CN106162518A - A kind of terminal digital information transmission method based on proximity transducer and device - Google Patents
A kind of terminal digital information transmission method based on proximity transducer and device Download PDFInfo
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- CN106162518A CN106162518A CN201510198342.3A CN201510198342A CN106162518A CN 106162518 A CN106162518 A CN 106162518A CN 201510198342 A CN201510198342 A CN 201510198342A CN 106162518 A CN106162518 A CN 106162518A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 78
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000004891 communication Methods 0.000 claims abstract description 31
- 238000005516 engineering process Methods 0.000 abstract description 4
- 239000007795 chemical reaction product Substances 0.000 abstract description 3
- 238000013461 design Methods 0.000 abstract description 3
- 230000003287 optical effect Effects 0.000 description 11
- 230000004044 response Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000008859 change Effects 0.000 description 4
- 238000012545 processing Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
- H04B10/114—Indoor or close-range type systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/1607—Details of the supervisory signal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/10—Flow control between communication endpoints
- H04W28/14—Flow control between communication endpoints using intermediate storage
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mobile Radio Communication Systems (AREA)
- Optical Communication System (AREA)
Abstract
The invention discloses a kind of terminal digital information transmission method based on proximity transducer and device, relating to wireless communication technology field, its method comprises the following steps: as sending the mobile phone of terminal and utilizing respective proximity transducer to set up communication link as the mobile phone receiving terminal；After setting up described communication link, described transmission terminal, by being switched on and off its proximity transducer by Binary Zero and 1 information, produces corresponding to Binary Zero and the discontinuous signal of 1 information；Described reception terminal receives described discontinuous signal with its proximity transducer, thus obtains sending Binary Zero and 1 information of terminal.The present invention is without complicated external circuit, and design is easy easily to be realized, beneficially end product cost declining.
Description
Technical field
The present invention relates to wireless communication technology field, believe particularly to a kind of terminal numeral based on proximity transducer
Breath transmission method and device.
Background technology
At present the data transfer means on cell phone apparatus is varied, from wired to wireless mode, speed by height to
Low, ultimate principle is all that primary data information (pdi) is converted to digital signal, and by certain modulation system by information
Send and receive, be then reduced to initial data.Most of smart mobile phone on market is equipped with and connects photosensor
Device, it can launch voluntarily Infrared and receive optical signal to determine whether object proximity or away from, and
Report AP chip, if object proximity, notify that mobile phone A P chip is closed LCD backlight and reduced system power dissipation, far
From time then notify that mobile phone A P chip opens LCD.
The function that proximity transducer will be used can to launch and receive optical signal herein, it is achieved mobile phone is closely without spoke
Penetrate P2P secure communication.
1, proximity transducer:
Proximity transducer itself has infrared emission LED and infrared light detection two parts module.Infrared emission part
Can control to open or close by ppu, infrared receiver part can detect the light intensity received,
And export numerical value can by ppu read use.Generally, mobile phone A P chip controls infrared emission mould
Block sends Infrared, detects, with by internal infrared detector, the infrared ray light quantity reflected, when
The when of having object on the path of infrared emitting, most infrared ray is reflected back to the infrared ray of inside
In detector, this detector can by the infrared ray light quantity that judgement receives determine object proximity or away from
State, can be reported the AP chip of mobile phone, AP chip control then close to sensor by this state by interruption
Function required for mobile phone processed realization.
2, digital information
Modern digital communication, represents information with basic binary digit, represents two kinds of different shapes with 1 with 0
State, all of complex information all can be converted into, by specific conversion, the word string only represented with 0 and 1, use two to enter
Tabulation shows that information is very beneficial for storage and the transmission of information, it constitutes the basis of modern digital communication.
Summary of the invention
It is an object of the invention to provide a kind of terminal digital information transmission method based on proximity transducer and dress
Put, solve in prior art because of the problem being unfavorable for product miniaturization containing complicated transmission circuit.
According to an aspect of the invention, it is provided a kind of terminal digital information transmission side based on proximity transducer
Method, comprises the following steps:
As sending the mobile phone of terminal and utilizing the foundation of respective proximity transducer logical as the mobile phone receiving terminal
Letter link；
After setting up described communication link, described transmission terminal is by being switched on and off by Binary Zero and 1 information
Its proximity transducer, produces corresponding to Binary Zero and the discontinuous signal of 1 information；
Described reception terminal receives described discontinuous signal with its proximity transducer, thus obtains sending the two of terminal and enter
System 0 and 1 information.
