CN101212689A - Method for software upgrade for digital TV signal receiver - Google Patents
Method for software upgrade for digital TV signal receiver Download PDFInfo
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- CN101212689A CN101212689A CNA2006101709114A CN200610170911A CN101212689A CN 101212689 A CN101212689 A CN 101212689A CN A2006101709114 A CNA2006101709114 A CN A2006101709114A CN 200610170911 A CN200610170911 A CN 200610170911A CN 101212689 A CN101212689 A CN 101212689A
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Abstract
The invention discloses a software upgrading method for receiving equipment of a digital television signal, aiming at improving the rapidness and flexibility of software update. The specific steps are as follows: firstly, a required program code of software update is sealed and packed to form a data stream file, and then multiplexed to a broadcasting and television program stream; secondly, the broadcast and television program stream is sent by a broadcasting and television station; finally, receiving terminal equipment extracts the data stream file of the software update from the broadcasting and television program stream so as to upgrade an internal software thereof online. The software upgrading method of the invention is convenient, rapid and flexible, and reduces the work of maintainers and maintenance cost.
Description
Technical field
The present invention relates to a kind of method for upgrading software, specifically, but the software that relates to a kind of terminal receiving equipment to receiving digital television signal is realized the method for online upgrading.
Background technology
At present, for the electronic receiving equipment that can receive the digital television signal that TV and Radio Service sends, as teaching machine top box, digital television etc., its software upgrading function adopts hardware connection mode such as serial ports to write software upgrade procedure usually from External memory equipment.This method for upgrading software requires than higher the attendant, and needs staff's field adjustable to safeguard, thereby has increased maintenance cost, has also brought inconvenience for simultaneously client's use.Along with the development of Digital Television, the requirement of software function is increased day by day, this just needs producer to bring in constant renewal in or increases software function module to satisfy the ever-increasing market demand.Based on above reason, how to provide a kind of convenient, fast, method for upgrading software is extremely urgent flexibly.
Summary of the invention
The objective of the invention is to, a kind of on-line software updating method of digital TV signal receiver is provided, to improve the agility and the flexibility of software upgrading.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is:
At first, the program code that software upgrading is required is packaged into data streaming file, is multiplexed in the broadcast TV program stream;
Secondly, send described broadcast TV program stream by TV and Radio Service;
Then, the terminal receiving equipment extracts described software upgrade data stream file from described broadcast TV program stream, and then internal software is carried out online upgrading.
Described broadcast TV program stream is TS stream, considers the carrier of TS stream as broadcast data, except can loading essential informations such as audio frequency, video, can also load various form data and private data.Utilize this characteristics, the present invention's program code that described software upgrading is required is multiplexed in the described TS stream after being packaged into form, uses for the upgrading of terminal receiving equipment.
For the reliable transmission that realizes software upgrade procedure is downloaded, described form comprises upgrade parameter form and data download form, wherein, includes software upgrading and operate needed various configuration information in described upgrade parameter form; Data are downloaded in the form and are included ROMPaq code data piece.Described upgrade parameter form is selected self-defining CDT form.
Described upgrade parameter form and data are downloaded form and are multiplexed into respectively in the described TS stream by a player separately.
Correctly select the software upgrade procedure of this model for the terminal receiving equipment that instructs different model, in described upgrade parameter form, include software version number and hardware identification number, only when this machine software version is lower than current software version and hardware identification and number is complementary with this machine model, the just executive software download and upgrade operation of terminal receiving equipment.
In described upgrade parameter form, also include data and download the positional information of form, instruct the terminal receiving equipment to extract data according to described positional information and download content in the form, the program code data piece of the usefulness of promptly upgrading.
Because common ROMPaq code capacity is bigger, need be divided into a plurality of program code data pieces transmits respectively, the terminal receiving equipment is after extracting whole program code data pieces, it is reconfigured becomes complete Rom file, after verification is errorless, be written among the Flash Rom, finish online upgrading.
In order to guarantee the integrality of upgrade software, described Flash Rom refresh finish after, use the MD5 algorithm that the program code among the Flash Rom is partly produced 64 bit check values, and be stored among the EEPROM; During each start, system recomputates check value and compares with the check value stored among the EEPROM; If inconsistent, system quits work and provides prompting.
