CN108632571A - Operation method of digital video recording system - Google Patents
Operation method of digital video recording system Download PDFInfo
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- CN108632571A CN108632571A CN201710322376.8A CN201710322376A CN108632571A CN 108632571 A CN108632571 A CN 108632571A CN 201710322376 A CN201710322376 A CN 201710322376A CN 108632571 A CN108632571 A CN 108632571A
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- digital camera
- camera device
- control terminal
- modulation frequency
- registration signal
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- 238000000034 method Methods 0.000 title claims description 20
- 230000005540 biological transmission Effects 0.000 claims abstract description 58
- 238000011017 operating method Methods 0.000 claims description 13
- 238000010586 diagram Methods 0.000 description 6
- 230000008859 change Effects 0.000 description 5
- 238000012544 monitoring process Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
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- 238000003860 storage Methods 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
- H04N7/181—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a plurality of remote sources
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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
- H04N5/765—Interface circuits between an apparatus for recording and another apparatus
- H04N5/77—Interface circuits between an apparatus for recording and another apparatus between a recording apparatus and a television camera
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Studio Devices (AREA)
Abstract
The invention discloses a digital video recording system, which comprises a control end, a plurality of digital camera devices and a transmission medium. The control end broadcasts a setting instruction to the digital camera device through the transmission medium so as to enable the digital camera device to enter a connection mode. In the connection mode, each digital camera device continuously sends a registration signal to the control terminal within a random time after repeatedly standing by for a random time. When the first digital camera device transmits the first registration signal and other digital camera devices are in standby, the control end mediates the first registration signal to obtain a first registration number corresponding to the first digital camera device. The control end transmits the modulation frequency corresponding to the first digital camera device. Therefore, the digital video recording system can automatically allocate the digital camera in the digital video recording system to different modulation frequencies without presetting.
Description
Technical field
The invention relates to a kind of digital video recording system, especially a kind of number that can distribute modulation frequency automatically
Word video recording system.
Background technology
Since monitor can monitor the image of locality for a long time, therefore, it has become maintaining public order now and
The commonly used equipment of personal effects safety.However the monitoring range of every monitor is limited, therefore in the range of required monitoring
When wider, it is necessary to more monitors.In order to facilitate management, the prior art is often by single maincenter recording apparatus come concentrate tube
Each monitor is managed, and chooses whether the presentation content captured by storage particular watcher.
Fig. 1 is the schematic diagram of the surveillance video system 100 of the prior art.In Fig. 1, maincenter recording apparatus 110 is coupled to N
Platform monitor 120, N are positive integer.Since monitor 120 is to transmit presentation content, each monitoring by analog signal
Device 120 must transmit presentation content by independent transmission line, and maincenter recording apparatus 110 can pass through N transmission lines and each
120 phase of monitor couples.That is, with the increase of 120 quantity of monitor, the circuit of surveillance video system 100 can also become
Must be more complicated, the difficulty of erection construction is not only caused, the inconvenience in management service is also often resulted in.
Although also thering is the prior art to pass through digital signal to transmit presentation content, and make list by the technology of frequency modulating
One transmission can be transmitted the presentation content of more monitors online, however in order to ensure being coupled to every prison of same transmission lines
Visual organ can transmit signal to avoid interfering with each other using different modulation frequencies, not only so that setting becomes complicated, can also make
At using and managerial inconvenience.
Invention content
The embodiment of the present invention provides a kind of operating method of digital video recording system.Digital video recording system includes
Control terminal, multiple digital camera devices and transmission medium, transmission medium are coupled to control terminal and multiple digital camera devices.
The operating method of digital video recording system includes：Control terminal instructs at most number via transmission medium broadcast setting
Word photographic device, when receiving setting instruction, multiple digital camera devices enter connection mode, in the connection mode, each
Digital camera device repeats after standby random stand-by time, and registration signal is sent via transmission medium according to initial modulation frequency
To control terminal, and the random registion time of registration signal is persistently sent, registration signal includes the accession designation number of digital camera device.