Preferably, described described transmission terminal is by being switched on and off it close to passing by Binary Zero and 1 information
Sensor, produces the discontinuous signal corresponding to Binary Zero and 1 information and includes:
Described transmission terminal, by closing its proximity transducer by Binary Zero information, produces corresponding to Binary Zero
First discontinuous signal of information；
Described transmission terminal, by connecting its proximity transducer by binary one information, produces corresponding to binary one
Second discontinuous signal of information.
Preferably, described described reception terminal receives described discontinuous signal with its proximity transducer, thus obtains
The Binary Zero and 1 information that send terminal include:
When described reception terminal receives described second discontinuous signal with its proximity transducer, receive described transmission
The Binary Zero of terminal transmission and the packet of 1 information.
Preferably, also include:
Raw information waiting for transmission is converted into Binary Zero and the packet of 1 information by described transmission terminal, and will
It is saved in the buffer area of described transmission terminal.
Preferably, also include:
Described reception terminal receives Binary Zero and the multiple packets of 1 information that described transmission terminal sends
After, the Binary Zero included in multiple packets that will be received and 1 information reverting are raw information, and will
It is saved in the buffer area of described reception terminal.
Preferably, send terminal to described reception terminal described in and send Binary Zero and multiple packets of 1 information
In be respectively equipped with check information, in order to utilize described check information distinguish described packet.
According to a further aspect in the invention, it is provided that a kind of terminal digital information transmission based on proximity transducer fills
Put, including:
Set up communication link module, for as sending the mobile phone of terminal and utilizing each as the mobile phone receiving terminal
From proximity transducer set up communication link；
Producing discontinuous signal module, for after setting up described communication link, described transmission terminal is by entering with two
System 0 and 1 information is switched on and off its proximity transducer, produces the interrupted letter corresponding to Binary Zero and 1 information
Number；
Receiver module, receives described discontinuous signal for described reception terminal with its proximity transducer, thus obtains
Send Binary Zero and 1 information of terminal.
Preferably, described generation discontinuous signal module includes:
First discontinuous signal unit, for described transmission terminal by closing it close to sensing by Binary Zero information
Device, produces the first discontinuous signal corresponding to Binary Zero information；
Second discontinuous signal unit, for described transmission terminal by connecting it close to sensing by binary one information
Device, produces the second discontinuous signal corresponding to binary one information.
Preferably, described receiver module includes:
Receive unit, for receiving described second discontinuous signal when described reception terminal with its proximity transducer
Time, receive Binary Zero and the packet of 1 information that described transmission terminal sends.
Preferably, also include:
Storage unit, is converted into Binary Zero and 1 information for described transmission terminal by raw information waiting for transmission
Packet, and be saved into the buffer area of described transmission terminal.
Compared with prior art, the beneficial effects of the present invention is:
The present invention is by realizing basic half-duplex operation close to optical sensor；By contrast, range phase therewith
Near NFC technique needs the coil antenna that complicated external circuit, special transceiving chip and area is the biggest, carries
High product cost and design complexities, be unfavorable for the miniaturization of end product；And the biography of the medium and long distances such as bluetooth
Transmission protocol equipment constitutes complexity, relates to standard patent more, is unfavorable for product cost declining；Infrared transceiver module needs
Want special modular circuit；And the present invention realizes circuit simply, can be as closely point-to-point communication mode
A kind of the most supplementary.
Accompanying drawing explanation
Fig. 1 is a kind of based on proximity transducer the terminal digital information transmission method that the embodiment of the present invention provides
Flow chart；
Fig. 2 is a kind of based on proximity transducer the terminal digital information transmission device that the embodiment of the present invention provides
Schematic diagram；
Fig. 3 is that the close of two mobile terminals that the embodiment of the present invention provides passes device signal processing schematic diagram；
Fig. 4 is the flow chart that the data between two mobile terminals that the embodiment of the present invention provides send and receive.
Detailed description of the invention
Below in conjunction with accompanying drawing to a preferred embodiment of the present invention will be described in detail, it will be appreciated that described below
Preferred embodiment be merely to illustrate and explain the present invention, be not intended to limit the present invention.
Fig. 1 shows a kind of based on proximity transducer the terminal digital information transmission that the embodiment of the present invention provides
Method flow diagram, as it is shown in figure 1, comprise the following steps:
Step S101: as sending the mobile phone of terminal and utilizing as the mobile phone receiving terminal respective close to passing
Sensor sets up communication link；
Step S102: after setting up described communication link, described transmission terminal is by believing with Binary Zero and 1
Breath is switched on and off its proximity transducer, produces corresponding to Binary Zero and the discontinuous signal of 1 information；
Step S103: described reception terminal receives described discontinuous signal with its proximity transducer, thus is sent out
Make arrangements for his funeral end Binary Zero and 1 information.
