CN110008179A - File memory method, automobile data recorder and readable storage medium storing program for executing - Google Patents
File memory method, automobile data recorder and readable storage medium storing program for executing Download PDFInfo
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- CN110008179A CN110008179A CN201910262672.2A CN201910262672A CN110008179A CN 110008179 A CN110008179 A CN 110008179A CN 201910262672 A CN201910262672 A CN 201910262672A CN 110008179 A CN110008179 A CN 110008179A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/10—File systems; File servers
- G06F16/13—File access structures, e.g. distributed indices
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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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
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Abstract
The invention discloses a kind of file memory methods of automobile data recorder, comprising steps of obtaining pre-recorded video size, and a file are selected from local storage, using the file size currently selected as the first memory capacity；First memory capacity and pre-recorded video size are subtracted each other, the first saved differences are obtained；When first saved differences are greater than 0, selected All Files are deleted, and create the predistribution file that size is first saved differences and the predistribution file that size is pre-recorded video size.The invention also discloses a kind of automobile data recorder and readable storage medium storing program for executing.The present invention can make full use of memory space when file stores, and will not generate fragmentation.
Description
Technical field
The present invention relates to the file memory method of mobile unit field more particularly to automobile data recorder, automobile data recorder and
Readable storage medium storing program for executing.
Background technique
Automobile data recorder is the audio recorded vehicle driving on the way, the instrument of video related data, the core of automobile data recorder
The heart is data storage, but since the data space of automobile data recorder is limited, when storage record video data reaches certain pre-
If the video data of trailer record can cover the video data recorded at first, and this data cover can generate a large amount of storages when value
Fragment causes waste of storage space, and will affect video record so as to cause unit exception.
Summary of the invention
File memory method, automobile data recorder and the readable storage medium storing program for executing of a kind of automobile data recorder proposed by the present invention, purport
The fragmentation generated when solving the problems, such as that automobile data recorder data store causes waste of storage space and video that can not record.
To achieve the above object, the present invention provides a kind of file memory method of automobile data recorder, and the method includes steps
It is rapid:
Pre-recorded video size is obtained, and selects a file from local storage, the file currently selected is big
It is small to be used as the first memory capacity；
First memory capacity and pre-recorded video size are subtracted each other, the first saved differences are obtained；
When first saved differences are greater than 0, selected All Files are deleted, and creates size and is deposited for described first
The predistribution file and size that store up difference are the predistribution file of pre-recorded video size.
Optionally, described that a file is selected from local storage, using the file size currently selected as first
The step of memory capacity includes:
It determines in local storage with the presence or absence of predistribution file；
If so, selecting a predistribution file from all predistribution files, and the predistribution file that will currently select
Size is as the first memory capacity；
If it is not, then selecting a recorded file from all recorded files, and the recorded file size currently selected is made
For the first memory capacity.
Optionally, described the step of first memory capacity is subtracted each other with pre-recorded video size, obtains the first saved differences
Later, further includes:
When there is predistribution file and the first saved differences less than 0 in local storage, all predistribution files are judged
In whether there is non-selected predistribution file；
When non-selected predistribution file is not present in all predistribution files, according to the recording text in local storage
Part and all predistribution files store pre-recorded video；
When in all predistribution files there are when non-selected predistribution file, from the continuous selection of all predistribution file relays
Next predistribution file, and the predistribution file size of selection is added in first memory capacity to update the first storage
Capacity, to execute step: the first memory capacity and pre-recorded video size being subtracted each other, the first saved differences are obtained.
Optionally, before the step of whether there is non-selected predistribution file in all predistribution files of judgement,
Further include:
When there is predistribution file and the first saved differences less than 0 in local storage, all predistribution files are judged
Whether the sum of size is greater than or equal to prerecording file size；
If so, thening follow the steps: judging in all predistribution files with the presence or absence of non-selected predistribution file；
If it is not, thening follow the steps: according in local storage recorded file and all predistribution files to prerecording regard
Frequency is stored.
