CN106570435A - Active card communication system and method based on working clock calibration - Google Patents
Active card communication system and method based on working clock calibration Download PDFInfo
- Publication number
- CN106570435A CN106570435A CN201610996823.3A CN201610996823A CN106570435A CN 106570435 A CN106570435 A CN 106570435A CN 201610996823 A CN201610996823 A CN 201610996823A CN 106570435 A CN106570435 A CN 106570435A
- Authority
- CN
- China
- Prior art keywords
- card
- active card
- clock
- active
- module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
- G06K19/07749—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Toxicology (AREA)
- Health & Medical Sciences (AREA)
- Theoretical Computer Science (AREA)
- Electromagnetism (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Artificial Intelligence (AREA)
- General Health & Medical Sciences (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Credit Cards Or The Like (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
- Electric Clocks (AREA)
Abstract
The invention discloses an active card communication system and method based on working clock calibration. The active card communication system comprises card reading equipment and an active card, wherein the card reading equipment and the active card establish communication wirelessly. An equipment counter is arranged inside the card reading equipment in a built-in mode. A clock calibration module and a card counter are arranged in the active card in a built-in manner. The clock calibration module is used for determining whether a counting value of the equipment counter is equal to a counting value of the card counter after communication establishment between the card reading equipment and the active card; if so, a work clock calibration course is completed; and if not, the counting value of the equipment counter is written into the card counter and thus working clocks of the card reading equipment and the active card are synchronized and then the working clock calibration course is completed. Therefore, the communication success rate can be improved; the service life of the active card can be prolonged; and the active card can be maintained, upgraded, and recycled conveniently.
Description
Technical field
The present invention relates to active card communication system, more particularly to a kind of active card communication system calibrated based on work clock
And method.
Background technology
Active card is that, by battery powered wireless device, its important technical requirements is low-power consumption, is that raising uses the longevity
Life, can arrange doze output in active card, control the work and dormancy of active card by timing, so as to reduce power consumption.
RFID active cards clock adopts inside RC agitators mostly at present, is affected by RC oscillator precisions, and is powered by battery
The error brought by voltage, causes internal dormancy intervalometer timing to be forbidden, and clock jitter is very big (typically ± 20%), with
The accumulative of timer counter, clock jitter will be increasing, particularly when active card is communicated with card-reading apparatus, due in the presence of
Clock deviation so that the sequential of active card can not be synchronous with the sequential of card-reading apparatus, and then cannot be communicated, active card now
Can be identified as having reached service life.As can be seen here, same batch, to there is service life gap in the active card of same size big
Problem, it is difficult to meet the demand of high life, when active card as the reduction of the deviation and cell voltage of RC agitators causes phase
The too early end-of-life of portioned product of same batch when same specification active card dormancy time has relatively large deviation, just occurs, gives
Product maintenance, upgrading, recovery cause greatly constant.
The content of the invention
The technical problem to be solved in the present invention is, for the deficiencies in the prior art, there is provided it is a kind of can be to active card
Work clock is calibrated, and then is improved communication success rate, improved active card service life, be easy to active card is carried out safeguarding,
Upgrading, the active card communication system for reclaiming and method.
To solve above-mentioned technical problem, the present invention is adopted the following technical scheme that.
A kind of active card communication system calibrated based on work clock, which includes card-reading apparatus and active card, and the two
Communication is set up wirelessly, the card-reading apparatus are built-in with unit count device, and the active card is built-in with clock alignment mould
Block and card counters, the clock alignment module are used for after the card-reading apparatus and active card set up communication, judge equipment meter
Whether the count value of number device is equal with the count value of card counters：If equal, power cut-off clock alignment process；If not phase
Deng then by the count value write card counters of unit count device, to make the work clock synchronization of card-reading apparatus and active card, afterwards
Power cut-off clock alignment process.
