CN108513163B - Software updating method for television and related circuit - Google Patents
Software updating method for television and related circuit Download PDFInfo
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- CN108513163B CN108513163B CN201710108040.1A CN201710108040A CN108513163B CN 108513163 B CN108513163 B CN 108513163B CN 201710108040 A CN201710108040 A CN 201710108040A CN 108513163 B CN108513163 B CN 108513163B
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- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000013507 mapping Methods 0.000 claims abstract description 20
- 239000000872 buffer Substances 0.000 claims description 4
- 238000005192 partition Methods 0.000 description 29
- 238000010586 diagram Methods 0.000 description 4
- 230000006837 decompression Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/443—OS processes, e.g. booting an STB, implementing a Java virtual machine in an STB or power management in an STB
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/433—Content storage operation, e.g. storage operation in response to a pause request, caching operations
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
- H04N21/4405—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving video stream decryption
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
- H04N21/458—Scheduling content for creating a personalised stream, e.g. by combining a locally stored advertisement with an incoming stream; Updating operations, e.g. for OS modules ; time-related management operations
- H04N21/4586—Content update operation triggered locally, e.g. by comparing the version of software modules in a DVB carousel to the version stored locally
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
- H04N21/462—Content or additional data management, e.g. creating a master electronic program guide from data received from the Internet and a Head-end, controlling the complexity of a video stream by scaling the resolution or bit-rate based on the client capabilities
- H04N21/4627—Rights management associated to the content
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Databases & Information Systems (AREA)
- Software Systems (AREA)
- Computer Security & Cryptography (AREA)
- Storage Device Security (AREA)
- Stored Programmes (AREA)
Abstract
A software updating method for a television comprises the following steps: downloading an update mapping file through a network, wherein the update mapping file comprises a description file and a plurality of data; storing the updated mapping file into a memory; reading the description file from the memory; obtaining information of the data from the specification file; reading the data from the memory in sequence according to the information; performing data filling on the plurality of data to generate a plurality of filled data; and updating the software in the television according to the plurality of filled data.
Description
Technical Field
The invention relates to a software updating method applied to a television and a related circuit.
Background
When the software in the television needs to be updated, an update image file is obtained through Over Air Download (OAD), and the software of the television is updated through the update image file. Since the update image file usually has a large data size, in order to reduce the time required for downloading, the update image file is usually compressed into a compressed file, and the decompression and update operations are performed until the update image file is downloaded to the television. However, the decompression operation requires the use of an extra buffer, in other words, requires a large memory space, thereby increasing the cost.
Disclosure of Invention
Therefore, an object of the present invention is to provide a software updating method applied to a television, which can complete downloading of an update image file and update television software by using less memory space without increasing downloading time, so as to solve the problems in the prior art.
In an embodiment of the present invention, a method for updating software of a television is disclosed, which includes: downloading an update mapping file through a network, wherein the update mapping file comprises a description file and a plurality of data; storing the updated mapping file from a memory; reading the description file from the memory; obtaining information of the data from the specification file; reading the data from the memory in sequence according to the information; performing data filling on the plurality of data to generate a plurality of filled data; and updating the software in the television according to the plurality of filled data.
In another embodiment of the present invention, a circuit for a television is disclosed, which includes a network interface circuit and a control circuit. The network interface circuit is used for connecting to an external network; the control circuit downloads an updating mapping file containing a description file and a plurality of data through the network interface circuit, stores the updating mapping file into a memory, reads the description file from the memory to obtain information of the data from the description file, sequentially reads the data from the memory according to the information, and performs data filling on the data to generate a plurality of filled data so as to update software in the television.
Drawings
Fig. 1 is a block diagram of a television according to an embodiment of the present invention.
FIG. 2 is a flowchart illustrating downloading an update image file according to an embodiment of the present invention.
FIG. 3 is a diagram illustrating data stored in a flash memory.