Optionally, the recorded file according in local storage and all predistribution files carry out pre-recorded video
The step of storage includes:
A recorded file is selected from all recorded files, and by the recorded file size of selection and the first saved differences
It is added, obtains the second saved differences；
When second saved differences are greater than 0, all predistribution files and selected all recorded files are deleted,
And create the predistribution file that size is second saved differences and the predistribution file that size is pre-recorded video size.
Optionally, it is described from all recorded files select a recorded file, and by the recorded file size of selection with
After the step of first saved differences are added, and obtain the second saved differences, further includes:
When second saved differences are less than 0, continue to select next recorded file from all recorded files, and will
Second saved differences execute when the second saved differences are greater than 0 from the recorded file size for adding selection: deleting all pre- points
With file and selected all recorded files, and create predistribution file that size is second saved differences and big
The small predistribution file for pre-recorded video size.
Optionally, described the step of first memory capacity is subtracted each other with pre-recorded video size, obtains the first saved differences
Later, further includes:
When in local storage there is no file and the first saved differences is pre-allocated less than 0, from all recorded files
Continue to select next recorded file, and by the first saved differences from the recorded file size for adding selection, until the first storage is poor
It when value is greater than 0, executes: deleting selected All Files, and create the predistribution file that size is first saved differences
And size is the predistribution file of pre-recorded video size.
Optionally, before the step of acquisition pre-recorded video size, further includes:
Obtain the default recording duration and default recording resolution ratio of pre-recorded video；
Pre-recorded video size is calculated according to the default recording time and default resolution ratio of recording.
In addition, to achieve the above object, the present invention also provides a kind of automobile data recorder, the automobile data recorder includes: to deposit
Reservoir, processor and it is stored in the computer program that can be run on the memory and on the processor, the calculating
Machine program realizes the file memory method of automobile data recorder as described above when being executed by the processor.
In addition, to achieve the above object, the present invention also provides a kind of readable storage medium storing program for executing, being deposited on the readable storage medium storing program for executing
Computer program is contained, the computer program realizes the file storage of automobile data recorder as described above when being executed by processor
The step of method.
The present invention selects a file by obtaining pre-recorded video size from local storage, will currently select
The file size selected is as the first memory capacity；First memory capacity and pre-recorded video size are subtracted each other, the first storage is obtained
Difference；When first saved differences are greater than 0, selected All Files are deleted, and creating size is first storage
The predistribution file and size of difference are the predistribution file of pre-recorded video size.The present invention can solve fragmentation
Problem, and memory space is made full use of, it can avoid the waste of memory space.
Detailed description of the invention
Fig. 1 is the hardware structural diagram for the automobile data recorder that the embodiment of the present invention is related to；
Fig. 2 is the flow diagram of the file memory method first embodiment of automobile data recorder of the present invention；
Fig. 3 is the flow diagram of the 5th embodiment of file memory method of automobile data recorder of the present invention.
Specific embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
Fig. 1 is please referred to, Fig. 1 is the hardware structural diagram of automobile data recorder provided by the present invention.The driving recording
Instrument may include the components such as processor 10 and memory 20.In the automobile data recorder, the processor 10 respectively with institute
The connection of memory 20 is stated, is stored with computer program on the memory 20, the computer program is held by processor 10 simultaneously
Row, when the computer program executes the step of realization following methods embodiment.
Processor 10 is the control centre of automobile data recorder, utilizes various interfaces and the entire automobile data recorder of connection
Various pieces, by running or execute the software program and/or module that are stored in memory 20, and call and be stored in
Data in reservoir 20 execute the various functions and processing data of automobile data recorder, to carry out whole prison to automobile data recorder
Control.Processor 10 may include one or more processing units；Optionally, processor 10 can integrate application processor and modulation /demodulation
Processor, wherein the main processing operation system of application processor, user interface and application program etc., modem processor master
Handle wireless communication.It is understood that above-mentioned modem processor can not also be integrated into processor 10.
