CN114047447A - Electric quantity prompting method, electronic label, system and storage medium - Google Patents
Electric quantity prompting method, electronic label, system and storage medium Download PDFInfo
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- CN114047447A CN114047447A CN202111324349.7A CN202111324349A CN114047447A CN 114047447 A CN114047447 A CN 114047447A CN 202111324349 A CN202111324349 A CN 202111324349A CN 114047447 A CN114047447 A CN 114047447A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/165—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on translational movement of particles in a fluid under the influence of an applied field
- G02F1/166—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on translational movement of particles in a fluid under the influence of an applied field characterised by the electro-optical or magneto-optical effect
- G02F1/167—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on translational movement of particles in a fluid under the influence of an applied field characterised by the electro-optical or magneto-optical effect by electrophoresis
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
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Abstract
The invention discloses a method for prompting electric quantity, an electronic label, a system and a storage medium, wherein the method comprises the following steps: detecting whether the residual capacity of the battery is smaller than a set threshold value; if the residual electric quantity is smaller than the set threshold, performing reverse color processing on a designated area in the first picture, superposing an electric quantity icon corresponding to the designated threshold to the designated area of the first picture after the reverse color processing, and acquiring a second picture with the electric quantity icon; and displaying the second picture.
Description
Technical Field
The present invention relates to the field of display, and in particular, to a method, an electronic label, a system, and a storage medium for prompting an electric quantity.
Background
In the display field, an electronic sign using Electrophoretic display (EPD) technology has lower power consumption, so that the electronic sign can have longer standby time when using a battery as a power source.
Although the electronic signage using the EPD technology has a longer standby time, the battery power of the electronic signage is lower and lower along with the increase of the usage time, and when the battery power is too low, the user is usually prompted to have the low power, to replace the battery, or to charge the battery in the electronic signage by controlling a Light Emitting Diode (LED) on the electronic signage to blink for a long time.
However, the electronic label flickers the LED for a long time, which consumes more power, and the flickering for a short time is not easily noticed by the user, so that the function of prompting the user that the power is low is lost.
In view of this, how to reduce the power consumption of the electronic signage for power indication is an urgent technical problem to be solved.
Disclosure of Invention
The invention provides a method, an electronic label, a system and a storage medium for prompting electric quantity, which are used for solving the technical problems in the prior art.
In a first aspect, to solve the above technical problem, an embodiment of the present invention provides a method for prompting an electric quantity, which is applied to an electronic label based on an electrophoresis technology, where the electronic label is powered by a battery, and the method includes:
detecting whether the residual capacity of the battery is smaller than a set threshold value;
if the residual electric quantity is smaller than the set threshold, performing reverse color processing on a designated area in the first picture, superposing an electric quantity icon corresponding to the designated threshold to the designated area of the first picture after the reverse color processing, and acquiring a second picture with the electric quantity icon;
and displaying the second picture.
In one possible embodiment, before performing the inverse color processing on the designated area in the first picture, the method further includes:
detecting whether an instruction for replacing a current picture currently being displayed is received;
if the instruction is received, taking a target picture corresponding to the instruction as the first picture;
and if the instruction is not received, taking the current picture as the first picture under the condition that the electric quantity flag bit is effective.
One possible implementation manner, under the condition that the power flag is valid, includes:
judging whether the electric quantity flag bit is invalid or not;
and if the electric quantity flag bit is invalid, setting the electric quantity flag bit to be valid.
One possible implementation manner, in which an electric quantity icon corresponding to the specified threshold is superimposed on a specified area of the first picture after the reverse color processing, to obtain a second picture with the electric quantity icon, includes:
judging whether the screen resolution of the electronic label is consistent with the original screen resolution corresponding to the electric quantity icon or not;
if the electric quantity icon is inconsistent with the screen resolution of the electronic label, adjusting the resolution of the electric quantity icon to be consistent with the screen resolution of the electronic label;
and superposing the electric quantity icon which is consistent with the screen resolution of the electronic label to the appointed area of the first picture after the reverse color processing to obtain the second picture with the electric quantity icon.
