CN108881435A - Real-time clock providing method, server, household appliance, system and medium - Google Patents
Real-time clock providing method, server, household appliance, system and medium Download PDFInfo
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- CN108881435A CN108881435A CN201810626593.0A CN201810626593A CN108881435A CN 108881435 A CN108881435 A CN 108881435A CN 201810626593 A CN201810626593 A CN 201810626593A CN 108881435 A CN108881435 A CN 108881435A
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- server
- time clock
- virtual unit
- wifi module
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/60—Scheduling or organising the servicing of application requests, e.g. requests for application data transmissions using the analysis and optimisation of the required network resources
- H04L67/61—Scheduling or organising the servicing of application requests, e.g. requests for application data transmissions using the analysis and optimisation of the required network resources taking into account QoS or priority requirements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
- H04J3/0635—Clock or time synchronisation in a network
- H04J3/0638—Clock or time synchronisation among nodes; Internode synchronisation
- H04J3/0644—External master-clock
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/56—Provisioning of proxy services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/001—Synchronization between nodes
- H04W56/0015—Synchronization between nodes one node acting as a reference for the others
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/10—Small scale networks; Flat hierarchical networks
- H04W84/12—WLAN [Wireless Local Area Networks]
Abstract
The invention discloses a kind of real-time clock providing method of server, server includes virtual unit and physical device, and the real-time clock providing method of server includes the following steps：Server selects the corresponding virtual unit to establish connection with the multiple WiFi module respectively when receiving the request for the acquisition time that multiple WiFi modules are sent, according to preset algorithm；When completing connection between the virtual unit and the WiFi module, the virtual unit sends the request of acquisition time to the physical device；The physical device returns to real-time clock to the WiFi module by the virtual unit according to the request of the acquisition time.The invention also discloses a kind of server, household appliance, the offer system of real-time clock and computer readable storage mediums.When the present invention can solve a large amount of WiFi module while obtain real-time clock to server, server is avoided the technical issues of paralysis occur.
Description
Technical field
The present invention relates to field of communication technology more particularly to a kind of real-time clock providing method of server, server, families
Electric equipment, the offer system of real-time clock and computer readable storage medium.
Background technique
The WiFi module of existing household appliance is usually directly obtained from server when obtaining real-time clock to server
's.If the same time has the WiFi module of high number to obtain real-time clock (for example, after major power outage again to server
At the time of power supply), then, real-time clock is directly obtained by the actual time equipment of server-side simultaneously in a large amount of WiFi module
When, then it may result in the phenomenon that server is paralysed.
Summary of the invention
The main purpose of the present invention is to provide a kind of real-time clock providing method of server, server, household appliance,
The offer system and computer readable storage medium of real-time clock, it is intended to solve a large amount of WiFi module and be obtained simultaneously to server
When real-time clock, server is avoided the technical issues of paralysis occur.
To achieve the above object, the present invention provides a kind of real-time clock providing method of server, and the server includes
The real-time clock providing method of virtual unit and physical device, the server includes the following steps：
The server is selected when receiving the request for the acquisition time that multiple WiFi modules are sent according to preset algorithm
The corresponding virtual unit establishes connection with the multiple WiFi module respectively；
When completing connection between the virtual unit and the WiFi module, the virtual unit is to the physical device
Send the request of acquisition time；
The physical device is returned by the virtual unit to the WiFi module according to the request of the acquisition time
Real-time clock.
Preferably, the WiFi module is built in household appliance, and the physical device is asked according to the acquisition time
Further include before the step of asking, returning to real-time clock to the WiFi module by the virtual unit：
Obtain the line duration of the household appliance；
Priority ranking is carried out to the virtual unit according to the line duration of the household appliance.
Preferably, the WiFi module is built in household appliance, and the physical device is asked according to the acquisition time
Further include before the step of asking, returning to real-time clock to the WiFi module by the virtual unit：
Obtain the mass parameter for indicating communication quality between the virtual unit and the WiFi module；
Priority ranking is carried out to the virtual unit according to the mass parameter.