FIG. 4 is a flowchart illustrating updating data stored in a partition in a flash memory by using a downloaded update image file according to an embodiment of the present invention.
Description of the symbols
100 TV
110 network interface circuit
120 control circuit
130 decryption circuit
140 flash memory controller
150 flash memory
160 dynamic random access memory controller
170 dynamic random access memory
200 to 210, 400 to 420
312. 314, 316, 318, 320 partition
351 encrypted description file
352 encrypted core data
353 encrypted root file system data
354 encrypted vendor data
355 encrypted security data
356 encrypted identification data
Detailed Description
Please refer to fig. 1, which is a block diagram of a television 100 according to an embodiment of the present invention. As shown in fig. 1, the television 100 includes a network interface circuit 110, a control circuit 120, a decryption circuit 130, a flash Memory controller 140, a flash Memory 150, a Dynamic Random Access Memory (DRAM) controller 160, and a DRAM 170. In the present embodiment, the control circuit 120 accesses the flash memory 150 through the flash controller 140 and accesses the dynamic random access memory 170 through the dynamic random access memory controller 160, the flash memory 150 stores a software program for controlling the operation of the television 100, and the control circuit 120 can obtain an update image file through the network interface circuit 110 by an over-the-air (OAD) method to update the software program.
Since the objective of the present invention is focused on the software updating method in the television 100, the details of other components in the television 100 are not described herein.
Please refer to fig. 1 and 2, wherein fig. 2 is a flowchart illustrating downloading an update image file according to an embodiment of the present invention. In step 200, the process starts and the control circuit 120 downloads the update image file from the external network through the network interface circuit 110. In step 202, the control circuit 120 checks whether the update mapping file is completely downloaded, and if not, the process goes to step 204; if the download is complete, the process proceeds to step 208. In step 204, the control circuit 120 continuously downloads the portions of the updated mapping file sequentially through the network interface circuit 110, and temporarily stores the downloaded portions of the updated mapping file into the dram 170 through the dram controller 160; next, in step 206, the control circuit 120 sequentially moves the portions of the updated mapping file originally stored in the dram 170 to the flash memory 150 through the dram controller 160 and the flash memory controller 140. In step 208, after the update image file is downloaded, the control circuit 120 enables an update tag stored in the flash memory 150, which indicates that there is a new image file available for software update. Finally, in step 210, the process ends.
In this embodiment, the update mapping file includes a description file and a plurality of data, where the plurality of data includes a core data, a root file system (root file system) data, a supplier data, a security data, and an identification (signature) data, and the description file and the plurality of data may be encrypted data or unencrypted data; in addition, the update image file itself may be a compressed file or uncompressed data. In this embodiment, the image file is updated to be encrypted data for security, and the image file is updated to be uncompressed data for cost, so that the capacity of the dram 170 can be reduced to save cost. Please note that the decompression process requires additional DRAM 170 as a buffer space, so that the above-mentioned buffer space is eliminated when the image file is updated to uncompressed data. Since the entire downloaded file is not required to be temporarily stored in the dram 170 during the downloading process, although the uncompressed update image file is larger than the compressed update image file, the requirement of the dram 170 is not actually increased. In addition, since the uncompressed update image file itself has a larger file size, which may increase the downloading time, the file size of the data in the update image file in this embodiment is related to the content of the data in the data, except that the description file has a fixed predetermined file size, and the data is not filled (padding) into a specific file size. The file size of the updated mapping file is reduced due to the reduction of the data filling amount of the data, and besides, the file size information of each of the rest data is recorded in the description file.
