CN104133796A - Method and device for coding and decoding image in smart mobile terminal LK - Google Patents
Method and device for coding and decoding image in smart mobile terminal LK Download PDFInfo
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Abstract
The invention discloses a method for coding and decoding image in a smart mobile terminal LK. The method is applied to smart mobile terminals. The method comprises the following steps that (1) all original images which need to be displayed on a start-up interface are compressed through a compression algorithm; (2) a data structure containing the resolution ratio and size information of the compressed images is stored and written into a file of a specified format together with the compressed image data; (3) the file of the specified format is written into a LOGO partition; (4) as the LK is started, the file of the specified format in the LOGO partition is read; (5) LOGO images are uncompressed through an uncompressing algorithm; (6) the uncompressed images are displayed on the start-up interface. According to the method, the start-up LOGO images are coded and decoded in the LK, the restriction on the capacity and space of the LOGO partition can be remarkably broken, disk space is saved, display of the start-up LOGO images are accelerated, and user experience is improved.
Description
Technical field
The present invention relates to the technical field of intelligent mobile terminal application technology, particularly method and the device of encoding and decoding picture in a kind of intelligent mobile terminal LK.
Background technology
In order to show better brand image, each mobile phone manufacturing enterprise all can be in mobile phone power-on, shows the LOGO of own company, and conventionally in the start-up course of whole mobile phone, the loading of LOGO completes in LK.Because LK is a little kernel (little kernel), do not possess the ability of the picture formats such as decoding PNG, JPEG, BMP, in LK, picture is all deposited with RAW form.The picture of RAW form is the original image of uncompressed, and a pixel is by tri-color component direct representations of RGB.In the time that the resolution of screen is smaller, LOGO picture is to be directly kept in LK, but in the time that screen resolution increases to 1920*1080, the size of individual picture has just reached 6M.The normally 10M of maximum size of LK firmware at present, if while needing in LK to retain more than 2 or 2 pictures, will exceed the space constraint of LK, causes LK correctly to compile.
Present most of mobile phone is all the screen of 1080P, and boot LOGO generally comprises startup LOGO, the LOGO of shutdown charging etc. of normal startup LOGO, Fastboot pattern, and all pictures are added up and exceeded for a long time 10M.The way of part producer is that LOGO picture is left in the mass storage of mobile phone at present, by a LOGO subregion of special establishment in mass storage, is used for preserving LOGO picture.
In mass storage, the size of LOGO subregion is generally 8M, in the later stage of mobile phone development, if need to increase LOGO picture, will cause the size of LOGO subregion still not enough, and this carries out dilatation again just need to LOGO partition size.The size of amendment disk partition, need to format whole file system, and the data that at this moment user preserves in storage system all can be lost, and this is that very bad user experiences.Even if LOGO subregion capacity is increased to 16M or 24M, also always have not enough one day, as the mobile phone of later development 4K screen, individual picture has just reached 24M, and the contradiction that how to overcome the growth of giant-screen mobile phone power-on LOGO picture size and limited LOGO subregion capacity is current intelligent mobile terminal application technical matters urgently to be resolved hurrily.
Summary of the invention
The shortcoming that the object of the invention is to overcome prior art is with not enough, the method of encoding and decoding picture in a kind of intelligent mobile terminal LK is provided, the method is by the picture of compression RAW form, and be kept in LOGO subregion, in start, LK reads the image data compression from LOGO subregion, after decompression by LOGO Image Display in starting-up interface.
Another object of the present invention is to provide the device of encoding and decoding picture in a kind of intelligent mobile terminal LK.
First object of the present invention is achieved through the following technical solutions:
A method for encoding and decoding picture in intelligent mobile terminal LK, is applied in intelligent mobile terminal equipment, it is characterized in that, comprises the following steps:
S1, all original images that need to show in starting-up interface of use compression algorithm compression;
S2, the data structure that comprises compressed picture resolution and size information is saved, write in the file of specified format together with the view data after compression in step S1;
S3, the file of specified format is write in LOGO subregion;
In S4, the process that starts at LK, read the file of specified format in LOGO subregion;
S5, use decompression algorithm, decompress(ion) LOGO picture;
S6, in starting-up interface, show the picture after decompress(ion).
