CN101826929B - Data compression method of mobile multimedia broadcasting - Google Patents
Data compression method of mobile multimedia broadcasting Download PDFInfo
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Abstract
The invention relates to a compression method of mobile multimedia broadcasting data, and the data is related to financial business information, wherein the compression method comprises the following steps: forming a data set head, wherein the data set head comprises a data broadcasting extended business synchronous character in a 8-bit field, and identifying the start byte of an extended data business data packet head; identifying the data payload length in a 10-bit field by taking a byte as a unit; indicating the used encryption type in a 2-bit field of the data payload; a compression type in a 2-bit field, indicating the used compression encoding type of the data payload; indicating the used checking type in a 2-bit field of the data payload; marking an extended data business type in a8-bit field, and indicating the code of the business type indicated by a current data set; reserving a 8-bit field; checking character in a 16-bit field, indicating the processing for the 16-bit checking character generated through the computation for the data payload according to a certain checking algorithm; and forming a data set payload of data set, wherein the data set payload is in a 8N-bit field.
Description
Technical field
The present invention relates to China mobile multi-media broadcasting technology, relate in particular to the data compression method of Mobile Multimedia Broadcasting.
Background technology
Mobile Multimedia Broadcasting Financial Information business can provide real-time Financial Information service for the terminal use, the relevant information that comprises each trade variety of all kinds of financial markets such as security, futures, foreign exchange is such as real time price, historical data, basic side data, Notices ﹠ Information, stock comment information etc.
Summary of the invention
A kind of compression method of mobile multi-media broadcasting data, it is characterized in that, described data are relevant with financial business information, wherein, this compression method comprises: form data group head, data group head comprises the data broadcast synchronization character of activating business, 8 bit fields, the start byte of sign extended data services data packet head; Payload user data length, 10 bit fields, the length of identification data payload is take byte as unit; Encryption type, 2 bit fields, the encryption type that the expression payload user data uses; Compression type, 2 bit fields, the compressed encoding type that the expression payload user data uses; The verification type, 2 bit fields, the verification type that expression is used the data payload; The extended data services type identification, 8 bit fields, the coding of the type of service that expression current data group is represented; Keep, 8 bit fields keep; Check word, 16 bit fields, expression is calculated the 16 bit check word processings that produce to the data payload according to certain checking algorithm; And form data group payload user data, and data group payload is the 8N bit field, wherein N is integer.
Description of drawings
Fig. 1 is business structure and the flow process of Mobile Multimedia Broadcasting Financial Information business.
Fig. 2 is the data group of Financial Information business and data broadcast encapsulation and multiplexing relation.
Fig. 3 is classification and the relation of financial business bag data.
Fig. 4 is financial business packet encoder structure.
Fig. 5 is the relation of financial business bag and data group.
Fig. 6 is the encapsulating structure of data group.
Embodiment
Clause in the following files is quoted in this application.For the reference document of marked with date, its subsequently all modification single (not comprising the content of correcting errors in printing) or revised edition all are not suitable for quoting of the application.
GB/T 2659 countries in the world and regional name code
The code of GB/T 12406 expression currency and fund
GY/T 220.1-2006 Mobile Multimedia Broadcasting part 1: broadcast channel frame structure, Channel Coding and Modulation
GY/T 220.2-2006 Mobile Multimedia Broadcasting part 2: multiplexing
GY/T 220.3-2007 Mobile Multimedia Broadcasting the 3rd part: electron service instruction
GY/T 220.5-2008 Mobile Multimedia Broadcasting the 5th part: data broadcast
Term, definition, abbreviation and agreement
Following term and definition are applicable to the application:
Market: refering in particular to a financial transaction market, both can be in esse exchange, also can be a virtual class market of system definition.
Kind: refering in particular to financial transaction commodity, can be the financial products such as in esse marketable securities, futures, foreign exchange both, also can be a virtual goods of system definition.