Referring to fig. 3, a schematic diagram of data stored in the flash memory 150 is shown. As shown in FIG. 3, the flash memory 150 comprises five partitions 312-320, wherein the partition 312 is used for storing kernel data, the partition 314 is used for storing root file system data, the partition 316 is used for storing vendor data, the partition 318 is used for storing configuration data, and the partition 320 is used for storing a downloaded update image file, which is used for updating each data stored in the partitions 312-318. In order to avoid data reading errors, the sizes of the partitions 312-320 are predetermined, so that it is ensured that data of one partition is not read while data of other partitions are read subsequently. Further, as described above, since the update image file in the present embodiment uses encrypted but uncompressed data, the update image file stored in the partition 320 includes the encrypted description file 351, the encrypted core data 352, the encrypted root file system data 353, the encrypted vendor data 354, the encrypted security data 355, and the encrypted identification data 356.
Please refer to fig. 4, which is a flowchart illustrating an embodiment of updating data stored in the partitions 312 to 318 of the flash memory 150 using the downloaded update image file. In step 400, the process begins and the television 100 is powered on and powered on. In step 402, the control circuit 120 checks whether the refresh tag in the flash memory 150 is enabled, and if so, it indicates that a new image file is available for software update in the flash memory 150, so the flow proceeds to step 406; if the update tag is not enabled, it indicates that no new image file is available in the flash memory 150 for software update, so the process proceeds to step 404 to directly start the television. The television booting step is performed according to the core data and the root file system data stored in the partitions 312 and 314 of the flash memory 150.
In step 406, since the encrypted profile 351 included in the update image file has a fixed predetermined file size (e.g., 0x2000 bytes), and the encrypted profile 351 is located at the top of the update image file, the control circuit 120 directly obtains the encrypted profile 351 from the first 0x2000 bytes of the update image file stored in the partition 320 of the flash memory 150 and stores the obtained encrypted profile into the dram 170. In step 408, the control circuit 120 reads the encrypted profile 351 from the dram 170, decrypts the encrypted profile 351 through the decryption circuit 130, and stores the decrypted profile back to the dram 170, and the decryption circuit 130 may have its own memory space for decryption. In this embodiment, the decrypted description file includes the file size of each of the encrypted core data 352, the encrypted root file system data 353, the encrypted vendor data 354, the encrypted security data 355, and the encrypted identification data 356 shown in fig. 3, so that the control circuit 120 can determine the start address of each piece of data according to the file size for use in subsequently reading each piece of data. In addition, the decrypted instruction file is stored in the DRAM 170 until the whole update process is finished.
Next, in step 410, the control circuit 120 sequentially reads the next data from the partition 320 of the flash memory 150 according to the file size of each data. Taking fig. 3 as an example, the control circuit 120 reads the encrypted core data 352, and in step 412, the control circuit 120 decrypts the encrypted core data 352 through the decryption circuit 130 to obtain decrypted core data, and then in step 414, data padding is performed on the decrypted core data to obtain padded core data, and in step 414, the dynamic random access memory 170 may be used as a temporary storage area for the core data before and after padding. As mentioned above, to avoid data reading errors, the size of the partitions 312 to 320 is predetermined, each data (e.g., the core data, the root file system data …, etc.) stored in the partitions 312 to 318 has a corresponding predetermined file size, and if the valid data size of the decrypted data is smaller than the predetermined file size, the back end of the data is data-padded (all "0" or all "1" is added) to make the file size of the data the predetermined file size. For example, assuming that the predetermined data size corresponding to the core data is 8 Megabits (MB) and the valid data size of the decrypted core data is 6MB, the control circuit 120 performs data stuffing of 2MB on the decrypted core data, so that the data size of the stuffed core data is 8 MB. In this embodiment, the control circuit 120 can determine the amount of data padding by comparing the valid data size of the decrypted data with the predetermined file size, and in another embodiment, the information of the amount of data padding can be directly included in the specification file, so that the control circuit 120 can directly perform data padding without performing additional comparison.
In step 416, the control circuit 120 updates the television software with the padded core data, i.e., updates the core data stored in the partition 312 of the flash memory 150 with the padded core data. In the embodiment, the unfilled core data is filled and stored in the dram 170 before being updated to the partition 312, but in another embodiment, the unfilled core data may be directly updated to the partition 312 and then filled, i.e., the data filling in the partition 312 is continued until the partition 312 is filled after the core data is updated. In other words, the order of step 414 and step 416 may be reversed.