Memory 20 can be used for storing software program and various data.Memory 20 can mainly include storing program area
The storage data area and, wherein storing program area can application program needed for storage program area, at least one function (for example obtain
Take pre-recorded video size) etc.；Storage data area may include database, and storage data area can be stored is created according to using for system
Data or information for building etc..In addition, memory 20 may include high-speed random access memory, it can also include non-volatile deposit
Reservoir, for example, at least a disk memory, flush memory device or other volatile solid-state parts.
Although Fig. 1 is not shown, above-mentioned automobile data recorder can also include circuit control module, for connecting to power supply,
Guarantee the normal work of other component；It can also include communication module, can be connect by network with external communications equipment.Communicate mould
Block can receive the request of external communications equipment sending, can also send request, instruction and information to the external communications equipment.
The external communications equipment can be user terminal or other systems server etc..
It will be understood by those skilled in the art that automobile data recorder structure shown in Fig. 1 is not constituted to automobile data recorder
Restriction, may include perhaps combining certain components or different component layouts than illustrating more or fewer components.
Based on above-mentioned hardware configuration, each embodiment of the method for the present invention is proposed.
Referring to figure 2., Fig. 2 is the flow diagram of the file memory method first embodiment of automobile data recorder of the present invention,
In this embodiment, which comprises
Step S10 obtains pre-recorded video size, and a file is selected from local storage, will currently select
File size as the first memory capacity；
It include that predistribution file and/or non-predistribution file (are recorded in the local storage of the present embodiment automobile data recorder
File), it additionally may include other operating files or media file needed for automobile data recorder, it can be pre- in local storage
First creation predistribution file, predistribution file are the empty files of not stored data, and the available size of each predistribution file can be with
It is identical to can also be different, for example, creation size is the predistribution file of 60M；Predistribution file of different sizes can also be created；
Or the predistribution file of creation is also possible to the multiple of 60M, such as creation size is the more of 60M, 120M, 180M, 300M etc.
A predistribution file of different sizes.In addition, predistribution file size can also be with the pre-set prerecording of automobile data recorder
Video resolution and/or playing duration are related, for example, 1080P one minute play time pre-recorded video size be 120M,
The pre-recorded video size of one minute play time of 720P is 60M.
It should be noted that initial all predistribution files in automobile data recorder local storage, when predistribution file
After being stored in data, predistribution file type is changed into non-predistribution file type, and non-predistribution file is that stored recording has regarded
The file of frequency evidence can also be referred to as recorded file.Pre-recorded video is the video data that will be recorded, and can obtain prerecording
Video data size selects a file from local storage, and this document can be predistribution file or recorded file, will
The predistribution file or recorded file size selected is as the first memory capacity.It optionally, can also be by other media files
As file selectable in this secondary memory.
Step S20 subtracts each other the first memory capacity and pre-recorded video size, obtains the first saved differences；
By subtracting each other the first memory capacity and pre-recorded video size in the present embodiment, the first saved differences are obtained, are divided
It is pre- whether the size of predistribution file or the recorded file size of selection for analysing selection known to the first saved differences can satisfy
Recorded video size.
Step S30 deletes selected All Files, and create size as institute when first saved differences are greater than 0
The predistribution file and size of stating the first saved differences are the predistribution file of pre-recorded video size.
In the present embodiment when a file of selection, the difference of the file size and pre-recorded video size of selection is greater than
When 0, illustrate that the file size currently selected can satisfy pre-recorded video size, and there are also extra memory spaces.When depositing
In extra memory space, the file of the selection can be split, delete selected All Files first, will stored
Space releases, and creating predistribution file that size is the first saved differences and size is pre-recorded video size
Pre-allocate file, wherein can be used for storing other pre-recorded video data with the predistribution file that the first saved differences create；With
The predistribution file of pre-recorded video size creation is for storing the video data that will currently record.With saved differences creation
Predistribution file can also continue to thus avoid the waste of memory space for storing other pre-recorded video data, and
Fragmentation, which will not be generated, influences video record.