Preferably, the original image in described step S1 is the picture of raw form.
Preferably, the compression algorithm in described step S1 specifically comprises the following steps:
S11, open the original image of raw form that needs compression with read-only mode, definition counter variable count initial value assignment are 0, definition character variable old initial value assignment are 0, and definition character variable new initial value assignment are 0, then create and open compressed file with read-write mode;
S12, from original image file, read a character, leave in character variable new;
If S13 character variable new equals end-of-file mark EOF, go to step S110, otherwise enter step S14;
S14, judge whether counter variable count equals 0, if equal 0, enter step S15, otherwise enter step S16;
S15, in compressed file, write character variable new, simultaneously by character variable new assignment to character variable old, counter variable count is added to 1 automatically, then forward step S12 to;
S16, judge whether character variable new equals character variable old, if be not equal to, enter step S17, otherwise enter step S18;
S17, in compressed file, write counter variable count, and then write character variable new, character variable new assignment, to character variable old, is set to 1 by counter variable count simultaneously, then forward step S12 to;
S18, counter variable count is added to 1, if counter variable count equals 255, enter step S19, otherwise forward step S12 to;
S19, in compressed file, write counter variable count, then counter variable count is set to 0, then forward step S12 to;
S110, in compressed file, write counter variable count;
S111, close original image file and compressed file.
Preferably, the file of the specified format in described step S2 is the binary file of bin form.
Preferably, the decompression algorithm in described step S5 specifically comprises the following steps:
S51, open compressed file with read-only mode, definition character variable ch initial value assignment are 0, and in internal memory, apply for an internal memory, and the start address of this piece internal memory is logo_address;
S52, from compressed file, read in a character, leave in character variable ch;
S53, judge whether character variable ch equals end-of-file mark EOF, if so, goes to step S57, otherwise go to step S54;
S54, from compressed file, read in a character, leave in counter variable count_1;
S55, judge whether counter variable count_1 equals 0, if equal 0, go to step S52, otherwise go to step S56;
In S56, the memory block that is logo_address toward start address, write character variable ch, then the value of memory address logo_address adds 1 automatically, and counter variable count_1 subtracts 1 automatically, then skips to step S55;
S57, closes compression file.
Preferably, described intelligent mobile terminal comprises mobile phone, notebook computer, panel computer and palm equipment for surfing the net.
Another object of the present invention is achieved through the following technical solutions:
A device for encoding and decoding picture in intelligent mobile terminal LK, is applied in intelligent mobile terminal equipment, comprises lower array apparatus:
Original image compression set, this device uses all original images that need to show in starting-up interface of compression algorithm compression;
File encapsulation save set, this device, for the data structure that comprises compressed picture resolution and size information is saved, writes in the file of specified format together with the view data after the compression of original image compression set;
Subregion writing station, this device is for writing LOGO subregion by the file of specified format;
Document reading apparatus, in the process that this device starts at LK, reads the file of specified format in LOGO subregion;
Original image decompressing device, this device uses decompression algorithm, the original LOGO picture of decompress(ion);
Original image display device, this device is for showing the picture after decompress(ion) at starting-up interface.
Preferably, the original image in described original image compression set is the picture of raw form.
