CN109308267B - Control method and control system of storage device of driving recorder - Google Patents
Control method and control system of storage device of driving recorder Download PDFInfo
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- CN109308267B CN109308267B CN201710628404.9A CN201710628404A CN109308267B CN 109308267 B CN109308267 B CN 109308267B CN 201710628404 A CN201710628404 A CN 201710628404A CN 109308267 B CN109308267 B CN 109308267B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F12/00—Accessing, addressing or allocating within memory systems or architectures
- G06F12/02—Addressing or allocation; Relocation
- G06F12/0223—User address space allocation, e.g. contiguous or non contiguous base addressing
- G06F12/023—Free address space management
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C5/00—Registering or indicating the working of vehicles
- G07C5/08—Registering or indicating performance data other than driving, working, idle, or waiting time, with or without registering driving, working, idle or waiting time
- G07C5/0841—Registering performance data
- G07C5/085—Registering performance data using electronic data carriers
- G07C5/0866—Registering performance data using electronic data carriers the electronic data carrier being a digital video recorder in combination with video camera
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- Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
Abstract
A control method of a storage device of a driving recorder and a control device of the storage device are provided. The control method of the storage device of the driving recorder comprises the following steps: a file directory table of a storage device is programmed according to a default file directory table stored in a storage unit. A file location allocation table of the storage device is planned according to a default file location allocation table stored in the storage unit. Controlling a controller to write data into the storage device according to the file directory table and the file location configuration table.
Description
Technical Field
The present invention relates to a control method and a control system, and more particularly, to a control method and a control system for a storage device of a driving recorder.
Background
A file system is a system for managing files in a storage device (e.g., SD card, hard disk, etc.) to efficiently access (content) the storage device. A File Allocation Table (FAT) is a common File system.
Referring to fig. 1, a conventional storage device 900 using a FAT file system is shown. The storage device 900 includes a File-Allocation-Table (File-Allocation-Table)920, a File Directory Table (Directory Entry)930, and a plurality of data areas (data clusters) 940. Taking the tachograph as an example, after writing and deleting files for many times, the data of the same file may be stored in the discontinuous data area 940 in a scattered manner. For example, as shown in FIG. 1, the file FA is stored in data area 940, which is numbered "13", "14", "15", "19", and "20".
The file directory table 930 is used to record the file name and the starting data area number stored in the storage device 900, and the file location allocation table 920 is used to record the link relationship of the data areas. For example, as shown in FIG. 1, the file directory table 930 indicates that a file FA is stored in the storage device 900, and the data of the file FA is stored in the data area 940 with the number "13". The file location allocation table 920 records "14" at the location corresponding to the data area 940 with the number "13", which indicates that the next data of the file FA is stored in the data area 940 with the number "14"; the file location allocation table 920 records "15" at the location corresponding to the data area 940 with the number "14", which indicates that the next data of the file FA is stored in the data area 940 with the number "15", and so on; in the file position allocation table 920, the position corresponding to the data area 940 with the number "20" records "EOC", which indicates that the data area 940 with the number "20" is the End Of file (EOC) Of the file FA.
Referring to fig. 2 and 3, fig. 2 is a flowchart illustrating a file writing method of a conventional tachograph, and fig. 3 is an exemplary diagram illustrating a storage device 900 according to the operation of fig. 2. For example, after the video recording program of the tachograph is started, the file location allocation table 920 in the storage device 900 is copied to a Dynamic Random Access Memory (DRAM) (step S901). Next, it is determined whether the storage space of the storage device 900 is sufficient according to the file location allocation table in the DRAM (step S902). If the storage device 900 has enough storage space, a data area is selected as a start data area to write data (e.g. the data area with the number "16") (step S903), and a file name (e.g. "FB") and a number of the start data area (e.g. "16") are added to the file directory table 930 (step S904). Then, another data area is selected to write data (e.g. the data area with the number "17") (step S905), and the number of the data area (e.g. "17") is recorded in the file location allocation table in the DRAM, corresponding to the location of the data area with the number "16") (step S906), and then data is written in the data area (step S907), and so on until the end of the file writing process. In addition, when the file location allocation table in the DRAM is updated a specific number of times (e.g., three times), the file location allocation table 920 in the storage device 900 is updated according to the file location allocation table in the DRAM until the file writing process is finished. After the file writing process is finished, the tachograph updates the file location allocation table 920 in the storage device 900 according to the file location allocation table in the DRAM again.
However, unexpected power loss due to a car accident may cause the file to be unreadable due to lack of a complete data link relationship (FAT chain). For example, as shown in FIG. 3, when the data in the data area 940 with the number "29" of the file FB is unexpectedly powered off, the data link relationship of the file FB is incomplete because the file location allocation table 920 in the storage device 900 has not been updated according to the file location allocation table in the DRAM, and the data stored in the data areas with the numbers "22" and "29" of the file FB cannot be read. The failure to read data from car accidents is a serious problem for car recorders.