Further, the first embodiment of the file memory method based on automobile data recorder of the present invention proposes present invention driving
The second embodiment of the file memory method of recorder selects one in the present embodiment from local storage in step S10
File includes: using the file size currently selected as the step of the first memory capacity
Step S100 is determined in local storage with the presence or absence of predistribution file；If so, thening follow the steps S110；If it is not,
Then follow the steps S120.
Step S110 selects a predistribution file from all predistribution files, and the predistribution currently selected is literary
Part size is as the first memory capacity；
Step S120 selects a recorded file, and the recorded file size that will currently select from all recorded files
As the first memory capacity.
It is preferential to use predistribution file in the present embodiment middle rolling car recorder when storing video data.In video data
Before recording, the doubly linked list in local storage can be first traversed, predistribution file is searched.Wherein doubly linked list is that a kind of chain type is deposited
Storage structure, it can connect a series of memories not contacted, and can easily access its predecessor node and subsequent
Node.It include several file nodes in doubly linked list, when traversing doubly linked list every time since first file node, each
It is differentiated in file node comprising video record time, recording duration, recording in file type, file size, file name, file
Rate etc..Wherein file type is divided into predistribution file and non-predistribution file (recorded file), and file size refers to that file is available
Memory capacity size.
The doubly linked list in local storage is traversed in the present embodiment first, is determining that it is literary that local storage has predistribution
When part, a predistribution file is chosen from all predistribution files, doubly linked list can be traversed according to prerecording file size
Find the predistribution file for meeting current prerecording file size, usually from first file node begin stepping through until find with
The identical first predistribution file of prerecording file size, using the predistribution file selected as the first memory capacity；If
Predistribution file identical with prerecording file size is not found, can choose the first predistribution file traversed, by this
The predistribution file selected is as the first memory capacity.Or when selection pre-allocates file, directly select first traversed
A predistribution file, it is preferential using pre- when storing video data using the predistribution file selected as the first memory capacity
Distribution file can extend the holding time of recorded file.
The doubly linked list traversed in local storage in the present embodiment illustrates to pre-allocate when not finding predistribution file
File is used, and when determining local storage there is no file is pre-allocated, a recording is chosen from all recorded files
File can traverse doubly linked list according to prerecording file size and find the recorded file for meeting current prerecording file size,
Usually begin stepping through from first file node until finding first recorded file identical with prerecording file size, by this
The recorded file selected is as the first memory capacity, if not finding recorded file identical with prerecording file size, Ke Yixuan
First recorded file traversed is selected, using the recorded file selected as the first memory capacity.Or text is recorded in selection
When part, first recorded file traversed is directly selected, using the recorded file selected as the first memory capacity.Or
In all recorded files press one recorded file of the sequential selection of recording time from morning to night, using the recorded file selected as
First memory capacity, temporally sequential selection recorded file from morning to night can be by the video data of recording time relatively late
The time of preservation is more long.
Further, the second embodiment of the file memory method based on automobile data recorder of the present invention proposes present invention driving
The 3rd embodiment of the file memory method of recorder, in the present embodiment, after step S20, further includes:
Step S41 judges all pre- when there is predistribution file and the first saved differences less than 0 in local storage
It distributes and whether there is non-selected predistribution file in file；
Step S42, when non-selected predistribution file is not present in all predistribution files, according in local storage
Recorded file and all predistribution files pre-recorded video is stored；
Step S43, when in all predistribution files there are when non-selected predistribution file, from all predistribution files
Continue to select next predistribution file, and the predistribution file size of selection is added in first memory capacity to update
First memory capacity, to return to step S20.