Market: a group data set closes, and represents the market price of one or more kinds, trading volume, the integrated information that dealing money etc. form.
The financial business bag: the grouped data bag that operation system produces the Financial Information coding, a financial business bag only comprises a kind of identical data message type.
The data group: the minimum transmission units of Financial Information business, the payload user data part of a data group is only carried a financial business bag.
Following abbreviation is applicable to the application:
CA(Conditional Access) conditional access
CMMB(China Mobile Multimedia Broadcasting) China Mobile multimedia broadcasting
CRC(Cyclic Redundancy Check) cyclic redundancy check (CRC)
LSB(Least Significant Bit) least significant bit
ServiceID(Service Identifier) service identification
UTC(Universal Time, Co-ordinated) UTC Universal Time Coordinated
Bslbf(bit string, left bit first Bit String) left bit first
Uimsbf(unsigned integer, most string bit first) signless integer, uimsbf unsigned integer most significant bit first
Following agreement is applicable to this standard.
Version number: be used for the version of this standard of sign, with the compatibility identification of back-up system.Current version number is 1, and later release number increases progressively.
Keep: as do not add specified otherwise, the position of withing a hook at the end of the institute in this standard should be set to ' 1 '.
Relational operator:
＜less than
Greater than
==equal
Unequal to is not equal to
Arithmetic operator:
++ increase progressively and add 1
Assignment operator:
=assign operation
Mobile Multimedia Broadcasting Financial Information business can provide real-time Financial Information service for the terminal use, the relevant information that comprises each trade variety of all kinds of financial markets such as security, futures, foreign exchange is such as real time price, historical data, basic side data, Notices ﹠ Information, stock comment information etc.
The Financial Information business is an extended data services of mobile media broadcasting network, gather the data message of each trade market by front end service system, according to the processing of classifying of certain service logic, and then according to unified rule to the grouped data compressed encoding, send to the transmission of front end data broadcasting packaging machine.Business structure and flow process are seen Fig. 1, and this part is not the content that the present invention pays close attention to, and do not carry out detailed discussion at this.
The Financial Information business adopts independently that multiplexed sub frame transmits, and each Financial Information business packet is packaged into independently data group, by the units of data carry of multiplexed sub frame.These data groups are to transmit with stream mode, and the transmission of stream mode and method of reseptance are referring to " GY/T 220.2-2006 Mobile Multimedia Broadcasting the 5th part: data broadcast ".
The data group of Financial Information business and data broadcast encapsulation and multiplexing relation such as Fig. 2, similarly, this part is not the content that the present invention pays close attention to, and does not carry out detailed discussion at this.
The classification of data and encapsulation
Data classification: the Financial Information that Mobile Multimedia Broadcasting provides is professional, can comprise the information data of the trade markets such as security, futures, foreign exchange.The concrete data source form in each class market is had nothing in common with each other, and operation system is to the source data processing of classifying, and encodes with unified mode and compresses, and generates concrete financial business bag.
The financial business bag can be divided into the types such as trade market data, trade variety data, file information data, and classification and the relation of data are seen Fig. 3.
The trade market data: the trade market data description macroscopic information of a trade market, comprise the market master data, market expansion data etc.The variation frequency of trade market data is lower, substantially remains unchanged in certain trading time period.
The trade variety data: the trade variety data description each trade market concrete kind information of participating in business, comprise kind master data, kind growth data, market master data, historical data, covering data, by a data etc.
Relate to the trade variety data herein and carry out classified description as the basis take the stock information of securities market, other markets such as the information such as foreign exchange, futures can be the template processing of classifying by stock information also.
The trade variety data are key datas of whole Financial Information business, and its transmission requirement of real-time is also higher.
File information data: file information data description the files classes data messages, comprise market notice information file, Domestic News file, stock comment file, the basic side information paper of trade variety, and other third party's customizing messages files etc.
The requirement of real-time of file information transfer of data is relatively low.