One possible embodiment, adjusting the resolution of the power icon to be consistent with the screen resolution of the electronic sign, includes:
calculating the multiple of the screen resolution of the electronic label and the original screen resolution;
and performing equal ratio processing on the electric quantity icon according to the multiple to obtain the electric quantity icon which is consistent with the screen resolution of the electronic label.
One possible implementation manner, after detecting whether the remaining capacity of the battery is smaller than a set threshold, further includes:
if the residual electric quantity is larger than or equal to the set threshold, detecting whether an instruction for replacing the current picture currently displayed is received;
and if the instruction is received, reading and displaying a target picture corresponding to the instruction under the condition that the electric quantity flag bit of the battery is invalid.
One possible implementation manner, reading and displaying a target picture corresponding to the instruction under the condition that the electric quantity flag bit of the battery is invalid, includes:
detecting whether the electric quantity flag bit is valid;
if the electric quantity identification bit is valid, setting the electric quantity flag as invalid, and reading and displaying the target picture;
and if the low-power identification bit is invalid, directly reading and displaying the target picture.
In a second aspect, an embodiment of the present invention further provides an electronic label, including:
at least one processor, and
a memory coupled to the at least one processor;
wherein the memory stores instructions executable by the at least one processor, and the at least one processor performs the method according to the first aspect by executing the instructions stored by the memory.
In a third aspect, an embodiment of the present invention further provides an electronic signage system, including:
a plurality of electronic signs as described in the second aspect;
a gateway device in communication with the electronic sign through a wireless network;
and the cloud server is communicated with the gateway equipment, issues information to the electronic label through the gateway equipment, and receives the information of the electronic label through the gateway equipment.
In a fourth aspect, an embodiment of the present invention further provides a readable storage medium, including:
a memory for storing a plurality of data to be transmitted,
the memory is for storing instructions that, when executed by the processor, cause an apparatus comprising the readable storage medium to perform the method as described in the first aspect above.
Drawings
Fig. 1 is a flowchart of an electric quantity prompting method according to an embodiment of the present invention;
fig. 2 is a schematic diagram illustrating an internal structure of an electronic label according to an embodiment of the present invention;
fig. 3 is a discharge curve diagram of a battery cell corresponding to a battery in an electronic label according to an embodiment of the present invention;
fig. 4 is a schematic view of a display screen of an electronic sign according to an embodiment of the present invention. (ii) a
Fig. 5 is a schematic diagram of generating a second picture with an electric quantity icon according to an embodiment of the present invention;
fig. 6 is a schematic diagram of another embodiment of generating a second picture with a power icon;
fig. 7 is a schematic structural diagram of an electronic signage system according to an embodiment of the present invention.
Detailed Description
Embodiments of the present invention provide a method, an electronic label, a system and a storage medium for prompting power consumption, so as to solve the above technical problems in the prior art.
In order to better understand the technical solutions of the present invention, the following detailed descriptions of the technical solutions of the present invention are provided with the accompanying drawings and the specific embodiments, and it should be understood that the specific features in the embodiments and the examples of the present invention are the detailed descriptions of the technical solutions of the present invention, and are not limitations of the technical solutions of the present invention, and the technical features in the embodiments and the examples of the present invention may be combined with each other without conflict.
Referring to fig. 1, an embodiment of the present invention provides a method for indicating power level, which is applied to an electrophoretic display (EPD) based electronic label, the electronic label being powered by a battery, and the method includes the following steps.
Step 101: detecting whether the residual electric quantity of the battery is smaller than a set threshold value;
step 102: if the residual electric quantity is smaller than the set threshold value, performing reverse color processing on the designated area in the first picture, superposing an electric quantity icon corresponding to the designated threshold value to the designated area of the first picture after the reverse color processing, and acquiring a second picture with the electric quantity icon;
step 103: and displaying the second picture.
The set threshold may be a low battery threshold of the battery, and the corresponding battery icon may be an icon representing that charging is required (e.g., a lightning icon); the predetermined threshold may be a specific threshold (e.g. 50%) of the battery, and the corresponding power icon may be a 50% icon.
The electronic signage may be EPD-based electronic signage, EPD-based electronic doorplates, EPD-based electronic nameplates, and the like.
Fig. 2 is a schematic view of an internal structure of an electronic label according to an embodiment of the present invention.