Disclosure of Invention
The invention relates to a control method and a control system for a storage device of a driving recorder, which utilize a default File position configuration Table (Predetermined File-Allocation-Table) and a default File Directory Table (Predetermined Directory Entry) to plan the storage device, thereby avoiding the situation that a File cannot be read due to unexpected power failure.
According to an aspect of the present invention, a method for controlling a storage device of a tachograph is provided. The control method of the storage device of the driving recorder comprises the following steps: a File directory Table of a storage device is programmed according to a Predetermined File-Allocation-Table (Predefined File-Allocation-Table) stored in a storage unit. A file location allocation table of the storage device is programmed according to the default file location allocation table (Predetermined Directory Entry) stored in the storage unit. Controlling a controller to write data into the storage device according to the file directory table and the file location configuration table.
According to another aspect of the present invention, a storage device control system is provided. The storage device control system comprises a storage unit, a controller and a processor. The storage unit stores a default File Directory Entry and a default File location-Table. The controller is used for writing data into a storage device. The processor is configured to perform the following steps: planning a file directory table of the storage device according to the default file directory table; planning a file position configuration table of the storage device according to the default file position configuration table; and controlling the controller to write data into the storage device according to the file directory table and the file location configuration table.
In order to better understand the above and other aspects of the present invention, the following detailed description of the embodiments is made with reference to the accompanying drawings:
drawings
FIG. 1 is a diagram illustrating a conventional storage device using a FAT file system.
FIG. 2 is a flow chart showing a file writing method of a conventional tachograph.
FIG. 3 is a diagram illustrating an example of a storage device according to the operation of FIG. 2.
Fig. 4 is a block diagram of a control system according to an embodiment of the invention.
FIG. 5 is a flowchart illustrating a method for controlling a storage device of a driving recorder according to an embodiment of the present invention.
FIG. 6 is a diagram of a storage device for planning a file directory table and a file location allocation table according to an embodiment of the present invention.
FIG. 7 is a flowchart illustrating writing data to a storage device according to an embodiment of the present invention.
FIG. 8 is a diagram illustrating an example of a storage device according to the operation of FIG. 7.
Description of the symbols
100: control system
110: storage unit
120: controller
130: processor with a memory having a plurality of memory cells
200: camera with a lens having a plurality of lenses
400: storage device
420: file position configuration table
430: file catalogue table
440: data area
900: storage device
920: file position configuration table
930: file catalogue table
940: data area
FA. FB, FC, FD, FE: file system
S501 to S503, S704 to S707, and S901 to S908: step (ii) of
Detailed Description
In view of the problems of the conventional storage device of the driving recorder, a control method and a control system for the storage device of the driving recorder are proposed, which utilize a default File Directory Table (Predetermined Directory Entry) and a default File location-Table (Predetermined File-Allocation-Table) to plan the File location-Allocation Table and the File Directory Table of the storage device, thereby preventing the File from being unreadable due to unexpected power failure.
Fig. 4 is a block diagram of the control system 100 according to an embodiment of the invention. The control system 100 is, for example, a control chip. In the embodiment, the control system 100 is connected to a camera 200 and a storage device 400. The control system 100 and the camera 200 may be disposed in a driving recorder, for example. The storage device 400 is, for example, an SD memory card or a hard disk, and may be connected to the driving recorder. The control system 100 includes a storage unit 110, a controller 120, and a processor 130. The storage unit 110 is used for storing a default file directory table and a default file location allocation table. The controller 120 is used for writing data into the storage device 400. The processor 130 is configured to program a file directory table and a file location configuration table of the storage device 400.
FIG. 5 is a flowchart illustrating a method for controlling a storage device of a driving recorder according to an embodiment of the present invention. In this embodiment, each time the tachograph is started or each time the storage device 400 is replaced, the processor 130 checks whether there is a file directory table and a file location configuration table in the storage device 400 (step S501). If not, the processor 130 directly plans the file directory table and the file location configuration table in the storage unit 110 according to the default file directory table and the default file location configuration table in the storage unit 110 (step S503); if yes, the processor 130 further checks whether the file directory table and the file location configuration table in the storage device 400 are the same as the default file directory table and the default file location configuration table in the storage unit 110 (step S502). If not, the processor 130 directly configures the default file directory table and the default file location configuration table in the storage unit 110 according to the default file directory table and the default file location configuration table in the storage unit 110 (step S503).