Next, in step 418, the control circuit 418 determines whether the refresh operation is finished, if the refresh operation is finished, the control circuit 120 sets the refresh tag stored in the flash memory 150 to be disabled, and the process proceeds to step 420 to restart the television; if the update operation is not completed, the process returns to step 410 to read the next data from the update image file stored in the partition 320 of the flash memory 150, for example, to read the encrypted root file system data, and updates the root file system data stored in the partition 314 of fig. 3 through steps 412, 414 and 416. In addition, although the configuration data stored in the partition 318 does not need to be updated in the present embodiment, and the encrypted security data 355 and the encrypted identification data 356 do not need to be updated to the flash memory 150, the present invention is not limited thereto, and in other embodiments, the configuration data stored in the partition 318 may be updated, and the encrypted security data 355 and the encrypted identification data 356 may also be updated to the flash memory 150 as required.
In one embodiment, to reduce the usage space of the dram 170, each data is immediately removed from the dram 170 after the data is updated. For example, after the control circuit 418 updates the core data stored in the partition 312 shown in fig. 3 with the padded core data, the encrypted core data, the decrypted core data and/or the padded core data stored in the dram 170 are deleted immediately to release space for the next data (i.e., the root file system data).
Briefly summarized, the present invention provides a software updating method for a television, which can complete the downloading of an updated image file and the operation of updating television software under the condition of considering both the downloading time and the required memory space by performing data filling only at the television end, thereby effectively solving the problems in the prior art.
The above-mentioned embodiments are merely preferred embodiments of the present invention, and all equivalent changes and modifications made by the claims of the present invention should be covered by the scope of the present invention.
Claims (20)
1. A software update method for a television, comprising:
downloading an update mapping file through a network, wherein the update mapping file comprises a description file and a plurality of data;
storing the updated mapping file into a memory;
reading the description file from the memory;
obtaining information of the data from the specification file;
reading the data from the memory in sequence according to the information;
data padding the plurality of data to produce a plurality of padded data;
updating the software in the television according to the plurality of filled data; and
and starting the television according to the update.
2. The software updating method of claim 1, further comprising:
sequentially decrypting the plurality of data read from the memory to generate a plurality of decrypted data; wherein the step of performing data padding on the plurality of data to generate the plurality of padded data is to perform data padding on the plurality of decrypted data to generate the plurality of padded data according to file sizes of the plurality of decrypted data.
3. The software updating method of claim 2, wherein the information includes a file size of the plurality of decrypted data.
4. The method of claim 2, wherein the memory is a first memory, the step of padding the decrypted data according to the file size of the decrypted data to generate the padded data is to temporarily store the decrypted data and the padded data in a second memory, and for a first data of the data, after the corresponding padded data is used to update the software inside the television, the decrypted data and the padded data corresponding to the first data are removed from the second memory for temporarily storing the decrypted data and the padded data corresponding to a second data of the data.
5. The software updating method of claim 4, wherein the first memory is a flash memory and the second memory is a dynamic random access memory.
6. The method of claim 1, wherein the step of padding the data to generate the padded data is performed according to a file size of each data of the data and a predetermined file size corresponding to the file size.
7. The software updating method of claim 1, wherein the memory is a first memory, the software updating method further comprising:
storing the instruction file read from the first memory into a second memory; and
reading the instruction file from the second memory to obtain the file sizes of the plurality of data, wherein the instruction file is continuously stored in the second memory before the plurality of filled data are generated.
8. The software updating method of claim 7, wherein the first memory is a flash memory and the second memory is a dynamic random access memory.
9. The method of claim 1, wherein the step of storing the update image file in the memory comprises:
storing the updated mapping file in a space starting from a default address of the memory; and the step of reading the instruction file from the memory comprises:
reading the content of a default file size from the default address of the memory.
