CN2779484Y - A universal compressed Chinese character library chip - Google Patents
A universal compressed Chinese character library chip Download PDFInfo
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- CN2779484Y CN2779484Y CN 200520041020 CN200520041020U CN2779484Y CN 2779484 Y CN2779484 Y CN 2779484Y CN 200520041020 CN200520041020 CN 200520041020 CN 200520041020 U CN200520041020 U CN 200520041020U CN 2779484 Y CN2779484 Y CN 2779484Y
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Abstract
The utility model relates to a universal compressed Chinese character library chip, which comprises a read-only memory, a decompression processor and a read-write memory, wherein the read-only memory is used for storing compressed character library font data, the decompression processor is used for the regeneration of the data of the compressed character library fonts, the read-write memory is connected to the decompression processor and is used for running programs, and the decompression processor is also used as the CPU of an application host. By adopting the technical scheme, the utility model uses the character library decompression processor as the CPU of the application host simultaneously and the rate of resource utilization is enhanced. In addition, the utility model upgrades the original compressed Chinese character library chip, the memory capacity of the application host and the burden of the CPU can be reduced, and the problems such as the seldom used characters can not be displayed, etc. are solved; meanwhile, the high quality display or print of small dot-matrix Chinese characters is ensured, and the multiple output type of a Chinese character library is perfected.
Description
Technical field
The utility model relates to a kind of Chinese character memory chip, relates in particular to a kind of universal compressed Chinese character memory chip.
Background technology
Usually Chinese character base has two kinds: the first, and the non-compression Chinese character base of little dot matrix (as 16X16) is solidificated in the memory chip usually; The second, high lattice compression curved profile Chinese character base is installed in the PC hard disk usually.Often need to take bigger memory space (every kind of font is up to 3MB) for second kind, need use hard disk.
Aspect the raising compression ratio technique very big progress is being arranged though have now, also 3MB can be compressed to below the 0.5MB, can be solidificated in the chip, save hard disk, must rely on operation system of software, compiler language (as Windows operating system, C language) and the hardware platform (as Pentium CPU processor) that information equipment provides but fundamental drawback is to compress the operation of the gunzip of Chinese character base.And the software and hardware specification of messaging device is various at present, and this just requires to develop the Chinese character base gunzip again at each different equipment platform, has limited applying of high lattice compression Chinese character base greatly.
Therefore the applicant was the compression Chinese character memory chip that discloses a kind of highly versatile among the ZL02111050.6 in the patent No. once, be characterized in, it comprises ROM (read-only memory), the decompression processor that is used to compress the Chinese character base reduction that links to each other with this storer (containing the storer that compresses Chinese character base), and wherein: this storer has decompress(ion) program and character library packed data memory function; This decompression processor has processing capacity and font parameter is deposited, memory function is deposited and cushioned to the font size parameter.This invention makes the compression Chinese character base carry restoring function, decompression needn't rely on the processor of application apparatus, rely on the decompression processor of self to finish the reduction of compression Chinese character base, application apparatus only needs to compress Chinese character base and is considered as simple non-compressed information Chinese library and calls, thereby the software of the character library of accomplishing and application apparatus, hardware bottom layer have nothing to do, can be extremely easy satisfy the demand of various messaging devices to the compression Chinese character base, the Chinese character that is applicable to various messaging devices shows and prints.
Because above-mentioned character library decompression processor arithmetic capability is very powerful, can satisfy the performance requirement of applied host machine to central processing unit fully, if it only is undoubtedly a kind of wasting of resources as the decompression processor of character library special use.In addition, also there is following point in this compression Chinese character memory chip:
The first, the decompress(ion) program only resides in the ROM (read-only memory), and during operation decompress(ion) program, processor is the fetch program from ROM (read-only memory) directly, slow 3 to 5 times of the reading speeds of common ROM (read-only memory) than read-write memory, so travelling speed is difficult to improve.
Second, one cover little dot matrix (15 * 16 dot matrix) Chinese character only is provided, be difficult to guarantee the font quality of little dot matrix Chinese character (24 * 24 dot matrix are following), for guaranteeing must the font quality, the little matrix Chinese character bank of many covers (as 11 * 12 points, 15 * 16 points, 19 * 20 points, 24 * 24 etc.) need be arranged, and this will take too many ROM capacity.
