CN108053011A - The electronic tag display methods and its display device that low-power consumption is shown with screen with partitioned - Google Patents
The electronic tag display methods and its display device that low-power consumption is shown with screen with partitioned Download PDFInfo
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- CN108053011A CN108053011A CN201711364628.XA CN201711364628A CN108053011A CN 108053011 A CN108053011 A CN 108053011A CN 201711364628 A CN201711364628 A CN 201711364628A CN 108053011 A CN108053011 A CN 108053011A
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- 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
- G06K19/0701—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 at least one of the integrated circuit chips comprising an arrangement for power management
- G06K19/0702—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 at least one of the integrated circuit chips comprising an arrangement for power management the arrangement including a battery
- G06K19/0706—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 at least one of the integrated circuit chips comprising an arrangement for power management the arrangement including a battery the battery being replaceable
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K17/00—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations
- G06K17/0022—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations arrangements or provisious for transferring data to distant stations, e.g. from a sensing device
- G06K17/0029—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations arrangements or provisious for transferring data to distant stations, e.g. from a sensing device the arrangement being specially adapted for wireless interrogation of grouped or bundled articles tagged with wireless record carriers
-
- 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
- G06K19/07701—Constructional details, e.g. mounting of circuits in the carrier the record carrier comprising an interface suitable for human interaction
- G06K19/07703—Constructional details, e.g. mounting of circuits in the carrier the record carrier comprising an interface suitable for human interaction the interface being visual
- G06K19/07707—Constructional details, e.g. mounting of circuits in the carrier the record carrier comprising an interface suitable for human interaction the interface being visual the visual interface being a display, e.g. LCD or electronic ink
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Controls And Circuits For Display Device (AREA)
Abstract
The invention discloses the electronic tag display methods that a kind of low-power consumption is shown with screen with partitioned, include the following steps：Define picture element matrix；Obtain anchor point；Obtain display field；Encapsulate display field.It has the function of that same screen with partitioned is shown, so as to be partially completed update to need fresh information, other fixed informations then remain unchanged, and identical information is avoided to repeat transmission, and then saves energy consumption.Electronic tag display device is shown with screen with partitioned based on the low-power consumption of Internet of Things the invention also discloses a kind of, including：Several electronic tags, for showing information, the electronic tag is Electronic Paper screen；End interface is controlled, is communicated to connect by gateway and all electronic tags, the display information for control terminal to be exported is transmitted to the electronic tag and carries out multi-section display.It has the characteristics that low in energy consumption, simple in structure.
Description
Technical field
The invention belongs to the technical fields of presentation of information, and in particular to the electronic tag that a kind of low-power consumption is shown with screen with partitioned
Display methods and its display device.
Background technology
Label is a kind of carrier for being used to mark Item Information.Traditional approach is then generally using paper labels, and application is extensively
It is general, make simple, but there are following two shortcomings：
1st, cannot more new content, once content failure or partial information update, it is necessary to cancel, then print again.Its
It cannot reuse, cause the waste of resource, especially under the big environment of usage amount；
2nd, the display layout of format, i.e. content cannot be adjusted flexibly.In many applications (such as commodity on shelf price tag,
Cinema or the seat label of meeting room), the partial content (such as trade name and price or seat number) on each label is no
Together.Meanwhile separately print it is of high cost, and every time price adjustment or adjustment seat it is time-consuming and laborious.
In order to solve problems caused by paper labels traditional above, electronic tag is reusable with its, side
Just fresh information content, and the advantage of format can be adjusted flexibly, in the largely environment using label is needed, obtain very
Good utilization.But there is also, it is necessary to specific handheld device, realizing update to electronic tag one by one in renewal process, although
Solve the problems, such as waste, but the input of premise cost is larger, and be enough it is newer during, when can also expend substantial amounts of
Between and manpower.
Therefore, in order to solve the problems, such as that more than electronic tag is brought, China Patent Publication No. CN102708388A, title
For electronic labelling system, electronic tag and the method for updating electronic tag, by setting client host, middle central control end host and
Network of relation, while by conditioning unit and router, completed in the form of broadcast, but it has the following problems again：
1st, the soft hardware equipment of input is larger, and management and control is complicated, from cost, for general user, due to exist compared with
Big label usage amount, so usually can not all undertake its early investment expense and the maintenance cost in later stage；
2nd, it is complex since equipment is during information update, transmission and control, it is also desirable to substantial amounts of electricity is expended,
Also the problem of being difficult to reduce using the total power consumption of larger electronic tag is just accordingly resulted in；
3rd, during fresh information, for the information without change, it is also desirable to which uniform transmission simultaneously repeats to present, and that is to say can not be single
Single update processing solely is carried out to fresh information, so as to further result in the increase of power consumption.