Preferably, the mass parameter includes：Connection Time, connection one of number and packet loss or a variety of.
Preferably, the physical device is according to the request of the acquisition time, by the virtual unit to the WiFi
Module return real-time clock the step of include：
The physical device obtains the described of highest priority and virtually sets when receiving the request of the acquisition time
It is standby；
Real-time clock is returned to the WiFi module by the virtual unit of highest priority.
Preferably, the time format that the real-time clock provides is json format.
Preferably, the quantity of the virtual unit is greater than or equal to the quantity of the physical device.
To achieve the above object, the present invention also provides a kind of server, the server includes processor, memory and deposits
The real-time clock for storing up the server that can be run on the memory and on the processor provides program, the server
Real-time clock provides the step that the real-time clock providing method of server as described above is realized when program is executed by the processor
Suddenly.
To achieve the above object, the present invention also provides a kind of household appliance, the household appliance has a WIFI module, institute
WIFI module is stated for sending the request of acquisition time to server, and in the virtual unit of the server and the WIFI mould
When completing connection between block, the real-time clock that the physical device of the server is returned by the virtual unit is received.
Preferably, the household appliance is air conditioner.
To achieve the above object, the present invention also provides a kind of offer system of real-time clock, the offers of the real-time clock
System includes server as described above and household appliance as described above.
To achieve the above object, the present invention also provides a kind of computer readable storage medium, the computer-readable storages
Media storage has the real-time clock of server to provide program, when the real-time clock offer program of the server is executed by processor
Realize each step of the real-time clock providing method of server as described above.
The real-time clock providing method of server provided by the invention, server, household appliance, real-time clock offer system
System and computer readable storage medium, through server when receiving the request for the acquisition time that multiple WiFi modules are sent,
It selects corresponding virtual unit to establish connection with the multiple WiFi module respectively according to preset algorithm, is then virtually set described
It is standby between the WiFi module complete connection when, the virtual unit to physical device send acquisition time request, finally
The physical device is according to the request of the acquisition time, when returning to real-time to the WiFi module by the virtual unit
Clock.In this way, it is existing can to there is paralysis to avoid server when a large amount of WiFi module obtains real-time clock to server simultaneously
As.
Detailed description of the invention
Fig. 1 be the present embodiments relate to server hardware structural diagram；
Fig. 2 is the flow diagram of the real-time clock providing method first embodiment of server of the present invention；
Fig. 3 is the flow diagram of the real-time clock providing method second embodiment of server of the present invention；
Fig. 4 is the flow diagram of the real-time clock providing method 3rd embodiment of server of the present invention；
Fig. 5 provides the functional block diagram of one embodiment of system for real-time clock of the present invention.
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object 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.
The primary solutions of the embodiment of the present invention are：
Server selects to correspond to when receiving the request for the acquisition time that multiple WiFi modules are sent, according to preset algorithm
Virtual unit establish connection with the multiple WiFi module respectively；
When completing connection between the virtual unit and the WiFi module, the virtual unit is sent to physical device
The request of acquisition time；
The physical device is returned by the virtual unit to the WiFi module according to the request of the acquisition time
Real-time clock.
Since the WiFi module of existing household appliance is when obtaining real-time clock to server, usually directly from server
It obtains.If the same time has the WiFi module of high number to obtain real-time clock (for example, major power outage) to server,
So, when a large amount of WiFi module directly obtains real-time clock by the actual time equipment of server-side simultaneously, then may
The phenomenon that causing server to be paralysed.
The present invention provides a solution, is receiving the acquisition time of multiple WiFi modules transmissions by server
When request, corresponding virtual unit is selected to establish connection with the multiple WiFi module respectively according to preset algorithm, then in institute
When stating completion connection between virtual unit and the WiFi module, the virtual unit sends asking for acquisition time to physical device
It asks, the last physical device is returned by the virtual unit to the WiFi module according to the request of the acquisition time
Real-time clock.In this way, paralysis can occur when a large amount of WiFi module obtains real-time clock to server simultaneously to avoid server
Paralysis phenomenon.
