CN103530353A - Self-identification method of GPS user data format - Google Patents
Self-identification method of GPS user data format Download PDFInfo
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- CN103530353A CN103530353A CN201310470360.3A CN201310470360A CN103530353A CN 103530353 A CN103530353 A CN 103530353A CN 201310470360 A CN201310470360 A CN 201310470360A CN 103530353 A CN103530353 A CN 103530353A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
- G01C21/26—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
- G06F16/22—Indexing; Data structures therefor; Storage structures
- G06F16/2282—Tablespace storage structures; Management thereof
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
- G06F16/23—Updating
- G06F16/2365—Ensuring data consistency and integrity
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Abstract
The invention relates to a self-identification method of a GPS user data format. In order to achieve the data integrity and consistency aims, an embedded database will be adopted in a GPS to store user data; in order to generate and analyze a user data structure, a data format description method is adopted, and the self-identification method is based on the fact that the user data format can be organized according to the certain format to enable a machine to easily analyze and generate the user data structure; the user data format is organized according to the characteristics of the user data structure, format information is described, and then data compatibility checking on data is carried out. The self-identification method has the advantages that the data added and changed by a user in an old GPS version are effectively retained, the already retained old user data can also be used in updated or refreshed GPS software, and various functions of the GPS are not influenced. The GPS software is intelligent and user-friendly, and the shortcoming of user data losses on the user when the GPS is refreshed and upgraded is overcome.
Description
Technical field
The present invention relates to vehicle mounted guidance field, particularly a kind of self-identifying method of navigation user data layout.
Background technology
Along with the progressively raising of car owning amount, by impelling, the use of vehicle mounted guidance is also more and more universal.So also have increasing user, will rely on the various storage of subscriber data functions that navigation provides, and along with the renewal of navigation product is upgraded, user is stored in a large amount of in old navigation, important, user data can not be lost, also have the memory function that a lot of customer requirements navigation products provide more detailed user profile, this also makes in navigation the structure of the user data of storage become to become increasingly complex, how to address these problems and will become more complicated simultaneously.
User data, from navigation software, refer to the information that user oneself can manually store or revise on navigation software, for example, address book, the attribute information that can change on display module in electronic eyes and some navigation etc., these information can be according to user's self needs, storage that can be random and change.
Upgrading and the renewal of navigation, refer to another new navigation through the transformation of itself or optimization are generated based on a basic navigation product, and this transformation and optimization comprise to be increased the information of user data according to user's demand or deletion etc.When navigation is upgraded and upgrade, the user data that user is stored in old navigation is preserved, and has fully met user's needs, and this also makes navigation product have extreme high reliability, maintainability, ease for use and security.Help user to solve old user data loss after user upgrades and upgrades, the worries of a large amount of user data of having stored before need to re-entering.
Summary of the invention
The object of the invention is in order to solve the problem of user data loss when navigation product upgrades upgrading, spy provides a kind of self-identifying method of navigation user data layout.
A kind of self-identifying method that the invention provides navigation user data layout, is characterized in that: the self-identifying method of described navigation user data layout, and the module when using navigation product to carry out the storage of user data is mutual, as Fig. 1;
The ingredient of whole navigational system main modular used when carrying out user's storage, comprises navigational system, memory module and user data module;
Navigational system, when carrying out the storage of user data, navigational system is responsible for and user carries out alternately, user is thought to the work of doing, by navigational system, identify, for example, if user wants to read user data, still will store user data, be all to change into by navigational system the instruction that memory module can be identified, go to operate.Then the user who the net result of operation is just informed in operated navigation systems, user just knows whether correct completing of operation just now.
Memory module, is to react after the instruction that receives navigational system, carries out the storage of data, read and resolve, the concrete module of memory module as shown in Figure 2,
Instruction resolution unit, the instruction of being sent to memory module by navigational system all will be through the parsing of instruction resolution unit, and after resolving, memory module just can know that navigational system needs memory module to carry out what operation, is store data or read and write data.
Format analysis unit, after the instruction of the instruction resolution unit through instruction resolution unit is resolved, related data and command information, pass to format analysis unit, format analysis unit will be known so, which type of form to remove reading out data or data writing with.
I/O read-write cell, carry out the module of the read-write capability of data, after above two modules, the data that system will write needs are delivered to this module, I/O read-write cell will write according to format analysis unit resolves form out, if reading out data also can read according to the form of resolving.
