CN107248206A - A kind of method of quick obtaining DVR video recordings track - Google Patents
A kind of method of quick obtaining DVR video recordings track Download PDFInfo
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- CN107248206A CN107248206A CN201710528649.4A CN201710528649A CN107248206A CN 107248206 A CN107248206 A CN 107248206A CN 201710528649 A CN201710528649 A CN 201710528649A CN 107248206 A CN107248206 A CN 107248206A
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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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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/70—Information retrieval; Database structures therefor; File system structures therefor of video data
- G06F16/78—Retrieval characterised by using metadata, e.g. metadata not derived from the content or metadata generated manually
- G06F16/7867—Retrieval characterised by using metadata, e.g. metadata not derived from the content or metadata generated manually using information manually generated, e.g. tags, keywords, comments, title and artist information, manually generated time, location and usage information, user ratings
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
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- Engineering & Computer Science (AREA)
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
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- Studio Devices (AREA)
- Television Signal Processing For Recording (AREA)
Abstract
The invention discloses a kind of method of quick obtaining DVR video recordings track, connected between mobile phone app ends and drive recorder by WIFI, obtain DVR video recordings track, and in mobile phone app ends display video recording track.The present invention is optimized on the basis of traditional GPS track is shown, GPS information, g sensor information and temporal information are individually preserved into info files corresponding with video files, all information of quick obtaining can be realized, the quick display track on APP, and newly-increased track seek functions, greatly improve Consumer's Experience.
Description
Technical field
The present invention relates to vehicle electronics product field, and in particular to a kind of method of quick obtaining DVR video recordings track.
Background technology
Normal conventional DVR is only to carry out driving video record, for preserving the view data in driving conditions, so as to thing
Therefore the state before accident is checked afterwards, Certain local policies confirm that DVR image datas can be used as legal argument.But only remember
To have be limitation to record travelling image, and after particularly the time slightly grows, victim can not may accurately remember the tool for occurring accident
Body place, makes troubles to the evidence obtaining of other evidences.
So on some high-end DVR, having had increase GPS modules, for obtaining latitude and longitude coordinates information, so may be used
Geographical position during image recording is obtained while image is checked with user.
Existing most of DVR are only to carry out video record, do not record co-ordinate position information.A small number of DVR have increase GPS
Module, but be only the longitude and latitude or velocity information for obtaining GPS, it is shown on video, ordinary consumer checks video, and
It can not accurately, intuitively know the corresponding place of this longitude and latitude, place is shown, it is necessary to by longitude and latitude if necessary to intuitively obtain
Information is input on special map, can just navigate to particular location.This way can substantially meet user and check video record
The demand in place, but have following several open defects：
1. operation is comparatively laborious；
2. it is directly perceived；
3. the complete running orbits of DVR can not be shown, only point shows changing coordinates, it is impossible to be linked to be trajectory.
For drawbacks described above, present fewer companies have developed the player at special PC ends, can play containing GPS letters
The video of breath, and show on map corresponding track.Its general principle is：When video recording, by GPS latitude and longitude information
It is written to as similar caption data is the same according to specific rule inside video file, when computer is played, according to spy
Fixed rule, searches correspondence GPS track information in video file data.Get after trace information, call computer end
Map, corresponding gps coordinate point is depicted, and is linked to be track shows.This player can solve to appeal defect, still
The consumer demand that just increasingly improves and say, can not perfectly meet customer need, be primarily present following deficiency：
1. video, which needs to play on computers, could show track.
Common consumer, DVR is that onboard, some special DVR are not portable, are integrally fixed on automobile, such as
Fruit will check that video file is very cumbersome on computers.In addition, if there is accident, outdoor checks that video can not then show rail
Mark.
2. this is only only capable of displaying the track for the file played, playing video file can not show any track letter
Breath.
3. this way is only only capable of displaying after current file track, switching file, then track is emptied, and whole driving conditions
The middle possible time is long, is the wheelpath of multiple video file compositions, causes that the track of whole driving conditions can not be shown.
4. it is long to obtain trajectory time.Video is while track could be shown by playing, if video is than larger, computer performance
Not enough, then show that trajectory time is longer.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of method of quick obtaining DVR video recordings track, solve mobile phone
APP ends, after being connected between drive recorder by WIFI, quick obtaining DVR video recordings track, in APP ends show map.
The present invention is achieved through the following technical solutions：A kind of method of quick obtaining DVR video recordings track, mobile phone
Connected between app ends and drive recorder by WIFI, obtain DVR video recordings track, and in mobile phone app ends display video recording track,
Specific method is as follows：
（One）The data message of GPS receiver is saved in a single info file, wherein data message is driving
Time, longitude, latitude, the such essential information of speed and direction, and consider that one of drive recorder function can provide collision
Evidence, the acceleration of three axles in machine in Gsensor also preserves in the lump；
（Two）GPS information, g-sensor information and temporal information are individually preserved into info files corresponding with video files；
（Three）Each second, which extracts the information that info files need, during video recording writes info files, records and terminates to preserve correspondence
The info files of video file name；
（Four）As long as individually reading the fileinfo in info on external equipment, it can just be realized DVR electronically according to information
Positioning on figure.