When the first digital camera device in multiple digital camera devices via transmission medium transmit the first registration signal, and
Other digital camera devices in multiple digital camera devices other than the first digital camera device are all when standby, control terminal
The first registration signal is reconciled to obtain the first accession designation number corresponding to the first digital camera device using initial modulation frequency, is controlled
End processed according to the first accession designation number via transmission medium transmission corresponding to the first digital camera device the first modulation frequency to the
One digital camera device, the first modulation frequency are different with initial modulation frequency.Control terminal records the first modulation frequency and the first note
Correspondence between volume number, when the first digital camera device receives the first modulation frequency, the first digital camera device
Change and is reconciling the first registration letter using the first modulation frequency to send the first registration signal and control terminal according to the first modulation frequency
After number, sends connection and complete instruction to the first digital camera device so that the first digital camera device is disconnected pattern.
Description of the drawings
Fig. 1 is the schematic diagram of the digital video recording system of the prior art.
Fig. 2 is the schematic diagram of the digital video recording system of one embodiment of the invention.
Fig. 3 is the flow chart of the digital video recording system of Fig. 1.
Fig. 4 is that the digital camera device of Fig. 1 sends the schematic diagram of registration signal in the connection mode.
Wherein, the reference numerals are as follows：
100 surveillance video systems
110 maincenter recording apparatus
120 monitors
200 digital video recording systems
210 control terminals
2201To 220NDigital camera device
230 transmission mediums
300 methods
S310 is to S390 steps
T1, T2, T3 period
SIGR1To SIGRNRegistration signal
Specific implementation mode
Fig. 2 is the schematic diagram of the digital video recording system 200 of one embodiment of the invention.Digital video recording system 200
Including control terminal 210, N number of digital camera device 2201To 220NAnd transmission medium 230.Control terminal 210 can be via transmission medium
230 are coupled to N number of digital camera device 2201To 220N, N is the integer more than 1.Control terminal 210 may be, for example, digitally recorded video
Camera (Digital Video Recorder, DVR), and digital camera device 220 can be controlled by transmission medium 2301To 220N
The functions such as recorded a video and played, in the section Example of the present invention, control terminal 210 may also include display screen to show number
Word photographic device 2201To 220NAcquired presentation content.Transmission medium 230 can be such as, but not limited to coaxial cable, twisted wire or
Wireless network.
In fig. 2, digital camera device 2201、2202And 2203The circuit that part can be shared is coupled to transmission medium 230,
And digital camera device 2204To 220NIt then can be via independent connection to transmission medium 230.However the present invention is not with this
It is limited, in other embodiments of the invention, digital camera device 2201To 220NIt may also be according to actual demand with others
Mode is connected to transmission medium 230.
Due to digital camera device 2201To 220NIt is the presentation content exported in the form of digital signal acquired by it, because
This is in each digital camera device 2201To 220NIn the case of all carrying out modulation its digital output signal with different modulation frequencies,
Digital camera device 2201To 220NDigital signal can be sent out to control terminal 210 simultaneously by transmission medium 230, and control terminal
210 can reconcile digital camera device 220 according to each modulation frequency1To 220NThe digital signal sent out, and in conciliation
After obtain each digital camera device 2201To 220NThe presentation content transmitted.
In the prior art, in order to can ensure that each digital camera device 2201To 220NDifferent modulation frequency can be used,
Generating conflict to avoid output signal causes control terminal 210 that can not parse, and control terminal 210 can utilize additional one-to-one transmission line
To set each digital camera device 2201To 220NModulation frequency.However thus, not only the erection of transmission line be not easy,
It also must be to every digital camera device 220 in setting1To 220NIt sets one by one, causes to use upper inconvenience.In addition, also having
The prior art is in manufacture digital camera device 2201To 220NDuring, just preset the modulation of every digital camera device
Frequency, and when digital video recording system 200 is arranged, selection uses the digital camera device of different modulation frequencies.Such one
Come, it is not only less elastic in use, and if when expanding digital video recording system 200 in the future, also increasing
The difficulty of digital camera device is set.