Data encapsulation: operation system is encoded into a financial business bag with the Financial Information of the same type of one or more kinds.Each financial business bag keeps relative independence and complete.The coding structure of operation system such as Fig. 4.
Financial business is coated to be packaged into the data group and to transmit adaptively, and the payload user data of each data group i.e. a financial business bag independently.The data group is the smallest transmission unit of Financial Information business.The relation of financial business bag and data group is seen Fig. 5.
The definition of data group:
The data group is made of data group head, data group payload.The encapsulating structure of data group is seen Fig. 6.
Data group syntactic definition sees Table 1.
Table 1 data group syntactic definition
The data broadcast synchronization character of activating business
8 bit fields, the start byte of sign extended data services data packet head, value is fixed as 0x64.
Payload user data length
10 bit fields, the length of identification data payload is take byte as unit.
Encryption type
2 bit fields, the encryption type that the expression payload user data uses, the encryption type definition sees Table 2.
Table 2 scrambled type
Undefined concrete cryptographic algorithm can be used the self-defining cryptographic algorithm of concrete manufacturer at present.
Compression type
2 bit fields, the compressed encoding type that the expression payload user data uses, the compression type definition sees Table 3.
Table 3 compressed encoding type
The verification type
2 bit fields, the verification type that expression is used the data payload, the verification type definition sees Table 4.
Table 4 check code type
Wherein invalid check code represents that the check word in the data packet head is invalid, can ignore in the time of decoding terminals the verification of data payload is judged.
The extended data services type identification
8 bit fields, the coding of the type of service that expression current data group is represented.The type identification of Financial Information business is fixed as 0x01;
Keep
8 bit fields keep.
Check word
16 bit fields, expression is calculated the 16 bit check words that produce to the data payload according to certain checking algorithm.Concrete checking algorithm is indicated according to the verification type field of front, and when verification type bit 0, the data of this field are invalid, can ignore processing during decoding terminals.
Data group integrality
The integrality of data guarantees by the checking to data group payload user data length and check word.
Payload user data length field with 10 bits in data group head represents, the length of entrained business information payload in its numeric representation data group, be specially after the data group head first byte to next data group data broadcast synchronization character all data before of activating business, take byte as unit.
Check word is positioned at two bytes of most end of data group head, is according to the checking algorithm of data group header check type field indication, and the content of data payload is carried out the result that correlation computations obtains.The calculating of check word is being carried out to the compression of data payload or after encrypting.
Data compression
The narrow-band characteristic of movement-based multi-media network need to be compressed processing to the Financial Information data, can adopt data group payload user data reduced overall, or some data field in the financial business bag is compressed separately.
The financial business pack arrangement
Operation system is to the source data processing of classifying, and encodes with unified mode and compresses, and generates concrete financial business bag.The independence that each financial business bag maintenance is relative and complete.
The financial business bag is divided into the types such as trade market data, trade variety data, file information data, and this part has defined the concrete structure of various financial business bag data.
The trade market data
The trade market data description macroscopic information of a trade market, comprise the market master data, market expansion data etc.
The market master data
The market master data has been described the essential information of a trade market, comprises market code, trade variety sum, trade date, the information such as transaction coded system.Definition sees Table 5.
Table 5 market master data
The data type sign
8 bit fields, the type identification of expression market master data, appendix A is seen in the distribution of data type identification number.
System time
32 bit fields, adopt the Unixtime form at the expression operation system reference time.
City's number
8 bit fields, the market that comprises in current business bag sum.
Market code
8 bit fields, the expression operation system is distributed to the code in this market.Concrete market code allocation table is seen appendix B.
The market synchronous code
16 bit fields are generated according to Transaction Information and the state on this market same day automatically by the operation code system, and the data that can be used for terminal and system end are synchronous.
Essential information length
8 bit fields, the length of expression market essential information is take byte as unit.
The market essential information
The market essential information can comprise market category, current trade date, market kind sum, the data such as state of market.