Preferably, in described original image compression set, specifically comprise again lower array apparatus:
Picture compression apparatus for initializing, this device is for opening the original image of the raw form that needs compression with read-only mode, definition counter variable count initial value assignment are 0, definition character variable old initial value assignment are 0, definition character variable new initial value assignment are 0, then create and open compressed file with read-write mode;
Original image document reading apparatus, this device, for reading a character from original image file, leaves in character variable new;
Original image end-of-file mark recognition device, this device is used for judging whether character variable new equals end-of-file mark EOF;
Counter variable count the first judgment means, this device is used for judging whether counter variable count equals 0;
Compressed file the first writing station, this device is for writing character variable new toward compressed file, simultaneously by character variable new assignment to character variable old, counter variable count is added to 1 automatically, then forward original image document reading apparatus to;
Character variable new judgment means, this device is used for judging whether character variable new equals character variable old;
Compressed file the second writing station, this device is for writing counter variable count toward compressed file, and then writes character variable new, by character variable new assignment to character variable old, counter variable count is set to 1 simultaneously, then forwards original image document reading apparatus to;
Counter variable count the second judgment means, this device, for counter variable count is added to 1, judges whether counter variable count equals 255, if judgement equals to enter compressed file the 3rd writing station, otherwise forwards original image document reading apparatus to;
Compressed file the 3rd writing station, this device, for writing counter variable count toward compressed file, is then set to 0 by counter variable count, then forwards original image document reading apparatus to;
Compressed file the 4th writing station, this device is for writing counter variable count toward compressed file;
Picture compression finishes device, and this device is used for closing original image file and compressed file.
Preferably, the file of the specified format in described file encapsulation save set is the binary file of bin form.
Preferably, in described original image decompressing device, specifically comprise lower array apparatus:
Picture decompression initialization device, this device is for opening compressed file with read-only mode, and definition character variable ch initial value assignment are 0, and in internal memory, apply for an internal memory, and the start address of this piece internal memory is logo_address;
Compressed file the first reading device, this device, for reading in a character from compressed file, leaves in character variable ch;
Compressed file end mark EOF recognition device, this device is used for identifying to judge whether character variable ch equals end-of-file mark EOF, if so, goes to compressed file stopping device, otherwise goes to compressed file the second reading device;
Compressed file the second reading device, this device, for reading in a character from compressed file, leaves in counter variable count_1;
Counter variable count_1 judgment means, this device is used for judging whether counter variable count_1 equals 0, if equal 0, goes to compressed file the first reading device, otherwise goes to internal memory writing station;
Internal memory writing station, this device writes character variable ch for the memory block that is logo_address toward start address, then the value of memory address logo_address adds 1 automatically, and counter variable count_1 subtracts 1 automatically, then skips to counter variable count_1 judgment means;
Compressed file stopping device, this device is for closes compression file.
Preferably, described intelligent mobile terminal comprises mobile phone, notebook computer, panel computer and palm equipment for surfing the net.
The present invention has following advantage and effect with respect to prior art:
1, the present invention, by the start logo picture approach of compressed and decompressed original RAW form, can overcome the restriction of LOGO subregion volume space significantly, saves disk space.
2, the method for encoding and decoding boot LOGO picture in LK disclosed by the invention, can also accelerate the demonstration of boot LOGO picture, promotes user and experiences.
Brief description of the drawings
Fig. 1 is the method flow diagram of encoding and decoding picture in a kind of intelligent mobile terminal LK in the present invention;
Fig. 2 is the flow chart of steps of compression algorithm in the present invention;
Fig. 3 is the flow chart of steps of decompression algorithm in the present invention.
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 to this.
Embodiment mono-
The present embodiment discloses the method for encoding and decoding picture in a kind of intelligent mobile terminal LK, by encoding and decoding boot LOGO picture this picture of decoding in LK, overcome the restriction of LOGO subregion volume space, saved disk space, the method is applied in intelligent mobile terminals such as comprising mobile phone, notebook computer, panel computer and palm equipment for surfing the net.
As shown in the method flow diagram of encoding and decoding picture in a kind of intelligent mobile terminal LK of the present invention in Fig. 1, the method concrete steps are as follows:
Step 1, compress all pictures that need to show in starting-up interface, compression algorithm is shown in Fig. 2.
[algorithm idea: the original image file original.raw that 1, first opens the raw picture format that needs compression.2, read the data of a byte, leave in character variable new, and it is deposited in compress.raw compressed file, to character variable old, be 1 counter variable count assignment character variable new value assignment simultaneously.3, read in next byte, leave in character variable new, if character variable new equals character variable old, just counter variable count is added to 1, if unequal, just counter variable count is written in compressed file compress.raw, and then character variable new is also written in compressed file compress.raw.Repeat, until the end of file so always.The content of compressed file is two tuples of (new, count) form.】
[explain: in an image file, it is all the same having a lot of continuous data, need to record like this value of first data and the number of data and just can reach the object of compression.For example { 255,255,255,255,255,255,110,110,110,210,210,210,210,210,210} can be compressed into it that { 255,6,110,3,210,6}, sequence originally takies 15 bytes, only accounts for 6 bytes after compression a sequence.