In order to prevent in escalation process, to make mistakes, for example cause the software upgrading failure under outage, signal interruption or the like abnormal conditions, software upgrading of the present invention is based on system's double startup, be after the each start of terminal receiving equipment resets, at first detect the record whether the upgrading failure is arranged, promptly can normally start; If can not normally start, then carry out the preceding program of upgrading, if do not have upgrading failure record, i.e. normal boot system.
Compared with prior art, advantage of the present invention and good effect are: the present invention utilizes TS stream load software upgrading data packet, send by TV and Radio Service's broadcasting, as the top box of digital machine of terminal receiving equipment, digital television etc. when upgrading, only need from TS stream, to extract multiplexing code data piece in TS stream, and then be integrated into complete software upgrade procedure, can realize the on-line software updating function of apparatus of digital television receiving, upgrade method is convenient, fast, alleviate work of maintenance personnel, reduced maintenance cost.
Description of drawings
Fig. 1 is the schematic diagram of ROMPaq code reuse in TS stream among the present invention;
Fig. 2 is the workflow block diagram that software upgrade data is downloaded.
Embodiment
Below in conjunction with the drawings and specific embodiments the present invention is done explanation in further detail.
The present invention is in order to simplify the software upgrading step, software code is inserted in the broadcast TV program stream, under the prerequisite of outside updating apparatus, realized the on-line software updating function of digital TV signal receiver, made things convenient for user and attendant's updating operation.
On-line software updating method of the present invention specifically comprises:
At first, the program code that software upgrading is required is packaged into data streaming file, is multiplexed in the broadcast TV program stream;
Secondly, send described broadcast TV program stream by TV and Radio Service;
Then, the terminal receiving equipment extracts described software upgrade data stream file from described broadcast TV program stream, and then internal software is carried out online upgrading.
In digital video broadcasting wire transmission technology DVB standard, TS stream is as the carrier of broadcast data, except can loading basic service information such as audio frequency, video, can also load various form data and private data, method for upgrading software of the present invention has used the CDT form.
Its workflow is: when the digital TV signal receiver operate as normal, the code among the Flash Rom will be copied in the dynamic memory and carry out; When upgrading, digital television devices extracts multiplexing code data piece in TS stream from TS stream, and is combined into complete Flash Rom image file again, checks and can rewrite upgrading to the code among the Flash Rom after errorless.
As shown in Figure 1, program code is encapsulated into corresponding form, form ROM data code data piece after, be inserted in the TS stream, so that use during the digital television devices upgrading.
For the reliable transmission that realizes software upgrade procedure is downloaded, described form need comprise upgrade parameter form and data download form, wherein, needed various configuration information is operated in software upgrading, comprise that data download relevant informations such as the positional information of form, debud mode, provider, hardware platform, software version and be stored in the upgrade parameter form, the present invention adopts the CDT form; Download among the form DDT and store real ROMPaq code data piece into data,, download software upgrade procedure thereby instruct digital television devices to arrive correct position by the position that the relevant position information in the CDT form is pointed out the DDT form.
Wherein, the data structure definition of the upgrade parameter form CDT of preservation software upgrading relevant parameter information is as shown in table 1.
Table 1
Parameter declaration:
Table_ID: gauge outfit, the present invention uses 0x80 as Table_ID, and apparatus of digital television receiving has determined whether software upgrade procedure according to the gauge outfit data;
Section_Length: begin the byte number that finishes up to data segment from next byte, value is 0x1D.The section of each CDT can comprise 1 or 2 Descriptor;
Transport_Stream_ID: the ID of transport stream, point out that the software upgrade data bag is the position of DDT form;
Version_number: version number, if change, should use latest edition;
Section_Number: the data segment numbering, value is 0; This parameter here is a reserved function, because CDT form parameter information amount of the present invention is less, so adopt a CDT form to get final product, therefore can get a fixed value; If need more parameter information later on, a plurality of CDT forms then can be set, at this moment need to define different data segment numberings, to show difference;
Last_Section_Number: last data segment numbering, promptly always total what data segments, value is 0 in the present invention;
CRC32:32 position cyclic redundancy check character joint, when the CRC decoder was received last byte of CRC32, output should be 0, otherwise represents wrong.