Preferably, the card-reading apparatus include control module, and the control module is electrically connected with radio-frequency module；It is described
Active card includes control unit, and described control unit is electrically connected with radio frequency unit；The radio-frequency module and radio frequency unit are built
Vertical wireless connection, the control module carry out data interaction based on the wireless connection with control unit.
Preferably, the operating frequency of the radio-frequency module and radio frequency unit is 13.56MHz.
Preferably, described control unit is electrically connected with：Clock oscillator, for providing clock frequency letter for control unit
Number；Memorizer, for data storage；Battery, for providing power supply.
Preferably, the clock alignment module is electrically connected at control unit, and the clock alignment module is used to perform control
The control instruction of unit processed and clock alignment is operated to active card.
Preferably, the control module is electrically connected with external interface, and the external interface is used to connect host computer.
A kind of active card communication means calibrated based on work clock, the method is based on system realization, the system bag
Card-reading apparatus and active card are included, the card-reading apparatus and active card wirelessly set up communication, in the card-reading apparatus
Unit count device is equipped with, the active card is built-in with clock alignment module and card counters, and methods described comprises the steps：Step
Rapid S1：The card-reading apparatus and active card set up communication；Step S2, the clock alignment module judge the counting of unit count device
Whether value is equal with the count value of card counters：If equal, execution step S4, if unequal, execution step S3；Step
The count value of unit count device is write card counters by S3, the clock alignment module, to make the work of card-reading apparatus and active card
Make clock synchronization, afterwards execution step S4；Step S4, power cut-off clock alignment process.
Preferably, the card-reading apparatus include control module, and the control module is electrically connected with radio-frequency module；It is described
Active card includes control unit, and described control unit is electrically connected with radio frequency unit；The radio-frequency module and radio frequency unit are built
Vertical wireless connection, the control module carry out data interaction based on the wireless connection with control unit.
Preferably, in step S1, the card-reading apparatus send radiofrequency signal by radio-frequency module and radiate in active
Radiofrequency signal is converted to electric energy using radio frequency unit by card, the active card, until after control unit obtains running voltage, to reading
Card apparatus send response instruction, and then set up wireless connection.
Preferably, described control unit is electrically connected with memorizer, and in step S3, the clock alignment module will set
During the count value write card counters of standby enumerator, the count value is write into memorizer also.
It is disclosed by the invention based on work clock calibrate active card communication system and method in, first by card-reading apparatus with
Active card sets up communication, judges whether card-reading apparatus are equal with the clock count of active card using clock alignment module afterwards, if
It is equal, the timing synchronization of the two, and energy proper communication are illustrated, then without the need for calibration, returns to communication mastery routine；If unequal, say
The bright sequential of the two can not be synchronous, it is impossible to carries out normal data transfer, now, by the count value write calorimeter of unit count device
Number device so that the work clock synchronization of card-reading apparatus and active card, power cut-off clock alignment process, jumps to Card Reader and set afterwards
It is standby with active cartoon letters mastery routine.The present invention realizes the work clock to active card using clock alignment module and calibrates, significantly
The communication success rate of active card and card-reading apparatus is improve, the service life of active card is improve, contributes to carrying out active card
Safeguard, upgrade, reclaim.
Description of the drawings
Fig. 1 is the composition frame chart of the active card communication system that the present invention is calibrated based on work clock.
The flow chart of active card communication means of the Fig. 2 to be calibrated based on work clock in the preferred embodiment of the present invention.
Specific embodiment
With reference to the accompanying drawings and examples the present invention is described in more detail.
The invention discloses a kind of active card communication system calibrated based on work clock, as shown in figure 1, which includes reading
Card apparatus 1 and active card 2, and the two wirelessly sets up communication, the card-reading apparatus 1 are built-in with unit count device 3, institute
State active card 2 and be built-in with clock alignment module 4 and card counters 5, the clock alignment module 4 is used for when the card-reading apparatus 1
Set up after communication with active card 2, judge whether the count value of unit count device 3 is equal with the count value of card counters 5：
If equal, power cut-off clock alignment process；
If unequal, by the count value write card counters 5 of unit count device 3, to make card-reading apparatus 1 and active card 2
Work clock synchronization, power cut-off clock alignment process afterwards.