The 3rd, because the non-singularity of the character set standard of present Chinese character base, as GB character set GB2312, GB12345, GB13000, GB18030, international code Unicode, Big5 BIG5 etc.The Chinese character base user of different regions uses the character set of various criterion, and the character set of various criterion is incompatible, and therefore, the Chinese character base user of different regions just has inconvenience when exchanging mutually, for example, will produce mess code when the cellphone subscriber sends short messages mutually.Though former patent is supported multiple character set standard, its required word-base data storage space is very huge, causes chip cost to increase greatly.
The 4th; for satisfying needs to deserted word; we can adopt large character set GB18030 (27 usually; 533 Chinese characters); but, as adopt former patent library stores scheme in view of its memory space is 4 times of GB2312 (6,763 Chinese character); when the storing multiple sets font, can't take into account the big contradiction of number of words complete sum memory space.
In addition, be the pattern of perfect Chinese character storehouse output, the different array formats of, italic wide to word height, word, underscore and output dot matrix etc. have proposed the improvement demand.
The utility model content
The defective and the growth requirement of the compression Chinese character memory chip that the basis is above-mentioned, the purpose of this utility model is to upgrade on the basis of former compression Chinese character memory chip, a kind of universal compressed Chinese character memory chip is provided, not only can reduce the burden of applied host machine memory capacity and central processing unit, more can solve such as problems such as deserted word can't show, and guarantee the high-quality display of little dot matrix Chinese character, the multi-output type formula in perfect Chinese character storehouse simultaneously.
A kind of universal compressed Chinese character memory chip provided by the utility model, comprise the ROM (read-only memory) that has the compressed information Chinese library font data and be used for the decompression processor that the compressed information Chinese library font data reduces, it is characterized in that, it also comprises the read-write memory that is used for working procedure that links to each other with described decompression processor, wherein: decompression processor, be used to be provided with the ISN of appointment, the character set parameter of appointment, different fonts is set, font size, the word height, wide and the italic of word, underscore, the outline letters font, and different output dot matrix array formats is set, the central processing unit of double as applied host machine also, according to character set parameter and code table, the different piece of the merge content of the some cover kinds of characters collection word-base data same sections in curve Chinese character base packed data and the matrix Chinese character bank packed data with storage respectively reconfigured, become the complete character library packed data of designated character collection; ROM (read-only memory) is used to be mounted with code table, curve gunzip, dot matrix gunzip, curve Chinese character base packed data, extra curvature Chinese character packed data, matrix Chinese character bank packed data and dot matrix foreign language character compression data; Read-write memory is used for the read-write of the program of resident program, the read-write storage in operation and buffering space, with between the applied host machine bus to realize communicating by letter with clock synchronization mode;
In above-mentioned universal compressed Chinese character memory chip, read-write memory contains the twoport bus logic, realizes efficient communication with asynchronous system between itself and the applied host machine bus.
In above-mentioned universal compressed Chinese character memory chip, the packed data of the dot matrix word library in the ROM (read-only memory) adopts distortionless Huffman compress mode.
In above-mentioned universal compressed Chinese character memory chip, the packed data of the dot matrix word library in the ROM (read-only memory) adopts the arithmetic coding mode.
In above-mentioned universal compressed Chinese character memory chip, ROM (read-only memory) comprises the code table unit, described decompression processor comprises the code table flag register, code table unit in the ROM (read-only memory) links to each other with code table flag register in the decompression processor, the same section of some cover kinds of characters collection character library packed datas is merged storage, only different piece is stored respectively, decompression processor is according to the character set parameter of appointment in the code table flag register, assembling section in the word-base data and different piece are reconfigured, become the complete word-base data of designated character collection.
Adopted above-mentioned technical solution, the utility model simultaneously as the central processing unit of applied host machine, has improved resource utilization with the character library decompression processor.In addition, the utility model is upgraded to former compression Chinese character memory chip, has following advantage:
The first, the gunzip in the ROM (read-only memory) is resided in read-write memory program read-write cell, read-write memory is with zero wait state high-speed cruising decompress(ion) program, and do not take the read-write memory resource of applied host machine.