In described CDT form, according to what of parameter information, can only comprise the Descriptor of a kind of CDD list data structure, sign can be set at 0x81; The Descriptor that also can comprise 2 kinds of list data structures, for example CVD form and CDD form, its sign can be set at 0x80 and 0x81 respectively.Be provided with two kinds of Descriptor in the present invention, wherein the CVD form is not temporarily used, and the function expansion is used after giving over to.The data structure of described CVD form and CDD form is respectively referring to shown in table 2, the table 3.
Table 2
Table 3
Parameter declaration:
The Descriptor_Tag:descriptor identifier;
Descriptor_length: begin to calculate the length of whole descriptor from next byte;
Manufacturer_ID: vendor identification number, the present invention is defined as 0x21; Vendor identification number does not not simultaneously allow the software download upgrading;
Hardware_ID: hardware identification number, type difference according to digital television signal terminal receiving equipment, define different hardware identification number, only when hardware identification number and this machine type are complementary, think that just the software upgrade procedure of present broadcasting is the ROMPaq of this type, download on this machine this moment, can realize the online upgrading of this machine software; Definition in the present invention: the top box of digital machine corresponding hardware identifier of DB-650C model is 0x02, and hardware identification number does not allow the software download upgrading simultaneously; The hardware ID table of comparisons is referring to table 4.
Table 4
| Ardware model number | The Hardware_ID identifier |
| DB-650C | 0x02 |
| DB-651C | 0x01 |
| MS-2004DMB | 0X03 |
| MS-2004DVB | 0X04 |
| DB-651HDC | 0x05 |
Software_Version: software version number, only when this machine software version is lower than software version number in the data flow, could download and upgrade;
Issue_Date: software date issued, use astronomical Julian date (MJD) representation;
Download_Freqency: the modulating frequency of data download stream;
Download_Symbolrate: the symbol rate of data download stream;
Download_Qam: the qam mode of data download stream, 1 expression Qam16,2 expression Qam32,3 expression Qam64,4 expression Qam128,5 expression Qam256;
Download_PID: the PID of data download stream, value 0x1F40; Owing to include multiple private data in TS stream, different private datas has own unique PID; Software upgrade data bag of the present invention also is a kind of private data in essence, in order to prevent to conflict mutually with other private datas, has defined the exclusive PID of software upgrade data bag separately, to make things convenient for apparatus of digital television receiving identification;
Download_Table_ID: the form identification id of data download stream, value 0x68, promptly data are downloaded the gauge outfit of form DDT;
Estimated_Download_Duration: estimate download time.
Description by the CDT table, apparatus of digital television receiving can specified data be downloaded the position, modulation system, provider, hardware platform, software version of form DDT or the like information, can extract the content that data are downloaded form, the usability of program fragments of the usefulness of promptly upgrading according to these information.Then these fragments are reverted to complete Rom file, and be written among the Flash Rom, thereby realized the on-line software updating function of terminal receiving equipment.
Wherein, the data structure of data download form DDT is as shown in table 5:
Table 5
Parameter declaration:
Table_ID:DDT gauge outfit, value are 0x68;
Section_length: form length, begin to calculate from next byte, comprise CRC32, general value is 0xB4, last Section exception;
Table_ID_Extension: table I D expansion is a reservation function herein;
Version_Number: table version is a reservation function herein;
Section_Number: current Section numbering is used for identifying the position of program code data piece at the Rom file;
Last_Section_Number: last Section numbering;
The check byte of CRC32:Section, CRC decoder are exported after receiving CRC32 and be should be 0, otherwise this packet is wrong, should give to abandon.
Software upgrade procedure is pressed above table form encapsulation, produce corresponding data streaming file, this data streaming file is offered digital-TV operator be multiplexed in the program stream and get final product.
Fig. 2 shows the on-line software updating program flow chart of digital television devices, may further comprise the steps:
A, open the online upgrading menu;
B, detection CDT form if find that new version software is arranged, are then collected software code data block and verification in the DDT form, otherwise are returned the online upgrading menu, provide the information of no new upgraded version;
C, all software code data block download finish after, reconfigure and generate complete ROMPaq, be stored among the Flash;
D, new version information, system restart are set.