The first step: open the original image file original.raw of the Rraw picture format that needs compression in " read-only " mode, counter variable count is set to 0, character variable old assignment is 0, opens compressed file compress.raw in " read-write " mode;
Second step: read a character (run through rear file pointer and automatically add 1) from source file (original.raw file), leave in character variable new;
The 3rd step: if character variable new equals end-of-file mark EOF, turn the tenth step, otherwise enter the 4th step;
The 4th step: judge whether counter variable count equals 0, if equal 0, enter the 5th step, otherwise enter the 6th step;
The 5th step: in compressed file compress.raw file, write character variable new (write rear file pointer and automatically add 1), simultaneously by character variable new assignment to character variable old, counter variable count is set to 1, then forward second step to;
The 6th step: judge whether character variable new equals character variable old, if be not equal to, enter the 7th step, otherwise enter the 8th step;
The 7th step: write counter variable count (write rear file pointer and automatically add 1) in compressed file compress.raw, and then write character variable new (write rear file pointer and automatically add 1), by character variable new assignment to character variable old, counter variable count is set to 1 simultaneously, finally forwards second step to;
The 8th step: counter variable count is added to 1, if counter variable count equals 255, enter the 9th step, otherwise forward second step to;
The 9th step: write counter variable count (write rear file pointer and automatically add 1) in compressed file compress.raw file, then counter variable count is set to 0, finally forward second step to;
The tenth step: write counter variable count in compressed file compress.raw file;
The 11 step: close the raw image files original.raw and the compressed file compress.raw that open.】
Step 2, the data structure that comprises compressed picture resolution and size information is saved, together with the view data after compression in step 1, write together in LOGO.bin file.
Step 3, LOGO.bin file is write in LOGO subregion.
Step 4, LK start process in, read LOGO subregion.
Step 5, use decompression algorithm, decompress(ion) LOGO picture, decompression algorithm is shown in figure-2.
[algorithm idea: 1, read compressed file compress.raw.2, read in the data of a byte, its value is character variable ch.3, read in the data of next byte, its value is counter variable count.4, in the region of memory of specifying, write continuously count ch.5, repeat 2,3,4 steps, until the end of file.】
[explain: in conjunction with compression algorithm above, the algorithm of decompression is exactly an inverse process: first read first character variable ch, then read second counter variable count, that is to say that ch character has occurred count time.If the sequence after compression is that { 255,6,110,3,210,6} is exactly { 255,255,255,255,255,255,110,110,110,210,210,210,210,210,210} after decompressing so.
The first step: open compressed file compress.raw in " read-only " mode, apply for an internal memory in internal memory, start address is logo_address;
Second step: read in a character (run through rear file pointer and automatically add 1) from compressed file compress.raw, leave in character variable ch;
The 3rd step: judge whether character variable ch equals end-of-file mark EOF, if so, turn the 7th step, otherwise turn the 4th step;
The 4th step: read in a character (run through rear file pointer and automatically add 1) from compressed file compress.raw, leave in counter variable count;
The 5th step: judge whether counter variable count equals 0, if equal 0, turn second step, otherwise proceed to the 6th step;
The 6th step: write character variable ch (value that writes rear logo_address adds 1 automatically) in logo_address, counter variable count subtracts 1, then enters the 5th step;
The 7th step: finish, close the compressed file compress.raw opening.】
Step 6, in starting-up interface, show the picture after decompress(ion).
The present invention is by the picture of compression RAW form, and is kept in LOGO subregion, and in start, LK reads the image data compression from LOGO subregion, after decompression by LOGO Image Display in starting-up interface.After the compression method compression of this patent, can, the picture of 2560*1440 size, be compressed to 550K, and the picture size of former RAW form be 11M, ratio of compression is 20:1.