Fig. 3 is the flow chart of the operating method 300 of the digital video recording system 200 of one embodiment of the invention.The side of passing through
Method 300, digital video recording system 200 are one-to-one transmission line that need not be additional, and can be automatically performed distribution number and take the photograph
As device 2201To 220NModulation frequency program, simplify the setting process of digital video recording system 200.Operating method 300
It may include step S310 to S370：
S310：Control terminal 210 is instructed via 230 broadcast setting of transmission medium to digital camera device 2201To 220N；
S320：When receiving setting instruction, digital camera device 2201To 220NInto connection mode；
S330：In the connection mode, each digital camera device 2201To 220NIt repeats after standby random stand-by time,
Registration signal is persistently sent to control terminal 210 according to initial modulation frequency in random registion time；
S340：Control terminal 210 reconciles digital camera device 2201To 220NTransmitted registration signal SIGR1To SIGRNWith
Parse each digital camera device 2201To 220NCorresponding accession designation number；
S350：Whether all digital camera devices 220 have been obtained1To 220NAccession designation number, if otherwise entering step
S360, if then entering S370；
S360：Whether has been exceeded the predetermined time, if otherwise entering step S340, if entering S390；
S370：Control terminal 210 is according to digital camera device 2201To 220NAccession designation number via transmission medium 230 transmit
Corresponding to digital camera device 2201To 220NModulation frequency to digital camera device 2201To 220N；
S372：Control terminal 210 records digital camera device 2201To 220NBetween corresponding accession designation number and modulation frequency
Correspondence；
S374：When receiving digital camera device 2201To 220NWhen corresponding modulation frequency, digital camera device 2201
To 220NChange and registration signal SIG is sent out with the modulation frequency corresponding to itR1To SIGRN；
S376：When control terminal 210 utilizes digital camera device 2201To 220NCorresponding modulation frequency reconciles registration signal
SIGR1To SIGRNWhen completion, control terminal 210 sends connection and completes instruction to digital camera device 2201To 220NSo that number is taken the photograph
As device 2201To 220NIt is disconnected pattern；
S380：Complete setting.
S390：Return mistake.
In step S310, control terminal 210 can will set command broadcast to digital camera device via transmission medium 230
2201To 220N.In step s 320, when receiving setting instruction, digital camera device 2201To 220NConnection can be entered
Pattern.In the connection mode, each digital camera device 2201To 220NIt can repeat after waiting for a random stand-by time, according to
Initial modulation frequency persistently sends it, and respectively corresponding registration signal and can continue to send one and note at random to control terminal 210
The volume time.
Fig. 4 is the digital camera device 220 of one embodiment of the invention1To 220NRegistration signal is sent in the connection mode
Schematic diagram.In Fig. 4, each digital camera device 2201To 220NIt can randomly determine respectively to need the standby time, and random
Stand-by time just start to send its corresponding registration signal later, and can continue to send a random registion time,
And after a standby random time, in sending corresponding registration signal in random registion time, so constantly repeat, directly
Connection, which is sent, to control terminal 210 completes instruction to digital camera device 2201To 220N, and make digital camera device 2201To 220N
It is disconnected pattern.
For example, in Fig. 4, when digital camera device 2201To 220NWhen having just enter into connection mode, digital camera device
2201May be 3 seconds standby, and continue via the transmission digital camera device 220 of transmission medium 230 in 6 seconds of connecting1Institute
Corresponding registration signal SIGR1, then digital camera device 2201May again standby 9 seconds, and held in 3 seconds of connecting
It is continuous to send digital camera device 220 via transmission medium 2301Corresponding registration signal SIGR1, and the rest may be inferred.Namely
It says, digital camera device 2201Can repeat it is standby with send signal state in checker, and each stand-by time and
Registion time is all to determine at random, and it is therefore possible to identical or different.Similarly, digital camera device 2202To 220NAlso it can weigh
The multiple checker in state that is standby and sending signal, and each stand-by time and registion time is all to determine at random, because
This is possible to identical or different.
In the section Example of the present invention, digital camera device 2201To 220NIt can be according to digital video recording system 200
The quantity N of middle digital camera device sets random time.For example, if variable n is 0 to the N integer randomly generated, and
T is the unit interval of system default, such as, but not limited to digital camera device 2201To 220NIt is enough to send out complete registration letter
Number shortest time parsed for control terminal 210, then digital camera device 2201To 220NCan after randomly generating out variable n,
The product of variable n and unit interval t are set as random time.Thus, it will be able to which generation is enough to supply each digital camera
Device 2201To 220NThe option of different random time is all generated, while being also unlikely to generate long stand-by time and delay whole
Time needed for body setting.By taking the embodiment of aforementioned Fig. 4 as an example, unit interval t is 3 seconds, therefore each digital camera
Device 2201The random stand-by time determined and random registion time all can be 3 seconds multiples, however the present invention not with
This is limited, in other embodiments of the invention, digital camera device 2201To 220NAlso can according to the demand of system by unit when
Between t be set as other numerical value, and or can determine its random stand-by time and random registion time according to other modes.