Navigational system is the user data of identification different-format, and these data can be converted into own operable data, and data can loss method not be again simultaneously:
In order to solve the complete consistency problem of data; navigation will adopt embedded database to carry out the storage to user data; embedded data belongs to the database of lightweight, is characterized in taking storage medium space less, for embedded device; travelling speed is fast; effect is better, and the most important is database, has transaction protection mechanism, can carry out effective transaction protection to database; and can obliterated data, the security that has improved data.Carrying out a large amount of data, to carry out database write fashionable; optimal mode is before writing, to carry out transaction protection; then carry out writing of mass data; after writing, carrying out artificial affairs finishes; being written in database a large amount of data securities just; if there is write error midway, just carry out the rolling back action of affairs, can guarantee the security of the data of operation before writing.
For to the generation of user data structure and parsing, adopt a kind of data format descriptor method, the form of user data can be organized according to certain form based on a kind of, so that when carrying out reading out data or data writing, according to this, through the form of organizing, store and format analysis, be easy to machine and resolve and generate, and can judge according to the formatted data through organizing which the form of user data has change, thereby data are changed.
The structure of a user data has a plurality of members to form, and each member has oneself title, type, and size, according to as above feature, concludes and unifies.
The structural information of a user data is as shown in the table:
| Member 1 | Name variable | Types of variables | Array size | Nested structure | Father's type structure |
| Member 2 | Name variable | Types of variables | Array size | Nested structure | Father's type structure |
| Member 3 | Name variable | Types of variables | Array size | Nested structure | Father's type structure |
| … | … | … | … | … | … |
To organizing of data layout, it is also the feature according to user data structure, carry out format information to be described, for example, for member 1, the member's 1 of current definition format information, this form type just can be identified member used in the navigational system making new advances 1 types of variables after organizing through format description technology, whether the information such as array size change, if changed, just carry out the conversion of data compatibility, otherwise directly use.
Had after above two methods that put the axe in the helve, we just can carry out the compliance check of data.
Scheme one: the flow process of compliance check as shown in Figure 3;
User carries out operated navigation systems as required, for example add data, Update Table or deletion data, navigational system can needing obtaining information and information passed to command unit by user, information passes to after command unit, these information are processed and are processed at command unit, form the instruction that navigation memory module can be identified, entering into after format analysis module format analysis module takes user data according to instruction set notice I/O read-write cell and goes to read and write data, when the data that read are delivered to behind format analysis unit by I/O read-write cell, format analysis unit starts the form of resolution data, if the data layout at this moment transmitting is identical with the form of the user data of the current navigational system in format analysis, data are direct, upwards transmit, until inform user, if format analysis unit inspection is different with the format of user data of current navigational system to the form of user data, the renewal of advanced row data, then feeding back to user.If data writing, when data are delivered to format analysis unit, data will be according to, and in format analysis unit, the form of the user data of current navigational system carries out the storage of data.
Scheme two: Fig. 4 compliance check process flow diagram;
Different with the method for scheme one is to be different on the opportunity of carrying out Data Update, as Fig. 4, in the process starting in navigational system, automatically detect in user data whether have data, if not, the renewal of can not upgrading, if there are data, by I/O read-write cell, all user data are all read to Data Analysis unit, then according to the form of the current user data in resolution unit, carry out the parsing of format of user data and the renewal of data, after waiting for that all data have all been upgraded, by I/O read-write cell, write back in user data again, then navigational system starts complete, user can normally read and write or user's data, need not all check at every turn.
Advantage of the present invention:
The self-identifying method of navigation user data layout of the present invention, a kind of innovative approach that the user data based on tradition navigation upgrading or after upgrading can not be retained and use.Effectively retained the data that user added and changed in old navigation version, make upgrading or upgrade after navigation software can use equally the old user data having retained and not affect the various functions of navigation itself.This makes modern navigation software more intelligent, hommization more, the deficiency of the user data loss that having made up navigates causes to user when updating.
Accompanying drawing explanation
Below in conjunction with drawings and the embodiments, the present invention is further detailed explanation:
Module interaction figure when Fig. 1 is navigation product storage user data;
Fig. 2 is memory module configuration figure;
Fig. 3 is compliance check process flow diagram (scheme 1);
Fig. 4 is compliance check process flow diagram (scheme 2).