The market expansion data
The market expansion data description extend information of a trade market, comprise market code, market name, the information such as trading session.Definition sees Table 6.
Table 6 market expansion data
The data type sign
8 bit fields, the type identification of expression market expansion data, appendix A is seen in the distribution of data type identification number.
Market code
8 bit fields, the expression operation system is distributed to the code in this market.Concrete market code allocation table is seen appendix B.
The market synchronous code
16 bit fields are generated according to Transaction Information and the state on this market same day automatically by the operation code system, and the data that can be used for terminal and system end are synchronous.
Extend information length
8 bit fields, the length of expression market expansion information is take byte as unit.
Market expansion information
Market expansion information can comprise the data such as market name, method of commerce, trade mode, trading session.
The trade variety data
The trade variety data description specifying information of each trade variety of trade market, comprise kind master data, kind growth data, market master data, historical data, covering data, by a data etc.
The kind master data
The kind master data has been described the essential information of a concrete trade variety, comprises the data such as variety name, code, type, reference price.Definition sees Table 7.
Table 7 kind master data table
The data type sign
8 bit fields, the type identification of expression kind master data, appendix A is seen in the distribution of data type identification number.
Market code
8 bit fields represent the market code that these financial business bag data are affiliated.Concrete market code allocation table is seen appendix B.
The market synchronous code
16 bit fields are generated according to Transaction Information and the state on this market same day automatically by the operation code system, and the data that can be used for terminal and system end are synchronous.
Kind quantity
8 bit fields, the kind quantity that comprises in the expression current business bag.
The kind essential information
Variable length field, this field value represent the essential information of concrete each kind, can comprise the data such as kind index, kind code, variety name, variety type, kind reference price.
The kind growth data
The kind growth data has been described the extend information of a concrete trade variety, comprises Breed property, stateful transaction, removes the data such as power ex dividend state, per share face amount, total circulation, circulation number of share of stock, listing date, the date of delivery.Definition sees Table 8.
Table 8 kind growth data table
The data type sign
8 bit fields, the type identification of expression kind growth data, appendix A is seen in the distribution of data type identification number.
Market code
8 bit fields represent the market code that these financial business bag data are affiliated.Concrete market code allocation table is seen appendix B.
The market synchronous code
16 bit fields are generated according to Transaction Information and the state on this market same day automatically by the operation code system, and the data that can be used for terminal and system end are synchronous.
Kind quantity
8 bit fields, the kind quantity that comprises in the expression current business bag.
The kind extend information
Variable length field, this field value represent the extend information of concrete each kind, can comprise Breed property, stateful transaction, remove the data such as power ex dividend state, per share face amount, total circulation, circulation number of share of stock, listing date, the date of delivery.
Basic market data
Basic market data description a concrete trade variety at sometime main market data field state, comprise the data such as highest price, lowest price, opening price.Definition sees Table 9.
The basic market tables of data of table 9
The data type sign
8 bit fields represent the type identification of basic market data, and appendix A is seen in the distribution of data type identification number.
Market code
8 bit fields represent the market code that these financial business bag data are affiliated.Concrete market code allocation table is seen appendix B.
The market synchronous code
16 bit fields are generated according to Transaction Information and the state on this market same day automatically by the operation code system, and the data that can be used for terminal and system end are synchronous.
Kind quantity
8 bit fields, the kind quantity that comprises in the expression current business bag.
The basic market of kind
Variable length field, this field value represent the basic quotation information of concrete each kind, can comprise the data such as highest price, lowest price, opening price.
Historical data
Historical data has been described the history conclusion of the business information of a concrete trade variety, comprises the data such as trade date, opening price, closing price, highest price, lowest price, volume of business, turnover.Definition sees Table 10.
Table 10 historical data table
The data type sign
8 bit fields, the type identification of expression historical data, appendix A is seen in the distribution of data type identification number.
Market code
8 bit fields represent the market code that these financial business bag data are affiliated.Concrete market code allocation table is seen appendix B.