In addition, in step S330, digital camera device 2201To 220NIts note can be sent with identical initial modulation frequency
Volume signal, therefore in step S340, if at the same time, have more than a digital camera device and be simultaneously emitted by respectively
From registration signal, then will cause control terminal 210 that can not parse its signal, control terminal 210 can ignore these digital cameras at this time
The signal that device is sent out, until sending out its registration signal, and other in an interior only digital camera device at the same time
When digital camera device is all in standby mode, control terminal 210 registration signal of the modulation received by it and can obtain it
In the included information content.
For example, in the period T1 of Fig. 4, digital camera device 2201Registration signal is transmitted via transmission medium 230
SIGR1, and at the same time in section T1, digital camera device 2201To 220NIn in addition to digital camera device 2201Other numbers in addition
Photographic device 2202To 220NAll in standby mode, control terminal 210 can reconcile registration signal SIG at this timeR1To obtain registration
Signal SIGR1In the included information content, such as digital camera device 2201Corresponding accession designation number.According to digital camera
Device 2201Corresponding accession designation number, control terminal 210 can transmit exclusive instruction to digital camera device 2201, without
It can make other digital camera devices 2202To 220NMalfunction.In the section Example of the present invention, registration signal SIGR1In
It may also include other information, such as the model of digital camera device, the date of production ... etc., so that control terminal 210 being capable of area
Separate digital camera device 2201To 220NBetween difference.
In addition, in the period T2 of Fig. 4, digital camera device 2202Its registration signal is transmitted via transmission medium 230
SIGR2, and digital camera device 2203Also its registration signal SIG is transmitted via transmission medium 230 simultaneouslyR3, registration signal at this time
SIGR2With registration signal SIGR3It can interfere with each other, cause control terminal 210 that can not reconcile out registration signal SIGR2And registration signal
SIGR3In the included information content.In the case, control terminal 210 will ignore registration signal SIGR2And registration signal SIGR3。
However in the period T3 of Fig. 4, digital camera device 2202Still continue to transmit its registration signal SIG via transmission medium 230R2,
And digital camera device 2203Stop transmitting registration signal SIGR3If at this time in addition to other digital camera devices 2202In addition
Other digital camera devices all in standby mode, and period T3 time length it is sufficiently long in the case of, control terminal 210 is
Registration signal SIG can be reconciled in period T3R2, and parse digital camera device 2202Corresponding accession designation number.
All digital camera devices 220 are solved when step S350 judges that control terminal 210 is modulated1To 220NCorresponding registration
When number, operating method 300 can enter step S370 to carry out the setting of modulation frequency.If however control terminal 210 is not yet adjusted
Solve all digital camera devices 2201To 220NCorresponding accession designation number, then operating method 300 is that can enter step S360,
In step S360, if control terminal 210 can not reconcile out each digital camera device 220 in the given time1To 220NNote
Volume number, then it represents that may there is part number photographic device to can not be successfully response, operating method 300 can execute step at this time
S390 prompts manager to do further detection to return error message.And if in global procedures still in the given time, grasping
Step S340 can be returned to by making method 300, and the parsing digital camera device 220 that control terminal 210 can then continue1To 220NIt is sent out
The registration signal SIG gone outR1To SIGRN。
In step S370, control terminal 210 can be according to digital camera device 2201To 220NAccession designation number via transmission
The transmission of medium 230 corresponds to digital camera device 2201To 220NModulation frequency to digital camera device 2201To 220N.In step
In rapid S372, control terminal 210 can then record digital camera device 2201To 220NCorresponding modulation frequency and its accession designation number
Correspondence.In general, digital camera device 2201To 220NDifferent modulation frequency, and digital camera device can be corresponded to
2201To 220NModulation frequency can be different with initial modulation frequency.Table 1 is the accession designation number and modulation frequency of one embodiment of the invention
Mapping table between rate.