The electronic sign comprises a Micro Control Unit (MCU), a battery, a charging interface connected with a charging wire, a chip for charging management of the battery, a chip for converting a USB interface into a serial port (namely a chip for converting U into serial), a Flash memory (Flash) for storing a received picture, an EPD screen, an LED lamp, a switching key for switching a currently displayed current picture and the like. The chip of the U-to-serial is communicated with the MCU through a Universal Asynchronous Receiver/Transmitter (UART) in the MCU, and the MCU collects the voltage, discharge capacity, etc. of the battery through an Analog-to-Digital Converter (ADC).
Fig. 3 is a discharge curve diagram of a battery cell corresponding to a battery in an electronic label according to an embodiment of the present invention. In fig. 3, the voltage shown on the ordinate is 3.0 to 4.2(V), the discharge capacity shown on the abscissa is 0% to 100% (mAh), and from the discharge curve in fig. 3, the voltage of the battery decreases as the discharge capacity decreases, and the remaining capacity of the battery can be calculated by collecting the voltage and the discharge capacity of the battery.
For example, please refer to fig. 4, which is a schematic view of a display screen of an electronic sign according to an embodiment of the present invention.
The electronic label in fig. 4 is a guest pass, the electronic label shows that the user of the guest pass is "zhangsan" and the effective date is 11 months and 14 days, if the electronic label receives a new message to be received, a new message to be pushed appears in the column of the emergency message, and the electronic label prompts that the user wants to get close to the mobile phone to obtain more information, so that the user can get close to the electronic label by using the mobile phone with a Near Field Communication (NFC) function, and the electronic label receives the new message from the mobile phone through NFC Communication. Some operation icons such as a "urgent" icon for displaying urgent information, a home page icon for returning to a home page by double-clicking, a phone icon, etc. are further provided on the bottom of the electronic sign. Fig. 4 also shows the position of the designated area (indicated by dotted lines) in the picture displayed by the electronic sign, and when the electronic sign actually displays the picture, the designated area is not actually visible if the power icon is not required to be displayed.
When the electronic sign detects that the remaining power of the battery is less than a set threshold (e.g., 20%), performing reverse color processing on a designated area in the first picture, and superimposing the power icon on the designated area of the first picture after the reverse color processing to obtain a second picture with the power icon, and displaying the second picture on a screen of the electronic sign, as shown in fig. 5, where fig. 5 is a schematic diagram of generating the second picture with the power icon according to an embodiment of the present invention.
In the embodiment provided by the invention, the specified area in the first picture is subjected to the reverse color processing, and then the electric quantity icon is superposed to the specified area of the first picture after the reverse color processing to obtain the second picture with the electric quantity icon.
In a possible implementation manner, before performing the inverse color processing on the designated area in the first picture, the first picture needs to be obtained first, which may be specifically implemented by the following manners:
detecting whether an instruction for replacing a current picture currently being displayed is received; if the instruction is received, taking a target picture corresponding to the instruction as a first picture; and if the instruction is not received, taking the current picture as the first picture under the condition that the electric quantity flag bit is effective.
In the above embodiment, keeping the power flag bit active may be implemented by:
judging whether the electric quantity flag bit is invalid or not; and if the electric quantity flag bit is invalid, setting the electric quantity flag bit to be valid.
For example, assuming that a current picture currently displayed by the electronic signage is a picture shown in a screen of the electronic signage in fig. 4, after detecting that the remaining power of the battery is less than a set threshold (50%), it is further required to detect whether an instruction to replace the current picture currently being displayed is received, assuming that a user performs a switching operation on a button for switching the picture (or screen) on the electronic signage at this time, the electronic signage receives the instruction to replace the current picture currently being displayed, and acquires a target picture corresponding to the instruction (as shown in the target picture in fig. 6, fig. 6 is another schematic diagram for generating a second recent picture with a power icon provided by the embodiment of the present invention), where the target picture shows a conference, and includes 2 conference sessions, each of which is a date of 11.15 days and has a time of 9:00 to 11:00, and 14: 00-16:00, further taking the target picture as a first picture, performing reverse color processing on a designated area in the first picture, superposing the electric quantity icon to the designated area of the first picture after the reverse color processing, generating a second picture with the electric quantity icon in the picture 6, and displaying the second picture in the electronic label.