The market synchronous code
16 bit fields are generated according to Transaction Information and the state on this market same day automatically by the operation code system, and the data that can be used for terminal and system end are synchronous.
Data amount check
8 bit fields, the historical data number that comprises in the expression current business bag.
The kind code
32 bit fields, this field value represent that current kind is at the cognizance code of this marketing sharing.
Historical conclusion of the business information
Variable length field.This field represents the concrete quotation information of certain historical trading day, comprises the data such as trade date, opening price, closing price, highest price, lowest price, volume of business, turnover.
The covering data
The covering data description covering data of a concrete current trade date of trade variety, comprise the data such as location index, knock-down price, volume of business, turnover.Definition sees Table 11.
Table 11 covering tables of data
The data type sign
8 bit fields, the type identification of expression covering data, appendix A is seen in the distribution of data type identification number.
Market code
8 bit fields represent the market code that these financial business bag data are affiliated.Concrete market code allocation table is seen appendix B.
The market synchronous code
16 bit fields are generated according to Transaction Information and the state on this market same day automatically by the operation code system, and the data that can be used for terminal and system end are synchronous.
Covering quantity
8 bit fields, the record number of the covering data that comprise in the expression current data packet.
The kind index
Variable length field, this field value represent that current kind is in the index number in this market.Concrete field length Y is determined by the essential information field in this market master data.
The covering data
Variable length field, this field value represent the covering transaction data of concrete certain time point, can comprise the data such as location index, knock-down price, volume of business, turnover.
By a data
Pursue the real-time transaction data that a data has been described a concrete trade variety, can comprise knock-down price, volume of business, turnover, inner disc, outer disk, the data such as order.Definition sees Table 12.
Table 12 is by a tables of data
The data type sign
8 bit fields, expression is by the type identification of a data, and appendix A is seen in the distribution of data type identification number.
Market code
8 bit fields represent the market code that these financial business bag data are affiliated.Concrete market code allocation table is seen appendix B.
The market synchronous code
16 bit fields are generated according to Transaction Information and the state on this market same day automatically by the operation code system, and the data that can be used for terminal and system end are synchronous.
Kind quantity
8 bit fields, the kind quantity that comprises in the expression current business bag.
By a data
Variable length field, book are closed the real-time by the transaction data of certain kind of expression, can comprise knock-down price, volume of business, turnover, inner disc, outer disk, the data such as order.
File information data
File information data description the files classes data messages, comprise the basic side information paper of concrete trade variety, stock comment file, exchange's notice information file, other third party's message files etc.
The file data of description
The file data of description has been described the essential information of a concrete information file, comprises information type, filename, file index, file size, the information such as title.Definition sees Table 13.
Table 13 file data of description table
The data type sign
8 bit fields, the type identification of expression file data of description, appendix A is seen in the distribution of data type identification number.
File type
8 bit fields, the type coding of expression current file.The coding assignment of concrete file type is seen appendix D.
Provider's code
16 bit fields, the code of expression current file content supplier.The assignment of code of particular content provider is specified by coded system.
File identification
32 bit fields, unique recognition coding of expression current file.This sign can uniquely be determined a file within certain cycle of operation.
The file verification code
32 bit fields, the check code of expression current file.When the content of file changed, this check code also can change thereupon.
The compressing file type
4 bit fields, the expression current file whether adopted compressed encoding.Concrete compressed encoding sees Table 14.
Table 14 compressing file type coding
The character code type
4 bit fields, the coded character set that indication current file information text acquiescence adopts, the corresponding table of specific coding type for details, see the appendix C.
Document time
32 bit fields, the modification time at server end of expression current file is used the UnixTime form.
File size
32 bit fields, the length of expression current file is take byte as unit.
Filename length
8 bit fields, value 0～255, the filename length of expression current file is take byte as unit.
File title length
8 bit fields, value 0～255, the file title length of expression current file is take byte as unit.