The second, except containing curve Chinese character base packed data unit, also include the little dot matrix character data of many covers through overcompression, in the high-quality output of satisfying little dot matrix font, shared memory space is reduced to minimum.
The 3rd, provide curve Chinese character base packed data unit and matrix Chinese character bank packed data unit, the character set of promptly many cover Chinese character basies, different compatible problems when exchanging mutually with the Chinese character base user who solves different regions, various criterion character set.And the same section in the kinds of characters collection word-base data is merged, and different piece and same section with required character set word-base data during decompression are reassembled into complete word-base data, to reach, have both supported many cover character set, save storage space again.
The 4th, character library (as the Song typeface) commonly used is adopted large character set, and with satisfied needs to deserted word, and other non-common font (as lishu) adopts basic character set, the number of words that non-common font lacked is substituted with font acquiescence commonly used, to take into account the big contradiction of number of words complete sum memory space.
In addition, also provide the font parameter register in the decompression processor, the pattern of perfect Chinese character base output has satisfied the improvement demand of the different array formats of, italic wide to word height, word, underscore and output dot matrix.
Description of drawings
Fig. 1 is the circuit structure block diagram of the universal compressed Chinese character memory chip of the utility model.
Embodiment
As shown in Figure 1, the utility model, being universal compressed Chinese character memory chip 1 is made up of the ROM (read-only memory) 3 that has the compressed information Chinese library font data, the read-write memory 4 that is used for the decompression processor 2 of compressed information Chinese library font data reduction and is used for working procedure, comprises that also communication bus 5 and code table are provided with pin T0, T1.
Decompression processor, be used to be provided with ISN, the appointment of appointment the character set parameter, different fonts, font size, word height are set, word is wide and italic, underscore, outline letters font, and different output dot matrix array formats is set, the central processing unit of double as applied host machine also, according to character set parameter and code table, the different piece of the merge content of the some cover kinds of characters collection word-base data same sections in curve Chinese character base packed data and the matrix Chinese character bank packed data with storage respectively reconfigured, become the complete character library packed data of designated character collection.Can adopt SAMSUNG company model is the cpu chip of S3C2410 * 01.
ROM (read-only memory) is used to be mounted with code table, curve gunzip, dot matrix gunzip, curve Chinese character base packed data, extra curvature Chinese character packed data, matrix Chinese character bank packed data and dot matrix foreign language character compression data.The packed data of the dot matrix word library in this ROM (read-only memory) adopts distortionless Huffman compress mode or arithmetic coding mode.Can adopt MAXIC company model is the chip of MX23L12810.
Read-write memory is used for the program of resident program read-write storage, the read-write storage in operation and buffering space, with between the applied host machine bus to realize communicating by letter with clock synchronization mode.This read-write memory contains the twoport bus logic, realizes efficient communication with asynchronous system between itself and the applied host machine bus.Can adopt SAMSUNG company model is the chip of K6F1008U2C.
Above CPU, MASK ROM and SRAM three chips all adopt nude film, are encapsulated as single-chip, offer applied host machine.Can adopt the single nude film or two nude films of customization to be encapsulated as single-chip during volume production.
Above-mentioned ROM (read-only memory) comprises the code table unit, decompression processor comprises the code table flag register, code table unit in the ROM (read-only memory) links to each other with code table flag register in the decompression processor, the same section of some cover kinds of characters collection character library packed datas is merged storage, only different piece is stored respectively, decompression processor is according to the character set parameter of appointment in the code table flag register, assembling section in the word-base data and different piece are reconfigured, become the complete word-base data of designated character collection.
During character library dot array data after applied host machine 7 need read reduction the universal compressed Chinese character memory chip 1 from the utility model, sending order parameters such as Chinese character set code table sign, Hanzi internal code numerical value, font parameter, font size parameter, font parameter and output format to decompression processor 2 by communication bus 5 (comprising data bus, address bus and control signal) gets final product, the code table sign also can directly be provided with the different high electronegative potential of pin T0, T1 by the code table that chip is set, send with hardware mode.