Table 1
If digital camera device 2201Accession designation number be A00001, and digital camera device 2202Accession designation number be
A00002 then can learn digital camera device 220 according to table 11Corresponding modulation frequency is 177MHz, and digital camera device
2202Corresponding modulation frequency is 261MHz.When digital camera device 2201To 220NWhen receiving its corresponding modulation frequency, number
Word photographic device 2201To 220NCan change in step S374 with using its corresponding modulation frequency come its registration signal of modulation
SIGR1To SIGRN。
That is, digital camera device 2201To 220NIt can be respectively according to different modulation frequency come its registration letter of modulation
Number SIGR1To SIGRN, such as digital camera device 2201It will be using modulation frequency 177MHz come modulation registration signal SIGR1, and count
Word photographic device 2202It will be using modulation frequency 261MHz come modulation registration signal SIGR2.So even in digital camera device
2201To 220NIt is simultaneously emitted by registration signal SIGR1To SIGRNIn the case of, control terminal 210 remains able to be taken the photograph according to each number
As device 2201To 220NCorresponding specific modulation frequency reconciles out each digital camera device 2201To 220NThe note sent out
Volume signal SIGR1To SIGRNIn accession designation number.
Since in step S372, control terminal 210 has had recorded digital camera device 2201To 220NCorresponding registration
Correspondence between number and modulation frequency, therefore control terminal 210 is being reconciled registration signal according to specific modulation frequency and is being taken
When obtaining accession designation number therein, it will be able to confirm whether setting is completed according to the correspondence of its precedence record.For example, if
Digital camera device 2201Accession designation number be A00001, and its modulation frequency for being assigned to is 177MHz, then works as control terminal
210 reconcile registration signal SIG using modulation frequency 177MHzR1And when showing that its accession designation number is A00001, expression and control terminal
210 record is consistent, digital camera device 2201It has been set completion.However, if control terminal 210 can not utilize modulation frequency
177MHz reconciles registration signal SIGR1When showing that accession designation number is A00001, then it represents that digital camera device 2201It may be not yet
Setting complete or it is online go wrong, control terminal 210 can continue to digital camera device 220 at this time1It sends out corresponding to it
Modulation frequency 177MHz, to wait for digital camera device 2201Complete setting.In addition, in the section Example of the present invention, if
Control terminal 210 in the given time can not be by digital camera device 2201To 220NSetting is completed, then can also return error message,
So that administrator is further inspected.
In step S376, when control terminal 210 utilizes digital camera device 2201To 220NCorresponding modulation frequency is reconciled
Registration signal SIGR1To SIGRNAnd confirm digital camera device 2201To 220NWhen being complete setting, control terminal 210
It sends connection and completes instruction to digital camera device 2201To 220NSo that digital camera device 2201To 220NIt is disconnected mould
Formula.It is disconnected after pattern, digital camera device 2201To 220NIt will stop sending registration signal SIGR1To SIGRN, and can
The presentation content that it is captured according to the instruction transmission of control terminal 210, and each digital camera device 2201To 220NIt can be utilized
Corresponding modulation frequency carrys out modulation digitized video content.Such as in the foregoing embodiments, digital camera device 2201It can root
Digital camera device 220 is transmitted according to modulation frequency 177MHz1The presentation content captured is to control terminal 210, and digital camera fills
Set 2202Digital camera device 220 then can be transmitted according to modulation frequency 261MHz2The presentation content captured is to control terminal 210.Such as
This one, control terminal 210 can reconcile the signal received according to different modulation frequencies and obtain different digital camera shooting
The presentation content that device is transmitted.
In the section Example of the present invention, digital camera device 2201To 220NCorresponding accession designation number can be by number
Photographic device 2202To 220NVoluntarily with generating random number, therefore digital camera device 2201To 220NIt is possible that will produce out phase
With accession designation number, at this time control terminal 210 digital camera device of identical accession designation number can be required to regenerate new registration compile
Number.For example, if control terminal 210 is obtaining digital camera device 2201And 2202After corresponding accession designation number, number is realized
Word photographic device 2201And 2202Accession designation number having the same, control terminal 210 can be via the transmission volume of transmission medium 230 at this time
Number more new command is so that digital camera device 2201And 2202Regenerate updated accession designation number.This process can be continuous
Ground repeats, until each digital camera device 2201To 220NAccession designation number it is all different with other digital camera devices.