Filename
8 bit fields, a character string, the content of expression current file title.The filename employed character set of encoding is determined by the character code type field.
File title
8 bit fields, a character string, expression current file title content.The file title employed character set of encoding is determined by the character code type field.
The file content data
The file content data have been carried the file content of a concrete information file, also comprise the information such as file index.Definition sees Table 15.
Table 15 file content tables of data
The data type sign
8 bit fields, the type identification of expression file content data of description, appendix A is seen in the distribution of data type identification number.
File type
8 bit fields, the type coding of expression current file.The coding assignment of concrete file type is seen appendix D.
Provider's code
16 bit fields, the code of expression current file content supplier.The assignment of code of particular content provider is specified by coded system.
File identification
32 bit fields, unique recognition coding of expression current file.This sign can uniquely be determined a file within certain cycle of operation.
The file verification code
32 bit fields, the check code of expression current file.When the content of file changed, this check code also can change thereupon.
Document misregistration
32 bit fields, expression current file piece content original position is with respect to the side-play amount of file head.
The blocks of files sum
16 bit fields, what file bag content-data bags the expression current file is divided into altogether transmits.
The blocks of files size
16 bit fields, each file block size when the expression current file is divided into a series of file bag content-data bag.
The blocks of files content
8 bit fields, a binary data string, the concrete content of expression current file piece.
Appendix A
(informative annex)
The data type allocation table
Appendix B
(informative annex)
The market code allocation table
Appendix C
(informative annex)
Character set
Appendix D
(informative annex)
The file type coded set
Claims (7)
1. the compression method of a mobile multi-media broadcasting data is characterized in that, described data are relevant with financial business information, and wherein, described compression method comprises:
Form data group head, described data group head comprises
The data broadcast synchronization character of activating business, 8 bit fields, the start byte of sign extended data services data packet head;
Payload user data length, 10 bit fields, the length of identification data payload is take byte as unit;
Encryption type, 2 bit fields, the encryption type that the expression payload user data uses;
Compression type, 2 bit fields, the compressed encoding type that the expression payload user data uses;
The verification type, 2 bit fields, the verification type that expression is used the data payload;
The extended data services type identification, 8 bit fields, the coding of the type of service that expression current data group is represented;
Keep, 8 bit fields keep;
Check word, 16 bit fields, expression is calculated the 16 bit check word processings that produce to the data payload according to certain checking algorithm;
Form data group payload user data, described data group payload is the 8N bit field, and wherein N is integer;
The data that financial business information is relevant are compressed processing, adopt data group payload user data reduced overall, or the data field in the financial business bag is compressed separately.
2. the compression method of mobile multi-media broadcasting data as claimed in claim 1 is characterized in that, comes the integrality of check data by the checking to data group payload user data length and check word.
3. the compression method of mobile multi-media broadcasting data as claimed in claim 2 is characterized in that,
Described check word is according to the checking algorithm of data group header check type field indication, and the content of data payload is carried out the result that correlation computations obtains, and the calculating of check word is being carried out to the compression of data payload or after encrypting.
4. the compression method of mobile multi-media broadcasting data as claimed in claim 1 is characterized in that,
Described financial business bag comprises trade market data, trade variety data, file information data.
5. the compression method of mobile multi-media broadcasting data as claimed in claim 4 is characterized in that,
Described trade market data description the macroscopic information of trade market, comprise the market master data, the market expansion data;
Described market master data has been described the essential information of trade market, comprising:
The data type sign, 8 bit fields, the type identification of expression market master data;
System time, 32 bit fields, adopt the Unixtime form at the expression operation system reference time;
City's number, 8 bit fields, the market that comprises in current business bag sum;
Market code, 8 bit fields, the expression operation system is distributed to the code in this market;
The market synchronous code, 16 bit fields are generated according to Transaction Information and the state on this market same day automatically by the operation code system, and the data that are used for terminal and system end are synchronous;
Essential information length, 8 bit fields, the length of expression market essential information is take byte as unit;
Essential information, 8 bit fields comprise market category, current trade date, market kind sum, state of market;
Described market expansion data description the extend information of trade market, comprising:
The data type sign, 8 bit fields, the type identification of expression market expansion data;
Market code, 8 bit fields, the expression operation system is distributed to the code in this market;
The market synchronous code, 16 bit fields are used for realizing that data are synchronous;
Extend information length, 8 bit fields, the length of expression market expansion information is take byte as unit;
Market expansion information, 8 bit fields, market expansion information can comprise market name, method of commerce, trade mode, trading session.