Claims (5)
1. universal compressed Chinese character memory chip, comprise the ROM (read-only memory) that has the compressed information Chinese library font data and be used for the decompression processor that the compressed information Chinese library font data reduces, it is characterized in that it also comprises the read-write memory that is used for working procedure that links to each other with described decompression processor, wherein:
Decompression processor, be used to be provided with ISN, the appointment of appointment the character set parameter, different fonts, font size, word height are set, word is wide and italic, underscore, outline letters font, and different output dot matrix array formats is set, the central processing unit of double as applied host machine also, according to character set parameter and code table, the different piece of the merge content of the some cover kinds of characters collection word-base data same sections in curve Chinese character base packed data and the matrix Chinese character bank packed data with storage respectively reconfigured, become the complete character library packed data of designated character collection;
ROM (read-only memory) is used to be mounted with code table, curve gunzip, dot matrix gunzip, curve Chinese character base packed data, extra curvature Chinese character packed data, matrix Chinese character bank packed data and dot matrix foreign language character compression data;
Read-write memory is used for the read-write of the program of resident program, the read-write storage in operation and buffering space, with between the applied host machine bus to realize communicating by letter with clock synchronization mode;
2. universal compressed Chinese character memory chip according to claim 1 is characterized in that described read-write memory contains the twoport bus logic, realizes efficient communication with asynchronous system between itself and the applied host machine bus.
3. universal compressed Chinese character memory chip according to claim 1 is characterized in that, the packed data of the dot matrix word library in the described ROM (read-only memory) adopts distortionless Huffman compress mode.
4. universal compressed Chinese character memory chip according to claim 1 is characterized in that, the packed data of the dot matrix word library in the described ROM (read-only memory) adopts the arithmetic coding mode.
5. universal compressed Chinese character memory chip according to claim 1, it is characterized in that, described ROM (read-only memory) comprises the code table unit, described decompression processor comprises the code table flag register, code table unit in the ROM (read-only memory) links to each other with code table flag register in the decompression processor, the same section of some cover kinds of characters collection character library packed datas is merged storage, only different piece is stored respectively, decompression processor is according to the character set parameter of appointment in the code table flag register, assembling section in the word-base data and different piece are reconfigured, become the complete word-base data of designated character collection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520041020 CN2779484Y (en) | 2005-04-21 | 2005-04-21 | A universal compressed Chinese character library chip |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520041020 CN2779484Y (en) | 2005-04-21 | 2005-04-21 | A universal compressed Chinese character library chip |
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| CN2779484Y true CN2779484Y (en) | 2006-05-10 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101266775B (en) * | 2008-04-25 | 2010-08-11 | 嘉兴闻泰通讯科技有限公司 | Compression storage method and decompression method for lattice word library |
| CN102467490A (en) * | 2010-11-01 | 2012-05-23 | 北大方正集团有限公司 | Font data processing method and device |
| CN101996192B (en) * | 2009-08-19 | 2013-03-06 | 北大方正集团有限公司 | Word stock combining method and system |
| CN109358901A (en) * | 2018-12-06 | 2019-02-19 | 深圳高通半导体有限公司 | A kind of processor chips and implementation method of decodable code dot matrix word library |
-
2005
- 2005-04-21 CN CN 200520041020 patent/CN2779484Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101266775B (en) * | 2008-04-25 | 2010-08-11 | 嘉兴闻泰通讯科技有限公司 | Compression storage method and decompression method for lattice word library |
| CN101996192B (en) * | 2009-08-19 | 2013-03-06 | 北大方正集团有限公司 | Word stock combining method and system |
| CN102467490A (en) * | 2010-11-01 | 2012-05-23 | 北大方正集团有限公司 | Font data processing method and device |
| CN102467490B (en) * | 2010-11-01 | 2014-01-01 | 北大方正集团有限公司 | Font data processing method and device |
| CN109358901A (en) * | 2018-12-06 | 2019-02-19 | 深圳高通半导体有限公司 | A kind of processor chips and implementation method of decodable code dot matrix word library |
| CN109358901B (en) * | 2018-12-06 | 2023-08-25 | 深圳高通半导体有限公司 | Processor chip capable of decoding dot matrix word stock and implementation method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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| CX01 | Expiry of patent term |
Expiration termination date: 20150421 Granted publication date: 20060510 |