Embodiment bis-
The present embodiment discloses the device of encoding and decoding picture in a kind of intelligent mobile terminal LK, is applied in intelligent mobile terminal equipment, and described intelligent mobile terminal comprises mobile phone, notebook computer, panel computer and palm equipment for surfing the net, comprises lower array apparatus:
1, original image compression set, this device uses all original images that need to show in starting-up interface of compression algorithm compression, and wherein original image is the picture of raw form.
This device specifically comprises again lower array apparatus:
Picture compression apparatus for initializing, this device is for opening the original image of the raw form that needs compression with read-only mode, definition counter variable count initial value assignment are 0, definition character variable old initial value assignment are 0, definition character variable new initial value assignment are 0, then create and open compressed file with read-write mode;
Original image document reading apparatus, this device, for reading a character from original image file, leaves in character variable new;
Original image end-of-file mark recognition device, this device is used for judging whether character variable new equals end-of-file mark EOF;
Counter variable count the first judgment means, this device is used for judging whether counter variable count equals 0;
Compressed file the first writing station, this device is for writing character variable new toward compressed file, simultaneously by character variable new assignment to character variable old, counter variable count is added to 1 automatically, then forward original image document reading apparatus to;
Character variable new judgment means, this device is used for judging whether character variable new equals character variable old;
Compressed file the second writing station, this device is for writing counter variable count toward compressed file, and then writes character variable new, by character variable new assignment to character variable old, counter variable count is set to 1 simultaneously, then forwards original image document reading apparatus to;
Counter variable count the second judgment means, this device, for counter variable count is added to 1, judges whether counter variable count equals 255, if judgement equals to enter compressed file the 3rd writing station, reads dress otherwise forward original image file to;
Compressed file the 3rd writing station, this device, for writing counter variable count toward compressed file, is then set to 0 by counter variable count, then forwards original image document reading apparatus to;
Compressed file the 4th writing station, this device is for writing counter variable count toward compressed file;
Picture compression finishes device, and this device is used for closing original image file and compressed file.
2, file encapsulation save set, this device, for the data structure that comprises compressed picture resolution and size information is saved, writes in the file of specified format together with the view data after the compression of original image compression set; Wherein the file of specified format is the binary file of bin form.
3, subregion writing station, this device is for writing LOGO subregion by the file of specified format.
4, document reading apparatus, in the process that this device starts at LK, reads the file of specified format in LOGO subregion.
5, original image decompressing device, this device uses decompression algorithm, the original LOGO picture of decompress(ion).
This device specifically comprises again lower array apparatus:
Picture decompression initialization device, this device is for opening compressed file with read-only mode, and definition character variable ch initial value assignment are 0, and in internal memory, apply for an internal memory, and the start address of this piece internal memory is logo_address;
Compressed file the first reading device, this device, for reading in a character from compressed file, leaves in character variable ch;
Compressed file end mark EOF recognition device, this device is used for identifying to judge whether character variable ch equals end-of-file mark EOF, if so, goes to compressed file stopping device, otherwise goes to compressed file the second reading device;
Compressed file the second reading device, this device, for reading in a character from compressed file, leaves in counter variable count_1;
Counter variable count_1 judgment means, this device is used for judging whether counter variable count_1 equals 0, if equal 0, goes to compressed file the first reading device, otherwise goes to internal memory writing station;
Internal memory writing station, this device writes character variable ch for the memory block that is logo_address toward start address, then the value of memory address logo_address adds 1 automatically, and counter variable count_1 subtracts 1 automatically, then skips to counter variable count_1 judgment means;
Compressed file stopping device, this device is for closes compression file.
6, original image display device, this device is for showing the picture after decompress(ion) at starting-up interface.
It should be noted that in said apparatus embodiment, included modules and unit are just divided according to function logic, but are not limited to above-mentioned division, as long as can realize corresponding function; In addition, the concrete title of each functional module and unit also, just for the ease of mutual differentiation, is not limited to protection scope of the present invention.