Embodiment
Embodiment 1
The present embodiment provides a kind of self-identifying method of navigation user data layout, it is characterized in that: the self-identifying method of described navigation user data layout, and the module when using navigation product to carry out the storage of user data is mutual, as Fig. 1;
The ingredient of whole navigational system main modular used when carrying out user's storage, comprises navigational system, memory module and user data module;
Navigational system, when carrying out the storage of user data, navigational system is responsible for and user carries out alternately, user is thought to the work of doing, by navigational system, identify, for example, if user wants to read user data, still will store user data, be all to change into by navigational system the instruction that memory module can be identified, go to operate.Then the user who the net result of operation is just informed in operated navigation systems, user just knows whether correct completing of operation just now.
Memory module, is to react after the instruction that receives navigational system, carries out the storage of data, read and resolve, the concrete module of memory module as shown in Figure 2,
Instruction resolution unit, the instruction of being sent to memory module by navigational system all will be through the parsing of instruction resolution unit, and after resolving, memory module just can know that navigational system needs memory module to carry out what operation, is store data or read and write data.
Format analysis unit, after the instruction of the instruction resolution unit through instruction resolution unit is resolved, related data and command information, pass to format analysis unit, format analysis unit will be known so, which type of form to remove reading out data or data writing with.
I/O read-write cell, carry out the module of the read-write capability of data, after above two modules, the data that system will write needs are delivered to this module, I/O read-write cell will write according to format analysis unit resolves form out, if reading out data also can read according to the form of resolving.
Navigational system is the user data of identification different-format, and these data can be converted into own operable data, and data can loss method not be again simultaneously:
In order to solve the complete consistency problem of data; navigation will adopt embedded database to carry out the storage to user data; embedded data belongs to the database of lightweight, is characterized in taking storage medium space less, for embedded device; travelling speed is fast; effect is better, and the most important is database, has transaction protection mechanism, can carry out effective transaction protection to database; and can obliterated data, the security that has improved data.Carrying out a large amount of data, to carry out database write fashionable; optimal mode is before writing, to carry out transaction protection; then carry out writing of mass data; after writing, carrying out artificial affairs finishes; being written in database a large amount of data securities just; if there is write error midway, just carry out the rolling back action of affairs, can guarantee the security of the data of operation before writing.
For to the generation of user data structure and parsing, adopt a kind of data format descriptor method, the form of user data can be organized according to certain form based on a kind of, so that when carrying out reading out data or data writing, according to this, through the form of organizing, store and format analysis, be easy to machine and resolve and generate, and can judge according to the formatted data through organizing which the form of user data has change, thereby data are changed.
The structure of a user data has a plurality of members to form, and each member has oneself title, type, and size, according to as above feature, concludes and unifies.
The structural information of a user data is as shown in the table:
| Member 1 | Name variable | Types of variables | Array size | Nested structure | Father's type structure |
| Member 2 | Name variable | Types of variables | Array size | Nested structure | Father's type structure |
| Member 3 | Name variable | Types of variables | Array size | Nested structure | Father's type structure |
| … | … | … | … | … | … |
To organizing of data layout, it is also the feature according to user data structure, carry out format information to be described, for example, for member 1, the member's 1 of current definition format information, this form type just can be identified member used in the navigational system making new advances 1 types of variables after organizing through format description technology, whether the information such as array size change, if changed, just carry out the conversion of data compatibility, otherwise directly use.
Had after above two methods that put the axe in the helve, we just can carry out the compliance check of data.
Scheme one: the flow process of compliance check as shown in Figure 3;
User carries out operated navigation systems as required, for example add data, Update Table or deletion data, navigational system can needing obtaining information and information passed to command unit by user, information passes to after command unit, these information are processed and are processed at command unit, form the instruction that navigation memory module can be identified, entering into after format analysis module format analysis module takes user data according to instruction set notice I/O read-write cell and goes to read and write data, when the data that read are delivered to behind format analysis unit by I/O read-write cell, format analysis unit starts the form of resolution data, if the data layout at this moment transmitting is identical with the form of the user data of the current navigational system in format analysis, data are direct, upwards transmit, until inform user, if format analysis unit inspection is different with the format of user data of current navigational system to the form of user data, the renewal of advanced row data, then feeding back to user.If data writing, when data are delivered to format analysis unit, data will be according to, and in format analysis unit, the form of the user data of current navigational system carries out the storage of data.
Embodiment 2
The difference part of embodiment the present embodiment and embodiment 1 is, as Fig. 4 compliance check process flow diagram;
Different with the method for scheme one is to be different on the opportunity of carrying out Data Update, as Fig. 4, in the process starting in navigational system, automatically detect in user data whether have data, if not, the renewal of can not upgrading, if there are data, by I/O read-write cell, all user data are all read to Data Analysis unit, then according to the form of the current user data in resolution unit, carry out the parsing of format of user data and the renewal of data, after waiting for that all data have all been upgraded, by I/O read-write cell, write back in user data again, then navigational system starts complete, user can normally read and write or user's data, need not all check at every turn.