Further, since in operating method 300, control terminal 210 is to obtain all digital camera devices 2201To 220N's
After accession designation number, just to digital camera device 2201To 220NIts corresponding modulation frequency is sent out, and different modulation frequencies exists
Attenuation degree in transmission process difference, therefore control terminal 210 can also be according to receiving each digital camera device 2201Extremely
220NRegistration signal SIGR1To SIGRNIntensity, set each digital camera device 2201To 220NCorresponding modulation frequency
Rate.
For example, control terminal 210 and digital camera device 2201The distance between may farther out, or pass through circuit matter
It measures bad, leads to digital camera device 2201The registration signal SIG sent outR1Intensity it is on the weak side.Control terminal 210 is filled with digital camera
Set 2202The distance between it is relatively close, or the line quality passed through is preferable, leads to digital camera device 2202The registration signal sent out
SIGR2Intensity it is stronger.Due to attenuation degree of the low frequency signal in transmission process would generally higher frequency signals come it is small,
In the case, control terminal 210 can set digital camera device 2201Corresponding modulation frequency is less than digital camera device
2202Corresponding modulation frequency.Thus, the registration signal SIG that intensity is weakerR1Can with lower modulation frequency into
Row transmission, to reduce registration signal SIGR1Further decline.
By operating method 300, digital video recording system 200 can be without being previously set, automatically
By digital camera device 2201To 220NIt distributes to different modulation frequency, and will not be because of digital camera device 2201To 220N
Wire laying mode and influenced.Therefore, operating method 300 can effectively simplify the setting stream of digital video recording system 200
Journey, and it is more flexible in management, and be easy to expand or change.
In addition, in the section Example of the present invention, control terminal 210 also can be in every note for obtaining a digital camera device
When volume number, corresponding modulation frequency is just exported, and after the relationship of record accession designation number and modulation frequency so that be set
The digital camera device of completion is disconnected pattern in advance.For example, when operating method 300 number is parsed in step S340
Word photographic device 2201Accession designation number when, you can first skip over step S350 and S360, and directly execute step S370, make control
End 210 is according to digital camera device 2201Accession designation number send correspond to digital camera device 2201Modulation frequency to number
Photographic device 2201.Then, step S372 and S374 are executed, by digital camera device 2201Corresponding accession designation number A00001
And after the completion of the correspondence record between modulation frequency 177MHz, and confirm digital camera device 220 in control terminal 2101
Modulation output registration signal SIG is come with modulation frequency 177MHz through changingR1Afterwards, so that control terminal 210 is sent connection and complete instruction
To digital camera device 2201, so that digital camera device 2201It is disconnected pattern.
That is, step S376 can be substituted, therefore control terminal 210 need not wait until all digital camera devices 2201
To 220NSetting is all completed, connection is just sent and completes instruction.Thus, which modulation frequency has been set the digital camera dress of completion
Set 2201It can be disconnected pattern in advance, and stop sending registration signal SIGR1, and then reduce digital camera device
2201To 220NSend registration signal SIG simultaneouslyR1To SIGRNProbability, with other sharp digital camera devices 2202To 220NIt can
More rapidly complete setting.