In order to prevent in escalation process, to make mistakes, for example cause the software upgrading failure under outage, signal interruption or the like abnormal conditions, software upgrading of the present invention need recover assurance system operate as normal by the software self check based on system's double startup.Can concrete steps comprise: at first detect the record whether the upgrading failure is arranged after the system reset, promptly normally start; If can not normally start, then carry out the preceding program of upgrading, if there is not upgrading failure record, can the normal boot system.
Use multiplexer, the data streaming file that produces is multiplexed in the broadcast program TS stream.During operation, it is multiplexing respectively respectively CDT and DDT list data to be pressed packet PID by two players, should select endless form when multiplexing, and the CDT multiplex rate is recommended to use 200kb/s, and the DDT multiplex rate can be from 300kb/s to 3000kb/s.PID should be do not changed when multiplexing,, then data streaming file should be regenerated if need to change PID.
Fail safe for software upgrading need take in from two aspects: the one, and the reliability of this machine upgrading, the i.e. measure of being taked under abominable, the upgrading failure scenarios of signal; The 2nd, prevent that the hacker from forging upgrade file and this document is added data flow, attacks digital TV products.
Answer the detection signal quality before the upgrading of this machine, forbid upgrading when signal quality is on the low side.The detection of its signal quality can compare acquisition by the amplitude to signal carrier and noise, compares with noise amplitude when being lower than a certain set point when the amplitude of signal carrier, thinks that signal quality is on the low side, forbids upgrading.Described set point is stored in the dynamic register of tuner.If data are downloaded and not finished and signal quality is reduced to thresholding when following in the escalation process, can restart system, continue to wait for or the prompting upgrading is failed and returned; If data are not downloaded system cut-off when finishing,, therefore, do not influence reliability owing to Flash is not rewritten; If system cut-off when Flash rewrites should reenter the upgrading interface when then start shooting next time, perhaps move another image file that backs up among the Rom.
In order to prevent this machine download forbidden code and to be written among the Flash, at first, tackle the granting of software data crossover tool and relevant documentation and carry out strictness control, otherwise may occur utilizing data transaction instrument puppet to produce the situation of data download stream.Secondly, also need to carry out code check, confirm that institute's data downloaded is legal, complete code at receiver end.The 3rd, for preventing clone our company of third company product, increase the hardware unique identifier.During Default Value identifier is write among the Flash, at first check the copy that stores among the Flash whether consistent after the system start-up, quit work when inconsistent with hwid.
In order to guarantee the integrality of software, Flash refresh finish after, use the MD5 algorithm that the program code among the Flash is partly produced 64 bit check values, and be stored among the EEPROM.During each start, require system recomputate check value and with EEPROM in the check value contrast of storing, if inconsistent, system should quit work and provide prompting.When factory reset, do not empty or adaptation check value, hardware ID and software version number.
The present invention is by adopting above-mentioned on-line software updating method, fundamentally solved the existing maintenance cost height of present software upgrading, upgrade job complexity, problem such as loaded down with trivial details, is a kind of really convenient, fast, on-line software updating method flexibly.
Certainly; above-mentioned explanation is not to be limitation of the present invention; the present invention also is not limited in above-mentioned giving an example, and variation, remodeling, interpolation or replacement that those skilled in the art are made in essential scope of the present invention also should belong to protection scope of the present invention.
Claims (10)
1. the method for upgrading software of a digital TV signal receiver is characterized in that:
At first, the program code that software upgrading is required is packaged into data streaming file, is multiplexed in the broadcast TV program stream;
Secondly, send described broadcast TV program stream by TV and Radio Service;
Then, the terminal receiving equipment extracts described software upgrade data stream file from described broadcast TV program stream, and then internal software is carried out online upgrading.
2. the method for upgrading software of digital TV signal receiver according to claim 1, it is characterized in that: described broadcast TV program stream is TS stream, the program code that described software upgrading is required is multiplexed in the described TS stream after being packaged into form, uses for the upgrading of terminal receiving equipment.
3. the method for upgrading software of digital TV signal receiver according to claim 2, it is characterized in that: described form comprises upgrade parameter form and data download form, wherein, in described upgrade parameter form, include software upgrading and operate needed various configuration information; Data are downloaded in the form and are included ROMPaq code data piece.