As shown in Figure 1, the embodiment of the present invention, what is involved is server, the server may include：Processor
1001, for example, CPU, user interface 1002, memory 1003, communication bus 1004.Wherein, communication bus 1004 is for realizing this
Connection communication between a little components.User interface 1002 may include display screen (Display), input unit.Memory 1003
It can be high speed RAM memory, be also possible to stable memory (non-volatile memory), such as magnetic disk storage.
Memory 1003 optionally can also be the storage device independently of aforementioned processor 1001.
It will be understood by those skilled in the art that server architecture shown in Fig. 1 does not constitute the restriction to server, it can
To include perhaps combining certain components or different component layouts than illustrating more or fewer components.
As shown in Figure 1, as may include in a kind of memory 1003 of computer storage medium server it is real-time when
Clock provides program；And processor 1001 can be used for calling the real-time clock of the server stored in memory 1002 to provide journey
Sequence, and execute following operation：
The server is selected when receiving the request for the acquisition time that multiple WiFi modules are sent according to preset algorithm
The corresponding virtual unit establishes connection with the multiple WiFi module respectively；
When completing connection between the virtual unit and the WiFi module, the virtual unit is to the physical device
Send the request of acquisition time；
The physical device is returned by the virtual unit to the WiFi module according to the request of the acquisition time
Real-time clock.
Further, processor 1001 can be used for calling the real-time clock of the server stored in memory 1002 to provide
Program, and execute following operation：
Obtain the line duration of the household appliance；
Priority ranking is carried out to the virtual unit according to the line duration of the household appliance.
Further, processor 1001 can be used for calling the real-time clock of the server stored in memory 1002 to provide
Program, and execute following operation：
Obtain the mass parameter for indicating communication quality between the virtual unit and the WiFi module；
Priority ranking is carried out to the virtual unit according to the mass parameter.
Further, processor 1001 can be used for calling the real-time clock of the server stored in memory 1002 to provide
Program, and execute following operation：
The mass parameter includes：Connection Time, connection one of number and packet loss or a variety of.
Further, processor 1001 can be used for calling the real-time clock of the server stored in memory 1002 to provide
Program, and execute following operation：
The physical device obtains the described of highest priority and virtually sets when receiving the request of the acquisition time
It is standby；
Real-time clock is returned to the WiFi module by the virtual unit of highest priority.
Further, processor 1001 can be used for calling the real-time clock of the server stored in memory 1002 to provide
Program, and execute following operation：
The time format that the real-time clock provides is json format.
Further, processor 1001 can be used for calling the real-time clock of the server stored in memory 1002 to provide
Program, and execute following operation：
The quantity of the virtual unit is greater than or equal to the quantity of the physical device.
Based on above-mentioned hardware architecture, the embodiment of the real-time clock providing method of server of the present invention is proposed.
It is the first embodiment of the real-time clock providing method of server of the present invention referring to Fig. 2, Fig. 2, the server
Real-time clock providing method includes the following steps：
Step S1, the described server is when receiving the request for the acquisition time that multiple WiFi modules are sent, according to default
The corresponding virtual unit of algorithms selection establishes connection with the multiple WiFi module respectively；
In the present embodiment, the server includes virtual unit and physical device, the virtual unit can respectively with
WiFi module and the physical device communication connection.Specifically, the server includes multiple virtual units and more
A physical device.Preferably, the quantity of the virtual unit is greater than or equal to the quantity of the physical device, for example, the void
Proposing standby quantity is 100, and the quantity of the physical device is 20, in this way, the virtual unit is equivalent to the service
The increased virtual middle layer in device end not only can externally allow 100 WiFi modules while connect, but also can internally scoop out 20 realities
Border equipment, the quantity for allowing to supply WiFi module connection is not limited by physical device, to meet multiple WiFi moulds
Block accesses the demand of server simultaneously.