10. The software updating method of claim 1, wherein the information includes a file size of the plurality of data.
11. A circuit for use in a television, comprising:
a network interface circuit for connecting to an external network; and
a control circuit coupled to the network interface circuit; the control circuit downloads an update mapping file containing a description file and a plurality of data through the network interface circuit, stores the update mapping file into a memory, reads the description file from the memory to obtain information of the data from the description file, sequentially reads the data from the memory according to the information, and performs data filling on the data to generate a plurality of filled data for updating software inside the television, and starts the television according to the updating.
12. The circuit of claim 11, further comprising:
and the control circuit is used for carrying out data filling on the plurality of decrypted data according to the file sizes of the plurality of decrypted data so as to generate the plurality of filled data.
13. The circuit of claim 12, wherein the information comprises a file size of the plurality of decrypted data.
14. The circuit of claim 12, wherein the memory is a first memory, and the control circuit buffers the decrypted data and the padded data in a second memory; and aiming at a first data in the plurality of data, when the filled data corresponding to the first data is used for updating the software in the television, the control circuit removes the decrypted data and the filled data corresponding to the first data from the second memory so as to temporarily store the decrypted data and the filled data corresponding to a second data in the plurality of data.
15. The circuit of claim 14, wherein the first memory is a flash memory and the second memory is a dynamic random access memory, the circuit further comprising:
a flash memory controller for the control circuit to read and write the flash memory; and
a dynamic random access memory controller for the control circuit to read and write the dynamic random access memory.
16. The circuit of claim 11, wherein the control circuit determines how much each of the plurality of data is data-filled according to a file size of the each data and a predetermined file size corresponding to the file size.
17. The circuit of claim 11, wherein the memory is a first memory, and the control circuit stores the profile read from the first memory into a second memory and reads the profile from the second memory to obtain a file size of the plurality of data, wherein the profile is stored in the second memory continuously before the plurality of padded data is generated.
18. The circuit of claim 17, wherein the first memory is a flash memory and the second memory is a dynamic random access memory, the circuit further comprising:
a flash memory controller for the control circuit to read and write the flash memory; and
a dynamic random access memory controller for the control circuit to read and write the dynamic random access memory.
19. The circuit of claim 11, wherein the control circuit stores the update image file in space starting at a default address of the memory and reads contents of a default file size starting at the default address of the memory.
20. The circuit of claim 11, wherein the information comprises a file size of the plurality of data.
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| CN201710108040.1A CN108513163B (en) | 2017-02-27 | 2017-02-27 | Software updating method for television and related circuit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710108040.1A CN108513163B (en) | 2017-02-27 | 2017-02-27 | Software updating method for television and related circuit |
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| CN108513163A CN108513163A (en) | 2018-09-07 |
| CN108513163B true CN108513163B (en) | 2020-12-11 |
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| JPWO2002057904A1 (en) * | 2001-01-19 | 2004-05-27 | 富士通株式会社 | Control device with download function |
| US8910230B2 (en) * | 2010-01-22 | 2014-12-09 | Gainspeed, Inc. | Method of transforming HFC CATV analog fiber transmission to digital fiber transmission |
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| CN1798034A (en) * | 2004-12-31 | 2006-07-05 | 中国科学院声学研究所 | Method for upgrading software of digital terminal system in DVB system |
| CN101661395A (en) * | 2008-08-26 | 2010-03-03 | 四零四科技股份有限公司 | Embedded system capable of updating software automatically and software updating method thereof |
| CN102469359A (en) * | 2010-11-18 | 2012-05-23 | 晨星软件研发(深圳)有限公司 | Transport stream capable of intermittently updating firmware as well as data processing device and digital television |
| CN102298534A (en) * | 2011-09-22 | 2011-12-28 | 四川长虹电器股份有限公司 | Method for writing software into set-top box |
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| CN108513163A (en) | 2018-09-07 |
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