As preferred technical scheme, Info file names and video file names are corresponded, and so have preliminary pass
Connection；Obtain and more closely associate, it is necessary to which the document time of file content, specifically info needs the time one with video files
One correspondence.
As preferred technical scheme, ancient deed is deleted in drive recorder circulation, and while ancient deed is deleted, is deleted
Corresponding info files.
As preferred technical scheme, info files and video files are required for supporting seek functions.
As preferred technical scheme, the data format of info files is：RTC time, latitude, longitude, alignment quality, make
Number of satellite, height, speed, direction and 3-axis acceleration sensing numerical value.
As preferred technical scheme, gps data information is the extra large standard information NMEA formulated with electronic equipment of standard
0183, using independent related ASCII fromat, select to export with interval per second, meet the sentence of the demand of info file formats
For $ GPRMC and $ GPGGA sentences.
The beneficial effects of the invention are as follows：The present invention is optimized on the basis of traditional GPS track is shown, GPS is believed
Breath, g-sensor information and temporal information individually preserve into info files corresponding with video files, it is possible to achieve quick obtaining
All information, the quick display track on APP, and newly-increased track seek functions, greatly improve Consumer's Experience.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is fundamental diagram of the invention.
Embodiment
All features disclosed in this specification, or disclosed all methods or during the step of, except mutually exclusive
Feature and/or step beyond, can combine in any way.
This specification（Including any accessory claim, summary and accompanying drawing）Disclosed in any feature, except non-specifically is chatted
State, can alternative features equivalent by other or with similar purpose replaced.I.e., unless specifically stated otherwise, each feature
It is an example in a series of equivalent or similar characteristics.
As shown in figure 1,（One）The data message of GPS receiver is saved in a single info file, wherein counting
It is believed that breath for driving time, longitude, latitude, the such essential information of speed and direction, and consider drive recorder function it
One acceleration that can provide three axles in Gsensor in the evidence of collision, machine is also preserved in the lump；（Two）GPS is believed
Breath, g-sensor information and temporal information individually preserve into info files corresponding with video files；（Three）Each second during video recording
The information that info files need is extracted and writes info files, the info texts for terminating to preserve correspondence video file name are recorded
Part；（Four）As long as individually reading the fileinfo in info on external equipment, it can just be realized DVR in electronic map according to information
On positioning.
Wherein, Info file names and video file names will be corresponded, and so have preliminary association, closer
Association, it is necessary to file content, specifically info document time need and video files time correspond, this is APP
Parse the reference frame of data.
It is that ancient deed is deleted in circulation because DVR is when usually working, so, it is necessary to delete pair while file is deleted
The info files answered, it is ensured that first requirement.
When playing, info files and video files are required for supporting seek functions, when user is clicked on track
, it is necessary to which video time according to corresponding to corresponding trajectory coordinates calculate this coordinate, then jumps directly to info texts during coordinate
The correspondence position of part and video files is played out.
In order to preferably explain the data format of Info files, the data format of Info files is listed in detail below：
The data format for defining Info files is as follows：
<1>:RTC time, form is yyyyMMdd_hh:mm:ss.sss.For example, 20170301_16:01:15.220；
<2>:Latitude (Latitude), fractional value.For example, 47.5931258；
<3>:Longitude (Longitude), fractional value.For example, -122.3172914；
<4>:Alignment quality, integer value.0 represents invalid positioning, and 1 represents effectively positioning；
<5>:The number of satellite used, integer value；
<6>:Altitude (height), unit is rice, fractional value.For example, 12.5.Represent that height is 12.5 meters；
<7>:Speed, fractional value, unit is km/h；
<8>:Direction, fractional value (000.0-359.9 degree), unit degree of being, using geographical north as reference data；
<9>:GSENSOR x-axis acceleration, unit is m/s2；
<10>:GSENSOR y-axis acceleration, unit is m/s2；
<11>:GSENSOR z-axis acceleration, unit is m/s2.
Wherein sentence $ GPRMC include latitude, the purpose of longitude, speed（Knot）, direction of motion angle, year, the moon, when, point, the second,
Millisecond, location data is effective or invalid, and other important informations.Sentence format is as follows：
$GPRMC,hhmmss.ss,A,llll.llll,a,yyyyy.yyyy,a,x.x,x.x,ddmmyy,x.x,a,a*hh<CR>
<LF>
<1>：Local time（RTC）.Hour Minute Second.
<2>：Positioning states." A " or " V ", " A " positioning is effective, " V " positioning is invalid.
<3>：Latitude data.
<4>：Latitude direction, " N " or " S ".
<5>：Longitude data.
<6>：Longitudinal, is " E " or " W ".
<7>：Ground speed.
<8>：Ground course, using geographical north as reference data, along clockwise direction to the angle in course.
<9>：Period, day month year.
<10>：Magnetic declination.
<11>：Magnetic biasing angular direction, is " E " or " W ".
<12>：Pattern instruction, " A "/" D "/" E "/" N ", " A "=autonomous positioning, " D "=difference, " E "=estimation, " N "=number
According to invalid.