4. the method for upgrading software of digital TV signal receiver according to claim 3 is characterized in that: described upgrade parameter form and data are downloaded form and are multiplexed into respectively in the described TS stream by a player separately.
5. the method for upgrading software of digital TV signal receiver according to claim 3, it is characterized in that: described upgrade parameter form is the CDT form.
6. the method for upgrading software of digital TV signal receiver according to claim 3, it is characterized in that: in described upgrade parameter form, include software version number and hardware identification number, only when this machine software version is lower than current software version and hardware identification and number is complementary with this machine model, the just executive software download and upgrade operation of terminal receiving equipment.
7. according to the method for upgrading software of claim 3 or 6 described digital TV signal receivers, it is characterized in that: in described upgrade parameter form, include the positional information that data are downloaded form, instruct the terminal receiving equipment to extract data according to described positional information and download content in the form, the program code data piece of the usefulness of promptly upgrading.
8. the method for upgrading software of digital TV signal receiver according to claim 7, it is characterized in that: described program code data piece includes polylith, the terminal receiving equipment is after extracting whole program code data pieces, it is reconfigured becomes complete Rom file, after verification is errorless, be written among the Flash Rom, finish online upgrading.
9. the method for upgrading software of digital TV signal receiver according to claim 8, it is characterized in that: described Flash Rom refresh finish after, use the MD5 algorithm that the program code among the Flash Rom is partly produced 64 bit check values, and be stored among the EEPROM; During each start, system recomputates check value and compares with the check value stored among the EEPROM; If inconsistent, system quits work and provides prompting.
10. can the method for upgrading software of digital TV signal receiver according to claim 9 is characterized in that: after the each start of terminal receiving equipment resets, at first detect the record whether the upgrading failure is arranged, promptly normally start; If can not normally start, then carry out the preceding program of upgrading, if do not have upgrading failure record, i.e. normal boot system.
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| CN102103509A (en) * | 2010-11-23 | 2011-06-22 | Tcl集团股份有限公司 | Method for remotely and automatically upgrading Internet television |
| CN102427552A (en) * | 2011-09-26 | 2012-04-25 | 山东泰信电子有限公司 | Code stream broadcast system, code stream broadcast method and software over the air upgrade method |
| CN103019755A (en) * | 2011-09-26 | 2013-04-03 | 东莞易步机器人有限公司 | Wireless program downloading method of plurality of central processing units (CPUs) in embedded system |
| CN103026339A (en) * | 2010-08-06 | 2013-04-03 | 罗伯特·博世有限公司 | Method for reconfiguring software parameters in a microcontroller and microcontroller and control device |
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| CN102103509A (en) * | 2010-11-23 | 2011-06-22 | Tcl集团股份有限公司 | Method for remotely and automatically upgrading Internet television |
| CN103019755B (en) * | 2011-09-26 | 2016-04-20 | 东莞易步机器人有限公司 | The wireless program method for down loading of multi-CPU in embedded system |
| CN102427552A (en) * | 2011-09-26 | 2012-04-25 | 山东泰信电子有限公司 | Code stream broadcast system, code stream broadcast method and software over the air upgrade method |
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| CN104699721A (en) * | 2013-12-10 | 2015-06-10 | 中国航空工业集团公司第六三一研究所 | Massive industrial data organization implementation method |
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| CN106791942A (en) * | 2016-12-30 | 2017-05-31 | 北京四达时代软件技术股份有限公司 | Data processing method and data processing equipment |
| CN107911718A (en) * | 2017-11-06 | 2018-04-13 | 深圳前海茂佳软件科技有限公司 | Digital TV software upgrade method, apparatus and computer-readable recording medium |
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| CN108495189A (en) * | 2018-05-11 | 2018-09-04 | 广州视源电子科技股份有限公司 | Television data update method, device, readable storage medium storing program for executing and electronic equipment |
| CN110337038A (en) * | 2019-07-09 | 2019-10-15 | 深圳市友华通信技术有限公司 | The upgrade method of Convergence gateway equipment |
| CN110337038B (en) * | 2019-07-09 | 2021-05-11 | 深圳市友华通信技术有限公司 | Upgrading method of convergence gateway equipment |
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