Wherein, described described transmission terminal is by being switched on and off it close to passing by Binary Zero and 1 information
Sensor, produces the discontinuous signal corresponding to Binary Zero and 1 information and includes: described transmission terminal is by entering with two
0 information of making closes its proximity transducer, produces the first discontinuous signal corresponding to Binary Zero information；Described
Make arrangements for his funeral and hold by connecting its proximity transducer by binary one information, produce corresponding to the second of binary one information
Discontinuous signal.Described described reception terminal receives described discontinuous signal with its proximity transducer, thus is sent out
Make arrangements for his funeral the Binary Zero of end and 1 information includes: when its proximity transducer of described reception terminal receives described the
During two discontinuous signals, receive Binary Zero and the packet of 1 information that described transmission terminal sends.
Present invention additionally comprises: raw information waiting for transmission is converted into Binary Zero and 1 letter by described transmission terminal
The packet of breath, and it is saved into the buffer area of described transmission terminal.
Present invention additionally comprises: described reception terminal receives Binary Zero and 1 letter that described transmission terminal sends
After multiple packets of breath, the Binary Zero included in multiple packets that will be received and 1 information reverting are
Raw information, and it is saved into the buffer area of described reception terminal.
Wherein, send terminal to described reception terminal described in and send Binary Zero and multiple packets of 1 information
In be respectively equipped with check information, in order to utilize described check information distinguish described packet.
Fig. 2 shows a kind of based on proximity transducer the terminal digital information transmission that the embodiment of the present invention provides
Device schematic diagram, as in figure 2 it is shown, include: set up communication link module 201, produce discontinuous signal module 202
And receiver module 203.Described set up communication link module 201, for as the mobile phone of transmission terminal and work
Respective proximity transducer is utilized to set up communication link for receiving the mobile phone of terminal；Described generation discontinuous signal module
202, for after setting up described communication link, described transmission terminal is by connecting by Binary Zero and 1 information
With its proximity transducer of closedown, produce corresponding to Binary Zero and the discontinuous signal of 1 information；Described receiver module
203, receive described discontinuous signal for described reception terminal with its proximity transducer, thus obtain sending terminal
Binary Zero and 1 information.
Specifically, described generation discontinuous signal module 202 includes: the first discontinuous signal unit, is used for
Described transmission terminal, by closing its proximity transducer by Binary Zero information, produces corresponding to Binary Zero information
The first discontinuous signal；Second discontinuous signal unit, for described transmission terminal by connecing by binary one information
Its proximity transducer logical, produces the second discontinuous signal corresponding to binary one information.Described receiver module
203 include: receive unit, for receiving described second interrupted with its proximity transducer when described reception terminal
During signal, receive Binary Zero and the packet of 1 information that described transmission terminal sends.
Present invention additionally comprises: storage unit, for described transmission terminal, raw information waiting for transmission is converted into
Binary Zero and the packet of 1 information, and it is saved into the buffer area of described transmission terminal.
Fig. 3 shows that the close of two mobile terminals that the embodiment of the present invention provides passes device signal processing schematic diagram,
As it is shown on figure 3, include mobile phone A and mobile phone B.
1, first information to be transmitted is converted into binary data, the most only 0 and 1 sequence represented, will
Data are put in the middle of caching standby, then pass through AP chip controls infrared emission LED close to optical sensor, with
These 0,1 sequences open and close infrared emission LED.AP chip controls LED closes expression information 0, with LED
Open expression information 1.In this way can obtain in data communication use emitter, infrared light have and
Without representing information 1 and 0, if there being one just can read transmitting terminal with the reception device of sensing light change
Change.
2, also have an infrared light detection part owing to proximity transducer is internal, it can with perception receive red
The strong and weak change of outer light, all can outwards produce one when the infrared ray received exceedes or is less than a certain thresholding
Interrupt signal, informs that the optical signal of mobile phone A P chip exterior has occurred and that change, AP chip are now read close to light
Data in sensor, if reading is expressed as 1 more than high light intensity threshold value, represent 0 less than light intensity thresholding, are situated between
Error code is represented between two thresholdings.The threshold value of general high light intensity is more than low light intensity threshold value.