In conclusion the digital video recording system operation methods provided through the embodiment of the present invention, it will be able in nothing
In the case of need to being previously set, the digital camera device in digital video recording system is distributed to different modulation frequency automatically
Rate, and will not be influenced because of the wire laying mode of digital camera device.Therefore, digital video recording system of the invention behaviour
The setting process of digital video recording system can effectively be simplified by making method, and more flexible in management, and be easy to expand
Or change.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, any made by repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of operating method of digital video recording system, which is characterized in that the digital video recording system includes control
End, multiple digital camera devices and transmission medium, the transmission medium are coupled to the control terminal and the multiple digital camera
Device, the method includes：
The control terminal is instructed via the transmission medium broadcast setting to the multiple digital camera device；
When receiving the setting instruction, the multiple digital camera device enters connection mode；
Under the connection mode, each digital camera device repeats after standby random stand-by time, according to initial modulation frequency
Rate sends registration signal to the control terminal via the transmission medium, and when persistently sending the registration signal and registering at random
Between, the registration signal includes the accession designation number of the digital camera device；
When the first digital camera device in the multiple digital camera device is believed via the first registration of transmission medium transmission
Number, and other digital camera devices in the multiple digital camera device other than first digital camera device all exist
When standby, the control terminal is reconciled first registration signal using the initial modulation frequency and is taken the photograph with obtaining first number
The first accession designation number as corresponding to device；
The control terminal corresponds to first digital camera according to first accession designation number via transmission medium transmission
First modulation frequency of device is to first digital camera device, first modulation frequency and the initial modulation frequency phase
It is different；
The control terminal records the correspondence between first modulation frequency and first accession designation number；
When first digital camera device receives first modulation frequency, first digital camera device changes with root
First registration signal is sent according to first modulation frequency；And
The control terminal sends connection and completes instruction extremely after reconciling first registration signal using first modulation frequency
First digital camera device is so that first digital camera device is detached from the connection mode.
2. the method as described in claim 1, it is characterised in that include separately：
When the second digital camera device in the multiple digital camera device is believed via the second registration of transmission medium transmission
Number, and with the third digital camera device in time the multiple digital camera device via transmission medium transmission third note
When volume signal, the control terminal ignores second registration signal and the third registration signal.
3. the method as described in claim 1, it is characterised in that include separately：
After the control terminal obtains first accession designation number corresponding to first digital camera device, the control
The second registration signal that end the second digital camera device of conciliation is transmitted is to obtain corresponding to second digital camera device
Second accession designation number；And
When second accession designation number is identical as first accession designation number, the control terminal is transmitted via the transmission medium
Number more new command is so that first digital camera device regenerates the first accession designation number after updating and makes second number
Word photographic device regenerates the second accession designation number after update.
4. the method as described in claim 1, it is characterised in that include separately：
After being detached from the connection mode, first digital camera device transmits the first number according to first modulation frequency and takes the photograph
The presentation content captured as device is to the control terminal.
5. the method as described in claim 1, it is characterised in that include separately：
When the control terminal reconciles out multiple accession designation numbers of the multiple digital camera device, the multiple digital camera is recorded
The correspondence of multiple modulation frequencies and the multiple accession designation number corresponding to device, and filled using the multiple digital camera
After the completion of the multiple modulation frequency corresponding to setting reconciles multiple registration signals that the multiple digital camera device is sent out,
The control terminal sends connection and completes instruction to the multiple digital camera device so that the multiple digital camera device is detached from
The connection mode.
6. the method as described in claim 1, it is characterised in that include separately：
When the control terminal can not reconcile out the accession designation number of each digital camera device in the given time, the control terminal
Show error message.
7. the method as described in claim 1, which is characterized in that the control terminal is according to first accession designation number via described
Transmission medium transmit first modulation frequency to first digital camera device be reconciled out in the control terminal it is described more
Multiple accession designation numbers of a digital camera device, and record multiple modulation frequencies corresponding to the multiple digital camera device with
It is executed after the correspondence of the multiple accession designation number.
8. the method for claim 7, it is characterised in that include separately：
The control terminal sets each digital camera dress according to the intensity for the registration signal for receiving each digital camera device
Set corresponding modulation frequency.
9. method as claimed in claim 8, it is characterised in that：
When the intensity that the control terminal receives first registration signal that first digital camera device is sent out is less than
When the control terminal receives the intensity for the second registration signal that the second digital camera device is sent out, the control terminal sets institute
First modulation frequency corresponding to the first digital camera device is stated less than the corresponding to second digital camera device
Two modulation frequencies.
10. the method as described in claim 1, which is characterized in that the transmission medium is coaxial cable, twisted wire or wireless network
Network.
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| TW106108688A TWI637633B (en) | 2017-03-16 | 2017-03-16 | Method for operating a digital video recording system |
| TW106108688 | 2017-03-16 |
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| CN108632571A true CN108632571A (en) | 2018-10-09 |
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| TW (1) | TWI637633B (en) |
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| CN108632571B (en) | 2020-12-08 |
| TWI637633B (en) | 2018-10-01 |
| TW201836344A (en) | 2018-10-01 |
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