The content of the invention
The problem of individually being updated for the partial information that solution must not only be updated needs, of the invention first
Purpose is：The electronic tag display methods that a kind of low-power consumption is shown with screen with partitioned is provided, has the function of that same screen with partitioned is shown,
So as to be partially completed update to need fresh information, other fixed informations then remain unchanged, and identical information is avoided to repeat transmission,
And then save energy consumption.
The electronic tag display methods that low-power consumption of the present invention is shown with screen with partitioned, includes the following steps：
It is picture element matrix by the entire screen cut and paste where electronic tag；
Obtained respectively in the picture element matrix two be located at different horizontal, ordinate anchor points (X1, Y1) and (X2,
Y2)；Wherein X1 and X2 represents the abscissa of anchor point, and Y1 and Y2 represent the ordinate of anchor point；
Obtain the display field needed for subregion；
The information of multi-section display is encapsulated by API in the display field, is shown with realizing with screen with partitioned.
Further, it is described obtain subregion needed for display field the step of be：With anchor point (X1, Y1) and (X2, Y2) point
Not Zuo Wei starting point and cut off, using | X1-X2 | as width, | Y1-Y2 | the display field of rectangle, remainder are set as height
It is divided into another display field.
Further, the number of the display field is determined by setting different anchor points.
In order to solve the problems, such as that early investment is of high cost, energy consumption is big, the second object of the present invention is：One kind is provided to be based on
The low power dissipation electron label display device of Internet of Things has the characteristics that super low energy consumption, simple in structure, at low cost.
To achieve the above object, the present invention is achieved by following technical scheme：
Low power dissipation electron label display device of the present invention based on Internet of Things, including：
Several electronic tags, for showing information, the electronic tag is Electronic Paper screen；
End interface is controlled, is communicated to connect by gateway and all electronic tags, for the display for exporting control terminal
Information is transmitted to the electronic tag and carries out multi-section display.
Further, the electronic tag is connected by ZigBee communication modules with gateway.
Further, the gateway uses A/C Alternating Current Power Supplies pattern and/or PoE patterns.
Further, the electronic tag is provided with word-information display area and coding viewing area.
Further, the bar code viewing area includes bar code and Quick Response Code.
Further, the control end interface is connected by WiFi communication module with gateway.
Further, the dynamic regulation sleep interval time tranfer that the control end interface is exported control terminal by gateway
To electronic tag, to set the different sleep times of electronic tag.
Compared with prior art, the beneficial effects of the invention are as follows：
The display methods of low power dissipation electron label of the present invention, first by being pixel square by entire screen cut and paste
Then battle array obtains two anchor points in the picture element matrix, to determine the display field needed for subregion, so as to which entire screen be carried out
It distinguishes, so as to independently show information needed in different display fields.
During the above method solves much information in the prior art while shows, partial information is being adjusted or is being updated
When, then it can individually complete, without carrying out transmitting and presenting again to full detail, therefore, to the part without fresh information
It keeps static motionless, so as to save the energy consumption brought during partial information update, also just accordingly considerably reduces whole
Energy consumption, and the renewal rate of information is faster.
Low power dissipation electron label display device of the present invention based on Internet of Things, by using Electronic Paper screen form
Electronic tag is situation once a day in refreshing frequency using single CR2032 button cell with super low-power consumption
Under, the usage time of 1 year can be maintained.Therefore, under environment or the situation for largely using electronic tag, can be substantially reduced
System maintenance cost.
Simultaneously as electronic tag shows information in the form of multi-section display so that is needed on same electronic tag same
When show much information, and when only needing to update which part information, then can accomplish to need newer partial information to update,
The state that other information can remain unchanged, so as to reduce further control terminal via control end interface and the transmission work(of gateway
Power consumption needed for consumption and fresh information, also just correspondingly reduces power consumption of the information during update and presentation.