<13>：Verification and.
Sentence $ GPGGA include latitude, the purpose of longitude, speed（Knot）, direction of motion angle, year, the moon, when, point, second, milli
Second, location data is effective or invalid, and other important informations.Sentence format is as follows：
$GPRMC,hhmmss.ss,A,llll.llll,a,yyyyy.yyyy,a,x.x,x.x,ddmmyy,x.x,a,a*hh<CR>
<LF>
<1>：Local time（RTC）.Hour Minute Second.
<2>：Latitude data.
<3>：Latitude direction, " N " or " S ".
<4>：Longitude data.
<5>：Longitudinal, is " E " or " W ".
<6>：Positioning states." A " or " V ", " A " positioning is effective, " V " positioning is invalid.
<7>：The satellite number of positioning.
<8>：HDOP values.
<9>：Antenna geodetic height.
<10>：Antenna geodetic height unit.
<11>：Height anomaly（CGS2000）.
<12>：Height anomaly unit.
<13>：Differential data age.
<14>：Difference platform ID.
<15>：Verification and.
Find out that this two groups data has met info files from the data format of $ GPRMC and $ GPGGA sentences above
The demand of form.
Each second, which extracts the information that info files need, during video recording writes info files, records and terminates to preserve correspondence
The info files of video file name., just can be with according to information as long as individually reading the fileinfo in info in other equipment
Realize the positioning of DVR on the electronic map.
Although the info files and video of DVR generations are independent, their filename is one-to-one, is
Extension name is different, and file size maximum 50kb, the video file relative to hundreds of M is much smaller, and app is in the very short time
In can just read multiple info fileinfos, the positioning of DVR on the electronic map can be just realized according to the information of reading,
All be located by connecting just forms the complete tracks of DVR.
Performance comparison data are shown in Table 1（WIFI transmission speeds are using present DVR general speeds 3MB/s as normative reference）：
Table 1
General DVR standard configurations are 32G cards, can about preserve the video file of 100 three minutes durations, in terms of data above, such as
Fruit will show whole tracks, and traditional method needs about 2.7 hours, but improved method only needs to about 500 milliseconds, and
And this is the time for calculating transmission file, in actual use, mobile phone terminal also needs to decode GPS information could be on map
It has been shown that, and the efficiency of decoding video file and decoding info files has obvious difference, so in practice, improved method can compare
The effect of optimization that icon is shown becomes apparent from.
The beneficial effects of the invention are as follows：The present invention is optimized on the basis of traditional GPS track is shown, GPS is believed
Breath, g-sensor information and temporal information individually preserve into info files corresponding with video files, it is possible to achieve quick obtaining
All information, the quick display track on APP, and newly-increased track seek functions, greatly improve Consumer's Experience.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
The change or replacement expected without creative work, should all be included within the scope of the present invention.Therefore, it is of the invention
Protection domain should be determined by the scope of protection defined in the claims.
Claims (6)
- A kind of method of track 1. quick obtaining DVR records a video, it is characterised in that：Pass through between mobile phone app ends and drive recorder WIFI connections, obtain DVR video recordings track, and in mobile phone app ends display video recording track, specific method is as follows：（One）The data message of GPS receiver is saved in a single info file, wherein data message is driving Time, longitude, latitude, the such essential information of speed and direction, and consider that one of drive recorder function can provide collision Evidence, the acceleration of three axles in machine in Gsensor also preserves in the lump；（Two）GPS information, g-sensor information and temporal information are individually preserved into info files corresponding with video files；（Three）Each second, which extracts the information that info files need, during video recording writes info files, records and terminates to preserve correspondence The info files of video file name；（Four）As long as individually reading the fileinfo in info on external equipment, it can just be realized DVR electronically according to information Positioning on figure.
- The method of track 2. quick obtaining DVR as claimed in claim 1 records a video, it is characterised in that：Info file names and Video file names are corresponded, and so have preliminary association；Obtain and more closely associate, it is necessary to which file content, is specifically Info document time needs and the time of video files corresponds.
- The method of track 3. quick obtaining DVR as claimed in claim 1 records a video, it is characterised in that：Drive recorder circulation is deleted Except ancient deed, and while ancient deed is deleted, delete corresponding info files.
- The method of track 4. quick obtaining DVR as claimed in claim 1 records a video, it is characterised in that：Info files and video texts Part is required for supporting seek functions.
- The method of track 5. quick obtaining DVR as claimed in claim 1 records a video, it is characterised in that：The data lattice of info files Formula is：RTC time, latitude, longitude, alignment quality, the number of satellite used, height, speed, direction and 3-axis acceleration are passed Feel numerical value.
- The method of track 6. quick obtaining DVR as claimed in claim 1 records a video, it is characterised in that：Gps data information is mark The standard information NMEA 0183 that accurate sea is formulated with electronic equipment, using independent related ASCII fromat, is selected with interval per second Output is selected, the sentence for meeting the demand of info file formats is $ GPRMC and $ GPGGA sentences.
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Cited By (1)
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