If the user does not execute the switching operation, the electronic sign does not receive an instruction for replacing the current picture currently displayed, and further can judge whether the electric quantity flag bit is valid, if the electric quantity flag bit is invalid, the electric quantity flag bit is set to be valid, so that the current picture can be used as the first picture under the condition that the electric quantity flag bit is valid, then, the specified area in the first picture is subjected to reverse color processing, the electric quantity icon is superposed into the specified area of the first picture subjected to the reverse color processing, and a second picture with the electric quantity icon as shown in fig. 5 is generated and displayed in the electronic sign.
In the embodiment provided by the invention, whether the current picture or the target picture is used by the first picture is determined by detecting whether the instruction of replacing the current picture which is currently displayed is received, and the latest pictures can be displayed together in time when the electric quantity is prompted, so that the efficiency of picture switching is improved while the electric quantity is prompted.
One possible implementation manner, in which an electric quantity icon corresponding to a specified threshold value is superimposed on a specified area of a first picture after reverse color processing, to obtain a second picture with the electric quantity icon, includes:
judging whether the screen resolution of the electronic label is consistent with the original screen resolution corresponding to the electric quantity icon; if the resolution of the electric quantity icon is not consistent with the screen resolution of the electronic label, adjusting the resolution of the electric quantity icon to be consistent with the screen resolution of the electronic label; and superposing the electric quantity icon which is consistent with the screen resolution of the electronic label to the appointed area of the first picture after the reverse color processing to obtain a second picture with the electric quantity icon.
For example, if the screen resolution of the electronic sign is 800 × 600 and the original screen resolution corresponding to the power icon is 400 × 300 (it indicates that the power icon is suitable for an electronic sign with a screen resolution of 400 × 300), it may be determined that the screen resolution of the electronic sign is not consistent with the original screen resolution corresponding to the power picture, and the resolution of the power icon may be adjusted to be consistent with the screen resolution of the electronic sign by performing interpolation on the binary file of the power icon, and the power icon consistent with the screen resolution of the electronic sign is superimposed on the specified area of the first picture after the reverse color processing, so as to obtain the second picture with the power icon.
If the screen resolution of the electronic label is 400 × 300 and the original screen resolution corresponding to the electric quantity icon is 800 × 600, it may be determined that the screen resolution of the electronic label is not consistent with the original screen resolution corresponding to the electric quantity picture, the resolution of the electric quantity icon may be adjusted to be consistent with the screen resolution of the electronic label by performing snapshot processing on the binary file of the electric quantity icon, and the electric quantity icon consistent with the screen resolution of the electronic label is superimposed on the specified area of the first picture after the reverse color processing, so as to obtain a second picture with the electric quantity icon.
In one possible embodiment, the adjusting of the resolution of the power icon to be consistent with the screen resolution of the electronic sign may be performed by:
calculating the multiple of the screen resolution of the electronic label and the original screen resolution; and performing equal ratio processing on the electric quantity icon according to the multiple to obtain the electric quantity icon consistent with the screen resolution of the electronic label.
For example, the screen resolution of the electronic sign is 800 × 600, the original screen resolution corresponding to the power icon is 400 × 300, the screen resolution of the electronic sign is calculated to be 800 × 600 and 4 times the original screen resolution 400 × 300, and the power icon having the resolution identical to the screen resolution of the electronic sign can be obtained by enlarging the resolution of the power icon by 4 times through the interpolation process.
For another example, the screen resolution of the electronic label is 400 × 300, the original screen resolution corresponding to the power icon is 800 × 600, the screen resolution of the electronic label is calculated to be 400 × 300 and the multiple of the original screen resolution of 800 × 600 is calculated to be 1/4, and the power icon is reduced by 4 times through the snapshot process, so that the power icon consistent with the screen resolution of the electronic label can be obtained.
In the embodiment provided by the invention, when the screen resolution of the electronic label is not consistent with the original screen resolution corresponding to the electric quantity icon, the second picture with the electric quantity icon is obtained by adjusting the resolution of the electric quantity icon to be consistent with the screen resolution of the electronic label and then superposing the adjusted resolution to the appointed area of the first picture after the reverse color processing, so that the adjusted electric quantity icon can adapt to the screen resolution of the electronic label, and a better display effect is obtained.