Description of the drawings
The specific embodiment of the present invention is described in further detail below in conjunction with the accompanying drawings, wherein：
Fig. 1 is the flow chart for the electronic tag display methods that low-power consumption of the present invention is shown with screen with partitioned；
Fig. 2 is that low-power consumption of the present invention obtains showing needed for subregion with the electronic tag display methods that screen with partitioned is shown
Show the simplified schematic diagram in domain；
Fig. 3 is the framework map of the low power dissipation electron label display device of the present invention based on Internet of Things；
Fig. 4 is the communication sequence diagram of the low power dissipation electron label display device of the present invention based on Internet of Things；
Fig. 5 is the structural representation of gateway in the low power dissipation electron label display device of the present invention based on Internet of Things
Figure；
Fig. 6 is the workflow of electronic tag in the low power dissipation electron label display device of the present invention based on Internet of Things
Cheng Tu；
Fig. 7 is the viewing area of electronic tag in the low power dissipation electron label display device of the present invention based on Internet of Things
Piecemeal schematic diagram；
Fig. 8 and Fig. 9 is electronic tag in the low power dissipation electron label display device of the present invention based on Internet of Things
Actual example schematic diagram.
In figure：
1：Electronic tag
2nd, gateway
21：ZigBee communication modules 22：A/C Alternating Current Power Supplies module 23：PoE power supply modules
24：WiFi communication module 25：Memory 26：LED light
3：Control end interface
Specific embodiment
The preferred embodiment of the present invention is illustrated below in conjunction with attached drawing, it should be understood that preferred reality described herein
It applies example to be merely to illustrate and explain the present invention, be not intended to limit the present invention.
As depicted in figs. 1 and 2, the electronic tag display methods that low-power consumption of the present invention is shown with screen with partitioned, tool
Body includes the following steps：
S1：It is picture element matrix A by the entire screen cut and paste where electronic tag；
S2：Obtained respectively in the picture element matrix A two be located at different horizontal, ordinate anchor point B1 (X1, Y1) and
B2(X2,Y2)；Wherein X1 and X2 represents the abscissa of anchor point, and Y1 and Y2 represent the ordinate of anchor point；
S3：Obtain the display field A1 and A2 needed for subregion；
With B1 anchor points (X1, Y1) and B2 (X2, Y2) respectively as starting point and cut off, using | X1-X2 | as width
L, | Y1-Y2 | as the display field A1 of height H setting rectangles, remainder is another display field A2, i.e. A-A1.
S4：The information of multi-section display is encapsulated by API in the display field A1 and A2, is shown with realizing with screen with partitioned.
For above step, entire screen is simply divided into 2 display fields A1 and A2, in real process, usually
May need 3,4 it is even more, as shown in figs. 7 to 9, be desirable for 5 display fields.It therefore, can be more than
The principle of method sets multiple anchor points to complete, and principle is same as above, and details are not described herein.
In order to preferably apply to above method in practice, by being based on Internet of Things the method forms of the present invention
The low power dissipation electron label display device of net, as shown in figure 3, including electronic tag 1, gateway 2 and control end interface 3, Yong Hutong
3 management gateway 2 of control end interface and electronic tag 1 (networking/refreshing/logout) are crossed, and is updated interior on each electronic tag 1
Hold, as shown in Figure 4.Wherein, for the electronic tag 1 using Electronic Paper screen, it is a kind of ultra-thin, ultralight display to have
Screen, display content hardly power consumption, even if in the event of a power failure, when can also keep showing for a long time, and use
Very power saving, in real process, even if refreshing once daily, then a CR2032 button cell can be used 1 year, and low energy consumption, into
This is also low.
Wherein, the Numerous that the electronic tag 1 is set, a control end interface 3 can connect tens gateways 2,
Each gateway 2 can connect and control 200 electronic tags 1, therefore, the low power dissipation electron of the present invention based on Internet of Things
Label display device, can both meet the needs of smaller retail shop (such as convenience store) and meeting room, can also meet large-scale business surpass and
The commodity in warehouse or the mark of article.Since the application of electronic tag 1 is on a grand scale, the low-power consumption long-life is that important performance refers to
Mark.
As shown in figure 5, in order to further reduce power consumption of the display information during transmission and presentation, the electronic tag
1 is connected by ZigBee communication modules 21 with gateway 2.
Meanwhile for operation environment/scene of different scales, A/C Alternating Current Power Supplies pattern 22 that the gateway 2 uses and/
Or PoE powering modes 23, the control end interface 3 are connected by WiFi communication module 24 with gateway 2, i.e., gateway 2 devises double
Mould is powered and online combination, had not only supported PoE power supplies and Ethernet, but also compatible with alternating 220V power supplies and WiFi online, and had improved whole
Flexibility of a device during deployment, extends application space.