Above-described embodiment is preferably embodiment of the present invention; but embodiments of the present invention are not restricted to the described embodiments; other any do not deviate from change, the modification done under Spirit Essence of the present invention and principle, substitutes, combination, simplify; all should be equivalent substitute mode, within being included in protection scope of the present invention.
Claims (12)
1. a method for encoding and decoding picture in intelligent mobile terminal LK, is applied in intelligent mobile terminal equipment, it is characterized in that, comprises the following steps:
S1, all original images that need to show in starting-up interface of use compression algorithm compression;
S2, the data structure that comprises compressed picture resolution and size information is saved, write in the file of specified format together with the view data after compression in step S1;
S3, the file of specified format is write in LOGO subregion;
In S4, the process that starts at LK, read the file of specified format in LOGO subregion;
S5, use decompression algorithm, decompress(ion) LOGO picture;
S6, in starting-up interface, show the picture after decompress(ion).
2. the method for coding and decoding picture in a kind of intelligent mobile terminal LK according to claim 1, is characterized in that: the original image in described step S1 is the picture of raw form.
3. the method for coding and decoding picture in a kind of intelligent mobile terminal LK according to claim 2, is characterized in that, the compression algorithm in described step S1 specifically comprises the following steps:
S11, open the original image of raw form that needs compression with read-only mode, definition counter variable count initial value assignment are 0, definition character variable old initial value assignment are 0, and definition character variable new initial value assignment are 0, then create and open compressed file with read-write mode;
S12, from original image file, read a character, leave in character variable new;
If S13 character variable new equals end-of-file mark EOF, go to step S110, otherwise enter step S14;
S14, judge whether counter variable count equals 0, if equal 0, enter step S15, otherwise enter step S16;
S15, in compressed file, write character variable new, simultaneously by character variable new assignment to character variable old, counter variable count is added to 1 automatically, then forward step S12 to;
S16, judge whether character variable new equals character variable old, if be not equal to, enter step S17, otherwise enter step S18;
S17, in compressed file, write counter variable count, and then write character variable new, character variable new assignment, to character variable old, is set to 1 by counter variable count simultaneously, then forward step S12 to;
S18, counter variable count is added to 1, if counter variable count equals 255, enter step S19, otherwise forward step S12 to;
S19, in compressed file, write counter variable count, then counter variable count is set to 0, then forward step S12 to;
S110, in compressed file, write counter variable count;
S111, close original image file and compressed file.
4. the method for coding and decoding picture in a kind of intelligent mobile terminal LK according to claim 1, is characterized in that: the file of the specified format in described step S2 is the binary file of bin form.
5. the method for coding and decoding picture in a kind of intelligent mobile terminal LK according to claim 1, is characterized in that, the decompression algorithm in described step S5 specifically comprises the following steps:
S51, open compressed file with read-only mode, definition character variable ch initial value assignment are 0, and in internal memory, apply for an internal memory, and the start address of this piece internal memory is logo_address;
S52, from compressed file, read in a character, leave in character variable ch;
S53, judge whether character variable ch equals end-of-file mark EOF, if so, goes to step S57, otherwise go to step S54;
S54, from compressed file, read in a character, leave in counter variable count_1;
S55, judge whether counter variable count_1 equals 0, if equal 0, go to step S52, otherwise go to step S56;
In S56, the memory block that is logo_address toward start address, write character variable ch, then the value of memory address logo_address adds 1 automatically, and counter variable count_1 subtracts 1 automatically, then skips to step S55;
S57, closes compression file.
6. according to the method for coding and decoding picture in the arbitrary described a kind of intelligent mobile terminal LK of claim 1 to 5, it is characterized in that: described intelligent mobile terminal comprises mobile phone, notebook computer, panel computer and palm equipment for surfing the net.