Claims (3)
1. a self-identifying method for navigation user data layout, is characterized in that: the self-identifying method of described navigation user data layout, and the module when using navigation product to carry out the storage of user data is mutual;
The ingredient of whole navigational system main modular used when carrying out user's storage, comprises navigational system, memory module and user data module;
Navigational system, when carrying out the storage of user data, navigational system is responsible for and user carries out alternately, user is thought to the work of doing, by navigational system, identify, if user wants to read user data, still will store user data, be to change into by navigational system the instruction that memory module can be identified, and goes to operate; Then the user who the net result of operation is just informed in operated navigation systems, user just knows whether correct completing of operation just now;
Memory module is reacted after the instruction that receives navigational system, carries out the storage of data, reads and resolves;
Instruction resolution unit, the instruction of being sent to memory module by navigational system all will be through the parsing of instruction resolution unit, and after resolving, memory module just can know that navigational system needs memory module to carry out what operation, is store data or read and write data;
Format analysis unit, after the instruction of the instruction resolution unit through instruction resolution unit is resolved, related data and command information, pass to format analysis unit, format analysis unit will be known so, which type of form to remove reading out data or data writing with;
I/O read-write cell, carry out the module of the read-write capability of data, after above two modules, the data that system will write needs are delivered to this module, I/O read-write cell will write according to format analysis unit resolves form out, if reading out data also can read according to the form of resolving;
Navigational system is the user data of identification different-format, and these data are converted into own operable data, and data can loss method not be again simultaneously:
In order to solve the complete consistency problem of data, navigation will adopt embedded database to carry out the storage to user data, embedded data belongs to the database of lightweight, is characterized in taking storage medium space less, for embedded device, travelling speed is fast, effect is better, and the most important is database, has transaction protection mechanism, can carry out effective transaction protection to database, and can obliterated data, the security that has improved data; Carrying out a large amount of data, to carry out database write fashionable, optimal mode is before writing, to carry out transaction protection, then carry out writing of mass data, after writing, carrying out artificial affairs finishes, being written in database a large amount of data securities just, if there is write error midway, just carry out the rolling back action of affairs, can guarantee the security of the data of operation before writing;
For to the generation of user data structure and parsing, adopt data format descriptor method, the form of user data can be organized according to certain form based on a kind of, so that when carrying out reading out data or data writing, according to this, through the form of organizing, store and format analysis, be easy to machine and resolve and generate, and can judge according to the formatted data through organizing which the form of user data has change, thereby data are changed;
The structure of a user data has a plurality of members to form, and each member has oneself title, type, and size, according to as above feature, concludes and unifies;
To organizing of data layout, be also the feature according to user data structure, carry out format information to be described; Had after above two methods that put the axe in the helve, can carry out the compliance check of data.
2. according to the self-identifying method of navigation user data layout claimed in claim 1, it is characterized in that: described compliance check scheme one: user carries out operated navigation systems as required, for example add data, Update Table or deletion data, navigational system can needing obtaining information and information passed to command unit by user, information passes to after command unit, these information are processed and are processed at command unit, form the instruction that navigation memory module can be identified, enter into after format analysis module, format analysis module is taken in user data and is gone to read and write data according to instruction set notice I/O read-write cell, when the data that read are delivered to behind format analysis unit by I/O read-write cell, format analysis unit starts the form of resolution data, if the data layout at this moment transmitting is identical with the form of the user data of the current navigational system in format analysis, data are direct, upwards transmit, until inform user, if format analysis unit inspection is different with the format of user data of current navigational system to the form of user data, the renewal of advanced row data, then feeding back to user, if data writing, when data are delivered to format analysis unit, data will be according to, and in format analysis unit, the form of the user data of current navigational system carries out the storage of data.
3. according to the self-identifying method of navigation user data layout claimed in claim 1, it is characterized in that: described compliance check scheme two: on the opportunity of carrying out Data Update, be different, in the process starting in navigational system, automatically detect in user data whether have data, if not, the renewal of can not upgrading, if there are data, by I/O read-write cell, all user data are all read to Data Analysis unit, then according to the form of the current user data in resolution unit, carry out the parsing of format of user data and the renewal of data, after waiting for that all data have all been upgraded, by I/O read-write cell, write back in user data again, then navigational system starts complete, user can normally read and write or user's data, need not all check at every turn.
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