For example, surpassing or warehouse in large-scale business, itself just there is the interchanger of oneself, therefore also just there is ready-made PoE
Power supply and Ethernet, then gateway 2 be directly accessed utilization, not only save cost, also provide significantly utilization during
Compatibility.Meanwhile if in smaller retail shop or meeting room, itself is It is not necessary to be separately provided interchanger, but have 220V certainly
Alternating Current Power Supply surfs the Internet for WiFi, also becomes basically universal, even if not having, individually input setting is also extremely simple, and cost
It is relatively low.So, for gateway 2, electricity is directly connect using plug, WiFi access network can normal use, operate pole
Its is simple, convenient.
For commodity/experience under system/service on connecting line and line, the electronic tag 1 is provided with word-information display
Area and coding viewing area, as shown in figs. 7 to 9, wherein word-information display area is exactly to be directly used in display content, the coding
Viewing area includes bar code display and/or Quick Response Code is shown, user can be by mobile phone barcode scanning come store on connecting line, completion branch
It pays or the functions such as meeting signature.
Specifically, the Electronic Paper screen that Fig. 7-Fig. 9 is used for 2.9 cun, resolution ratio be 296 (width) x128 (height), each pixel
O'clock gray scale is represented by the data of byte (byte), so one complete label picture of transmission is 296x128/8=4736
A byte.Since the content update frequency of display is different, entire screen is divided into four pieces, Quick Response Code accounting screen it is wide 1/3, in addition three
Accounting screen it is wide 2/3, and divide trisection from top to bottom, show three kinds of different contents respectively.Data after split screen are according to screen
Pixel accounting on curtain, the data of Quick Response Code part only have 1.5KB, and in addition three respectively have 1.05KB.Compared to the entire screen of update
Picture for, it is necessary to transmission data considerably reduce.Such as：The update of different seat black or white boards for writing temporary accounts or records on only needs to transmit date and surname
Name, seat number and Quick Response Code of registering are without changing.
In addition, the low power dissipation electron label display device based on Internet of Things, is essentially all to be in use
In the state of static state display, in order to further save energy consumption, the control end interface 3 is exported control terminal by gateway 2 dynamic
State adjusts sleep interval time tranfer to electronic tag 1, to set the different sleep times of electronic tag 1, i.e., according to applied field
Scape comes balance system response speed and battery.
As shown in fig. 6, the electronic tag 1 dynamically adjust dormancy time be one can be with newer parameter, in communication protocols
It can adjust in view.It is triggered by gateway 2 according to default working hour and next period, to set the different sleep time of label, such as
8-20 points wake up once for every 10 minutes, and 21- 8 points of each hours of morning next day wake up once.After electronic tag 1 wakes up every time,
It can actively inquire whether gateway 2 has content update and parameter adjustment.Meanwhile gateway 2 can according to backstage set working hour and
The next period adjusts the sleep time of electronic tag 1.This parameter is that one of tag reactant speed and energy saving the two is put down
Weighing apparatus, even reacts faster, and sleep time is shorter, and energy consumption is higher, and battery life is shorter, and it is shorter to replace the battery interval time.Conversely,
It is then longer.And each application scenarios have different demands.So dynamic setting sleep time is conducive to make full use of application scenarios
External condition, extend battery life as far as possible.
Refer to for front and surpassing and the application of warehouse and meeting room and convenience store in large-scale business, for the former, gateway 2
PoE power supplies on network interface the characteristics of make use of interchanger multiplex roles, multiple 2 (10-20 of gateway can be met by an interchanger
It is a), cover the range for wireless communication of bigger.Each gateway 2 accesses 100-200 electronic tag, as business surpasses each on shelf
The corresponding species care label of each article in the corresponding price tag of commodity or warehouse shelf.
For the latter, the ac plug and WiFi module of gateway 2 make use of indoor socket and wireless WiFi access points, can be with
Multiple gateways (1-5) are connected by a WiFi access point, cover all seat black or white boards for writing temporary accounts or records on or Commercial goods labels in single room
(100-1000) is a.
However, which kind of application, background system only needs the agreement by the gateway 2 that we customize and control end interface 3,
The picture of display content, each electronic tag 1 is uploaded to by gateway 2.The agreement and interface API are supplied to product
Client, therefore be not limited in PC control, i.e., PC ends update label substance.System long-distance client end supporting passes through internet
The http protocol of upper standard using the mode of browser, is connected to gateway, realizes in the display on remotely modifying electronic tag
Appearance and sleep time.
In addition, for the ease of the storage of information, the gateway 2 be also associated with storing its 25.Meanwhile in order to meet night or
Use in the case of person's dim light, the gateway are additionally provided with LED light 26.