When the resolution of the electric quantity icon is adjusted to be consistent with the screen resolution of the electronic label, the multiple of the screen resolution of the electronic label and the original screen resolution is calculated; and according to the multiple, the electric quantity icon is subjected to equal ratio processing, so that the electric quantity icon consistent with the screen resolution of the electronic label can be quickly obtained.
One possible implementation manner, after detecting whether the remaining capacity of the battery is smaller than a set threshold, includes:
if the residual electric quantity is larger than or equal to a set threshold value, detecting whether an instruction for replacing the current picture currently displayed is received; and if the instruction is received, reading and displaying the target picture corresponding to the instruction under the condition that the electric quantity flag bit of the battery is invalid.
For example, if it is detected that the remaining power of the battery in the electronic sign is greater than or equal to the set threshold (20%), it indicates that the power of the battery is not required to be prompted, but it is further detected whether an instruction to replace the current picture currently being displayed is received, and if the instruction is not received, no operation is required to be performed; if the command is received, the operation of replacing the picture needs to be executed, specifically, the target picture corresponding to the command is read and displayed under the condition that the battery flag bit of the battery is invalid.
In a possible embodiment, under the condition that the electric quantity flag bit of the battery is invalid, the target picture corresponding to the instruction is read and displayed, which may be implemented in the following manner:
detecting whether the electric quantity flag bit is effective or not; if the electric quantity identification bit is valid, setting the electric quantity flag as invalid, and reading and displaying the target picture; and if the low-power identification bit is invalid, directly reading and displaying the target picture.
For example, after determining that the remaining power of the battery in the electronic sign is greater than or equal to the set threshold (20%), further detecting whether the power flag is valid (e.g., the flag is invalid by 0, and the flag is valid by 1), if so, setting the power flag to be invalid (i.e., setting the power flag to 0), then reading and displaying the target picture, and if so, directly reading and displaying the target picture.
In the embodiment provided by the invention, after the instruction of replacing the current picture which is currently displayed is determined to be received, the corresponding specified target picture is read and displayed under the condition that the electric quantity flag bit of the battery is invalid, so that the condition that the electric quantity flag bit is wrongly identified to cause mistaken prompting of the electric quantity can be prevented.
Based on the same inventive concept, an embodiment of the present invention provides an electronic signage, including: at least one processor, and
a memory coupled to the at least one processor;
the memory stores instructions executable by the at least one processor, and the at least one processor executes the instructions stored in the memory to perform the method for prompting the power consumption.
Based on the same inventive concept, an embodiment of the present invention provides an electronic signage system, please refer to fig. 7, including:
a plurality of the above-described electronic signs 701;
a gateway device 702, the gateway device 702 communicating with the electronic sign 701 through a wireless network;
the cloud server 703 is in communication with the gateway device 702, issues information to the electronic sign 701 through the gateway device 702, and receives information of the electronic sign 701 through the gateway device 702.
It should be noted that the division of the unit in the embodiment of the present application is schematic, and is only a logic function division, and there may be another division manner in actual implementation. In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented as a software functional unit and sold or used as a stand-alone product, may be stored in a processor readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, a network device, or the like) or a processor (processor) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
It should be noted that, the apparatus provided in the embodiment of the present invention can implement all the method steps implemented by the method embodiment and achieve the same technical effect, and detailed descriptions of the same parts and beneficial effects as the method embodiment in this embodiment are omitted here.
Based on the same inventive concept, an embodiment of the present invention further provides a readable storage medium, including:
a memory for storing a plurality of data to be transmitted,
the memory is configured to store instructions that, when executed by the processor, cause an apparatus comprising the readable storage medium to perform a method of power alerting as described above.