6. the compression method of mobile multi-media broadcasting data as claimed in claim 4 is characterized in that,
Described trade variety data description the specifying information of each trade variety of trade market, comprise kind master data, kind growth data, market master data, historical data, covering data, by a data;
Described kind master data has been described the essential information of concrete trade variety, comprising:
The data type sign, 8 bit fields, the type identification of expression kind master data;
Market code, 8 bit fields represent the market code that these financial business bag data are affiliated;
The market synchronous code, 16 bit fields are generated according to Transaction Information and the state on this market same day automatically by the operation code system, and the data that are used for terminal and system end are synchronous;
Kind quantity, 8 bit fields, the kind quantity that comprises in the expression current business bag;
The kind essential information, variable length field, the essential information of concrete each kind of expression comprises the kind index, kind code, variety name, variety type, kind reference price;
Described kind growth data has been described the extend information of concrete trade variety, comprising:
The data type sign, 8 bit fields, the type identification of expression kind growth data;
Market code, 8 bit fields represent the market code that these financial business bag data are affiliated;
The market synchronous code, 16 bit fields are generated according to Transaction Information and the state on this market same day automatically by the operation code system, and the data that are used for terminal and system end are synchronous;
Kind quantity, 8 bit fields, the kind quantity that comprises in the expression current business bag;
The kind extend information, variable length field, the extend information of concrete each kind of expression comprises Breed property, stateful transaction, removes power ex dividend state, per share face amount, total circulation, circulation number of share of stock, listing date, the date of delivery;
Described market master data has been described concrete trade variety at sometime main market data field state, comprising:
Data type sign, 8 bit fields represent the type identification of basic market data;
Market code, 8 bit fields represent the market code that these financial business bag data are affiliated;
The market synchronous code, 16 bit fields are generated according to Transaction Information and the state on this market same day automatically by the operation code system, and the data that are used for terminal and system end are synchronous;
Kind quantity, 8 bit fields, the kind quantity that comprises in the expression current business bag;
The basic market of kind, variable length field, the basic quotation information of concrete each kind of expression comprises highest price, lowest price, opening price;
Described historical data has been described the history conclusion of the business information of concrete trade variety, comprising:
The data type sign, 8 bit fields, the type identification of expression historical data;
Market code, 8 bit fields represent the market code that these financial business bag data are affiliated;
The market synchronous code, 16 bit fields are used for realizing that data are synchronous;
Data amount check, 8 bit fields, the historical data number that comprises in the expression current business bag;
The kind code, 32 bit fields represent that current kind is at the cognizance code of this marketing sharing;
Historical conclusion of the business information, variable length field, the concrete quotation information of a historical trading day of expression comprises trade date, opening price, closing price, highest price, lowest price, volume of business, turnover;
Described covering data description the covering data of the current trade date of concrete trade variety, comprising:
The data type sign, 8 bit fields, the type identification of expression covering data;
Market code, 8 bit fields represent the market code that these financial business bag data are affiliated;
The market synchronous code, 16 bit fields are generated according to Transaction Information and the state on this market same day automatically by the operation code system, and the data that are used for terminal and system end are synchronous;
Covering quantity, 8 bit fields, the record number of the covering data that comprise in the expression current data packet;
The kind index, variable length field represents current kind in the index number in this market, field length is decided according to this market master data;
The covering data, variable length field, the covering transaction data of concrete certain time point of expression comprises location index, knock-down price, volume of business, turnover;
Describedly described the real-time transaction data of concrete trade variety by a data, having comprised:
The data type sign, 8 bit fields, expression is by the type identification of a data;
Market code, 8 bit fields represent the market code that these financial business bag data are affiliated;
The market synchronous code, 16 bit fields are generated according to Transaction Information and the state on this market same day automatically by the operation code system, and the data that are used for terminal and system end are synchronous;
Kind quantity, 8 bit fields, the kind quantity that comprises in the expression current business bag;
By a data, variable length field, the real-time transaction data of pursuing of a kind of expression comprise knock-down price, volume of business, turnover, inner disc, outer disk, order.