In the present embodiment when in local storage exist predistribution file, and select predistribution file size with pre-record
When the first saved differences that video size processed is subtracted each other are less than 0, illustrate that the predistribution file size currently selected is not able to satisfy
Pre-recorded video size then needs to judge in all predistribution files with the presence or absence of non-selected predistribution file.When all pre-
When there is no non-selected predistribution file in distribution file, indicate that predistribution file all in current local storage is all selected
It selected, and is still unable to satisfy the requirement that the first saved differences are greater than 0 at this time, needed using recorded file, according to being locally stored
Recorded file in device and so predistribution file stores pre-recorded video data.
When having non-selected predistribution file in all predistribution files, indicate to still have in local storage at this time
The predistribution file of unselected mistake can traverse bi-directional list, and selection is currently after the predistribution affiliated file node of file
File is pre-allocated, and obtains the predistribution file size, which is added in the first memory capacity to update
Then first memory capacity executes step S20, to continue to analyze the first saved differences.
When there is predistribution file and the first saved differences less than 0 in local storage in the present embodiment, by judging
Have in predistribution file whether there are also non-selected predistribution files, when there are non-selected predistribution in all predistribution files
When file, continues to select next predistribution file, and the first memory capacity is added in the predistribution file size of selection, continue
Analyze the first saved differences.By analyzing the first saved differences, pre-record it is known that whether the file size of selection can satisfy
Video size processed.When non-selected predistribution file is not present in all predistribution files, illustrate not can be used pre-
Distribute file, can according in local storage recorded file and all predistribution files pre-recorded video is stored, it is logical
Cross the storage that recorded file and all predistribution files are combined and can satisfy pre-recorded video.
Further, judge in step S41 in all predistribution files with the presence or absence of the step of non-selected predistribution file
Before rapid, further includes:
Step S401 judges all pre- when there is predistribution file and the first saved differences less than 0 in local storage
Distribute whether the sum of file size is greater than or equal to prerecording file size；If: it thens follow the steps and judges all pre- points in S41
With the step of whether there is non-selected predistribution file in file；If not: thening follow the steps in S42 according in local storage
Recorded file and all predistribution files the step of pre-recorded video is stored.
In the present embodiment when there is predistribution file and the first saved differences less than 0 in local storage, can first it sentence
Whether the sum of all predistribution file sizes of breaking meet prerecording file size, if all predistribution file sizes are greater than or equal to
Pre-recorded video file size, pre-recorded video data can be stored by only using predistribution file；If all predistribution files
Size is less than pre-recorded video size, needs using all predistribution files and part recorded file storage pre-recorded video number
According to.It is preferential to reuse record when the predistribution file that not can be used using predistribution file in video data storage
File processed can make the holding time of recorded file more long.Furthermore by carrying out all pre-allocating the sum of file in advance
Compare, saved the time compared, improves the division speed of file storage.
In the present embodiment when there is predistribution file in local storage and the first saved differences are equal to 0, illustrate to select
Predistribution file size be equal to pre-recorded video size, the predistribution file size currently selected just can satisfy prerecording
Video size directly can store pre-recorded video data using the predistribution file of selection.
Further, after step S20, further includes:
S201, when in local storage there is no file and the first saved differences is pre-allocated less than 0, from all recordings texts
Continue to select next recorded file in part, and by the first saved differences from plus selection recorded file size, deposit until first
It when storing up difference greater than 0, executes in step S30 and deletes selected All Files, and creating size is first saved differences
Predistribution file and size be pre-recorded video size predistribution file the step of.