FIG. 6 is a diagram of a storage device 400 for planning a file directory table and a file location allocation table according to an embodiment of the present invention. The storage device 400 includes a file location configuration table 420 configured according to a default file location configuration table, a file directory table 430 configured according to a default file directory table, and a plurality of data regions (data clusters) 440.
As shown in fig. 6, the processor 130 plans the file name "FC" corresponding to a file in the file directory table 430, and the data area with the number "11" corresponding to the start data area of the file FC, and the processor 130 further plans the data areas with the numbers "11" to "15" corresponding to the data link relation of the file FC in the file location allocation table 420. Similarly, processor 130 maps the file name "FD" corresponding to a file in file directory table 430, and the initial data area of file FD is the data area numbered "16", and processor 130 further maps the data areas corresponding to the data link relationships of file FD in file location allocation table 420, which are numbered "16" to "20".
In short, data of file FC is preset in data areas numbered "11" to "15", and data of file FD is preset in data areas numbered "16" to "20". It is noted that although the file directory table 430 and the file location allocation table 420 are completely configured, the data areas (i.e., the data areas numbered "11" to "20") corresponding to the files FC and FD in the storage device 400 do not store the data corresponding to the files FC and FD, as shown in fig. 6.
FIG. 7 is a flowchart illustrating writing data to the storage device 400 according to an embodiment of the present invention. In the present embodiment, the processor 130 controls the controller 120 to write data into the storage device 400 according to the file directory table 430 and the file location allocation table 420.
For example, when the car recorder starts recording, the processor 130 selects a file to write data according to the file directory table 430 (step S704). In one embodiment, the file name in the file directory table 430 carries time information, so the processor 130 can select the oldest file to write data according to the file name in the file directory table 430. Taking FIG. 6 as an example, the file FC is the oldest file.
Next, the processor 130 changes the file name corresponding to the file in the file directory table 430 (step S705). In the above example, the processor 130 changes the file name "FC" of the file directory table 430 corresponding to the file selected by the processor 130 to write data to "FE", as shown in fig. 8. It is noted that in the file directory table 430, the initial data area corresponding to the file FE remains unchanged and is still the data area numbered "11". In addition, in the file location allocation table 420, the data link relationship corresponding to the file FE remains unchanged, and the data areas are still the data areas numbered "11" to "15".
Then, the processor 130 controls the controller 130 to write data into the data area of the storage device 400 that is programmed to the file (step S706). In the above example, the processor 130 controls the controller 130 to sequentially write data into the data areas numbered "11" to "15" in the storage device 400, as shown in fig. 8.
Next, the processor 130 determines whether to continue writing data (step S707). If the data is continuously written, repeating the steps S704-S706; if the data is not continuously written, the process is ended.
As mentioned above, the processor 130 does not update the file location configuration table 420 during the writing of data into the storage device 300, so that even if the tachograph is unexpectedly powered off, the data link relationship corresponding to a file in the file location configuration table 420 can still be kept intact, and the data of the file in the storage device 300 can be completely read.
In addition, in the prior art, the processor takes time to search for a blank data area to write data. After many times of writing and deleting files, the blank data areas are often scattered (fragments), thereby reducing the efficiency of writing files. Compared with the prior art, the data area of the file is planned and can not be changed, so that the processor does not need to spend time searching the blank data area to write data, and the file writing efficiency (writing performance) is improved. In one embodiment, the data area of the file can be arranged to be continuous (as shown in FIG. 6), which can further improve the efficiency of file writing.
Furthermore, in the prior art, the processor needs to confirm whether the remaining space is sufficient before writing data. If not, the processor needs to delete the file name and the initial data area corresponding to at least one file in the file directory table, and delete the data link relation corresponding to the at least one file in the file location configuration table, thereby reducing the file writing efficiency. Compared with the prior art, the processor 110 of the present invention does not need to determine whether the remaining space is sufficient before writing data, and does not need to delete the file name and the initial data area in the file directory table and the data link relation in the file location allocation table, thereby further improving the file writing efficiency.
In summary, although the present invention has been described with reference to the above embodiments, the present invention is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, the protection scope of the present invention is subject to the claims.
Claims (10)
1. A control method of a storage device of a driving recorder comprises the following steps:
planning a file directory table of a storage device according to a default file directory table stored in a storage unit;
planning a file position configuration table of the storage device according to a default file position configuration table stored in the storage unit; and
controlling a controller to write data into the storage device according to the file directory table and the file location allocation table,
wherein, controlling the controller to write data into the storage device according to the file directory table and the file location allocation table comprises:
controlling the controller to write data into a data area of a file planned in the storage device according to the file position configuration table,
wherein, a starting data area corresponding to the file in the file directory table is kept unchanged, and a data link relation corresponding to the file in the file location configuration table is kept unchanged.