7. the compression method of mobile multi-media broadcasting data as claimed in claim 4 is characterized in that, described file information data description the files classes data messages, comprise file data of description and file content data;
Described file data of description has been described the essential information of concrete information file, comprising:
The data type sign, 8 bit fields, the type identification of expression file data of description;
File type, 8 bit fields, the type coding of expression current file;
Provider's code, 16 bit fields, the code of expression current file content supplier, the assignment of code of this content supplier is specified by coded system;
File identification, 32 bit fields, unique recognition coding of expression current file, this sign can uniquely be determined a file within certain cycle of operation;
The file verification code, 32 bit fields, the check code of expression current file, when the content of file changed, this check code also can change thereupon;
The compressing file type, 4 bit fields, the expression current file whether adopted compressed encoding;
The character code type, 4 bit fields, the coded character set of indicating this current file information text acquiescence to adopt;
Document time, 32 bit fields, the modification time at server end of expression current file is used the UnixTime form;
File size, 32 bit fields, the length of expression current file is take byte as unit;
Filename length, 8 bit fields, value 0～255, the filename length of expression current file is take byte as unit;
File title length, 8 bit fields, value 0～255, the file title length of expression current file is take byte as unit;
Filename, 8 bit fields, a character string, the content of expression current file title, the filename employed character set of encoding is determined by the character code type field;
File title, 8 bit fields, a character string, expression current file title content, the file title employed character set of encoding is determined by the character code type field;
Described file content data have been carried the file content of a concrete information file, comprising:
The data type sign, 8 bit fields, the type identification of expression file content data of description;
File type, 8 bit fields, the type coding of expression current file;
Provider's code, 16 bit fields, the code of expression current file content supplier, the assignment of code of particular content provider is specified by coded system;
File identification, 32 bit fields, unique recognition coding of expression current file, this sign can uniquely be determined a file within certain cycle of operation;
The file verification code, 32 bit fields, the check code of expression current file, when the content of file changed, this check code also can change thereupon;
Document misregistration, 32 bit fields, expression current file piece content original position is with respect to the side-play amount of file head;
The blocks of files sum, 16 bit fields, what file bag content-data bags the expression current file is divided into altogether transmits;
The blocks of files size, 16 bit fields, each file block size when the expression current file is divided into a series of file bag content-data bag;
The blocks of files content, 8 bit fields, a binary data string, the concrete content of expression current file piece.
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| CN102638579B (en) * | 2012-03-29 | 2016-05-04 | 深圳市高正软件有限公司 | A kind of data processing method and system based on mobile device data transmission |
| CN111337133B (en) * | 2020-03-02 | 2021-08-03 | 浙江大华技术股份有限公司 | Infrared data generation method and device and infrared data analysis method and device |
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| CN101212263A (en) * | 2007-12-25 | 2008-07-02 | 深圳清华大学研究院 | Compressed encoding method for stock information data |
| CN101267281A (en) * | 2008-04-25 | 2008-09-17 | 北京中企开源信息技术有限公司 | A transmission method and system for securities market data |
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| CN101212263A (en) * | 2007-12-25 | 2008-07-02 | 深圳清华大学研究院 | Compressed encoding method for stock information data |
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