It, can be from all records when there is no when predistribution file, then using recorded file in local storage in the present embodiment
A recorded file is selected by preset rules in file processed, it is preferable that can be selected according to the sequence of recording time from morning to night
Select, in addition it is also possible to according to from evening to early or at random selected, later can by selected recorded file size in advance
Recorded file size subtracts each other to obtain the first saved differences, when the first saved differences are less than 0, continues to select from all recorded files
Next recorded file is selected, then according to the first saved differences of next update of selection, carries out the judgement of the first saved differences,
When the first saved differences are greater than 0, all predistribution files and selected all recorded files are deleted, and create size
Predistribution file and size for second saved differences are the predistribution file of pre-recorded video size.The size of creation
It can be used for storing other pre-recorded video data for the predistribution file of second saved differences, the size of creation is prerecording
The predistribution file of video size can be used for storing the video data that will currently record, by creating new predistribution file not
It only can store pre-recorded video data, and extra memory space released and is used to store other pre-recorded videos, avoid
The waste of memory space, and fragmentation will not be generated influence video record.
Further, the 3rd embodiment of the file memory method based on automobile data recorder of the present invention proposes present invention driving
The fourth embodiment of the file memory method of recorder, in the present embodiment, according to the recording in local storage in step S42
The step of file and all predistribution files store pre-recorded video include:
Step S421: selecting a recorded file from all recorded files, and by the recorded file size of selection and the
One saved differences are added, and obtain the second saved differences；
Step S422: when second saved differences are greater than 0, all predistribution files and selected all are deleted
Recorded file, and creating predistribution file that size is second saved differences and size is the pre- of pre-recorded video size
Distribute file.
In the present embodiment when the sum of all predistribution file storage sizes are not able to satisfy pre-recorded video data, need to make
It include recording time and file size etc. in each recorded file with part recorded file, it can be from all recorded files
A recorded file is selected referring to above-described embodiment, such as is selected by the sequence of recording time from morning to night, by the recording text of selection
Part size is added with the first saved differences, available second saved differences.The second saved differences are analyzed, when the second saved differences
When greater than 0, all predistribution files and selected all recorded files can be deleted, and creating size is the second storage
The predistribution file and size of difference are the predistribution file of pre-recorded video size, wherein creation size is that the second storage is poor
The predistribution file of value can be used for storing other pre-recorded video data, and creation size is the predistribution text of pre-recorded video size
Part can be used for storing the currently video data by recording.It not only can be that can store to pre-record by creating new predistribution file
Video data processed, and extra memory space is released and is used to store other pre-recorded videos, avoid the wave of memory space
Take, and fragmentation will not be generated to influence video record.
Further, after step S421, further includes:
Step S423 continues to select next recording from all recorded files when second saved differences are less than 0
File, and the second saved differences are executed into deletion when the second saved differences are greater than 0 from the recorded file size for adding selection
All predistribution files and selected all recorded files, and create the predistribution text that size is second saved differences
Part and size are the predistribution file of pre-recorded video size.
In the present embodiment when the second saved differences are less than 0, illustrate first recorded file size of selection with it is all pre-
The sum of distribution file size is not able to satisfy pre-recorded video size of data, it is preferable that when can press recording in all recorded files
Between sequence from morning to night continue to select next recorded file, by the recorded file size of the selection and the second saved differences phase
Add, when the second saved differences are greater than 0, deletes all predistribution files and selected all recorded files, and create
Size be second saved differences predistribution file and size be pre-recorded video size predistribution file.Wherein create
Building the predistribution file that size is the second saved differences can be used for storing other pre-recorded video data, and creation size is prerecording
The predistribution file of video size can be used for storing the currently video data by recording.By creating new predistribution file not only
It can be that can store pre-recorded video data, and extra memory space is released and is used to store other pre-recorded videos,
The waste of memory space is avoided, and fragmentation will not be generated to influence video record.
Further, after step S421, further includes:
When the second saved differences are equal to 0, all predistribution files and selected all recorded files are deleted, and create
Build the predistribution file that size is pre-recorded video size.
When the sum of all predistribution file sizes and selected recorded file size are equal to prerecording text in the present embodiment
Part size illustrates that the size of all predistribution files and selected recorded file is just met for pre-recorded video data, deletes
All predistribution files and selected all recorded files, and the predistribution file that size is pre-recorded video size is created,
For storing pre-recorded video data.