2. The method as claimed in claim 1, wherein the step of planning the file directory table of the storage device comprises:
and planning a file name corresponding to the file in the file directory table.
3. The method as claimed in claim 1, wherein the step of planning the file directory table of the storage device comprises:
the initial data area corresponding to the file in the file directory table is planned.
4. The method as claimed in claim 1, wherein the step of planning the file location configuration table of the storage device comprises:
planning the data link relation corresponding to the file in the file location configuration table.
5. The method as claimed in claim 2, wherein the step of controlling the controller to write data into the storage device according to the file location allocation table and the file directory table comprises:
changing the file name corresponding to the file in the file directory table.
6. A storage device control system, comprising:
a storage unit for storing a default file directory table and a default file location configuration table;
a controller for writing data into a storage device; and
a processor for performing the steps of:
planning a file directory table of the storage device according to the default file directory table;
planning a file position configuration table of the storage device according to the default file position configuration table; and
controlling the controller to write data into the storage device according to the file directory table and the file location allocation table,
wherein, controlling the controller to write data into the storage device according to the file directory table and the file location allocation table comprises:
controlling the controller to write data into a data area of a file planned in the storage device according to the file position configuration table,
wherein, a starting data area corresponding to the file in the file directory table is kept unchanged, and a data link relation corresponding to the file in the file location configuration table is kept unchanged.
7. The storage device control system of claim 6, wherein the file directory table for the storage device is configured to comprise:
and planning a file name corresponding to the file in the file directory table.
8. The storage device control system of claim 6, wherein the file directory table for the storage device is configured to comprise:
the initial data area corresponding to the file in the file directory table is planned.
9. The storage device control system of claim 6, wherein planning the file location allocation table of the storage device comprises:
planning the data link relation corresponding to the file in the file location configuration table.
10. The storage device control system of claim 7, wherein controlling the controller to write data to the storage device according to the file location allocation table and the file directory table comprises:
changing the file name corresponding to the file in the file directory table.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200511065A (en) * | 2003-09-03 | 2005-03-16 | Icp Electronics Inc | Method and system of managing files in intelligent network attached storage |
| CN101027651A (en) * | 2004-07-21 | 2007-08-29 | 桑迪士克股份有限公司 | FAT analysis for optimized sequential cluster management |
| TW200839773A (en) * | 2007-03-19 | 2008-10-01 | A Data Technology Co Ltd | Wear-leveling management and file distribution management of hybrid density memory |
| CN102124452A (en) * | 2008-08-17 | 2011-07-13 | 新叶股份有限公司 | Storage region management method, storage region allocation method and program |
| CN104636085A (en) * | 2015-01-27 | 2015-05-20 | 北京理工大学 | Storage management module in on-chip network message buffering area |
| CN106878589A (en) * | 2015-12-11 | 2017-06-20 | 环旭电子股份有限公司 | Drive recorder data loss protector and its method |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7983769B2 (en) * | 2004-11-23 | 2011-07-19 | Rockwell Automation Technologies, Inc. | Time stamped motion control network protocol that enables balanced single cycle timing and utilization of dynamic data structures |
| CN101908050B (en) * | 2009-06-03 | 2013-04-24 | 晨星软件研发(深圳)有限公司 | File format conversion method |
| CN101908049A (en) * | 2009-06-03 | 2010-12-08 | 晨星软件研发(深圳)有限公司 | File system and switching method thereof |
| TWI420305B (en) * | 2010-10-08 | 2013-12-21 | Phison Electronics Corp | Memory storage device, memory controller thereof, and method for creating fill-file automatically thereof |
-
2017
- 2017-07-28 CN CN201710628404.9A patent/CN109308267B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200511065A (en) * | 2003-09-03 | 2005-03-16 | Icp Electronics Inc | Method and system of managing files in intelligent network attached storage |
| CN101027651A (en) * | 2004-07-21 | 2007-08-29 | 桑迪士克股份有限公司 | FAT analysis for optimized sequential cluster management |
| TW200839773A (en) * | 2007-03-19 | 2008-10-01 | A Data Technology Co Ltd | Wear-leveling management and file distribution management of hybrid density memory |
| CN102124452A (en) * | 2008-08-17 | 2011-07-13 | 新叶股份有限公司 | Storage region management method, storage region allocation method and program |
| CN104636085A (en) * | 2015-01-27 | 2015-05-20 | 北京理工大学 | Storage management module in on-chip network message buffering area |
| CN106878589A (en) * | 2015-12-11 | 2017-06-20 | 环旭电子股份有限公司 | Drive recorder data loss protector and its method |
Non-Patent Citations (1)
| Title |
|---|
| 车辆导航系统的体系结构与路网模型;王海波;《中国优秀硕士学位论文全文数据库 信息科技辑》;20070315;I136-754 * |
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