In above-mentioned active card communication system, set up with active card 2 by card-reading apparatus 1 first and communicated, afterwards using clock school
Quasi-mode block 4 judges whether card-reading apparatus 1 are equal with the clock count of active card 2, if equal, illustrates the timing synchronization of the two, and
Energy proper communication, then without the need for calibration, return to communication mastery routine；If unequal, illustrate that the sequential of the two can not be synchronous, it is impossible to enter
The normal data transfer of row, now, by the count value write card counters 5 of unit count device 3 so that card-reading apparatus 1 and active
The work clock synchronization of card 2, afterwards power cut-off clock alignment process are jumped to card-reading apparatus 1 and are communicated with active card 2 main journey
Sequence.Wherein, when the count value write card counters 5 of unit count device 3, now store in unit count device 3 and card counters 5
Count value it is identical, the count value is the integral multiple of clock cycle, and during control unit execute instruction, each performs one clock cycle
Step instruction, so when unit count device 3 is identical with the count value of card counters 5, the clock cycle of the two is also synchronous therewith, makes
Obtain sequential of the card-reading apparatus 1 with active card 2 in the process of implementation also identical, thus work clock is realized in data transmission procedure
It is synchronous.
The present invention realizes the work clock to active card using clock alignment module 4 and calibrates, and substantially increases active card
With the communication success rate of card-reading apparatus, the service life of active card is improve, contribute to active card is carried out safeguarding, upgrades, returns
Receive.
With regard to card-reading apparatus and the concrete structure of active card：
The card-reading apparatus 1 include control module 6, and the control module 6 is electrically connected with radio-frequency module 7；
The active card 2 includes control unit 8, and described control unit 8 is electrically connected with radio frequency unit 9；
The radio-frequency module 7 and radio frequency unit 9 set up wireless connection, and the control module 6 is based on the nothing with control unit 8
Line connects and carries out data interaction.Further, the operating frequency of the radio-frequency module 7 and radio frequency unit 9 is 13.56MHz.
With regard to the further structure of active card, described control unit 8 is electrically connected with clock oscillator 10,11 and of memorizer
Battery 12, wherein：
Clock oscillator 10 is used to provide clock frequency signal for control unit 8；
Memorizer 11 is used for data storage；
Battery 12 is used to provide power supply.
With regard to the further structure of card-reading apparatus, the clock alignment module 4 is electrically connected at control unit 8, when described
Clock calibration module 4 is used to perform the control instruction of control unit 8 and be operated clock alignment to active card 2.In the present embodiment,
The clock alignment module 4 preferably loads on the segment subprogram inside control unit 8, in addition, the clock alignment module
Can also perform with the chip performing module constituted by respective code from one piece, both the above mode can realize this
The function of bright middle clock alignment module, therefore should be included within protection scope of the present invention.
In order to carry out wire communication with host computer, the control module 6 is electrically connected with external interface 13, and the outside connects
Mouth 13 is used to connect host computer.
Invention additionally discloses a kind of active card communication means calibrated based on work clock, with reference to shown in Fig. 1 and Fig. 2, should
Method realizes that based on a system system includes card-reading apparatus 1 and active card 2, and the card-reading apparatus 1 and active card 2 are logical
Cross wireless mode and set up communication, the card-reading apparatus 1 are built-in with unit count device 3, and the active card 2 is built-in with clock alignment mould
Block 4 and card counters 5, methods described comprises the steps：
Step S1：The card-reading apparatus 1 and active card 2 set up communication；
Step S2, the clock alignment module 4 judge that the count value of unit count device 3 and the count value of card counters 5 are
It is no equal：If equal, execution step S4, if unequal, execution step S3；
The count value of unit count device 3 is write card counters 5 by step S3, the clock alignment module 4, to make Card Reader set
Standby 1 and the work clock synchronization of active card 2, execution step S4 afterwards；
Step S4, power cut-off clock alignment process.