Further, referring to figure 3., the first embodiment of the file memory method based on automobile data recorder of the present invention proposes
5th embodiment of the file memory method of automobile data recorder of the present invention, in the present embodiment, before step S10, further includes:
Step S101 obtains the default recording duration and default recording resolution ratio of pre-recorded video；
Step S102 calculates pre-recorded video size according to the default recording time and default resolution ratio of recording.
The present embodiment middle rolling car recorder can preset recording time and record resolution ratio, and recording duration may be configured as
1min, 3min, 5min etc., recording resolution ratio may be configured as 720P, 1080P etc..Same resolution ratio difference records duration institute
The memory space accounted for is directly proportional to duration is recorded, for example, being set as 1min for duration is recorded, records resolution ratio and is set as 720P,
The memory space for recording the video data occupancy of 1min, 720P is up to 60M；Record the video data occupancy of 3min, 720P
Memory space is up to 180M；The memory space for recording the video data occupancy of 5min, 720P is up to 300M.When same recording
The memory space that long resolution ratio 1080P is occupied is twice of resolution ratio 720P, such as is set as 1min for duration is recorded, and records and divides
Resolution is set as 1080P, and the memory space for recording the video data occupancy of 1min, 1080P is up to 120M；Recording 3min,
The memory space that the video data of 1080P occupies is up to 360M；Record the memory space that the video data of 5min, 1080P occupy
It is up to 600M.Pre-recorded video can be calculated by obtaining the pre-set recording duration of automobile data recorder and recording resolution ratio
Size of data, by obtaining pre-recorded video size of data, the video data for that will store finds suitable storage location.
The present invention also proposes a kind of computer readable storage medium, is stored thereon with computer program.The computer can
Reading storage medium can be the memory in the terminal of Fig. 1, be also possible to such as ROM (Read-Only Memory, read-only storage
Device)/RAM (Random Access Memory, random access memory), magnetic disk, at least one of CD, the computer
Readable storage medium storing program for executing includes that some instructions are used so that a terminal device with processor (can be mobile phone, computer, clothes
Business device, terminal or the network equipment etc.) execute method described in each embodiment of the present invention.
In the present invention, term " first " " second " " third " " the 4th " " the 5th " is only used for the purpose of description, and cannot
It is interpreted as indication or suggestion relative importance, for the ordinary skill in the art, can be understood as the case may be
The concrete meaning of above-mentioned term in the present invention.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
Although the embodiments of the present invention has been shown and described above, the scope of protection of the invention is not limited thereto,
It is understood that above-described embodiment is exemplary, it is not considered as limiting the invention, the ordinary skill people of this field
Member can be changed above-described embodiment, modify and replace within the scope of the invention, these variations, modification and replacement are all answered
It is included within the scope of the present invention.Therefore, protection scope of the present invention should be subject to the protection scope of claim.
Claims (10)
1. a kind of file memory method of automobile data recorder, which is characterized in that the method includes the steps:
Pre-recorded video size is obtained, and selects a file from local storage, the file size currently selected is made
For the first memory capacity；
First memory capacity and pre-recorded video size are subtracted each other, the first saved differences are obtained；
When first saved differences are greater than 0, selected All Files are deleted, and creating size is that first storage is poor
The predistribution file and size of value are the predistribution file of pre-recorded video size.
2. the file memory method of automobile data recorder as described in claim 1, which is characterized in that described from local storage
A file is selected, includes: using the file size currently selected as the step of the first memory capacity
It determines in local storage with the presence or absence of predistribution file；
If so, selecting a predistribution file from all predistribution files, and the predistribution file size that will currently select
As the first memory capacity；
If it is not, then selecting a recorded file from all recorded files, and using the recorded file size currently selected as the
One memory capacity.