In order to further it is clearer understand apparatus above principle, with reference to the example of Fig. 8 and Fig. 9, wherein, in Fig. 8
Viewing area is encoded, that is, employs bar code, has also used Quick Response Code, for actually required.Meanwhile represent the product of Gree
Label is designating title, power, model and its price.In addition, for Fig. 9, the meeting personnel mark of meeting room is represented
Label, designate date, name, seat number and meeting signature Quick Response Code.
The electronic tag display methods and its display device other structures that low-power consumption of the present invention is shown with screen with partitioned
Referring to the prior art, details are not described herein.
The above described is only a preferred embodiment of the present invention, not make limitation in any form to the present invention, therefore
Every any modification that without departing from technical solution of the present invention content, technical spirit according to the invention makees above example,
Equivalent variations and modification, in the range of still falling within technical solution of the present invention.
Claims (10)
1. the electronic tag display methods that a kind of low-power consumption is shown with screen with partitioned, which is characterized in that include the following steps：
It is picture element matrix by the entire screen cut and paste where electronic tag；
It obtains two respectively in the picture element matrix and is located at different horizontal, the anchor points (X1, Y1) and (X2, Y2) of ordinate；Its
Middle X1 and X2 represents the abscissa of anchor point, and Y1 and Y2 represent the ordinate of anchor point；
Obtain the display field needed for subregion；
The information of multi-section display is encapsulated by API in the display field, is shown with realizing with screen with partitioned.
2. the electronic tag display methods that low-power consumption according to claim 1 is shown with screen with partitioned, it is characterised in that：
The step of display field needed for the acquisition subregion is：
With anchor point (X1, Y1) and (X2, Y2) respectively as starting point and cut off, using | X1-X2 | as width, | Y1-Y2 |
The display field of rectangle is set as height, remainder is another display field.
3. the electronic tag display methods that low-power consumption according to claim 1 or 2 is shown with screen with partitioned, it is characterised in that：
The number of the display field is determined by setting different anchor points.
4. the low power dissipation electron label based on Internet of Things that a kind of method using described in claim 1 or 2 or 3 is formed shows dress
It puts, it is characterised in that：
Several electronic tags, for showing information, the electronic tag is Electronic Paper screen；
End interface is controlled, is communicated to connect by gateway and all electronic tags, for the display information for exporting control terminal
It is transmitted to the electronic tag and carries out multi-section display.
5. the low power dissipation electron label display device according to claim 4 based on Internet of Things, it is characterised in that：
The electronic tag is connected by ZigBee communication modules with gateway.
6. the low power dissipation electron label display device according to claim 4 based on Internet of Things, it is characterised in that：
The gateway uses A/C Alternating Current Power Supplies pattern and/or PoE patterns.
7. the low power dissipation electron label display device according to claim 4 based on Internet of Things, it is characterised in that：
The electronic tag is provided with word-information display area and coding viewing area.
8. the low power dissipation electron label display device according to claim 7 based on Internet of Things, it is characterised in that：
The bar code viewing area includes bar code and Quick Response Code.
9. the low power dissipation electron label display device according to claim 5 based on Internet of Things, it is characterised in that：
The control end interface is connected by WiFi communication module with gateway.
10. the low power dissipation electron label display device according to claim 4 based on Internet of Things, it is characterised in that：
The control end interface by gateway by the dynamic regulation sleep interval time tranfer that control terminal exports to electronic tag, with
Set the different sleep times of electronic tag.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109088926A (en) * | 2018-08-02 | 2018-12-25 | 广州科政数码科技有限公司 | A kind of table board for conference means of communication and system |
| CN109472339A (en) * | 2018-11-23 | 2019-03-15 | 重庆京东方智慧电子***有限公司 | Electronic tag control method, electronic tag and readable storage medium storing program for executing |
| CN110536272A (en) * | 2019-08-30 | 2019-12-03 | 联想(北京)有限公司 | Information processing method, device and electronic equipment |
| CN112492674A (en) * | 2020-11-25 | 2021-03-12 | 努比亚技术有限公司 | Sleep cycle configuration method and device and computer readable storage medium |
| CN112559061A (en) * | 2020-12-14 | 2021-03-26 | 努比亚技术有限公司 | Electronic price tag management method, electronic terminal and computer readable storage medium |
| CN112866499A (en) * | 2020-12-31 | 2021-05-28 | 努比亚技术有限公司 | Electronic price tag differential mapping method, equipment and computer storage medium |
| CN113539191A (en) * | 2021-07-07 | 2021-10-22 | 江西兴泰科技有限公司 | Voltage driving waveform debugging method for reducing power consumption of electronic paper |
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