3, for realizing data transmission, it is desirable to have opening close to optical sensor of two mobile phones simultaneously.Two mobile phones
Between data interaction only open the infrared emission close to optical sensor with semiduplex communication pattern, i.e. A mobile phone
LED, represents transmission 1 and 0 information by the either on or off of LED, and the infrared inspection close to optical sensor only opened by B mobile phone
Survey module, by coordinating the information sequence receiving 1 and 0 with mobile phone A P chip, be stored in corresponding slow after receiving information
Deposit central pending, be then converted to other message form by AP chip.So complete an essential information
Sending and receive, its signal flow diagram is as shown in Figure 1.
4, in order to strengthen the quality of communication, the information of transmitting can use specific coding tools to pack it,
Make it comprise check information, after receiving terminal receives an information bag, the information received can be verified, as
Fruit occurs that error code then abandons the information received；Need to carry out in place of setting up communication linkage certain shake hands mutual,
I.e. A mobile phone sends the sequence of request communication, within a specified time receives the reply sequence allowing communication that B mobile phone sends
After row, continue to send next packet；If without replying, retransmitted etc. after the time to be specified, if retransmitting the most still
Communication is then interrupted without replying.
Fig. 4 shows the flow process that the data between two mobile terminals that the embodiment of the present invention provides send and receive
Figure, as shown in Figure 4, comprises the following steps:
The first step: in data issuing side (mobile phone A) by data conversion module by initial data piecemeal, packing,
It is converted into the data sequence fitting through proximity transducer transmission, is stored in data in mobile phone caching, waits AP
Controller is taken, subsequently into next step.
Second step: AP controller (mobile phone A end) controls to pass through close to optical sensor according to the sequence of 0 and 1
Infrared LED sends the default packet established the link, and then waits that mobile phone B gives a response, now B mobile phone
Open close to optical sensor receiving path.If mobile phone do not received by (such as 1ms) A mobile phone at the appointed time
The response bag agreeing to link that B beams back, mobile phone A can send request again, if (example in regulation request number of times
Such as 10 times) B mobile phone the most do not responds, then A mobile phone interrupt requests, and return, to user, the letter that request is failed
Breath.If receiving B mobile phone method to send the packet agreeing to link, and being received by A mobile phone, mobile phone A then starts
Next step sends the data needing transmission.
3rd step: after A, B mobile phone establishes the link, A mobile phone starts to send first packet to B mobile phone,
Then A mobile phone waits the reception normal response bag that B mobile phone sends.If at the appointed time (such as 1ms)
A mobile phone does not receive the correct response of B mobile phone, and A mobile phone can resend at a certain time interval and just now send out
The packet sent；If it exceeds stipulated number (such as 10 times), A mobile phone is returned to telex network failure
Information；If B mobile phone sends response bag within stipulated time and stipulated number and is received by A mobile phone, A
Mobile phone begins to be ready for sending second packet, and each packet has the packet header of sequence information, is used for distinguishing
The order of the most several packets.By that analogy, until all data are sent, after send to B mobile phone
End packet, is used for terminating transmission.And the information of end of transmission is reported to A mobile phone.
4th step: B mobile phone sends same after the request bag that the request receiving A mobile phone for the first time establishes the link immediately
The response bag of meaning link；If receive is packet, first carry out CRC check, if data correctly, are deposited
In mobile phone inner buffer, and send the normal response bag of reception to mobile phone A；If the data received are the most just
True then abandon this data；If it is identical with the packet sequence number in caching to receive next packet, then abandon this
Bag.Data processing module is transmitted directly to for the packet mobile phone B in caching and resolves to initial data for mobile phone
Use.If receiving the ending message that mobile phone A sends, then report the information received to B mobile phone, finally
The data parsing received, it is reduced into the initial data of transmission.
The present invention is the digital information transmission utilizing proximity transducer to realize between two mobile phones, has following the most excellent
Point:
1, it has widened the range of application of proximity transducer, is simultaneously achieved a kind of new data in mobile phone transmission side
Formula, has provided the user more enriching experiences.
2, use close to optical sensor as data communication owing to operating distance is short, do not have electromagnetic radiation, communication
Disguised high, power is low radiationless to human body, can and wireless data transmission mode wired as other effective
Supplement.
3, without complicated external circuit, design is easy easily to be realized, beneficially end product cost declining.
Although above the present invention being described in detail, but the invention is not restricted to this, the art technology
Personnel can carry out various amendment according to the principle of the present invention.Therefore, all amendments made according to the principle of the invention,
All should be understood to fall into protection scope of the present invention.