3. the file memory method of automobile data recorder as claimed in claim 2, which is characterized in that described by the first memory capacity
After the step of subtracting each other with pre-recorded video size, obtain the first saved differences, further includes:
When in local storage exist predistribution file and the first saved differences less than 0 when, judge be in all predistribution files
It is no that there are non-selected predistribution files；
When in all predistribution files be not present non-selected predistribution file when, according in local storage recorded file and
All predistribution files store pre-recorded video；
When in all predistribution files there are when non-selected predistribution file, it is next from the continuous selection of all predistribution file relays
A predistribution file, and the predistribution file size of selection is added in first memory capacity to update the first storage and hold
Amount, to execute step: the first memory capacity and pre-recorded video size being subtracted each other, the first saved differences are obtained.
4. the file memory method of automobile data recorder as claimed in claim 3, which is characterized in that all predistribution of judgement
Before the step of whether there is non-selected predistribution file in file, further includes:
When there is predistribution file and the first saved differences less than 0 in local storage, all predistribution file sizes are judged
The sum of whether be greater than or equal to prerecording file size；
If so, thening follow the steps: judging in all predistribution files with the presence or absence of non-selected predistribution file；
If it is not, thening follow the steps: according in local storage recorded file and all predistribution files to pre-recorded video into
Row storage.
5. the file memory method of automobile data recorder as described in claim 3 or 4, which is characterized in that described to be deposited according to local
The step of recorded file and all predistribution files in reservoir store pre-recorded video include:
A recorded file is selected from all recorded files, and by the recorded file size of selection and the first saved differences phase
Add, obtains the second saved differences；
When second saved differences are greater than 0, all predistribution files and selected all recorded files are deleted, and create
Build the predistribution file that size is second saved differences and the predistribution file that size is pre-recorded video size.
6. the file memory method of automobile data recorder as claimed in claim 5, which is characterized in that described from all recorded files
One recorded file of middle selection, and the recorded file size of selection is added with the first saved differences, obtain the second saved differences
The step of after, further includes:
When second saved differences are less than 0, continue to select next recorded file from all recorded files, and by second
Saved differences execute when the second saved differences are greater than 0 from the recorded file size for adding selection: deleting all predistribution texts
Part and selected all recorded files, and create predistribution file that size is second saved differences and size is
The predistribution file of pre-recorded video size.
7. the file memory method of automobile data recorder as claimed in claim 2, which is characterized in that described by the first memory capacity
After the step of subtracting each other with pre-recorded video size, obtain the first saved differences, further includes:
When in local storage there is no file and the first saved differences is pre-allocated less than 0, continue from all recorded files
Next recorded file is selected, and by the first saved differences from the recorded file size for adding selection, until the first saved differences are big
When 0, execute: delete selected All Files, and create size be first saved differences predistribution file and
Size is the predistribution file of pre-recorded video size.
8. such as the file memory method of the described in any item automobile data recorders in claim 1-4,6,7, which is characterized in that described to obtain
Before the step of taking pre-recorded video size, further includes:
Obtain the default recording duration and default recording resolution ratio of pre-recorded video；
Pre-recorded video size is calculated according to the default recording time and default resolution ratio of recording.
9. a kind of automobile data recorder, which is characterized in that the automobile data recorder includes: memory, processor and is stored in institute
The computer program that can be run on memory and on the processor is stated, when the computer program is executed by the processor
The step of realizing the file memory method such as the described in any item automobile data recorders of claim 1-8.
10. a kind of readable storage medium storing program for executing, which is characterized in that be stored with computer program, the meter on the readable storage medium storing program for executing
The file memory method such as automobile data recorder of any of claims 1-8 is realized when calculation machine program is executed by processor
The step of.
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| CN201910262672.2A CN110008179B (en) | 2019-04-02 | 2019-04-02 | File storage method, automobile data recorder and readable storage medium |
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| CN201910262672.2A CN110008179B (en) | 2019-04-02 | 2019-04-02 | File storage method, automobile data recorder and readable storage medium |
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