In the above-mentioned methods, the work clock to active card is realized using clock alignment module 4 to calibrate, substantially increase
Active card and the communication success rate of card-reading apparatus, improve the service life of active card.
With regard to the concrete composition of system, the card-reading apparatus 1 include control module 6, and the control module 6 is electrically connected with
There is radio-frequency module 7；The active card 2 includes control unit 8, and described control unit 8 is electrically connected with radio frequency unit 9；It is described
Radio-frequency module 7 and radio frequency unit 9 set up wireless connection, and the control module 6 is carried out based on the wireless connection with control unit 8
Data interaction.
On this basis, in order to realize completing to communicate in the state of low battery in active card, in step S1, institute
State card-reading apparatus 1 to send radiofrequency signal by radio-frequency module 7 and radiate in active card 2, the active card 2 utilizes radio frequency unit 9
Radiofrequency signal is converted to into electric energy, until after control unit 8 obtains running voltage, response instruction is sent to card-reading apparatus 1, and then
Set up wireless connection.Wherein, after active card 2 is near card-reading apparatus 1, obtain the energy in the radiofrequency signal that radio-frequency module 7 sends
Amount, and electric energy is converted to, it is that control unit 8 provides running voltage, when 8 normal work of control unit, by card-reading apparatus 1
Send response instruction so that card-reading apparatus 1 are set up with active card 2 and are wirelessly connected
Used as a kind of optimal way, in order to store the count value that card-reading apparatus 1 are sent, described control unit 8 is electrically connected with
There is memorizer 11, in step S3, when the count value of unit count device 3 is write card counters 5, also the count value is write
Memorizer 11.
In the active card communication system calibrated based on work clock disclosed by the invention and method, the electricity in active card
Afterwards, the 13.56M clocks for being radiated using active card card-reading apparatus, are active card calibration module running voltage and clock.Work as active card
After being put into 13.56M effective coverages, reader device is waited to send effective work order, after receiving the instruction, active card can be certainly
It is dynamic to count, while compared with the internal count value of active card, so as to judge whether to need to calibrate clock, if desired calibrating, just
More new count value, while new count value is write memorizer.If detection finds no need for calibration or calibrated mistake, then
Skip calibrations are operated.The present invention contributes to active card is carried out safeguarding, upgrades, reclaims.
The above is preferred embodiments of the present invention, is not limited to the present invention, all technology models in the present invention
Enclose interior done modification, equivalent or improvement etc., should be included in the present invention it is protected in the range of.
Claims (10)
1. a kind of active card communication system calibrated based on work clock, it is characterised in that include card-reading apparatus (1) and active
Card (2), and the two wirelessly sets up communication, the card-reading apparatus (1) are built-in with unit count device (3), described active
Card (2) is built-in with clock alignment module (4) and card counters (5), and the clock alignment module (4) is for when the card-reading apparatus
(1) set up after communication with active card (2), judge the count value of the count value of unit count device (3) and card counters (5) whether phase
Deng：
If equal, power cut-off clock alignment process；
If unequal, by count value write card counters (5) of unit count device (3), to make card-reading apparatus (1) and active card
(2) work clock synchronization, afterwards power cut-off clock alignment process.
2. the active card communication system calibrated based on work clock as claimed in claim 1, it is characterised in that the Card Reader sets
Standby (1) includes control module (6), and the control module (6) is electrically connected with radio-frequency module (7)；
The active card (2) includes control unit (8), and described control unit (8) is electrically connected with radio frequency unit (9)；
The radio-frequency module (7) and radio frequency unit (9) set up wireless connection, and the control module (6) is based on control unit (8)
This is wireless to connect and carries out data interaction.