In the present embodiment, the WiFi module is built in the household appliances such as air conditioner, when there are the feelings such as major power outage
When condition, the same time have the WiFi module of a large amount of household appliance to server obtain real-time clock, when server receive it is more
When the request for the acquisition time that a WiFi module is sent, the server can select the corresponding void according to preset algorithm
Proposing back-up and not establishing connection namely each WiFi module with the multiple WiFi module can correspond to and multiple virtual units
In one establish connection.Wherein, the preset algorithm is preferably random algorithm.One is randomly choosed virtually by random algorithm
Equipment establishes connection with WiFi module, in this way, avoid multiple WiFi modules while being connected to the same server.
Step S2, when completing connection between the virtual unit and the WiFi module, the virtual unit is to described
The request of physical device transmission acquisition time；
In the present embodiment, when completing connection between the virtual unit and the WiFi module, the virtual unit will
The request for the acquisition time that the WiFi module is sent, is forwarded to physical device.Specifically, the virtual unit is to the reality
When border equipment sends the request of acquisition time, equally corresponding physical device can be selected according to preset algorithm, wherein described pre-
Imputation method is preferably random algorithm.A physical device is randomly choosed by random algorithm, establishes connection with virtual unit.
Step S3, the described physical device is according to the request of the acquisition time, by the virtual unit to the WiFi
Module returns to real-time clock.
In the present embodiment, for the physical device when receiving the request of the acquisition time, the physical device is to institute
It states virtual unit and real-time clock is provided, the real-time clock is then back to by the WiFi module by the virtual unit.
The abbreviation of real-time clock is RTC (Real_Time Clock), and RTC is integrated circuit, commonly referred to as clock chip.
Clock chip is one of the consumer electronics product being most widely used in daily life, when it provides accurate real-time for people
Between, or for electronic system provide accurate time reference.Clock chip mostly uses greatly the higher crystal oscillator of precision at present
As clock source, some clock chips need external battery to power to work in main power source power down.
The real-time clock providing method of server provided by the invention is receiving multiple WiFi modules hairs by server
When the request for the acquisition time sent, corresponding virtual unit is selected to establish respectively with the multiple WiFi module according to preset algorithm
Connection, when then completing connection between the virtual unit and the WiFi module, the virtual unit is sent out to physical device
The request of acquisition time is sent, the last physical device is according to the request of the acquisition time, by the virtual unit to institute
It states WiFi module and returns to real-time clock.In this way, can be kept away when a large amount of WiFi module obtains real-time clock to server simultaneously
Exempt from server and paralysis occurs.
Referring to Fig. 3, in a second embodiment, it is based on first embodiment shown in Fig. 2, the WiFi module is built in household electrical appliances
In equipment, further include before the step S3：
Step S4, the line duration of the household appliance is obtained；
In the present embodiment, the line duration includes login time section and online hours of household appliance etc., is specifically obtained
The mode is taken to be：The login time of the household appliance is obtained, and is recorded due to the household appliance because of power-off or Network status
Offline time caused by the reasons such as bad, then according to the offline time and the login time calculating difference, you can get it
The line duration of the household appliance in certain time period.Certainly, when the household appliance is online again, institute is obtained again
The line duration of household appliance is stated, and is added up to the line duration of the household appliance.
Step S5, priority ranking is carried out to the virtual unit according to the line duration of the household appliance.
In the present embodiment, according to the line duration of the household appliance, it is connect to the WiFi module of the household appliance
Virtual unit carry out priority ranking.When the line duration of the household appliance is longer, show locating for the household appliance
Home network state is better, then the priority of the corresponding virtual unit is higher.
Referring to Fig. 4, in the third embodiment, it is based on first embodiment shown in Fig. 2, the WiFi module is built in household electrical appliances
In equipment, further include before the step S3：
Step S6, the mass parameter for indicating communication quality between the virtual unit and the WiFi module is obtained；
Step S7, priority ranking is carried out to the virtual unit according to the mass parameter.
