
Step 210: the character library concordance list data file information that finding step 204 generates;
Required information of searching comprises that font information, character library divide page information, character library index code information, Huffman (Huffman) table, obtains the character library second-compressed data according to information from the internal storage data that step 209 generates;
Step 211:, data are carried out Huffman (Huffman) decoding according to the second-compressed data that step 210 is obtained;
Return step 206.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102708191A (en) * | 2012-05-15 | 2012-10-03 | 通唐软件技术（湖南）有限公司 | Word stock coding and decoding method capable of saving memory |
| CN110164399A (en) * | 2019-07-01 | 2019-08-23 | 深圳市卡迪智能科技有限公司 | 8 bit depth type matrix storage optimization methods |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020087702A1 (en) * | 2000-12-29 | 2002-07-04 | Koichi Mori | Remote contents displaying method with adaptive remote font |
| CN1983239A (en) * | 2006-04-06 | 2007-06-20 | 华为技术有限公司 | Method and system for inputting and displaying character |
| CN101008939A (en) * | 2007-01-25 | 2007-08-01 | 深圳创维－Rgb电子有限公司 | Implementation method of dot matrix word library of embedded system |
| CN101192212A (en) * | 2006-11-20 | 2008-06-04 | 中兴通讯股份有限公司 | System and method for implementing font with frame on terminal |
| CN101261825A (en) * | 2008-04-24 | 2008-09-10 | 中兴通讯股份有限公司 | A word library management method for mobile terminal system |
| CN101625848A (en) * | 2009-07-28 | 2010-01-13 | 宁波新然电子信息科技发展有限公司 | Realization method of vector font library oriented to embedded platform |
-
2011
- 2011-08-02 CN CN 201110221166 patent/CN102262784B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020087702A1 (en) * | 2000-12-29 | 2002-07-04 | Koichi Mori | Remote contents displaying method with adaptive remote font |
| CN1983239A (en) * | 2006-04-06 | 2007-06-20 | 华为技术有限公司 | Method and system for inputting and displaying character |
| CN101192212A (en) * | 2006-11-20 | 2008-06-04 | 中兴通讯股份有限公司 | System and method for implementing font with frame on terminal |
| CN101008939A (en) * | 2007-01-25 | 2007-08-01 | 深圳创维－Rgb电子有限公司 | Implementation method of dot matrix word library of embedded system |
| CN101261825A (en) * | 2008-04-24 | 2008-09-10 | 中兴通讯股份有限公司 | A word library management method for mobile terminal system |
| CN101625848A (en) * | 2009-07-28 | 2010-01-13 | 宁波新然电子信息科技发展有限公司 | Realization method of vector font library oriented to embedded platform |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102708191A (en) * | 2012-05-15 | 2012-10-03 | 通唐软件技术（湖南）有限公司 | Word stock coding and decoding method capable of saving memory |
| CN110164399A (en) * | 2019-07-01 | 2019-08-23 | 深圳市卡迪智能科技有限公司 | 8 bit depth type matrix storage optimization methods |
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