Claims (10)
1. a terminal digital information transmission method based on proximity transducer, it is characterised in that include following
Step:
As sending the mobile phone of terminal and utilizing the foundation of respective proximity transducer logical as the mobile phone receiving terminal
Letter link；
After setting up described communication link, described transmission terminal is by being switched on and off by Binary Zero and 1 information
Its proximity transducer, produces corresponding to Binary Zero and the discontinuous signal of 1 information；
Described reception terminal receives described discontinuous signal with its proximity transducer, thus obtains sending the two of terminal and enter
System 0 and 1 information.
Method the most according to claim 1, it is characterised in that described described transmission terminal is by using
Binary Zero and 1 information are switched on and off its proximity transducer, and produce corresponding to Binary Zero and 1 information is disconnected
Continuous signal includes:
Described transmission terminal, by closing its proximity transducer by Binary Zero information, produces corresponding to Binary Zero
First discontinuous signal of information；
Described transmission terminal, by connecting its proximity transducer by binary one information, produces corresponding to binary one
Second discontinuous signal of information.
Method the most according to claim 2, it is characterised in that described described reception terminal connects with it
Nearly sensor receives described discontinuous signal, thus obtains sending the Binary Zero of terminal and 1 information includes:
When described reception terminal receives described second discontinuous signal with its proximity transducer, receive described transmission
The Binary Zero of terminal transmission and the packet of 1 information.
Method the most according to claim 1, it is characterised in that also include:
Raw information waiting for transmission is converted into Binary Zero and the packet of 1 information by described transmission terminal, and will
It is saved in the buffer area of described transmission terminal.
Method the most according to claim 4, it is characterised in that also include:
Described reception terminal receives Binary Zero and the multiple packets of 1 information that described transmission terminal sends
After, the Binary Zero included in multiple packets that will be received and 1 information reverting are raw information, and will
It is saved in the buffer area of described reception terminal.
6. according to the arbitrary described method of claim 1-5, it is characterised in that described in send terminal to described
Receive in multiple packets of terminal transmission Binary Zero and 1 information and be respectively equipped with check information, in order to utilize institute
State check information and distinguish described packet.
7. a terminal digital information transmission device based on proximity transducer, it is characterised in that including:
Set up communication link module, for as sending the mobile phone of terminal and utilizing each as the mobile phone receiving terminal
From proximity transducer set up communication link；
Producing discontinuous signal module, for after setting up described communication link, described transmission terminal is by entering with two
System 0 and 1 information is switched on and off its proximity transducer, produces the interrupted letter corresponding to Binary Zero and 1 information
Number；
Receiver module, receives described discontinuous signal for described reception terminal with its proximity transducer, thus obtains
Send Binary Zero and 1 information of terminal.
Device the most according to claim 1, it is characterised in that described generation discontinuous signal module bag
Include:
First discontinuous signal unit, for described transmission terminal by closing it close to sensing by Binary Zero information
Device, produces the first discontinuous signal corresponding to Binary Zero information；
Second discontinuous signal unit, for described transmission terminal by connecting it close to sensing by binary one information
Device, produces the second discontinuous signal corresponding to binary one information.
Device the most according to claim 2, it is characterised in that described receiver module includes:
Receive unit, for receiving described second discontinuous signal when described reception terminal with its proximity transducer
Time, receive Binary Zero and the packet of 1 information that described transmission terminal sends.
Device the most according to claim 7, it is characterised in that also include:
Storage unit, is converted into Binary Zero and 1 information for described transmission terminal by raw information waiting for transmission
Packet, and be saved into the buffer area of described transmission terminal.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510198342.3A CN106162518A (en) | 2015-04-23 | 2015-04-23 | A kind of terminal digital information transmission method based on proximity transducer and device |
| PCT/CN2015/078813 WO2016169071A1 (en) | 2015-04-23 | 2015-05-12 | Digital information transmission method and device for terminal based on proximity sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510198342.3A CN106162518A (en) | 2015-04-23 | 2015-04-23 | A kind of terminal digital information transmission method based on proximity transducer and device |
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| CN106162518A true CN106162518A (en) | 2016-11-23 |
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|---|---|---|---|
| CN201510198342.3A Pending CN106162518A (en) | 2015-04-23 | 2015-04-23 | A kind of terminal digital information transmission method based on proximity transducer and device |
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| CN (1) | CN106162518A (en) |
| WO (1) | WO2016169071A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109961621A (en) * | 2017-12-22 | 2019-07-02 | 中国电信股份有限公司 | Automatic meter reading method, device, system and ammeter |
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| CN109961621B (en) * | 2017-12-22 | 2021-07-23 | 中国电信股份有限公司 | Automatic meter reading method, device and system and electric meter |
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| Publication number | Publication date |
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| WO2016169071A1 (en) | 2016-10-27 |
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