In the present embodiment, the mass parameter includes Connection Time, connection one of number and packet loss or a variety of.
When longer between when attached, then indicate that the communication quality between the virtual unit and the WiFi module is higher；When attached
Between it is shorter, then indicate that the communication quality between the virtual unit and the WiFi module is lower；When connection number is more, then
Indicate that the communication quality between the virtual unit and the WiFi module is lower；When connection number is fewer, then described in instruction
Communication quality between virtual unit and the WiFi module is higher；When packet loss is more, then indicate the virtual unit with
Communication quality between the WiFi module is lower；When packet loss is fewer, then the virtual unit and the WiFi mould are indicated
Communication quality between block is higher.When the mass parameter of acquisition includes above several, these parameters can be carried out
Weight setting, calculates comprehensive communication quality.
When communication quality is higher, then the priority of the corresponding virtual unit is higher；When the communication quality is lower
When, then the priority of the corresponding virtual unit is lower.
Referring to Fig. 3 or Fig. 4, in the fourth embodiment, second or third embodiments are based on, the step S3 includes：
Step S31, the described physical device obtains the described of highest priority when receiving the request of the acquisition time
Virtual unit；
Step S32, real-time clock is returned to the WiFi module by the virtual unit of highest priority.
In the present embodiment, request of the physical device in the acquisition time for receiving the virtual unit forwarding
When, the virtual unit of highest priority in multiple virtual units is obtained, namely selection is the longest household electrical appliances of line duration
Equipment.By the virtual unit of highest priority, returned to the WiFi module of the longest household appliance of line duration
Real-time clock.In this way, the success rate that real-time clock is back to the WiFi module of household appliance can be improved, physical device is avoided
The household appliance bad to Network status provides real-time clock, ensures that the stability of communication.
Preferably, the time format that the real-time clock provides is json format, which is easy to people and reads and write, together
When be also easy to machine parsing and generate, so as to effectively promote network transmission efficiency.
The present invention also provides a kind of server, the server includes processor, memory and is stored in the memory
The real-time clock for the server gone up and can run on the processor provides program, and the real-time clock of the server provides journey
Sequence realizes the step of real-time clock providing method of server as described above when being executed by the processor.
The present invention also provides a kind of household appliance, the household appliance has a WIFI module, and the WIFI module is used for
The request of acquisition time is sent to server, and connection is completed between the virtual unit of the server and the WIFI module
When, receive the real-time clock that the physical device of the server is returned by the virtual unit.Preferably, the household appliance
For air conditioner.
Referring to Fig. 4, the present invention also provides a kind of offer system 100 of real-time clock, the offer systems of the real-time clock
Including server 1 as described above, and household appliance 2 as described above.
The present invention also provides a kind of computer readable storage medium, the computer-readable recording medium storage has server
Real-time clock program is provided, the real-time clock of the server, which provides, realizes clothes as described above when program is executed by processor
Each step of the real-time clock providing method of business device.
The serial number of the above embodiments of the invention is only for description, does not represent the advantages or disadvantages of the embodiments.
It should be noted that, in this document, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that the process, method, article or the device that include a series of elements not only include those elements, and
And further include other elements that are not explicitly listed, or further include for this process, method, article or device institute it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including being somebody's turn to do
There is also other identical elements in the process, method of element, article or device.
Through the above description of the embodiments, those skilled in the art can be understood that above-described embodiment side
Method can be realized by means of software and necessary general hardware platform, naturally it is also possible to by hardware, but in many cases
The former is more preferably embodiment.Based on this understanding, technical solution of the present invention substantially in other words does the prior art
The part contributed out can be embodied in the form of software products, which is stored in one as described above
In storage medium (such as ROM/RAM, magnetic disk, CD), including some instructions are used so that terminal device (it can be mobile phone,
Computer, server, air conditioner or network equipment etc.) execute method described in each embodiment of the present invention.