3. the active card communication system calibrated based on work clock as claimed in claim 2, it is characterised in that the radio frequency mould
The operating frequency of block (7) and radio frequency unit (9) is 13.56MHz.
4. the active card communication system calibrated based on work clock as claimed in claim 2, it is characterised in that the control list
First (8) are electrically connected with：
Clock oscillator (10), for providing clock frequency signal for control unit (8)；
Memorizer (11), for data storage；
Battery (12), for providing power supply.
5. the active card communication system calibrated based on work clock as claimed in claim 2, it is characterised in that the clock school
Quasi-mode block (4) is electrically connected at control unit (8), and the clock alignment module (4) refers to for the control for performing control unit (8)
Make and clock alignment is operated to active card (2).
6. the active card communication system calibrated based on work clock as claimed in claim 2, it is characterised in that the control mould
Block (6) is electrically connected with external interface (13), and the external interface (13) is for connecting host computer.
7. it is a kind of based on work clock calibrate active card communication means, it is characterised in that the method based on a system realization, institute
The system of stating includes card-reading apparatus (1) and active card (2), and the card-reading apparatus (1) and active card (2) are wirelessly set up
Communication, the card-reading apparatus (1) are built-in with unit count device (3), the active card (2) be built-in with clock alignment module (4) and
Card counters (5), methods described comprises the steps：
Step S1：The card-reading apparatus (1) and active card (2) set up communication；
Step S2, the clock alignment module (4) judge the count value of unit count device (3) and the count value of card counters (5)
It is whether equal：If equal, execution step S4, if unequal, execution step S3；
The count value of unit count device (3) is write card counters (5) by step S3, the clock alignment module (4), to make Card Reader
The work clock synchronization of equipment (1) and active card (2), afterwards execution step S4；
Step S4, power cut-off clock alignment process.
8. the active card communication means calibrated based on work clock as claimed in claim 7, it is characterised in that the Card Reader sets
Standby (1) includes control module (6), and the control module (6) is electrically connected with radio-frequency module (7)；The active card (2) includes
There is control unit (8), described control unit (8) is electrically connected with radio frequency unit (9)；The radio-frequency module (7) and radio frequency unit
(9) wireless connection is set up, the control module (6) carries out data interaction based on the wireless connection with control unit (8).
9. the active card communication means calibrated based on work clock as claimed in claim 8, it is characterised in that step S1
In, the card-reading apparatus (1) send radiofrequency signal by radio-frequency module (7) and radiate in active card (2), the active card (2)
Radiofrequency signal is converted to into electric energy using radio frequency unit (9), until after control unit (8) obtains running voltage, to card-reading apparatus
(1) response instruction is sent, and then sets up wireless connection.
10. the active card communication means calibrated based on work clock as claimed in claim 8, it is characterised in that the control
Unit (8) is electrically connected with memorizer (11), and in step S3, the clock alignment module (4) is by unit count device (3)
During count value write card counters (5), also by count value write memorizer (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610996823.3A CN106570435B (en) | 2016-11-12 | 2016-11-12 | A kind of active card communication system and method based on work clock calibration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610996823.3A CN106570435B (en) | 2016-11-12 | 2016-11-12 | A kind of active card communication system and method based on work clock calibration |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106570435A true CN106570435A (en) | 2017-04-19 |
| CN106570435B CN106570435B (en) | 2019-06-28 |
Family
ID=58542563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610996823.3A Active CN106570435B (en) | 2016-11-12 | 2016-11-12 | A kind of active card communication system and method based on work clock calibration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106570435B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101539987A (en) * | 2008-03-20 | 2009-09-23 | 上海锐帆信息科技有限公司 | Realization method for active read-only RFID |