7. a device for encoding and decoding picture in intelligent mobile terminal LK, is applied in intelligent mobile terminal equipment, it is characterized in that, comprises lower array apparatus:
Original image compression set, this device uses all original images that need to show in starting-up interface of compression algorithm compression;
File encapsulation save set, this device, for the data structure that comprises compressed picture resolution and size information is saved, writes in the file of specified format together with the view data after the compression of original image compression set;
Subregion writing station, this device is for writing LOGO subregion by the file of specified format;
Document reading apparatus, in the process that this device starts at LK, reads the file of specified format in LOGO subregion;
Original image decompressing device, this device uses decompression algorithm, the original LOGO picture of decompress(ion);
Original image display device, this device is for showing the picture after decompress(ion) at starting-up interface.
8. the device of coding and decoding picture in a kind of intelligent mobile terminal LK according to claim 7, is characterized in that: the original image in described original image compression set is the picture of raw form.
9. the device of coding and decoding picture in a kind of intelligent mobile terminal LK according to claim 8, is characterized in that, specifically comprises again lower array apparatus in described original image compression set:
Picture compression apparatus for initializing, this device is for opening the original image of the raw form that needs compression with read-only mode, definition counter variable count initial value assignment are 0, definition character variable old initial value assignment are 0, definition character variable new initial value assignment are 0, then create and open compressed file with read-write mode;
Original image document reading apparatus, this device, for reading a character from original image file, leaves in character variable new;
Original image end-of-file mark recognition device, this device is used for judging whether character variable new equals end-of-file mark EOF;
Counter variable count the first judgment means, this device is used for judging whether counter variable count equals 0;
Compressed file the first writing station, this device is for writing character variable new toward compressed file, simultaneously by character variable new assignment to character variable old, counter variable count is added to 1 automatically, then forward original image document reading apparatus to;
Character variable new judgment means, this device is used for judging whether character variable new equals character variable old;
Compressed file the second writing station, this device is for writing counter variable count toward compressed file, and then writes character variable new, by character variable new assignment to character variable old, counter variable count is set to 1 simultaneously, then forwards original image document reading apparatus to;
Counter variable count the second judgment means, this device, for counter variable count is added to 1, judges whether counter variable count equals 255, if judgement equals to enter compressed file the 3rd writing station, otherwise forwards original image document reading apparatus to;
Compressed file the 3rd writing station, this device, for writing counter variable count toward compressed file, is then set to 0 by counter variable count, then forwards original image document reading apparatus to;
Compressed file the 4th writing station, this device is for writing counter variable count toward compressed file;
Picture compression finishes device, and this device is used for closing original image file and compressed file.
10. the device of coding and decoding picture in a kind of intelligent mobile terminal LK according to claim 7, is characterized in that: the file of the specified format in described file encapsulation save set is the binary file of bin form.
In 11. a kind of intelligent mobile terminal LK according to claim 7, the device of coding and decoding picture, is characterized in that, specifically comprises lower array apparatus in described original image decompressing device:
Picture decompression initialization device, this device is for opening compressed file with read-only mode, and definition character variable ch initial value assignment are 0, and in internal memory, apply for an internal memory, and the start address of this piece internal memory is logo_address;
Compressed file the first reading device, this device, for reading in a character from compressed file, leaves in character variable ch;
Compressed file end mark EOF recognition device, this device is used for identifying to judge whether character variable ch equals end-of-file mark EOF, if so, goes to compressed file stopping device, otherwise goes to compressed file the second reading device;
Compressed file the second reading device, this device, for reading in a character from compressed file, leaves in counter variable count_1;
Counter variable count_1 judgment means, this device is used for judging whether counter variable count_1 equals 0, if equal 0, goes to compressed file the first reading device, otherwise goes to internal memory writing station;
Internal memory writing station, this device writes character variable ch for the memory block that is logo_address toward start address, then the value of memory address logo_address adds 1 automatically, and counter variable count_1 subtracts 1 automatically, then skips to counter variable count_1 judgment means;
Compressed file stopping device, this device is for closes compression file.
12. according to the device of coding and decoding picture in the arbitrary described a kind of intelligent mobile terminal LK of claim 7 to 11, it is characterized in that: described intelligent mobile terminal comprises mobile phone, notebook computer, panel computer and palm equipment for surfing the net.
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