The readable storage medium may be any available medium or data storage device that can be accessed by a processor, including volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. By way of example and not limitation, nonvolatile Memory may include Read-Only Memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash Memory, Solid State Disk (SSD), magnetic Memory (e.g., floppy Disk, hard Disk, magnetic tape, Magneto-Optical Disk (MO), etc.), Optical Memory (e.g., CD, BD, DVD, HVD, etc.), and so forth. Volatile Memory can include Random Access Memory (RAM), which can act as external cache Memory. By way of example and not limitation, RAM is available in many forms, such as Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDR SDRAM), Enhanced SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM). The storage devices of the disclosed aspects are intended to comprise, without being limited to, these and other suitable types of memory.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or program product. Accordingly, embodiments of the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the invention may take the form of a computer program product embodied on one or more readable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer/processor-usable program code embodied therein.
Embodiments of the present invention are described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These program instructions may also be stored in a readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer/processor implemented process such that the instructions which execute on the computer/processor or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A method for prompting electric quantity is applied to an electronic label based on electrophoresis technology, the electronic label is powered by a battery, and the method is characterized by comprising the following steps:
detecting whether the residual capacity of the battery is smaller than a set threshold value;
if the residual electric quantity is smaller than the set threshold, performing reverse color processing on a designated area in the first picture, superposing an electric quantity icon corresponding to the designated threshold to the designated area of the first picture after the reverse color processing, and acquiring a second picture with the electric quantity icon;
and displaying the second picture.
2. The method of claim 1, wherein prior to performing the inverse color processing on the designated area in the first picture, further comprising:
detecting whether an instruction for replacing a current picture currently being displayed is received;
if the instruction is received, taking a target picture corresponding to the instruction as the first picture;
and if the instruction is not received, taking the current picture as the first picture under the condition that the electric quantity flag bit is effective.
3. The method of claim 2, wherein the condition that the power flag is valid comprises:
judging whether the electric quantity flag bit is invalid or not;
and if the electric quantity flag bit is invalid, setting the electric quantity flag bit to be valid.
4. The method according to any one of claims 1 to 3, wherein superimposing the power icon corresponding to the specified threshold value into the specified area of the first picture after the reverse color processing, and obtaining the second picture with the power icon comprises:
judging whether the screen resolution of the electronic label is consistent with the original screen resolution corresponding to the electric quantity icon or not;
if the electric quantity icon is inconsistent with the screen resolution of the electronic label, adjusting the resolution of the electric quantity icon to be consistent with the screen resolution of the electronic label;
and superposing the electric quantity icon which is consistent with the screen resolution of the electronic label to the appointed area of the first picture after the reverse color processing to obtain the second picture with the electric quantity icon.
5. The method of claim 4, wherein adjusting the resolution of the charge level icon to be consistent with a screen resolution of the electronic sign comprises:
calculating the multiple of the screen resolution of the electronic label and the original screen resolution;
and performing equal ratio processing on the electric quantity icon according to the multiple to obtain the electric quantity icon which is consistent with the screen resolution of the electronic label.
6. The method of claim 1, wherein after detecting whether the remaining capacity of the battery is less than a set threshold, further comprising:
if the residual electric quantity is larger than or equal to the set threshold, detecting whether an instruction for replacing the current picture currently displayed is received;
and if the instruction is received, reading and displaying a target picture corresponding to the instruction under the condition that the electric quantity flag bit of the battery is invalid.
7. The method of claim 6, wherein reading and displaying the target picture corresponding to the instruction under the condition that the battery flag is invalid comprises:
detecting whether the electric quantity flag bit is valid;
if the electric quantity identification bit is valid, setting the electric quantity flag as invalid, and reading and displaying the target picture;
and if the low-power identification bit is invalid, directly reading and displaying the target picture.
8. An electronic sign, comprising:
at least one processor, and
a memory coupled to the at least one processor;
wherein the memory stores instructions executable by the at least one processor, the at least one processor performing the method of any one of claims 1-7 by executing the instructions stored by the memory.
9. An electronic signage system, comprising:
a plurality of electronic signs according to claim 8;
a gateway device in communication with the electronic sign through a wireless network;
and the cloud server is communicated with the gateway equipment, issues information to the electronic label through the gateway equipment, and receives the information of the electronic label through the gateway equipment.
10. A readable storage medium, comprising a memory,
the memory is for storing instructions that, when executed by the processor, cause an apparatus comprising the readable storage medium to perform the method of any of claims 1-7.
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