| CN102799839A (en) * | 2011-05-23 | 2012-11-28 | 成都阿艾夫通信有限公司 | Method for synchronous awakening communication of active RFID (Radio Frequency Identification Devices) system |
| CN103714375A (en) * | 2013-09-26 | 2014-04-09 | 斯凯瑞利（北京）科技有限公司 | Active tag and radio frequency front-end chip thereof |
| CN204028953U (en) * | 2014-06-16 | 2014-12-17 | 浙江工业大学 | The active truck identity recognition device of a kind of RFID |
-
2016
- 2016-11-12 CN CN201610996823.3A patent/CN106570435B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101539987A (en) * | 2008-03-20 | 2009-09-23 | 上海锐帆信息科技有限公司 | Realization method for active read-only RFID |
| CN102799839A (en) * | 2011-05-23 | 2012-11-28 | 成都阿艾夫通信有限公司 | Method for synchronous awakening communication of active RFID (Radio Frequency Identification Devices) system |
| CN103714375A (en) * | 2013-09-26 | 2014-04-09 | 斯凯瑞利（北京）科技有限公司 | Active tag and radio frequency front-end chip thereof |
| CN204028953U (en) * | 2014-06-16 | 2014-12-17 | 浙江工业大学 | The active truck identity recognition device of a kind of RFID |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106570435B (en) | 2019-06-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103078393B (en) | USB hub and electric power supply method for the same | |
| CN106796563A (en) | For the system and method for chip to chip communication | |
| GB2565177A (en) | Electric energy meter, checking method therefor, and storage medium | |
| CN103116939B (en) | A kind of online charging system of radio-frequency card mobile phone and method | |
| CN103218638B (en) | A kind of method that MCU of utilization and double interface C PU realize the transmission of different radio frequency data | |
| CN103810521A (en) | Digital baseband processor for passive RFID (radio frequency identification) electronic tag | |
| CN104598962A (en) | Active passive type double-frequency chip and RFID system | |
| CN109740391B (en) | Electronic price tag and control method thereof, electronic price tag system and control method thereof | |
| CN107924217A (en) | Low ripple patterns of change mechanism in switched capacitor voltage adjuster | |
| CN101673220A (en) | Method for improving work parallelism of dual-interface SIM card | |
| CN103887856A (en) | Charging and discharging strategy and electric quantity display method of battery of Feiteng portable computer made in China | |
| KR20160121876A (en) | Changing method from sleep mode to awake mode in wifi system | |
| RU2625330C1 (en) | System and method for improved transmission power adaptation for wireless platform | |
| CN110490288A (en) | A kind of electronic labelling system that low-power consumption multi-protocols are compatible | |
| CN105426949A (en) | Method and device for low power consumption timing wake-up | |
| CN106570435A (en) | Active card communication system and method based on working clock calibration | |
| US20130219199A1 (en) | Clocking a processor | |
| CN204423400U (en) | A kind of RFID technique read write line for campus verification system | |
| CN103345610B (en) | The Apparatus and method for of fast verification intelligent card data integrality | |
| CN102331844B (en) | Adopt the key panel device of non-contact inductive technology | |
| CN213368158U (en) | Equipment configuration and firmware upgrading equipment based on NFC | |
| CN103996273A (en) | RFID watt hour meter electric energy information collection system and collection method | |
| CN104376488A (en) | Low-power-consumption electronic commodity price label and control method thereof | |
| CN206726016U (en) | A kind of coal yard loading machine vehicle-mounted integral terminal | |
| CN104183226A (en) | Mining intrinsic safety type micro-power-consumption wireless and wired communication self-powered multifunctional display terminal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 430000 building 01, building 15, optical valley wisdom Park, No.7, financial port 1st Road, Donghu New Technology Development Zone, Wuhan City, Hubei Province Patentee after: Wuhan ruinajie Semiconductor Co.,Ltd. Address before: 430073 building 01, building 15, optical valley wisdom Park, No.7, financial port 1st Road, Donghu New Technology Development Zone, Wuhan City, Hubei Province Patentee before: WUHAN RUINAJIE ELECTRONIC TECHNOLOGY Co.,Ltd. |
|
| CP03 | Change of name, title or address |