The above is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (12)
1. a kind of real-time clock providing method of server, which is characterized in that the server includes virtual unit and actually sets
Standby, the real-time clock providing method of the server includes the following steps：
The server selects to correspond to when receiving the request for the acquisition time that multiple WiFi modules are sent, according to preset algorithm
The virtual unit establish connection with the multiple WiFi module respectively；
When completing connection between the virtual unit and the WiFi module, the virtual unit is sent to the physical device
The request of acquisition time；
The physical device is returned in real time by the virtual unit to the WiFi module according to the request of the acquisition time
Clock.
2. the real-time clock providing method of server as described in claim 1, which is characterized in that the WiFi module is built in
In household appliance, the physical device is according to the request of the acquisition time, by the virtual unit to the WiFi module
Further include before the step of returning to real-time clock：
Obtain the line duration of the household appliance；
Priority ranking is carried out to the virtual unit according to the line duration of the household appliance.
3. the real-time clock providing method of server as described in claim 1, which is characterized in that the WiFi module is built in
In household appliance, the physical device is according to the request of the acquisition time, by the virtual unit to the WiFi module
Further include before the step of returning to real-time clock：
Obtain the mass parameter for indicating communication quality between the virtual unit and the WiFi module；
Priority ranking is carried out to the virtual unit according to the mass parameter.
4. the real-time clock providing method of server as claimed in claim 3, which is characterized in that the mass parameter includes：
Connection Time, connection one of number and packet loss or a variety of.
5. the real-time clock providing method of the server as described in any one of claim 2 to 4, which is characterized in that the reality
Border equipment is according to the request of the acquisition time, the step of returning to real-time clock to the WiFi module by the virtual unit
Including：
The physical device obtains the virtual unit of highest priority when receiving the request of the acquisition time；
Real-time clock is returned to the WiFi module by the virtual unit of highest priority.
6. the real-time clock providing method of server as described in claim 1, which is characterized in that the real-time clock provided
Time format is json format.
7. the real-time clock providing method of server as described in claim 1, which is characterized in that the quantity of the virtual unit
More than or equal to the quantity of the physical device.
8. a kind of server, which is characterized in that the server includes processor, memory and is stored on the memory simultaneously
The real-time clock for the server that can be run on the processor provides program, and the real-time clock of the server provides program quilt
The step of real-time clock providing method such as the described in any item servers of claim 1-7 is realized when the processor executes.
9. a kind of household appliance, which is characterized in that the household appliance has a WIFI module, and the WIFI module is used for clothes
The request for device transmission acquisition time of being engaged in, and between the virtual unit of the server and the WIFI module when completion connection,
Receive the real-time clock that the physical device of the server is returned by the virtual unit.
10. household appliance as claimed in claim 9, which is characterized in that the household appliance is air conditioner.
11. a kind of offer system of real-time clock, which is characterized in that the offer system of the real-time clock includes such as claim
Server described in 8, and the household appliance as described in any one of claim 9 to 10.
12. a kind of computer readable storage medium, which is characterized in that the computer-readable recording medium storage has server
Real-time clock provides program, and the real-time clock of the server provides when program is executed by processor and realizes such as claim 1-7
Each step of the real-time clock providing method of described in any item servers.
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| CN201810626593.0A CN108881435B (en) | 2018-06-15 | 2018-06-15 | Real-time clock providing method, server, home appliance, system, and medium |
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| CN201810626593.0A CN108881435B (en) | 2018-06-15 | 2018-06-15 | Real-time clock providing method, server, home appliance, system, and medium |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111176128A (en) * | 2020-01-02 | 2020-05-19 | 深圳拓邦股份有限公司 | Method, device, server and system for improving online rate of Internet of things household appliances |
| CN114157407A (en) * | 2021-11-16 | 2022-03-08 | 北京华能新锐控制技术有限公司 | Cross-safety zone clock synchronization system and method under one-way isolation condition |
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| CN108881435B (en) | 2021-12-03 |
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